./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V --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 d0e47ba9123028218b420ce8d5a00a95c55595f981ba1193a1a3a9086d3ecf65 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:25:09,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:25:09,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:25:09,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:25:09,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:25:09,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:25:09,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:25:09,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:25:09,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:25:09,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:25:09,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:25:09,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:25:09,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:25:09,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:25:09,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:25:09,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:25:09,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:25:09,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:25:09,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:25:09,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:25:09,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:25:09,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:25:09,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:25:09,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:25:09,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:25:09,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:25:09,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:25:09,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:25:09,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:25:09,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:25:09,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:25:09,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:25:09,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:25:09,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:25:09,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:25:09,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:25:09,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:25:09,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:25:09,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:25:09,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:25:09,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:25:09,095 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:25:09,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:25:09,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:25:09,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:25:09,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:25:09,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:25:09,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:25:09,123 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:25:09,123 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:25:09,124 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:25:09,124 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:25:09,124 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:25:09,124 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:25:09,125 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:25:09,125 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:25:09,125 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:25:09,125 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:25:09,126 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:25:09,126 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:25:09,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:25:09,127 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:25:09,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:25:09,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:25:09,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:25:09,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:25:09,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:25:09,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:25:09,129 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:25:09,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:25:09,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:25:09,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:25:09,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:25:09,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:25:09,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:25:09,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:25:09,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:25:09,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:25:09,131 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:25:09,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:25:09,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:25:09,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:25:09,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:25:09,132 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_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0e47ba9123028218b420ce8d5a00a95c55595f981ba1193a1a3a9086d3ecf65 [2021-11-23 02:25:09,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:25:09,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:25:09,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:25:09,379 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:25:09,380 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:25:09,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-23 02:25:09,437 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/data/554d7e656/a6574b31ec0e41eeb3a390496316ad63/FLAG4677271aa [2021-11-23 02:25:10,230 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:25:10,231 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-23 02:25:10,283 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/data/554d7e656/a6574b31ec0e41eeb3a390496316ad63/FLAG4677271aa [2021-11-23 02:25:10,745 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/data/554d7e656/a6574b31ec0e41eeb3a390496316ad63 [2021-11-23 02:25:10,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:25:10,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:25:10,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:10,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:25:10,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:25:10,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:10" (1/1) ... [2021-11-23 02:25:10,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76af71f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:10, skipping insertion in model container [2021-11-23 02:25:10,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:10" (1/1) ... [2021-11-23 02:25:10,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:25:11,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:25:11,746 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32607,32620] [2021-11-23 02:25:11,780 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[39665,39678] [2021-11-23 02:25:11,917 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[66766,66779] [2021-11-23 02:25:11,946 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[75829,75842] [2021-11-23 02:25:11,967 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[82520,82533] [2021-11-23 02:25:12,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[94424,94437] [2021-11-23 02:25:12,035 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[103377,103390] [2021-11-23 02:25:12,059 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[111402,111415] [2021-11-23 02:25:12,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[149914,149927] [2021-11-23 02:25:12,183 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[153444,153457] [2021-11-23 02:25:12,206 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[162451,162464] [2021-11-23 02:25:12,225 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[169104,169117] [2021-11-23 02:25:12,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[194798,194811] [2021-11-23 02:25:12,399 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[226694,226707] [2021-11-23 02:25:12,501 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[256902,256915] [2021-11-23 02:25:12,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[287214,287227] [2021-11-23 02:25:12,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[320546,320559] [2021-11-23 02:25:12,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:12,969 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:25:13,097 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32607,32620] [2021-11-23 02:25:13,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[39665,39678] [2021-11-23 02:25:13,172 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[66766,66779] [2021-11-23 02:25:13,230 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[75829,75842] [2021-11-23 02:25:13,246 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[82520,82533] [2021-11-23 02:25:13,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[94424,94437] [2021-11-23 02:25:13,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[103377,103390] [2021-11-23 02:25:13,312 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[111402,111415] [2021-11-23 02:25:13,390 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[149914,149927] [2021-11-23 02:25:13,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[153444,153457] [2021-11-23 02:25:13,418 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[162451,162464] [2021-11-23 02:25:13,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[169104,169117] [2021-11-23 02:25:13,484 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[194798,194811] [2021-11-23 02:25:13,553 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[226694,226707] [2021-11-23 02:25:13,614 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[256902,256915] [2021-11-23 02:25:13,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[287214,287227] [2021-11-23 02:25:13,740 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[320546,320559] [2021-11-23 02:25:13,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:14,022 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:25:14,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:14 WrapperNode [2021-11-23 02:25:14,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:14,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:14,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:25:14,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:25:14,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:14" (1/1) ... [2021-11-23 02:25:14,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:14" (1/1) ... [2021-11-23 02:25:14,440 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17990 [2021-11-23 02:25:14,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:14,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:25:14,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:25:14,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:25:14,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:14" (1/1) ... [2021-11-23 02:25:14,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:14" (1/1) ... [2021-11-23 02:25:14,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:14" (1/1) ... [2021-11-23 02:25:14,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:14" (1/1) ... [2021-11-23 02:25:14,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:14" (1/1) ... [2021-11-23 02:25:14,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:14" (1/1) ... [2021-11-23 02:25:14,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:14" (1/1) ... [2021-11-23 02:25:14,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:25:14,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:25:14,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:25:14,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:25:14,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:14" (1/1) ... [2021-11-23 02:25:14,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:25:14,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:14,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:25:14,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb47125a-2850-47c8-b43b-ab3c61a8c296/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:25:14,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:25:14,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:25:14,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:25:14,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:25:15,523 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:25:15,525 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:25:22,448 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:25:24,051 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:25:24,051 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:25:24,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:24 BoogieIcfgContainer [2021-11-23 02:25:24,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:25:24,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:25:24,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:25:24,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:25:24,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:25:10" (1/3) ... [2021-11-23 02:25:24,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156fbba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:24, skipping insertion in model container [2021-11-23 02:25:24,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:14" (2/3) ... [2021-11-23 02:25:24,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156fbba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:24, skipping insertion in model container [2021-11-23 02:25:24,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:24" (3/3) ... [2021-11-23 02:25:24,068 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-23 02:25:24,073 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:25:24,073 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-23 02:25:24,135 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:25:24,142 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 [2021-11-23 02:25:24,142 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-23 02:25:24,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 3597 states, 3579 states have (on average 1.7812238055322716) internal successors, (6375), 3596 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 02:25:24,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:24,254 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] [2021-11-23 02:25:24,255 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)] === [2021-11-23 02:25:24,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:24,260 INFO L85 PathProgramCache]: Analyzing trace with hash -354004625, now seen corresponding path program 1 times [2021-11-23 02:25:24,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:24,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661567104] [2021-11-23 02:25:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:24,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:24,835 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:24,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661567104] [2021-11-23 02:25:24,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661567104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:24,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:24,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:25:24,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334195494] [2021-11-23 02:25:24,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:24,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:25:24,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:24,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:25:24,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:25:24,882 INFO L87 Difference]: Start difference. First operand has 3597 states, 3579 states have (on average 1.7812238055322716) internal successors, (6375), 3596 states have internal predecessors, (6375), 0 states have call successors, (0), 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 12.8) 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) [2021-11-23 02:25:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:29,040 INFO L93 Difference]: Finished difference Result 6700 states and 11630 transitions. [2021-11-23 02:25:29,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:25:29,042 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 [2021-11-23 02:25:29,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:29,087 INFO L225 Difference]: With dead ends: 6700 [2021-11-23 02:25:29,088 INFO L226 Difference]: Without dead ends: 4281 [2021-11-23 02:25:29,100 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 [2021-11-23 02:25:29,105 INFO L933 BasicCegarLoop]: 2836 mSDtfsCounter, 19386 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 3369 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19386 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 3556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 3369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:29,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19386 Valid, 4037 Invalid, 3556 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [187 Valid, 3369 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-23 02:25:29,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2021-11-23 02:25:29,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 4256. [2021-11-23 02:25:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4239 states have (on average 1.2774239207360227) internal successors, (5415), 4255 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:29,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 5415 transitions. [2021-11-23 02:25:29,387 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 5415 transitions. Word has length 64 [2021-11-23 02:25:29,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:29,388 INFO L470 AbstractCegarLoop]: Abstraction has 4256 states and 5415 transitions. [2021-11-23 02:25:29,389 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) [2021-11-23 02:25:29,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 5415 transitions. [2021-11-23 02:25:29,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 02:25:29,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:29,402 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] [2021-11-23 02:25:29,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:25:29,403 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:25:29,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:29,406 INFO L85 PathProgramCache]: Analyzing trace with hash 838909937, now seen corresponding path program 1 times [2021-11-23 02:25:29,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:29,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659743831] [2021-11-23 02:25:29,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:29,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:29,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:29,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659743831] [2021-11-23 02:25:29,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659743831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:29,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:29,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:25:29,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265049947] [2021-11-23 02:25:29,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:29,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:25:29,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:29,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:25:29,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:25:29,576 INFO L87 Difference]: Start difference. First operand 4256 states and 5415 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) [2021-11-23 02:25:32,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:32,207 INFO L93 Difference]: Finished difference Result 7911 states and 10039 transitions. [2021-11-23 02:25:32,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:25:32,208 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 [2021-11-23 02:25:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:32,239 INFO L225 Difference]: With dead ends: 7911 [2021-11-23 02:25:32,239 INFO L226 Difference]: Without dead ends: 5293 [2021-11-23 02:25:32,243 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 [2021-11-23 02:25:32,244 INFO L933 BasicCegarLoop]: 1716 mSDtfsCounter, 12226 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12226 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:32,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12226 Valid, 2270 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 02:25:32,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5293 states. [2021-11-23 02:25:32,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5293 to 5263. [2021-11-23 02:25:32,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5246 states have (on average 1.2748760960731986) internal successors, (6688), 5262 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 6688 transitions. [2021-11-23 02:25:32,464 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 6688 transitions. Word has length 65 [2021-11-23 02:25:32,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:32,465 INFO L470 AbstractCegarLoop]: Abstraction has 5263 states and 6688 transitions. [2021-11-23 02:25:32,465 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) [2021-11-23 02:25:32,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 6688 transitions. [2021-11-23 02:25:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 02:25:32,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:32,475 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] [2021-11-23 02:25:32,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:25:32,476 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:25:32,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:32,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1512929807, now seen corresponding path program 1 times [2021-11-23 02:25:32,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:32,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161356857] [2021-11-23 02:25:32,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:32,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:32,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:32,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:32,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161356857] [2021-11-23 02:25:32,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161356857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:32,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:32,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:25:32,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221852592] [2021-11-23 02:25:32,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:32,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:25:32,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:32,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:25:32,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:25:32,637 INFO L87 Difference]: Start difference. First operand 5263 states and 6688 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) [2021-11-23 02:25:34,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:34,856 INFO L93 Difference]: Finished difference Result 10428 states and 13211 transitions. [2021-11-23 02:25:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:25:34,856 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 [2021-11-23 02:25:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:34,961 INFO L225 Difference]: With dead ends: 10428 [2021-11-23 02:25:34,961 INFO L226 Difference]: Without dead ends: 6500 [2021-11-23 02:25:34,967 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 [2021-11-23 02:25:34,968 INFO L933 BasicCegarLoop]: 1459 mSDtfsCounter, 10467 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10467 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:34,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10467 Valid, 2002 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 02:25:34,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6500 states. [2021-11-23 02:25:35,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6500 to 6480. [2021-11-23 02:25:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6480 states, 6463 states have (on average 1.2696889989169116) internal successors, (8206), 6479 states have internal predecessors, (8206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:35,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6480 states to 6480 states and 8206 transitions. [2021-11-23 02:25:35,272 INFO L78 Accepts]: Start accepts. Automaton has 6480 states and 8206 transitions. Word has length 65 [2021-11-23 02:25:35,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:35,274 INFO L470 AbstractCegarLoop]: Abstraction has 6480 states and 8206 transitions. [2021-11-23 02:25:35,274 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) [2021-11-23 02:25:35,274 INFO L276 IsEmpty]: Start isEmpty. Operand 6480 states and 8206 transitions. [2021-11-23 02:25:35,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 02:25:35,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:35,285 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] [2021-11-23 02:25:35,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:25:35,286 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)] === [2021-11-23 02:25:35,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1700677701, now seen corresponding path program 1 times [2021-11-23 02:25:35,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:35,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051896888] [2021-11-23 02:25:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:35,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:35,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:35,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051896888] [2021-11-23 02:25:35,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051896888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:35,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:35,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:25:35,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584069615] [2021-11-23 02:25:35,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:35,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:25:35,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:35,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:25:35,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:25:35,461 INFO L87 Difference]: Start difference. First operand 6480 states and 8206 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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) [2021-11-23 02:25:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:37,194 INFO L93 Difference]: Finished difference Result 12408 states and 15766 transitions. [2021-11-23 02:25:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:25:37,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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 [2021-11-23 02:25:37,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:37,226 INFO L225 Difference]: With dead ends: 12408 [2021-11-23 02:25:37,226 INFO L226 Difference]: Without dead ends: 8268 [2021-11-23 02:25:37,234 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 [2021-11-23 02:25:37,235 INFO L933 BasicCegarLoop]: 1286 mSDtfsCounter, 8683 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8683 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:37,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8683 Valid, 1726 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 02:25:37,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2021-11-23 02:25:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 8228. [2021-11-23 02:25:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8228 states, 8211 states have (on average 1.2740226525392766) internal successors, (10461), 8227 states have internal predecessors, (10461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8228 states to 8228 states and 10461 transitions. [2021-11-23 02:25:37,730 INFO L78 Accepts]: Start accepts. Automaton has 8228 states and 10461 transitions. Word has length 66 [2021-11-23 02:25:37,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:37,730 INFO L470 AbstractCegarLoop]: Abstraction has 8228 states and 10461 transitions. [2021-11-23 02:25:37,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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) [2021-11-23 02:25:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 8228 states and 10461 transitions. [2021-11-23 02:25:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 02:25:37,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:37,740 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] [2021-11-23 02:25:37,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:25:37,740 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:25:37,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:37,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1596749287, now seen corresponding path program 1 times [2021-11-23 02:25:37,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:37,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680415490] [2021-11-23 02:25:37,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:37,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:37,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:37,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680415490] [2021-11-23 02:25:37,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680415490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:37,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:37,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:25:37,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593003075] [2021-11-23 02:25:37,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:37,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:25:37,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:37,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:25:37,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:25:37,926 INFO L87 Difference]: Start difference. First operand 8228 states and 10461 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) [2021-11-23 02:25:41,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:41,280 INFO L93 Difference]: Finished difference Result 12211 states and 15834 transitions. [2021-11-23 02:25:41,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:25:41,280 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 [2021-11-23 02:25:41,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:41,333 INFO L225 Difference]: With dead ends: 12211 [2021-11-23 02:25:41,333 INFO L226 Difference]: Without dead ends: 11085 [2021-11-23 02:25:41,340 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 [2021-11-23 02:25:41,342 INFO L933 BasicCegarLoop]: 1326 mSDtfsCounter, 9217 mSDsluCounter, 3094 mSDsCounter, 0 mSdLazyCounter, 4150 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9217 SdHoareTripleChecker+Valid, 4420 SdHoareTripleChecker+Invalid, 4248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 4150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:41,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9217 Valid, 4420 Invalid, 4248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 4150 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-23 02:25:41,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11085 states. [2021-11-23 02:25:41,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11085 to 8084. [2021-11-23 02:25:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8084 states, 8067 states have (on average 1.2738316598487667) internal successors, (10276), 8083 states have internal predecessors, (10276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8084 states to 8084 states and 10276 transitions. [2021-11-23 02:25:41,854 INFO L78 Accepts]: Start accepts. Automaton has 8084 states and 10276 transitions. Word has length 67 [2021-11-23 02:25:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:41,855 INFO L470 AbstractCegarLoop]: Abstraction has 8084 states and 10276 transitions. [2021-11-23 02:25:41,855 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) [2021-11-23 02:25:41,855 INFO L276 IsEmpty]: Start isEmpty. Operand 8084 states and 10276 transitions. [2021-11-23 02:25:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 02:25:41,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:41,864 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] [2021-11-23 02:25:41,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:25:41,864 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:25:41,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:41,865 INFO L85 PathProgramCache]: Analyzing trace with hash -738498771, now seen corresponding path program 1 times [2021-11-23 02:25:41,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:41,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751911442] [2021-11-23 02:25:41,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:41,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:42,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:42,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751911442] [2021-11-23 02:25:42,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751911442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:42,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:42,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:25:42,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174196926] [2021-11-23 02:25:42,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:42,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:25:42,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:42,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:25:42,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:25:42,019 INFO L87 Difference]: Start difference. First operand 8084 states and 10276 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) [2021-11-23 02:25:46,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:46,076 INFO L93 Difference]: Finished difference Result 14777 states and 19115 transitions. [2021-11-23 02:25:46,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:25:46,077 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 [2021-11-23 02:25:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:46,107 INFO L225 Difference]: With dead ends: 14777 [2021-11-23 02:25:46,107 INFO L226 Difference]: Without dead ends: 13761 [2021-11-23 02:25:46,111 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 [2021-11-23 02:25:46,113 INFO L933 BasicCegarLoop]: 1538 mSDtfsCounter, 7351 mSDsluCounter, 4638 mSDsCounter, 0 mSdLazyCounter, 6276 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7351 SdHoareTripleChecker+Valid, 6176 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 6276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:46,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7351 Valid, 6176 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 6276 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-23 02:25:46,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13761 states. [2021-11-23 02:25:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13761 to 8034. [2021-11-23 02:25:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8034 states, 8017 states have (on average 1.273668454534115) internal successors, (10211), 8033 states have internal predecessors, (10211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8034 states to 8034 states and 10211 transitions. [2021-11-23 02:25:46,595 INFO L78 Accepts]: Start accepts. Automaton has 8034 states and 10211 transitions. Word has length 67 [2021-11-23 02:25:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:46,596 INFO L470 AbstractCegarLoop]: Abstraction has 8034 states and 10211 transitions. [2021-11-23 02:25:46,596 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) [2021-11-23 02:25:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand 8034 states and 10211 transitions. [2021-11-23 02:25:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:25:46,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:46,605 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] [2021-11-23 02:25:46,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:25:46,605 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:25:46,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:46,606 INFO L85 PathProgramCache]: Analyzing trace with hash 757912053, now seen corresponding path program 1 times [2021-11-23 02:25:46,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:46,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079023518] [2021-11-23 02:25:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:46,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:47,001 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:47,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079023518] [2021-11-23 02:25:47,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079023518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:47,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:47,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 02:25:47,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417177769] [2021-11-23 02:25:47,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:47,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:25:47,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:47,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:25:47,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:25:47,004 INFO L87 Difference]: Start difference. First operand 8034 states and 10211 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 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) [2021-11-23 02:25:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:49,884 INFO L93 Difference]: Finished difference Result 12701 states and 16622 transitions. [2021-11-23 02:25:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:25:49,885 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 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 [2021-11-23 02:25:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:49,911 INFO L225 Difference]: With dead ends: 12701 [2021-11-23 02:25:49,912 INFO L226 Difference]: Without dead ends: 12697 [2021-11-23 02:25:49,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-11-23 02:25:49,917 INFO L933 BasicCegarLoop]: 2511 mSDtfsCounter, 11680 mSDsluCounter, 12127 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11680 SdHoareTripleChecker+Valid, 14468 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:49,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11680 Valid, 14468 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 02:25:49,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12697 states. [2021-11-23 02:25:50,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12697 to 8030. [2021-11-23 02:25:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8030 states, 8014 states have (on average 1.2736461192912403) internal successors, (10207), 8029 states have internal predecessors, (10207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:50,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8030 states to 8030 states and 10207 transitions. [2021-11-23 02:25:50,649 INFO L78 Accepts]: Start accepts. Automaton has 8030 states and 10207 transitions. Word has length 68 [2021-11-23 02:25:50,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:50,650 INFO L470 AbstractCegarLoop]: Abstraction has 8030 states and 10207 transitions. [2021-11-23 02:25:50,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 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) [2021-11-23 02:25:50,650 INFO L276 IsEmpty]: Start isEmpty. Operand 8030 states and 10207 transitions. [2021-11-23 02:25:50,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:25:50,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:50,661 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] [2021-11-23 02:25:50,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:25:50,661 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)] === [2021-11-23 02:25:50,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:50,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1434028365, now seen corresponding path program 1 times [2021-11-23 02:25:50,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:50,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235978794] [2021-11-23 02:25:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:50,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:50,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:50,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235978794] [2021-11-23 02:25:50,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235978794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:50,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:50,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:25:50,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124535650] [2021-11-23 02:25:50,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:50,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:25:50,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:50,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:25:50,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:25:50,833 INFO L87 Difference]: Start difference. First operand 8030 states and 10207 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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) [2021-11-23 02:25:53,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:53,938 INFO L93 Difference]: Finished difference Result 9371 states and 11915 transitions. [2021-11-23 02:25:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:25:53,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 [2021-11-23 02:25:53,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:53,957 INFO L225 Difference]: With dead ends: 9371 [2021-11-23 02:25:53,957 INFO L226 Difference]: Without dead ends: 9365 [2021-11-23 02:25:53,961 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 [2021-11-23 02:25:53,962 INFO L933 BasicCegarLoop]: 1303 mSDtfsCounter, 7469 mSDsluCounter, 4106 mSDsCounter, 0 mSdLazyCounter, 4902 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7469 SdHoareTripleChecker+Valid, 5409 SdHoareTripleChecker+Invalid, 5048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 4902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:53,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7469 Valid, 5409 Invalid, 5048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 4902 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 02:25:53,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9365 states. [2021-11-23 02:25:54,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9365 to 8030. [2021-11-23 02:25:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8030 states, 8014 states have (on average 1.2735213376590966) internal successors, (10206), 8029 states have internal predecessors, (10206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:54,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8030 states to 8030 states and 10206 transitions. [2021-11-23 02:25:54,663 INFO L78 Accepts]: Start accepts. Automaton has 8030 states and 10206 transitions. Word has length 68 [2021-11-23 02:25:54,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:54,663 INFO L470 AbstractCegarLoop]: Abstraction has 8030 states and 10206 transitions. [2021-11-23 02:25:54,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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) [2021-11-23 02:25:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 8030 states and 10206 transitions. [2021-11-23 02:25:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:25:54,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:54,672 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] [2021-11-23 02:25:54,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:25:54,672 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:25:54,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:54,673 INFO L85 PathProgramCache]: Analyzing trace with hash -896669404, now seen corresponding path program 1 times [2021-11-23 02:25:54,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:54,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022075416] [2021-11-23 02:25:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:54,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:54,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:54,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022075416] [2021-11-23 02:25:54,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022075416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:54,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:54,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:25:54,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094675770] [2021-11-23 02:25:54,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:54,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:25:54,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:54,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:25:54,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:25:54,822 INFO L87 Difference]: Start difference. First operand 8030 states and 10206 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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) [2021-11-23 02:25:57,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:57,948 INFO L93 Difference]: Finished difference Result 10089 states and 12777 transitions. [2021-11-23 02:25:57,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:25:57,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 [2021-11-23 02:25:57,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:57,961 INFO L225 Difference]: With dead ends: 10089 [2021-11-23 02:25:57,961 INFO L226 Difference]: Without dead ends: 10080 [2021-11-23 02:25:57,963 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 [2021-11-23 02:25:57,964 INFO L933 BasicCegarLoop]: 1263 mSDtfsCounter, 5998 mSDsluCounter, 4043 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5998 SdHoareTripleChecker+Valid, 5306 SdHoareTripleChecker+Invalid, 5313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:57,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5998 Valid, 5306 Invalid, 5313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 02:25:57,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10080 states. [2021-11-23 02:25:58,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10080 to 8030. [2021-11-23 02:25:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8030 states, 8014 states have (on average 1.273396556026953) internal successors, (10205), 8029 states have internal predecessors, (10205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:25:58,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8030 states to 8030 states and 10205 transitions. [2021-11-23 02:25:58,519 INFO L78 Accepts]: Start accepts. Automaton has 8030 states and 10205 transitions. Word has length 68 [2021-11-23 02:25:58,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:58,519 INFO L470 AbstractCegarLoop]: Abstraction has 8030 states and 10205 transitions. [2021-11-23 02:25:58,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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) [2021-11-23 02:25:58,520 INFO L276 IsEmpty]: Start isEmpty. Operand 8030 states and 10205 transitions. [2021-11-23 02:25:58,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:25:58,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:58,528 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] [2021-11-23 02:25:58,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:25:58,529 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:25:58,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:58,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1848914971, now seen corresponding path program 1 times [2021-11-23 02:25:58,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:25:58,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700464972] [2021-11-23 02:25:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:58,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:25:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:25:58,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:25:58,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700464972] [2021-11-23 02:25:58,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700464972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:25:58,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:25:58,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 02:25:58,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044333715] [2021-11-23 02:25:58,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:58,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 02:25:58,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:25:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 02:25:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:25:58,846 INFO L87 Difference]: Start difference. First operand 8030 states and 10205 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 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) [2021-11-23 02:26:01,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:01,847 INFO L93 Difference]: Finished difference Result 12692 states and 16609 transitions. [2021-11-23 02:26:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:26:01,858 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 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 [2021-11-23 02:26:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:01,872 INFO L225 Difference]: With dead ends: 12692 [2021-11-23 02:26:01,872 INFO L226 Difference]: Without dead ends: 12688 [2021-11-23 02:26:01,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2021-11-23 02:26:01,876 INFO L933 BasicCegarLoop]: 2504 mSDtfsCounter, 11625 mSDsluCounter, 9969 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11625 SdHoareTripleChecker+Valid, 12328 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:01,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11625 Valid, 12328 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 02:26:01,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12688 states. [2021-11-23 02:26:02,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12688 to 8026. [2021-11-23 02:26:02,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8026 states, 8011 states have (on average 1.273374110597928) internal successors, (10201), 8025 states have internal predecessors, (10201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:02,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8026 states to 8026 states and 10201 transitions. [2021-11-23 02:26:02,558 INFO L78 Accepts]: Start accepts. Automaton has 8026 states and 10201 transitions. Word has length 68 [2021-11-23 02:26:02,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:02,559 INFO L470 AbstractCegarLoop]: Abstraction has 8026 states and 10201 transitions. [2021-11-23 02:26:02,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 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) [2021-11-23 02:26:02,559 INFO L276 IsEmpty]: Start isEmpty. Operand 8026 states and 10201 transitions. [2021-11-23 02:26:02,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 02:26:02,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:02,568 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] [2021-11-23 02:26:02,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:26:02,568 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:26:02,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash 267145537, now seen corresponding path program 1 times [2021-11-23 02:26:02,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:02,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030305679] [2021-11-23 02:26:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:02,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:02,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:02,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030305679] [2021-11-23 02:26:02,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030305679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:02,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:02,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 02:26:02,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406684400] [2021-11-23 02:26:02,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:02,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:26:02,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:02,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:26:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:26:02,937 INFO L87 Difference]: Start difference. First operand 8026 states and 10201 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 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) [2021-11-23 02:26:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:06,434 INFO L93 Difference]: Finished difference Result 13345 states and 17429 transitions. [2021-11-23 02:26:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:26:06,434 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 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 [2021-11-23 02:26:06,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:06,446 INFO L225 Difference]: With dead ends: 13345 [2021-11-23 02:26:06,447 INFO L226 Difference]: Without dead ends: 13336 [2021-11-23 02:26:06,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-11-23 02:26:06,450 INFO L933 BasicCegarLoop]: 2525 mSDtfsCounter, 11812 mSDsluCounter, 14753 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11812 SdHoareTripleChecker+Valid, 17088 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:06,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11812 Valid, 17088 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 02:26:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13336 states. [2021-11-23 02:26:07,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13336 to 8017. [2021-11-23 02:26:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8017 states, 8003 states have (on average 1.27339747594652) internal successors, (10191), 8016 states have internal predecessors, (10191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:07,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8017 states to 8017 states and 10191 transitions. [2021-11-23 02:26:07,303 INFO L78 Accepts]: Start accepts. Automaton has 8017 states and 10191 transitions. Word has length 69 [2021-11-23 02:26:07,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:07,303 INFO L470 AbstractCegarLoop]: Abstraction has 8017 states and 10191 transitions. [2021-11-23 02:26:07,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 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) [2021-11-23 02:26:07,304 INFO L276 IsEmpty]: Start isEmpty. Operand 8017 states and 10191 transitions. [2021-11-23 02:26:07,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 02:26:07,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:07,313 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] [2021-11-23 02:26:07,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:26:07,314 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:26:07,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:07,314 INFO L85 PathProgramCache]: Analyzing trace with hash 554101842, now seen corresponding path program 1 times [2021-11-23 02:26:07,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:07,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032418697] [2021-11-23 02:26:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:07,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:07,607 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:07,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032418697] [2021-11-23 02:26:07,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032418697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:07,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:07,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 02:26:07,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016441816] [2021-11-23 02:26:07,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:07,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 02:26:07,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:07,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 02:26:07,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:26:07,609 INFO L87 Difference]: Start difference. First operand 8017 states and 10191 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 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) [2021-11-23 02:26:11,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:11,240 INFO L93 Difference]: Finished difference Result 15650 states and 20631 transitions. [2021-11-23 02:26:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:26:11,240 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 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 [2021-11-23 02:26:11,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:11,254 INFO L225 Difference]: With dead ends: 15650 [2021-11-23 02:26:11,254 INFO L226 Difference]: Without dead ends: 14568 [2021-11-23 02:26:11,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2021-11-23 02:26:11,259 INFO L933 BasicCegarLoop]: 2384 mSDtfsCounter, 15151 mSDsluCounter, 7155 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15151 SdHoareTripleChecker+Valid, 9462 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:11,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15151 Valid, 9462 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 02:26:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14568 states. [2021-11-23 02:26:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14568 to 7978. [2021-11-23 02:26:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7978 states, 7964 states have (on average 1.2738573581115018) internal successors, (10145), 7977 states have internal predecessors, (10145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:12,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 10145 transitions. [2021-11-23 02:26:12,178 INFO L78 Accepts]: Start accepts. Automaton has 7978 states and 10145 transitions. Word has length 69 [2021-11-23 02:26:12,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:12,178 INFO L470 AbstractCegarLoop]: Abstraction has 7978 states and 10145 transitions. [2021-11-23 02:26:12,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 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) [2021-11-23 02:26:12,178 INFO L276 IsEmpty]: Start isEmpty. Operand 7978 states and 10145 transitions. [2021-11-23 02:26:12,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 02:26:12,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:12,184 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] [2021-11-23 02:26:12,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:26:12,185 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:26:12,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:12,185 INFO L85 PathProgramCache]: Analyzing trace with hash -631202535, now seen corresponding path program 1 times [2021-11-23 02:26:12,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:12,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428981734] [2021-11-23 02:26:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:12,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:12,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:12,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428981734] [2021-11-23 02:26:12,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428981734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:12,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:12,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:12,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885875697] [2021-11-23 02:26:12,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:12,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:12,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:12,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:12,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:12,257 INFO L87 Difference]: Start difference. First operand 7978 states and 10145 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) [2021-11-23 02:26:13,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:13,387 INFO L93 Difference]: Finished difference Result 11213 states and 14406 transitions. [2021-11-23 02:26:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:13,387 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 [2021-11-23 02:26:13,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:13,397 INFO L225 Difference]: With dead ends: 11213 [2021-11-23 02:26:13,397 INFO L226 Difference]: Without dead ends: 6931 [2021-11-23 02:26:13,402 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 [2021-11-23 02:26:13,403 INFO L933 BasicCegarLoop]: 1792 mSDtfsCounter, 1769 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:13,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1769 Valid, 2360 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:13,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6931 states. [2021-11-23 02:26:14,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6931 to 6912. [2021-11-23 02:26:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6912 states, 6902 states have (on average 1.2812228339611706) internal successors, (8843), 6911 states have internal predecessors, (8843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 8843 transitions. [2021-11-23 02:26:14,244 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 8843 transitions. Word has length 69 [2021-11-23 02:26:14,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:14,245 INFO L470 AbstractCegarLoop]: Abstraction has 6912 states and 8843 transitions. [2021-11-23 02:26:14,245 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) [2021-11-23 02:26:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 8843 transitions. [2021-11-23 02:26:14,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 02:26:14,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:14,250 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] [2021-11-23 02:26:14,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 02:26:14,251 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:26:14,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:14,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1449115122, now seen corresponding path program 1 times [2021-11-23 02:26:14,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:14,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687946416] [2021-11-23 02:26:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:14,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:14,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:14,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687946416] [2021-11-23 02:26:14,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687946416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:14,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:14,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 02:26:14,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220939147] [2021-11-23 02:26:14,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:14,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:26:14,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:14,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:26:14,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:26:14,600 INFO L87 Difference]: Start difference. First operand 6912 states and 8843 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 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) [2021-11-23 02:26:18,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:18,492 INFO L93 Difference]: Finished difference Result 13902 states and 18449 transitions. [2021-11-23 02:26:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:26:18,492 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 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 [2021-11-23 02:26:18,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:18,505 INFO L225 Difference]: With dead ends: 13902 [2021-11-23 02:26:18,505 INFO L226 Difference]: Without dead ends: 12969 [2021-11-23 02:26:18,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-11-23 02:26:18,509 INFO L933 BasicCegarLoop]: 1911 mSDtfsCounter, 10749 mSDsluCounter, 10455 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10749 SdHoareTripleChecker+Valid, 12240 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:18,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10749 Valid, 12240 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 02:26:18,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12969 states. [2021-11-23 02:26:19,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12969 to 6909. [2021-11-23 02:26:19,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6909 states, 6899 states have (on average 1.2810552253949847) internal successors, (8838), 6908 states have internal predecessors, (8838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:19,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6909 states to 6909 states and 8838 transitions. [2021-11-23 02:26:19,429 INFO L78 Accepts]: Start accepts. Automaton has 6909 states and 8838 transitions. Word has length 70 [2021-11-23 02:26:19,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:19,430 INFO L470 AbstractCegarLoop]: Abstraction has 6909 states and 8838 transitions. [2021-11-23 02:26:19,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 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) [2021-11-23 02:26:19,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6909 states and 8838 transitions. [2021-11-23 02:26:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 02:26:19,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:19,435 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] [2021-11-23 02:26:19,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 02:26:19,435 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:26:19,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash 208427501, now seen corresponding path program 1 times [2021-11-23 02:26:19,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:19,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507254889] [2021-11-23 02:26:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:19,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:19,567 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:19,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507254889] [2021-11-23 02:26:19,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507254889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:19,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:19,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:26:19,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506536185] [2021-11-23 02:26:19,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:19,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:26:19,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:19,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:26:19,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:26:19,570 INFO L87 Difference]: Start difference. First operand 6909 states and 8838 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) [2021-11-23 02:26:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:23,821 INFO L93 Difference]: Finished difference Result 12081 states and 15787 transitions. [2021-11-23 02:26:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:26:23,822 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 [2021-11-23 02:26:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:23,833 INFO L225 Difference]: With dead ends: 12081 [2021-11-23 02:26:23,833 INFO L226 Difference]: Without dead ends: 11133 [2021-11-23 02:26:23,836 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 [2021-11-23 02:26:23,837 INFO L933 BasicCegarLoop]: 1064 mSDtfsCounter, 5626 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 4902 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5626 SdHoareTripleChecker+Valid, 5275 SdHoareTripleChecker+Invalid, 5042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 4902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:23,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5626 Valid, 5275 Invalid, 5042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 4902 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 02:26:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11133 states. [2021-11-23 02:26:24,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11133 to 6909. [2021-11-23 02:26:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6909 states, 6899 states have (on average 1.2809102768517175) internal successors, (8837), 6908 states have internal predecessors, (8837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6909 states to 6909 states and 8837 transitions. [2021-11-23 02:26:24,793 INFO L78 Accepts]: Start accepts. Automaton has 6909 states and 8837 transitions. Word has length 70 [2021-11-23 02:26:24,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:24,793 INFO L470 AbstractCegarLoop]: Abstraction has 6909 states and 8837 transitions. [2021-11-23 02:26:24,794 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) [2021-11-23 02:26:24,794 INFO L276 IsEmpty]: Start isEmpty. Operand 6909 states and 8837 transitions. [2021-11-23 02:26:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 02:26:24,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:24,801 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] [2021-11-23 02:26:24,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 02:26:24,801 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:26:24,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:24,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1665056200, now seen corresponding path program 1 times [2021-11-23 02:26:24,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:24,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079641377] [2021-11-23 02:26:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:24,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:24,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:24,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079641377] [2021-11-23 02:26:24,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079641377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:24,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:24,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:26:24,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371936673] [2021-11-23 02:26:24,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:24,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:26:24,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:24,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:26:24,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:26:24,938 INFO L87 Difference]: Start difference. First operand 6909 states and 8837 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) [2021-11-23 02:26:30,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:30,359 INFO L93 Difference]: Finished difference Result 15223 states and 19957 transitions. [2021-11-23 02:26:30,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:26:30,359 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 [2021-11-23 02:26:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:30,374 INFO L225 Difference]: With dead ends: 15223 [2021-11-23 02:26:30,374 INFO L226 Difference]: Without dead ends: 13726 [2021-11-23 02:26:30,378 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 [2021-11-23 02:26:30,379 INFO L933 BasicCegarLoop]: 1211 mSDtfsCounter, 3911 mSDsluCounter, 4912 mSDsCounter, 0 mSdLazyCounter, 6167 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3911 SdHoareTripleChecker+Valid, 6123 SdHoareTripleChecker+Invalid, 6311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 6167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:30,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3911 Valid, 6123 Invalid, 6311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 6167 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 02:26:30,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13726 states. [2021-11-23 02:26:31,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13726 to 6909. [2021-11-23 02:26:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6909 states, 6899 states have (on average 1.2807653283084506) internal successors, (8836), 6908 states have internal predecessors, (8836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:31,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6909 states to 6909 states and 8836 transitions. [2021-11-23 02:26:31,387 INFO L78 Accepts]: Start accepts. Automaton has 6909 states and 8836 transitions. Word has length 70 [2021-11-23 02:26:31,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:31,387 INFO L470 AbstractCegarLoop]: Abstraction has 6909 states and 8836 transitions. [2021-11-23 02:26:31,387 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) [2021-11-23 02:26:31,387 INFO L276 IsEmpty]: Start isEmpty. Operand 6909 states and 8836 transitions. [2021-11-23 02:26:31,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 02:26:31,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:31,392 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, 1, 1] [2021-11-23 02:26:31,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 02:26:31,392 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:26:31,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:31,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1937924781, now seen corresponding path program 1 times [2021-11-23 02:26:31,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:31,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382754340] [2021-11-23 02:26:31,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:31,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:31,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:31,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382754340] [2021-11-23 02:26:31,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382754340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:31,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:31,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:26:31,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879589210] [2021-11-23 02:26:31,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:31,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:26:31,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:31,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:26:31,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:26:31,505 INFO L87 Difference]: Start difference. First operand 6909 states and 8836 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 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) [2021-11-23 02:26:35,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:35,274 INFO L93 Difference]: Finished difference Result 12151 states and 15999 transitions. [2021-11-23 02:26:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:26:35,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 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 [2021-11-23 02:26:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:35,284 INFO L225 Difference]: With dead ends: 12151 [2021-11-23 02:26:35,284 INFO L226 Difference]: Without dead ends: 10310 [2021-11-23 02:26:35,287 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 [2021-11-23 02:26:35,288 INFO L933 BasicCegarLoop]: 995 mSDtfsCounter, 6896 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 2866 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6896 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:35,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6896 Valid, 3143 Invalid, 2935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2866 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 02:26:35,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10310 states. [2021-11-23 02:26:36,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10310 to 6909. [2021-11-23 02:26:36,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6909 states, 6899 states have (on average 1.2806203797651834) internal successors, (8835), 6908 states have internal predecessors, (8835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6909 states to 6909 states and 8835 transitions. [2021-11-23 02:26:36,297 INFO L78 Accepts]: Start accepts. Automaton has 6909 states and 8835 transitions. Word has length 70 [2021-11-23 02:26:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:36,297 INFO L470 AbstractCegarLoop]: Abstraction has 6909 states and 8835 transitions. [2021-11-23 02:26:36,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 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) [2021-11-23 02:26:36,297 INFO L276 IsEmpty]: Start isEmpty. Operand 6909 states and 8835 transitions. [2021-11-23 02:26:36,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 02:26:36,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:36,303 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] [2021-11-23 02:26:36,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 02:26:36,303 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:26:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1770122057, now seen corresponding path program 1 times [2021-11-23 02:26:36,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:36,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451042723] [2021-11-23 02:26:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:36,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:36,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:36,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451042723] [2021-11-23 02:26:36,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451042723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:36,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:36,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:36,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111644187] [2021-11-23 02:26:36,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:36,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:36,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:36,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:36,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:36,375 INFO L87 Difference]: Start difference. First operand 6909 states and 8835 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2021-11-23 02:26:37,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:37,684 INFO L93 Difference]: Finished difference Result 10705 states and 13807 transitions. [2021-11-23 02:26:37,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:37,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 [2021-11-23 02:26:37,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:37,692 INFO L225 Difference]: With dead ends: 10705 [2021-11-23 02:26:37,692 INFO L226 Difference]: Without dead ends: 6419 [2021-11-23 02:26:37,697 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 [2021-11-23 02:26:37,697 INFO L933 BasicCegarLoop]: 1398 mSDtfsCounter, 1395 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:37,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1395 Valid, 1826 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6419 states. [2021-11-23 02:26:38,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6419 to 6411. [2021-11-23 02:26:38,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 6404 states have (on average 1.2887257963772643) internal successors, (8253), 6410 states have internal predecessors, (8253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 8253 transitions. [2021-11-23 02:26:38,989 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 8253 transitions. Word has length 70 [2021-11-23 02:26:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:38,990 INFO L470 AbstractCegarLoop]: Abstraction has 6411 states and 8253 transitions. [2021-11-23 02:26:38,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2021-11-23 02:26:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 8253 transitions. [2021-11-23 02:26:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:26:38,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:38,995 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] [2021-11-23 02:26:38,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 02:26:38,996 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:26:38,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash 546797367, now seen corresponding path program 1 times [2021-11-23 02:26:38,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:38,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532012079] [2021-11-23 02:26:38,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:38,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:39,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:39,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532012079] [2021-11-23 02:26:39,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532012079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:39,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:39,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:39,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443789751] [2021-11-23 02:26:39,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:39,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:39,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:39,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:39,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:39,107 INFO L87 Difference]: Start difference. First operand 6411 states and 8253 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) [2021-11-23 02:26:41,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:41,192 INFO L93 Difference]: Finished difference Result 12676 states and 16602 transitions. [2021-11-23 02:26:41,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:41,193 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 [2021-11-23 02:26:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:41,201 INFO L225 Difference]: With dead ends: 12676 [2021-11-23 02:26:41,201 INFO L226 Difference]: Without dead ends: 9636 [2021-11-23 02:26:41,205 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 [2021-11-23 02:26:41,205 INFO L933 BasicCegarLoop]: 1539 mSDtfsCounter, 871 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:41,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 2730 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:41,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9636 states. [2021-11-23 02:26:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9636 to 9628. [2021-11-23 02:26:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9628 states, 9621 states have (on average 1.2925891279492776) internal successors, (12436), 9627 states have internal predecessors, (12436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9628 states to 9628 states and 12436 transitions. [2021-11-23 02:26:43,010 INFO L78 Accepts]: Start accepts. Automaton has 9628 states and 12436 transitions. Word has length 71 [2021-11-23 02:26:43,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:43,011 INFO L470 AbstractCegarLoop]: Abstraction has 9628 states and 12436 transitions. [2021-11-23 02:26:43,011 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) [2021-11-23 02:26:43,011 INFO L276 IsEmpty]: Start isEmpty. Operand 9628 states and 12436 transitions. [2021-11-23 02:26:43,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:26:43,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:43,015 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] [2021-11-23 02:26:43,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 02:26:43,015 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:26:43,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:43,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1939459057, now seen corresponding path program 1 times [2021-11-23 02:26:43,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:43,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528407963] [2021-11-23 02:26:43,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:43,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:43,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:43,082 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:43,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528407963] [2021-11-23 02:26:43,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528407963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:43,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:43,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:43,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285268008] [2021-11-23 02:26:43,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:43,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:43,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:43,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:43,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:43,084 INFO L87 Difference]: Start difference. First operand 9628 states and 12436 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) [2021-11-23 02:26:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:45,369 INFO L93 Difference]: Finished difference Result 14698 states and 19465 transitions. [2021-11-23 02:26:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:45,369 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 [2021-11-23 02:26:45,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:45,379 INFO L225 Difference]: With dead ends: 14698 [2021-11-23 02:26:45,379 INFO L226 Difference]: Without dead ends: 9973 [2021-11-23 02:26:45,385 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 [2021-11-23 02:26:45,385 INFO L933 BasicCegarLoop]: 1459 mSDtfsCounter, 877 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:45,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 2078 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:45,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2021-11-23 02:26:47,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 7859. [2021-11-23 02:26:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7859 states, 7852 states have (on average 1.2997962302598065) internal successors, (10206), 7858 states have internal predecessors, (10206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:47,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7859 states to 7859 states and 10206 transitions. [2021-11-23 02:26:47,074 INFO L78 Accepts]: Start accepts. Automaton has 7859 states and 10206 transitions. Word has length 71 [2021-11-23 02:26:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:47,075 INFO L470 AbstractCegarLoop]: Abstraction has 7859 states and 10206 transitions. [2021-11-23 02:26:47,075 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) [2021-11-23 02:26:47,075 INFO L276 IsEmpty]: Start isEmpty. Operand 7859 states and 10206 transitions. [2021-11-23 02:26:47,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:26:47,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:47,078 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] [2021-11-23 02:26:47,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 02:26:47,078 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:26:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:47,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1009351057, now seen corresponding path program 1 times [2021-11-23 02:26:47,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:47,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94055918] [2021-11-23 02:26:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:47,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:47,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:47,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94055918] [2021-11-23 02:26:47,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94055918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:47,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:47,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:47,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979939648] [2021-11-23 02:26:47,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:47,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:47,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:47,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:47,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:47,146 INFO L87 Difference]: Start difference. First operand 7859 states and 10206 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) [2021-11-23 02:26:50,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:50,221 INFO L93 Difference]: Finished difference Result 17035 states and 22448 transitions. [2021-11-23 02:26:50,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:50,221 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 [2021-11-23 02:26:50,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:50,234 INFO L225 Difference]: With dead ends: 17035 [2021-11-23 02:26:50,235 INFO L226 Difference]: Without dead ends: 11873 [2021-11-23 02:26:50,241 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 [2021-11-23 02:26:50,242 INFO L933 BasicCegarLoop]: 1605 mSDtfsCounter, 771 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:50,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 2759 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:50,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11873 states. [2021-11-23 02:26:53,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11873 to 11865. [2021-11-23 02:26:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11865 states, 11858 states have (on average 1.2922921234609546) internal successors, (15324), 11864 states have internal predecessors, (15324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11865 states to 11865 states and 15324 transitions. [2021-11-23 02:26:53,132 INFO L78 Accepts]: Start accepts. Automaton has 11865 states and 15324 transitions. Word has length 71 [2021-11-23 02:26:53,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:53,132 INFO L470 AbstractCegarLoop]: Abstraction has 11865 states and 15324 transitions. [2021-11-23 02:26:53,132 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) [2021-11-23 02:26:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 11865 states and 15324 transitions. [2021-11-23 02:26:53,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 02:26:53,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:53,136 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] [2021-11-23 02:26:53,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 02:26:53,136 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:26:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:53,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1569860402, now seen corresponding path program 1 times [2021-11-23 02:26:53,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:53,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353713949] [2021-11-23 02:26:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:53,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:53,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:53,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353713949] [2021-11-23 02:26:53,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353713949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:53,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:53,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:53,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124667321] [2021-11-23 02:26:53,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:53,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:53,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:53,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:53,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:53,202 INFO L87 Difference]: Start difference. First operand 11865 states and 15324 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) [2021-11-23 02:26:56,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:56,692 INFO L93 Difference]: Finished difference Result 22246 states and 29048 transitions. [2021-11-23 02:26:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:56,695 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 [2021-11-23 02:26:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:56,708 INFO L225 Difference]: With dead ends: 22246 [2021-11-23 02:26:56,708 INFO L226 Difference]: Without dead ends: 12099 [2021-11-23 02:26:56,718 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 [2021-11-23 02:26:56,719 INFO L933 BasicCegarLoop]: 1369 mSDtfsCounter, 1141 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:56,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1141 Valid, 1875 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:26:56,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12099 states. [2021-11-23 02:26:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12099 to 9715. [2021-11-23 02:26:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9715 states, 9708 states have (on average 1.3006798516687268) internal successors, (12627), 9714 states have internal predecessors, (12627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:26:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9715 states to 9715 states and 12627 transitions. [2021-11-23 02:26:59,363 INFO L78 Accepts]: Start accepts. Automaton has 9715 states and 12627 transitions. Word has length 72 [2021-11-23 02:26:59,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:59,364 INFO L470 AbstractCegarLoop]: Abstraction has 9715 states and 12627 transitions. [2021-11-23 02:26:59,364 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) [2021-11-23 02:26:59,364 INFO L276 IsEmpty]: Start isEmpty. Operand 9715 states and 12627 transitions. [2021-11-23 02:26:59,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 02:26:59,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:59,366 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] [2021-11-23 02:26:59,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 02:26:59,367 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:26:59,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:59,367 INFO L85 PathProgramCache]: Analyzing trace with hash -789977138, now seen corresponding path program 1 times [2021-11-23 02:26:59,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:59,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835338903] [2021-11-23 02:26:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:59,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:26:59,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:59,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835338903] [2021-11-23 02:26:59,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835338903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:59,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:59,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:59,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887143535] [2021-11-23 02:26:59,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:59,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:59,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:59,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:59,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:59,434 INFO L87 Difference]: Start difference. First operand 9715 states and 12627 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) [2021-11-23 02:27:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:02,355 INFO L93 Difference]: Finished difference Result 18145 states and 23876 transitions. [2021-11-23 02:27:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:27:02,356 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 [2021-11-23 02:27:02,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:02,365 INFO L225 Difference]: With dead ends: 18145 [2021-11-23 02:27:02,365 INFO L226 Difference]: Without dead ends: 9652 [2021-11-23 02:27:02,372 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 [2021-11-23 02:27:02,373 INFO L933 BasicCegarLoop]: 1265 mSDtfsCounter, 1162 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:02,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1162 Valid, 1692 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:27:02,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9652 states. [2021-11-23 02:27:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9652 to 8503. [2021-11-23 02:27:04,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8503 states, 8496 states have (on average 1.3110875706214689) internal successors, (11139), 8502 states have internal predecessors, (11139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:04,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8503 states to 8503 states and 11139 transitions. [2021-11-23 02:27:04,786 INFO L78 Accepts]: Start accepts. Automaton has 8503 states and 11139 transitions. Word has length 72 [2021-11-23 02:27:04,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:04,786 INFO L470 AbstractCegarLoop]: Abstraction has 8503 states and 11139 transitions. [2021-11-23 02:27:04,786 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) [2021-11-23 02:27:04,786 INFO L276 IsEmpty]: Start isEmpty. Operand 8503 states and 11139 transitions. [2021-11-23 02:27:04,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:27:04,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:04,788 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] [2021-11-23 02:27:04,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 02:27:04,789 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)] === [2021-11-23 02:27:04,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:04,789 INFO L85 PathProgramCache]: Analyzing trace with hash -104672906, now seen corresponding path program 1 times [2021-11-23 02:27:04,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:27:04,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480509517] [2021-11-23 02:27:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:04,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:27:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:04,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:04,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480509517] [2021-11-23 02:27:04,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480509517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:04,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:04,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:27:04,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078773494] [2021-11-23 02:27:04,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:04,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:27:04,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:27:04,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:27:04,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:27:04,916 INFO L87 Difference]: Start difference. First operand 8503 states and 11139 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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) [2021-11-23 02:27:12,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:12,491 INFO L93 Difference]: Finished difference Result 18956 states and 24810 transitions. [2021-11-23 02:27:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:27:12,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 [2021-11-23 02:27:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:12,510 INFO L225 Difference]: With dead ends: 18956 [2021-11-23 02:27:12,510 INFO L226 Difference]: Without dead ends: 17821 [2021-11-23 02:27:12,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:27:12,515 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 2681 mSDsluCounter, 3037 mSDsCounter, 0 mSdLazyCounter, 3486 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2681 SdHoareTripleChecker+Valid, 4024 SdHoareTripleChecker+Invalid, 3565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:12,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2681 Valid, 4024 Invalid, 3565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3486 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 02:27:12,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17821 states. [2021-11-23 02:27:14,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17821 to 8503. [2021-11-23 02:27:14,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8503 states, 8496 states have (on average 1.310969868173258) internal successors, (11138), 8502 states have internal predecessors, (11138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8503 states to 8503 states and 11138 transitions. [2021-11-23 02:27:15,001 INFO L78 Accepts]: Start accepts. Automaton has 8503 states and 11138 transitions. Word has length 73 [2021-11-23 02:27:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:15,001 INFO L470 AbstractCegarLoop]: Abstraction has 8503 states and 11138 transitions. [2021-11-23 02:27:15,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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) [2021-11-23 02:27:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 8503 states and 11138 transitions. [2021-11-23 02:27:15,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:27:15,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:15,003 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] [2021-11-23 02:27:15,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 02:27:15,004 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)] === [2021-11-23 02:27:15,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:15,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1330912566, now seen corresponding path program 1 times [2021-11-23 02:27:15,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:27:15,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584002285] [2021-11-23 02:27:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:15,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:27:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:15,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:15,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584002285] [2021-11-23 02:27:15,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584002285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:15,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:15,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:27:15,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091236905] [2021-11-23 02:27:15,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:15,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:27:15,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:27:15,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:27:15,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:27:15,135 INFO L87 Difference]: Start difference. First operand 8503 states and 11138 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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) [2021-11-23 02:27:20,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:20,643 INFO L93 Difference]: Finished difference Result 13802 states and 18026 transitions. [2021-11-23 02:27:20,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:27:20,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 [2021-11-23 02:27:20,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:20,657 INFO L225 Difference]: With dead ends: 13802 [2021-11-23 02:27:20,657 INFO L226 Difference]: Without dead ends: 13106 [2021-11-23 02:27:20,659 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 [2021-11-23 02:27:20,660 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 3924 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3924 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:20,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3924 Valid, 3079 Invalid, 2700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 02:27:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13106 states. [2021-11-23 02:27:23,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13106 to 8503. [2021-11-23 02:27:23,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8503 states, 8496 states have (on average 1.3108521657250471) internal successors, (11137), 8502 states have internal predecessors, (11137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:23,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8503 states to 8503 states and 11137 transitions. [2021-11-23 02:27:23,075 INFO L78 Accepts]: Start accepts. Automaton has 8503 states and 11137 transitions. Word has length 73 [2021-11-23 02:27:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:23,076 INFO L470 AbstractCegarLoop]: Abstraction has 8503 states and 11137 transitions. [2021-11-23 02:27:23,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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) [2021-11-23 02:27:23,076 INFO L276 IsEmpty]: Start isEmpty. Operand 8503 states and 11137 transitions. [2021-11-23 02:27:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:27:23,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:23,078 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] [2021-11-23 02:27:23,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 02:27:23,078 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)] === [2021-11-23 02:27:23,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash -24596204, now seen corresponding path program 1 times [2021-11-23 02:27:23,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:27:23,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476214242] [2021-11-23 02:27:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:23,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:27:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:23,243 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:23,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476214242] [2021-11-23 02:27:23,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476214242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:23,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:23,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:27:23,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762695798] [2021-11-23 02:27:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:23,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:27:23,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:27:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:27:23,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:27:23,246 INFO L87 Difference]: Start difference. First operand 8503 states and 11137 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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) [2021-11-23 02:27:29,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:29,174 INFO L93 Difference]: Finished difference Result 14492 states and 18924 transitions. [2021-11-23 02:27:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:27:29,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 [2021-11-23 02:27:29,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:29,188 INFO L225 Difference]: With dead ends: 14492 [2021-11-23 02:27:29,188 INFO L226 Difference]: Without dead ends: 13414 [2021-11-23 02:27:29,192 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 [2021-11-23 02:27:29,192 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 3802 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 3228 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3802 SdHoareTripleChecker+Valid, 3966 SdHoareTripleChecker+Invalid, 3319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:29,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3802 Valid, 3966 Invalid, 3319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3228 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 02:27:29,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13414 states. [2021-11-23 02:27:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13414 to 8503. [2021-11-23 02:27:31,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8503 states, 8496 states have (on average 1.310734463276836) internal successors, (11136), 8502 states have internal predecessors, (11136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:31,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8503 states to 8503 states and 11136 transitions. [2021-11-23 02:27:31,706 INFO L78 Accepts]: Start accepts. Automaton has 8503 states and 11136 transitions. Word has length 73 [2021-11-23 02:27:31,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:31,706 INFO L470 AbstractCegarLoop]: Abstraction has 8503 states and 11136 transitions. [2021-11-23 02:27:31,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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) [2021-11-23 02:27:31,706 INFO L276 IsEmpty]: Start isEmpty. Operand 8503 states and 11136 transitions. [2021-11-23 02:27:31,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:27:31,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:31,708 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] [2021-11-23 02:27:31,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 02:27:31,708 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:27:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash -355580974, now seen corresponding path program 1 times [2021-11-23 02:27:31,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:27:31,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936837092] [2021-11-23 02:27:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:31,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:27:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:31,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:31,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936837092] [2021-11-23 02:27:31,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936837092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:31,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:31,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:27:31,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94750050] [2021-11-23 02:27:31,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:31,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:27:31,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:27:31,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:27:31,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:27:31,819 INFO L87 Difference]: Start difference. First operand 8503 states and 11136 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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) [2021-11-23 02:27:36,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:36,907 INFO L93 Difference]: Finished difference Result 12588 states and 16331 transitions. [2021-11-23 02:27:36,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 02:27:36,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 [2021-11-23 02:27:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:36,919 INFO L225 Difference]: With dead ends: 12588 [2021-11-23 02:27:36,919 INFO L226 Difference]: Without dead ends: 11510 [2021-11-23 02:27:36,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-23 02:27:36,924 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 4398 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 2824 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4398 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:36,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4398 Valid, 3295 Invalid, 2938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2824 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 02:27:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2021-11-23 02:27:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 8503. [2021-11-23 02:27:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8503 states, 8496 states have (on average 1.3106167608286252) internal successors, (11135), 8502 states have internal predecessors, (11135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8503 states to 8503 states and 11135 transitions. [2021-11-23 02:27:39,432 INFO L78 Accepts]: Start accepts. Automaton has 8503 states and 11135 transitions. Word has length 73 [2021-11-23 02:27:39,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:39,432 INFO L470 AbstractCegarLoop]: Abstraction has 8503 states and 11135 transitions. [2021-11-23 02:27:39,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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) [2021-11-23 02:27:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 8503 states and 11135 transitions. [2021-11-23 02:27:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:27:39,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:39,434 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] [2021-11-23 02:27:39,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 02:27:39,434 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:27:39,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:39,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1699162345, now seen corresponding path program 1 times [2021-11-23 02:27:39,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:27:39,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838205430] [2021-11-23 02:27:39,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:39,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:27:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:39,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:39,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838205430] [2021-11-23 02:27:39,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838205430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:39,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:39,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:27:39,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029502659] [2021-11-23 02:27:39,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:39,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:27:39,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:27:39,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:27:39,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:27:39,551 INFO L87 Difference]: Start difference. First operand 8503 states and 11135 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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) [2021-11-23 02:27:45,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:45,202 INFO L93 Difference]: Finished difference Result 13802 states and 18023 transitions. [2021-11-23 02:27:45,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:27:45,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 [2021-11-23 02:27:45,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:45,216 INFO L225 Difference]: With dead ends: 13802 [2021-11-23 02:27:45,216 INFO L226 Difference]: Without dead ends: 13106 [2021-11-23 02:27:45,219 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 [2021-11-23 02:27:45,219 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 3897 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3897 SdHoareTripleChecker+Valid, 3253 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:45,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3897 Valid, 3253 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 02:27:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13106 states. [2021-11-23 02:27:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13106 to 8503. [2021-11-23 02:27:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8503 states, 8496 states have (on average 1.3104990583804144) internal successors, (11134), 8502 states have internal predecessors, (11134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:47,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8503 states to 8503 states and 11134 transitions. [2021-11-23 02:27:47,767 INFO L78 Accepts]: Start accepts. Automaton has 8503 states and 11134 transitions. Word has length 73 [2021-11-23 02:27:47,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:47,768 INFO L470 AbstractCegarLoop]: Abstraction has 8503 states and 11134 transitions. [2021-11-23 02:27:47,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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) [2021-11-23 02:27:47,768 INFO L276 IsEmpty]: Start isEmpty. Operand 8503 states and 11134 transitions. [2021-11-23 02:27:47,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:27:47,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:47,770 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] [2021-11-23 02:27:47,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 02:27:47,770 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:27:47,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:47,770 INFO L85 PathProgramCache]: Analyzing trace with hash 683575830, now seen corresponding path program 1 times [2021-11-23 02:27:47,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:27:47,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401859443] [2021-11-23 02:27:47,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:47,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:27:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:47,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:47,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401859443] [2021-11-23 02:27:47,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401859443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:47,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:47,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:27:47,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838708120] [2021-11-23 02:27:47,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:47,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:27:47,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:27:47,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:27:47,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:27:47,880 INFO L87 Difference]: Start difference. First operand 8503 states and 11134 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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) [2021-11-23 02:27:53,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:27:53,895 INFO L93 Difference]: Finished difference Result 14338 states and 18714 transitions. [2021-11-23 02:27:53,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:27:53,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 [2021-11-23 02:27:53,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:27:53,909 INFO L225 Difference]: With dead ends: 14338 [2021-11-23 02:27:53,910 INFO L226 Difference]: Without dead ends: 13642 [2021-11-23 02:27:53,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:27:53,913 INFO L933 BasicCegarLoop]: 819 mSDtfsCounter, 2707 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2707 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:27:53,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2707 Valid, 3507 Invalid, 2967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 02:27:53,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13642 states. [2021-11-23 02:27:56,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13642 to 8503. [2021-11-23 02:27:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8503 states, 8496 states have (on average 1.3103813559322033) internal successors, (11133), 8502 states have internal predecessors, (11133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:27:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8503 states to 8503 states and 11133 transitions. [2021-11-23 02:27:56,511 INFO L78 Accepts]: Start accepts. Automaton has 8503 states and 11133 transitions. Word has length 73 [2021-11-23 02:27:56,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:27:56,511 INFO L470 AbstractCegarLoop]: Abstraction has 8503 states and 11133 transitions. [2021-11-23 02:27:56,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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) [2021-11-23 02:27:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 8503 states and 11133 transitions. [2021-11-23 02:27:56,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 02:27:56,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:27:56,514 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] [2021-11-23 02:27:56,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 02:27:56,514 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:27:56,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:27:56,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1239610462, now seen corresponding path program 1 times [2021-11-23 02:27:56,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:27:56,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076442593] [2021-11-23 02:27:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:27:56,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:27:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:27:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:27:56,883 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:27:56,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076442593] [2021-11-23 02:27:56,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076442593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:27:56,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:27:56,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 02:27:56,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668143448] [2021-11-23 02:27:56,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:27:56,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:27:56,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:27:56,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:27:56,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-23 02:27:56,885 INFO L87 Difference]: Start difference. First operand 8503 states and 11133 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:06,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:06,889 INFO L93 Difference]: Finished difference Result 23326 states and 30692 transitions. [2021-11-23 02:28:06,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 02:28:06,889 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-23 02:28:06,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:06,914 INFO L225 Difference]: With dead ends: 23326 [2021-11-23 02:28:06,914 INFO L226 Difference]: Without dead ends: 22255 [2021-11-23 02:28:06,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2021-11-23 02:28:06,919 INFO L933 BasicCegarLoop]: 1614 mSDtfsCounter, 7374 mSDsluCounter, 8432 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7374 SdHoareTripleChecker+Valid, 9871 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:06,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7374 Valid, 9871 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:28:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22255 states. [2021-11-23 02:28:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22255 to 8482. [2021-11-23 02:28:09,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8482 states, 8476 states have (on average 1.310287871637565) internal successors, (11106), 8481 states have internal predecessors, (11106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8482 states to 8482 states and 11106 transitions. [2021-11-23 02:28:09,772 INFO L78 Accepts]: Start accepts. Automaton has 8482 states and 11106 transitions. Word has length 74 [2021-11-23 02:28:09,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:09,772 INFO L470 AbstractCegarLoop]: Abstraction has 8482 states and 11106 transitions. [2021-11-23 02:28:09,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:09,772 INFO L276 IsEmpty]: Start isEmpty. Operand 8482 states and 11106 transitions. [2021-11-23 02:28:09,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 02:28:09,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:09,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:09,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 02:28:09,774 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:28:09,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:09,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1819524005, now seen corresponding path program 1 times [2021-11-23 02:28:09,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:09,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701111803] [2021-11-23 02:28:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:09,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:28:10,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:10,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701111803] [2021-11-23 02:28:10,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701111803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:10,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:10,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 02:28:10,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244670167] [2021-11-23 02:28:10,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:10,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:28:10,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:10,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:28:10,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:28:10,049 INFO L87 Difference]: Start difference. First operand 8482 states and 11106 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:16,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:16,180 INFO L93 Difference]: Finished difference Result 14956 states and 19580 transitions. [2021-11-23 02:28:16,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:28:16,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-23 02:28:16,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:16,195 INFO L225 Difference]: With dead ends: 14956 [2021-11-23 02:28:16,195 INFO L226 Difference]: Without dead ends: 13814 [2021-11-23 02:28:16,198 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 [2021-11-23 02:28:16,198 INFO L933 BasicCegarLoop]: 1242 mSDtfsCounter, 5912 mSDsluCounter, 4271 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5912 SdHoareTripleChecker+Valid, 5455 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:16,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5912 Valid, 5455 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 02:28:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13814 states. [2021-11-23 02:28:18,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13814 to 8390. [2021-11-23 02:28:18,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8390 states, 8387 states have (on average 1.3108382019792537) internal successors, (10994), 8389 states have internal predecessors, (10994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:19,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 10994 transitions. [2021-11-23 02:28:19,000 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 10994 transitions. Word has length 74 [2021-11-23 02:28:19,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:19,000 INFO L470 AbstractCegarLoop]: Abstraction has 8390 states and 10994 transitions. [2021-11-23 02:28:19,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:19,001 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 10994 transitions. [2021-11-23 02:28:19,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:28:19,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:19,003 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, 1, 1, 1] [2021-11-23 02:28:19,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-23 02:28:19,003 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:28:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:19,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1506470067, now seen corresponding path program 1 times [2021-11-23 02:28:19,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:19,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829523617] [2021-11-23 02:28:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:19,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:28:19,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:19,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829523617] [2021-11-23 02:28:19,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829523617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:19,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:19,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 02:28:19,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288046272] [2021-11-23 02:28:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:19,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:28:19,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:19,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:28:19,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-23 02:28:19,343 INFO L87 Difference]: Start difference. First operand 8390 states and 10994 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:30,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:30,648 INFO L93 Difference]: Finished difference Result 24807 states and 32624 transitions. [2021-11-23 02:28:30,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 02:28:30,649 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-23 02:28:30,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:30,674 INFO L225 Difference]: With dead ends: 24807 [2021-11-23 02:28:30,674 INFO L226 Difference]: Without dead ends: 23731 [2021-11-23 02:28:30,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=621, Unknown=0, NotChecked=0, Total=812 [2021-11-23 02:28:30,680 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 6910 mSDsluCounter, 10364 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6910 SdHoareTripleChecker+Valid, 11685 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:30,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6910 Valid, 11685 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:28:30,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23731 states. [2021-11-23 02:28:33,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23731 to 8364. [2021-11-23 02:28:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8364 states, 8362 states have (on average 1.3110499880411386) internal successors, (10963), 8363 states have internal predecessors, (10963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8364 states to 8364 states and 10963 transitions. [2021-11-23 02:28:33,563 INFO L78 Accepts]: Start accepts. Automaton has 8364 states and 10963 transitions. Word has length 76 [2021-11-23 02:28:33,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:33,563 INFO L470 AbstractCegarLoop]: Abstraction has 8364 states and 10963 transitions. [2021-11-23 02:28:33,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:33,563 INFO L276 IsEmpty]: Start isEmpty. Operand 8364 states and 10963 transitions. [2021-11-23 02:28:33,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:28:33,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:33,565 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] [2021-11-23 02:28:33,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-23 02:28:33,565 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:28:33,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:33,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1520723396, now seen corresponding path program 1 times [2021-11-23 02:28:33,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:33,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136520572] [2021-11-23 02:28:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:33,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:28:33,859 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:33,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136520572] [2021-11-23 02:28:33,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136520572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:33,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:33,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 02:28:33,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13252037] [2021-11-23 02:28:33,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:33,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:28:33,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:33,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:28:33,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:28:33,861 INFO L87 Difference]: Start difference. First operand 8364 states and 10963 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:40,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:40,919 INFO L93 Difference]: Finished difference Result 15568 states and 20435 transitions. [2021-11-23 02:28:40,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:28:40,920 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-23 02:28:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:40,935 INFO L225 Difference]: With dead ends: 15568 [2021-11-23 02:28:40,935 INFO L226 Difference]: Without dead ends: 14874 [2021-11-23 02:28:40,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:28:40,938 INFO L933 BasicCegarLoop]: 1283 mSDtfsCounter, 5514 mSDsluCounter, 5032 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5514 SdHoareTripleChecker+Valid, 6210 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:40,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5514 Valid, 6210 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 02:28:40,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14874 states. [2021-11-23 02:28:43,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14874 to 8360. [2021-11-23 02:28:43,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8360 states, 8359 states have (on average 1.3109223591338677) internal successors, (10958), 8359 states have internal predecessors, (10958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:43,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8360 states to 8360 states and 10958 transitions. [2021-11-23 02:28:43,830 INFO L78 Accepts]: Start accepts. Automaton has 8360 states and 10958 transitions. Word has length 76 [2021-11-23 02:28:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:43,830 INFO L470 AbstractCegarLoop]: Abstraction has 8360 states and 10958 transitions. [2021-11-23 02:28:43,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:43,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8360 states and 10958 transitions. [2021-11-23 02:28:43,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 02:28:43,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:43,833 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] [2021-11-23 02:28:43,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-23 02:28:43,833 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)] === [2021-11-23 02:28:43,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:43,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1562760404, now seen corresponding path program 1 times [2021-11-23 02:28:43,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:43,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106462243] [2021-11-23 02:28:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:43,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:43,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:28:43,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:43,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106462243] [2021-11-23 02:28:43,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106462243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:43,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:43,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:28:43,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698108747] [2021-11-23 02:28:43,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:43,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:28:43,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:43,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:28:43,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:28:43,930 INFO L87 Difference]: Start difference. First operand 8360 states and 10958 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:48,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:48,727 INFO L93 Difference]: Finished difference Result 18768 states and 24978 transitions. [2021-11-23 02:28:48,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:28:48,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 02:28:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:48,748 INFO L225 Difference]: With dead ends: 18768 [2021-11-23 02:28:48,748 INFO L226 Difference]: Without dead ends: 11878 [2021-11-23 02:28:48,756 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 [2021-11-23 02:28:48,756 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 1544 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:48,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 1783 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:28:48,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11878 states. [2021-11-23 02:28:52,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11878 to 10475. [2021-11-23 02:28:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10475 states, 10474 states have (on average 1.310578575520336) internal successors, (13727), 10474 states have internal predecessors, (13727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:52,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10475 states to 10475 states and 13727 transitions. [2021-11-23 02:28:52,787 INFO L78 Accepts]: Start accepts. Automaton has 10475 states and 13727 transitions. Word has length 77 [2021-11-23 02:28:52,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:52,787 INFO L470 AbstractCegarLoop]: Abstraction has 10475 states and 13727 transitions. [2021-11-23 02:28:52,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:28:52,788 INFO L276 IsEmpty]: Start isEmpty. Operand 10475 states and 13727 transitions. [2021-11-23 02:28:52,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 02:28:52,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:52,790 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] [2021-11-23 02:28:52,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-23 02:28:52,791 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)] === [2021-11-23 02:28:52,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1381735744, now seen corresponding path program 1 times [2021-11-23 02:28:52,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:52,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378300611] [2021-11-23 02:28:52,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:52,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:28:52,861 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:52,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378300611] [2021-11-23 02:28:52,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378300611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:52,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:52,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:28:52,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667883669] [2021-11-23 02:28:52,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:52,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:28:52,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:52,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:28:52,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:28:52,863 INFO L87 Difference]: Start difference. First operand 10475 states and 13727 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) [2021-11-23 02:28:58,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:58,797 INFO L93 Difference]: Finished difference Result 24270 states and 32216 transitions. [2021-11-23 02:28:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:28:58,798 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 [2021-11-23 02:28:58,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:58,814 INFO L225 Difference]: With dead ends: 24270 [2021-11-23 02:28:58,814 INFO L226 Difference]: Without dead ends: 15404 [2021-11-23 02:28:58,821 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 [2021-11-23 02:28:58,821 INFO L933 BasicCegarLoop]: 1118 mSDtfsCounter, 720 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:58,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 1488 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:28:58,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15404 states. [2021-11-23 02:29:04,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15404 to 14444. [2021-11-23 02:29:04,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14444 states, 14443 states have (on average 1.307069168455307) internal successors, (18878), 14443 states have internal predecessors, (18878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:29:04,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14444 states to 14444 states and 18878 transitions. [2021-11-23 02:29:04,360 INFO L78 Accepts]: Start accepts. Automaton has 14444 states and 18878 transitions. Word has length 78 [2021-11-23 02:29:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:04,361 INFO L470 AbstractCegarLoop]: Abstraction has 14444 states and 18878 transitions. [2021-11-23 02:29:04,361 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) [2021-11-23 02:29:04,361 INFO L276 IsEmpty]: Start isEmpty. Operand 14444 states and 18878 transitions. [2021-11-23 02:29:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 02:29:04,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:04,364 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] [2021-11-23 02:29:04,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-23 02:29:04,364 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)] === [2021-11-23 02:29:04,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1627554323, now seen corresponding path program 1 times [2021-11-23 02:29:04,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:04,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415659847] [2021-11-23 02:29:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:04,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:29:04,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:04,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415659847] [2021-11-23 02:29:04,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415659847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:04,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:04,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:29:04,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099543659] [2021-11-23 02:29:04,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:04,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:29:04,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:04,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:29:04,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:29:04,435 INFO L87 Difference]: Start difference. First operand 14444 states and 18878 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:29:12,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:12,796 INFO L93 Difference]: Finished difference Result 34366 states and 45377 transitions. [2021-11-23 02:29:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:29:12,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-23 02:29:12,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:12,821 INFO L225 Difference]: With dead ends: 34366 [2021-11-23 02:29:12,821 INFO L226 Difference]: Without dead ends: 21724 [2021-11-23 02:29:12,830 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 [2021-11-23 02:29:12,831 INFO L933 BasicCegarLoop]: 1104 mSDtfsCounter, 613 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:12,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1567 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:29:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21724 states. [2021-11-23 02:29:20,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21724 to 20290. [2021-11-23 02:29:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20290 states, 20289 states have (on average 1.300556952042979) internal successors, (26387), 20289 states have internal predecessors, (26387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:29:20,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20290 states to 20290 states and 26387 transitions. [2021-11-23 02:29:20,846 INFO L78 Accepts]: Start accepts. Automaton has 20290 states and 26387 transitions. Word has length 79 [2021-11-23 02:29:20,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:20,846 INFO L470 AbstractCegarLoop]: Abstraction has 20290 states and 26387 transitions. [2021-11-23 02:29:20,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:29:20,846 INFO L276 IsEmpty]: Start isEmpty. Operand 20290 states and 26387 transitions. [2021-11-23 02:29:20,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 02:29:20,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:20,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:29:20,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-23 02:29:20,848 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)] === [2021-11-23 02:29:20,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:20,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2102975811, now seen corresponding path program 1 times [2021-11-23 02:29:20,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:20,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661597345] [2021-11-23 02:29:20,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:20,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:29:20,906 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:20,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661597345] [2021-11-23 02:29:20,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661597345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:20,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:20,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:29:20,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504752642] [2021-11-23 02:29:20,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:20,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:29:20,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:20,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:29:20,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:29:20,909 INFO L87 Difference]: Start difference. First operand 20290 states and 26387 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2021-11-23 02:29:32,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:32,308 INFO L93 Difference]: Finished difference Result 48530 states and 63668 transitions. [2021-11-23 02:29:32,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:29:32,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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 [2021-11-23 02:29:32,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:32,347 INFO L225 Difference]: With dead ends: 48530 [2021-11-23 02:29:32,347 INFO L226 Difference]: Without dead ends: 30534 [2021-11-23 02:29:32,362 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 [2021-11-23 02:29:32,362 INFO L933 BasicCegarLoop]: 1085 mSDtfsCounter, 479 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:32,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 1659 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:29:32,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30534 states. [2021-11-23 02:29:43,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30534 to 28454. [2021-11-23 02:29:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28454 states, 28453 states have (on average 1.292060591150318) internal successors, (36763), 28453 states have internal predecessors, (36763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:29:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28454 states to 28454 states and 36763 transitions. [2021-11-23 02:29:43,581 INFO L78 Accepts]: Start accepts. Automaton has 28454 states and 36763 transitions. Word has length 82 [2021-11-23 02:29:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:43,581 INFO L470 AbstractCegarLoop]: Abstraction has 28454 states and 36763 transitions. [2021-11-23 02:29:43,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2021-11-23 02:29:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 28454 states and 36763 transitions. [2021-11-23 02:29:43,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 02:29:43,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:43,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:29:43,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-23 02:29:43,585 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:29:43,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:43,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1976526132, now seen corresponding path program 1 times [2021-11-23 02:29:43,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:43,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752133195] [2021-11-23 02:29:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:43,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:29:43,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:43,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752133195] [2021-11-23 02:29:43,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752133195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:43,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:43,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 02:29:43,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131429003] [2021-11-23 02:29:43,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:43,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:29:43,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:43,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:29:43,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:29:43,731 INFO L87 Difference]: Start difference. First operand 28454 states and 36763 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2021-11-23 02:30:14,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:14,811 INFO L93 Difference]: Finished difference Result 69052 states and 88750 transitions. [2021-11-23 02:30:14,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 02:30:14,812 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 [2021-11-23 02:30:14,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:14,909 INFO L225 Difference]: With dead ends: 69052 [2021-11-23 02:30:14,909 INFO L226 Difference]: Without dead ends: 69050 [2021-11-23 02:30:14,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2021-11-23 02:30:14,921 INFO L933 BasicCegarLoop]: 1213 mSDtfsCounter, 5127 mSDsluCounter, 4712 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5127 SdHoareTripleChecker+Valid, 5900 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:14,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5127 Valid, 5900 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:30:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69050 states. [2021-11-23 02:30:28,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69050 to 30852. [2021-11-23 02:30:28,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30852 states, 30851 states have (on average 1.2885805970633042) internal successors, (39754), 30851 states have internal predecessors, (39754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:30:28,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30852 states to 30852 states and 39754 transitions. [2021-11-23 02:30:28,782 INFO L78 Accepts]: Start accepts. Automaton has 30852 states and 39754 transitions. Word has length 87 [2021-11-23 02:30:28,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:28,783 INFO L470 AbstractCegarLoop]: Abstraction has 30852 states and 39754 transitions. [2021-11-23 02:30:28,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2021-11-23 02:30:28,783 INFO L276 IsEmpty]: Start isEmpty. Operand 30852 states and 39754 transitions. [2021-11-23 02:30:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 02:30:28,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:28,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:28,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-23 02:30:28,789 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-23 02:30:28,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:28,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1654709649, now seen corresponding path program 1 times [2021-11-23 02:30:28,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:28,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531217755] [2021-11-23 02:30:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:28,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:30:28,952 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:28,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531217755] [2021-11-23 02:30:28,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531217755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:28,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:28,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 02:30:28,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265544485] [2021-11-23 02:30:28,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:28,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:30:28,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:28,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:30:28,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:30:28,954 INFO L87 Difference]: Start difference. First operand 30852 states and 39754 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:01,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:01,259 INFO L93 Difference]: Finished difference Result 67260 states and 86507 transitions. [2021-11-23 02:31:01,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 02:31:01,260 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-23 02:31:01,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:01,369 INFO L225 Difference]: With dead ends: 67260 [2021-11-23 02:31:01,369 INFO L226 Difference]: Without dead ends: 67258 [2021-11-23 02:31:01,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2021-11-23 02:31:01,384 INFO L933 BasicCegarLoop]: 1214 mSDtfsCounter, 4298 mSDsluCounter, 5340 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4298 SdHoareTripleChecker+Valid, 6518 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:01,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4298 Valid, 6518 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:31:01,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67258 states.