./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7c220fedd5daa4b7bd4bc3bda2bd43ccc828cdccab93a1f1d73e2bd64ffc19c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:01:22,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:01:22,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:01:23,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:01:23,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:01:23,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:01:23,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:01:23,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:01:23,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:01:23,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:01:23,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:01:23,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:01:23,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:01:23,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:01:23,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:01:23,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:01:23,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:01:23,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:01:23,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:01:23,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:01:23,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:01:23,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:01:23,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:01:23,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:01:23,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:01:23,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:01:23,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:01:23,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:01:23,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:01:23,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:01:23,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:01:23,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:01:23,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:01:23,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:01:23,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:01:23,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:01:23,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:01:23,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:01:23,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:01:23,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:01:23,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:01:23,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:01:23,161 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:01:23,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:01:23,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:01:23,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:01:23,163 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:01:23,163 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:01:23,163 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:01:23,163 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:01:23,164 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:01:23,164 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:01:23,171 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:01:23,171 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:01:23,171 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:01:23,172 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:01:23,172 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:01:23,172 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:01:23,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:01:23,173 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:01:23,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:01:23,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:01:23,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:01:23,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:01:23,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:01:23,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:01:23,174 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:01:23,174 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:01:23,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:01:23,175 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:01:23,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:01:23,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:01:23,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:01:23,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:01:23,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:01:23,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:01:23,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:01:23,178 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:01:23,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:01:23,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:01:23,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:01:23,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:01:23,179 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7c220fedd5daa4b7bd4bc3bda2bd43ccc828cdccab93a1f1d73e2bd64ffc19c [2021-11-19 14:01:23,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:01:23,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:01:23,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:01:23,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:01:23,467 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:01:23,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-19 14:01:23,542 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/data/cef033811/2099a6be0bce4e2187363c0fd29afd16/FLAG8c2152b02 [2021-11-19 14:01:24,420 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:01:24,421 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-19 14:01:24,477 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/data/cef033811/2099a6be0bce4e2187363c0fd29afd16/FLAG8c2152b02 [2021-11-19 14:01:24,910 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/data/cef033811/2099a6be0bce4e2187363c0fd29afd16 [2021-11-19 14:01:24,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:01:24,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:01:24,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:01:24,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:01:24,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:01:24,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:01:24" (1/1) ... [2021-11-19 14:01:24,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebbade6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:24, skipping insertion in model container [2021-11-19 14:01:24,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:01:24" (1/1) ... [2021-11-19 14:01:24,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:01:25,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:01:26,140 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[69402,69415] [2021-11-19 14:01:26,282 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[100988,101001] [2021-11-19 14:01:26,341 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[116766,116779] [2021-11-19 14:01:26,383 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[124651,124664] [2021-11-19 14:01:26,398 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[128577,128590] [2021-11-19 14:01:26,414 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132299,132312] [2021-11-19 14:01:26,518 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[163377,163390] [2021-11-19 14:01:26,595 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[178940,178953] [2021-11-19 14:01:26,623 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[186820,186833] [2021-11-19 14:01:26,638 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[190741,190754] [2021-11-19 14:01:26,652 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[194458,194471] [2021-11-19 14:01:26,708 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[211203,211216] [2021-11-19 14:01:26,735 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[219083,219096] [2021-11-19 14:01:26,751 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[223004,223017] [2021-11-19 14:01:26,766 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[226721,226734] [2021-11-19 14:01:26,787 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231221,231234] [2021-11-19 14:01:26,801 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[234989,235002] [2021-11-19 14:01:26,816 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[238910,238923] [2021-11-19 14:01:26,833 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[242627,242640] [2021-11-19 14:01:26,849 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[246748,246761] [2021-11-19 14:01:26,863 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[250481,250494] [2021-11-19 14:01:26,877 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[254398,254411] [2021-11-19 14:01:26,932 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:01:26,945 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:01:27,400 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[69402,69415] [2021-11-19 14:01:27,490 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[100988,101001] [2021-11-19 14:01:27,534 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[116766,116779] [2021-11-19 14:01:27,583 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[124651,124664] [2021-11-19 14:01:27,596 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[128577,128590] [2021-11-19 14:01:27,608 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132299,132312] [2021-11-19 14:01:27,693 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[163377,163390] [2021-11-19 14:01:27,737 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[178940,178953] [2021-11-19 14:01:27,760 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[186820,186833] [2021-11-19 14:01:27,773 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[190741,190754] [2021-11-19 14:01:27,785 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[194458,194471] [2021-11-19 14:01:27,839 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[211203,211216] [2021-11-19 14:01:27,862 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[219083,219096] [2021-11-19 14:01:27,882 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[223004,223017] [2021-11-19 14:01:27,894 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[226721,226734] [2021-11-19 14:01:27,909 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231221,231234] [2021-11-19 14:01:27,921 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[234989,235002] [2021-11-19 14:01:27,934 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[238910,238923] [2021-11-19 14:01:27,945 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[242627,242640] [2021-11-19 14:01:27,958 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[246748,246761] [2021-11-19 14:01:27,970 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[250481,250494] [2021-11-19 14:01:27,982 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_f2a0aa96-3343-4efa-9f8f-affb007038a9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[254398,254411] [2021-11-19 14:01:28,016 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:01:28,050 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:01:28,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:28 WrapperNode [2021-11-19 14:01:28,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:01:28,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:01:28,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:01:28,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:01:28,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:28" (1/1) ... [2021-11-19 14:01:28,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:28" (1/1) ... [2021-11-19 14:01:28,293 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11455 [2021-11-19 14:01:28,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:01:28,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:01:28,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:01:28,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:01:28,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:28" (1/1) ... [2021-11-19 14:01:28,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:28" (1/1) ... [2021-11-19 14:01:28,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:28" (1/1) ... [2021-11-19 14:01:28,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:28" (1/1) ... [2021-11-19 14:01:28,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:28" (1/1) ... [2021-11-19 14:01:28,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:28" (1/1) ... [2021-11-19 14:01:28,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:28" (1/1) ... [2021-11-19 14:01:28,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:01:28,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:01:28,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:01:28,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:01:28,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:28" (1/1) ... [2021-11-19 14:01:28,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:01:28,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:01:28,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:01:28,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:01:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:01:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:01:28,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:01:28,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:01:29,087 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:01:29,089 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:01:34,199 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:01:34,593 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:01:34,593 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:01:34,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:01:34 BoogieIcfgContainer [2021-11-19 14:01:34,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:01:34,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:01:34,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:01:34,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:01:34,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:01:24" (1/3) ... [2021-11-19 14:01:34,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cbb60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:01:34, skipping insertion in model container [2021-11-19 14:01:34,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:28" (2/3) ... [2021-11-19 14:01:34,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cbb60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:01:34, skipping insertion in model container [2021-11-19 14:01:34,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:01:34" (3/3) ... [2021-11-19 14:01:34,608 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-19 14:01:34,613 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:01:34,613 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-11-19 14:01:34,669 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:01:34,676 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:01:34,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-11-19 14:01:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 2311 states, 2288 states have (on average 1.8229895104895104) internal successors, (4171), 2310 states have internal predecessors, (4171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:34,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-19 14:01:34,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:34,759 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] [2021-11-19 14:01:34,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:34,765 INFO L85 PathProgramCache]: Analyzing trace with hash 474104121, now seen corresponding path program 1 times [2021-11-19 14:01:34,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:34,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689732307] [2021-11-19 14:01:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:34,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:35,242 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:35,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689732307] [2021-11-19 14:01:35,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689732307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:35,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:35,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:01:35,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718068758] [2021-11-19 14:01:35,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:35,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:01:35,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:35,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:01:35,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:01:35,296 INFO L87 Difference]: Start difference. First operand has 2311 states, 2288 states have (on average 1.8229895104895104) internal successors, (4171), 2310 states have internal predecessors, (4171), 0 states have call successors, (0), 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 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:37,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:37,358 INFO L93 Difference]: Finished difference Result 2737 states and 4863 transitions. [2021-11-19 14:01:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:01:37,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-19 14:01:37,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:37,392 INFO L225 Difference]: With dead ends: 2737 [2021-11-19 14:01:37,392 INFO L226 Difference]: Without dead ends: 1585 [2021-11-19 14:01:37,402 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 [2021-11-19 14:01:37,406 INFO L933 BasicCegarLoop]: 1484 mSDtfsCounter, 8232 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8232 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:37,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8232 Valid, 1524 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:01:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-11-19 14:01:37,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1585. [2021-11-19 14:01:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1563 states have (on average 1.3122200895713372) internal successors, (2051), 1584 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2051 transitions. [2021-11-19 14:01:37,537 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2051 transitions. Word has length 85 [2021-11-19 14:01:37,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:37,538 INFO L470 AbstractCegarLoop]: Abstraction has 1585 states and 2051 transitions. [2021-11-19 14:01:37,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:37,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2051 transitions. [2021-11-19 14:01:37,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-19 14:01:37,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:37,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:37,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:01:37,546 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:37,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:37,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1379625602, now seen corresponding path program 1 times [2021-11-19 14:01:37,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:37,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270523332] [2021-11-19 14:01:37,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:37,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:37,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:37,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:37,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270523332] [2021-11-19 14:01:37,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270523332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:37,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:37,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:01:37,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852689195] [2021-11-19 14:01:37,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:37,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:01:37,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:37,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:01:37,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:01:37,796 INFO L87 Difference]: Start difference. First operand 1585 states and 2051 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:39,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:39,176 INFO L93 Difference]: Finished difference Result 2213 states and 2882 transitions. [2021-11-19 14:01:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:01:39,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-19 14:01:39,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:39,186 INFO L225 Difference]: With dead ends: 2213 [2021-11-19 14:01:39,186 INFO L226 Difference]: Without dead ends: 1457 [2021-11-19 14:01:39,188 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 [2021-11-19 14:01:39,190 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 5518 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5518 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:39,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5518 Valid, 811 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:01:39,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-11-19 14:01:39,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1457. [2021-11-19 14:01:39,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1435 states have (on average 1.3282229965156795) internal successors, (1906), 1456 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1906 transitions. [2021-11-19 14:01:39,302 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1906 transitions. Word has length 85 [2021-11-19 14:01:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:39,303 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 1906 transitions. [2021-11-19 14:01:39,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:39,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1906 transitions. [2021-11-19 14:01:39,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-19 14:01:39,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:39,308 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] [2021-11-19 14:01:39,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 14:01:39,309 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:39,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:39,309 INFO L85 PathProgramCache]: Analyzing trace with hash -546397045, now seen corresponding path program 1 times [2021-11-19 14:01:39,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:39,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415207394] [2021-11-19 14:01:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:39,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:39,405 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:39,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415207394] [2021-11-19 14:01:39,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415207394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:39,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:39,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:01:39,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034167499] [2021-11-19 14:01:39,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:39,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:01:39,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:39,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:01:39,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:01:39,409 INFO L87 Difference]: Start difference. First operand 1457 states and 1906 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:40,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:40,442 INFO L93 Difference]: Finished difference Result 1957 states and 2560 transitions. [2021-11-19 14:01:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:01:40,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-19 14:01:40,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:40,451 INFO L225 Difference]: With dead ends: 1957 [2021-11-19 14:01:40,451 INFO L226 Difference]: Without dead ends: 1217 [2021-11-19 14:01:40,453 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 [2021-11-19 14:01:40,454 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 4741 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4741 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:40,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4741 Valid, 733 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:01:40,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-11-19 14:01:40,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2021-11-19 14:01:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1195 states have (on average 1.3464435146443514) internal successors, (1609), 1216 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1609 transitions. [2021-11-19 14:01:40,512 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1609 transitions. Word has length 85 [2021-11-19 14:01:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:40,513 INFO L470 AbstractCegarLoop]: Abstraction has 1217 states and 1609 transitions. [2021-11-19 14:01:40,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:40,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1609 transitions. [2021-11-19 14:01:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-19 14:01:40,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:40,517 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] [2021-11-19 14:01:40,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 14:01:40,518 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:40,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:40,519 INFO L85 PathProgramCache]: Analyzing trace with hash 828162727, now seen corresponding path program 1 times [2021-11-19 14:01:40,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:40,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744901998] [2021-11-19 14:01:40,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:40,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:40,604 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:40,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744901998] [2021-11-19 14:01:40,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744901998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:40,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:40,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:01:40,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402760608] [2021-11-19 14:01:40,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:40,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:01:40,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:40,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:01:40,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:01:40,607 INFO L87 Difference]: Start difference. First operand 1217 states and 1609 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:41,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:41,527 INFO L93 Difference]: Finished difference Result 1752 states and 2322 transitions. [2021-11-19 14:01:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:01:41,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-19 14:01:41,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:41,535 INFO L225 Difference]: With dead ends: 1752 [2021-11-19 14:01:41,536 INFO L226 Difference]: Without dead ends: 1126 [2021-11-19 14:01:41,537 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 [2021-11-19 14:01:41,541 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 4439 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4439 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:41,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4439 Valid, 692 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:01:41,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-11-19 14:01:41,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2021-11-19 14:01:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1104 states have (on average 1.3596014492753623) internal successors, (1501), 1125 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:41,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1501 transitions. [2021-11-19 14:01:41,603 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1501 transitions. Word has length 86 [2021-11-19 14:01:41,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:41,604 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1501 transitions. [2021-11-19 14:01:41,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:41,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1501 transitions. [2021-11-19 14:01:41,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 14:01:41,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:41,614 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] [2021-11-19 14:01:41,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 14:01:41,621 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:41,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:41,624 INFO L85 PathProgramCache]: Analyzing trace with hash -379387896, now seen corresponding path program 1 times [2021-11-19 14:01:41,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:41,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110783156] [2021-11-19 14:01:41,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:41,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:41,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:41,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:41,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110783156] [2021-11-19 14:01:41,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110783156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:41,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:41,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:01:41,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637424652] [2021-11-19 14:01:41,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:41,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:01:41,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:41,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:01:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:01:41,836 INFO L87 Difference]: Start difference. First operand 1126 states and 1501 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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) [2021-11-19 14:01:42,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:42,564 INFO L93 Difference]: Finished difference Result 1418 states and 1849 transitions. [2021-11-19 14:01:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:01:42,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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 [2021-11-19 14:01:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:42,570 INFO L225 Difference]: With dead ends: 1418 [2021-11-19 14:01:42,570 INFO L226 Difference]: Without dead ends: 861 [2021-11-19 14:01:42,571 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 [2021-11-19 14:01:42,572 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 3296 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3296 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:42,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3296 Valid, 547 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:01:42,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-11-19 14:01:42,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2021-11-19 14:01:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 839 states have (on average 1.3623361144219308) internal successors, (1143), 860 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:42,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1143 transitions. [2021-11-19 14:01:42,620 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1143 transitions. Word has length 87 [2021-11-19 14:01:42,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:42,620 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1143 transitions. [2021-11-19 14:01:42,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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) [2021-11-19 14:01:42,621 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1143 transitions. [2021-11-19 14:01:42,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-19 14:01:42,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:42,623 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] [2021-11-19 14:01:42,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 14:01:42,624 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:42,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:42,625 INFO L85 PathProgramCache]: Analyzing trace with hash -211366857, now seen corresponding path program 1 times [2021-11-19 14:01:42,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:42,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808188067] [2021-11-19 14:01:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:42,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:42,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:42,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808188067] [2021-11-19 14:01:42,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808188067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:42,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:42,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:01:42,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216877478] [2021-11-19 14:01:42,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:42,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:01:42,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:42,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:01:42,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:01:42,750 INFO L87 Difference]: Start difference. First operand 861 states and 1143 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:43,236 INFO L93 Difference]: Finished difference Result 1023 states and 1312 transitions. [2021-11-19 14:01:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:01:43,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-19 14:01:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:43,240 INFO L225 Difference]: With dead ends: 1023 [2021-11-19 14:01:43,240 INFO L226 Difference]: Without dead ends: 602 [2021-11-19 14:01:43,241 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 [2021-11-19 14:01:43,242 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 2223 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:43,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2223 Valid, 425 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:01:43,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-19 14:01:43,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2021-11-19 14:01:43,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.360344827586207) internal successors, (789), 601 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 789 transitions. [2021-11-19 14:01:43,282 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 789 transitions. Word has length 88 [2021-11-19 14:01:43,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:43,283 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 789 transitions. [2021-11-19 14:01:43,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:43,284 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 789 transitions. [2021-11-19 14:01:43,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 14:01:43,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:43,286 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] [2021-11-19 14:01:43,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 14:01:43,286 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:43,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:43,287 INFO L85 PathProgramCache]: Analyzing trace with hash 328508839, now seen corresponding path program 1 times [2021-11-19 14:01:43,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:43,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826815873] [2021-11-19 14:01:43,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:43,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:43,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:43,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826815873] [2021-11-19 14:01:43,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826815873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:43,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:43,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:01:43,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355031974] [2021-11-19 14:01:43,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:43,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:01:43,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:43,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:01:43,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:01:43,478 INFO L87 Difference]: Start difference. First operand 602 states and 789 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:45,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:45,108 INFO L93 Difference]: Finished difference Result 1181 states and 1553 transitions. [2021-11-19 14:01:45,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:01:45,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-19 14:01:45,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:45,113 INFO L225 Difference]: With dead ends: 1181 [2021-11-19 14:01:45,114 INFO L226 Difference]: Without dead ends: 1020 [2021-11-19 14:01:45,115 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 [2021-11-19 14:01:45,115 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 2804 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2804 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:45,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2804 Valid, 2460 Invalid, 2188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:01:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-11-19 14:01:45,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 602. [2021-11-19 14:01:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3586206896551725) internal successors, (788), 601 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:45,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 788 transitions. [2021-11-19 14:01:45,163 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 788 transitions. Word has length 89 [2021-11-19 14:01:45,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:45,164 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 788 transitions. [2021-11-19 14:01:45,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 788 transitions. [2021-11-19 14:01:45,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 14:01:45,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:45,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:45,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 14:01:45,167 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:45,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:45,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1669555108, now seen corresponding path program 1 times [2021-11-19 14:01:45,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:45,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840611312] [2021-11-19 14:01:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:45,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:45,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:45,308 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:45,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840611312] [2021-11-19 14:01:45,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840611312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:45,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:45,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:01:45,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314068894] [2021-11-19 14:01:45,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:45,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:01:45,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:45,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:01:45,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:01:45,311 INFO L87 Difference]: Start difference. First operand 602 states and 788 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:46,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:46,965 INFO L93 Difference]: Finished difference Result 1108 states and 1456 transitions. [2021-11-19 14:01:46,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:01:46,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-19 14:01:46,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:46,971 INFO L225 Difference]: With dead ends: 1108 [2021-11-19 14:01:46,971 INFO L226 Difference]: Without dead ends: 1011 [2021-11-19 14:01:46,972 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 [2021-11-19 14:01:46,973 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 2638 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2638 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:46,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2638 Valid, 2927 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:01:46,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-11-19 14:01:47,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 602. [2021-11-19 14:01:47,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.356896551724138) internal successors, (787), 601 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 787 transitions. [2021-11-19 14:01:47,022 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 787 transitions. Word has length 89 [2021-11-19 14:01:47,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:47,022 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 787 transitions. [2021-11-19 14:01:47,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 787 transitions. [2021-11-19 14:01:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 14:01:47,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:47,025 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] [2021-11-19 14:01:47,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 14:01:47,025 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:47,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash 231777635, now seen corresponding path program 1 times [2021-11-19 14:01:47,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:47,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618141534] [2021-11-19 14:01:47,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:47,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:47,174 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:47,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618141534] [2021-11-19 14:01:47,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618141534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:47,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:47,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 14:01:47,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223970066] [2021-11-19 14:01:47,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:47,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:01:47,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:47,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:01:47,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:01:47,177 INFO L87 Difference]: Start difference. First operand 602 states and 787 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:48,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:48,260 INFO L93 Difference]: Finished difference Result 1109 states and 1399 transitions. [2021-11-19 14:01:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:01:48,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-19 14:01:48,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:48,266 INFO L225 Difference]: With dead ends: 1109 [2021-11-19 14:01:48,266 INFO L226 Difference]: Without dead ends: 790 [2021-11-19 14:01:48,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:01:48,268 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 3364 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3364 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:48,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3364 Valid, 915 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:01:48,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-11-19 14:01:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 602. [2021-11-19 14:01:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3551724137931034) internal successors, (786), 601 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 786 transitions. [2021-11-19 14:01:48,331 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 786 transitions. Word has length 89 [2021-11-19 14:01:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:48,331 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 786 transitions. [2021-11-19 14:01:48,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:48,332 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 786 transitions. [2021-11-19 14:01:48,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:01:48,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:48,334 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] [2021-11-19 14:01:48,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 14:01:48,335 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:48,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1427714440, now seen corresponding path program 1 times [2021-11-19 14:01:48,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:48,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611963454] [2021-11-19 14:01:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:48,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:48,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:48,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611963454] [2021-11-19 14:01:48,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611963454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:48,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:48,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:01:48,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076246671] [2021-11-19 14:01:48,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:48,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:01:48,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:01:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:01:48,543 INFO L87 Difference]: Start difference. First operand 602 states and 786 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:50,158 INFO L93 Difference]: Finished difference Result 1080 states and 1407 transitions. [2021-11-19 14:01:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:01:50,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-19 14:01:50,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:50,164 INFO L225 Difference]: With dead ends: 1080 [2021-11-19 14:01:50,164 INFO L226 Difference]: Without dead ends: 1008 [2021-11-19 14:01:50,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:01:50,166 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 2533 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:50,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2533 Valid, 2689 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:01:50,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-19 14:01:50,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 602. [2021-11-19 14:01:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.353448275862069) internal successors, (785), 601 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 785 transitions. [2021-11-19 14:01:50,221 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 785 transitions. Word has length 91 [2021-11-19 14:01:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:50,221 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 785 transitions. [2021-11-19 14:01:50,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 785 transitions. [2021-11-19 14:01:50,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:01:50,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:50,224 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] [2021-11-19 14:01:50,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 14:01:50,225 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:50,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:50,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1221078273, now seen corresponding path program 1 times [2021-11-19 14:01:50,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:50,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508369663] [2021-11-19 14:01:50,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:50,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:50,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:50,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508369663] [2021-11-19 14:01:50,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508369663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:50,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:50,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:01:50,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386164235] [2021-11-19 14:01:50,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:50,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:01:50,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:50,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:01:50,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:01:50,403 INFO L87 Difference]: Start difference. First operand 602 states and 785 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:51,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:51,997 INFO L93 Difference]: Finished difference Result 1122 states and 1464 transitions. [2021-11-19 14:01:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:01:51,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-19 14:01:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:52,005 INFO L225 Difference]: With dead ends: 1122 [2021-11-19 14:01:52,006 INFO L226 Difference]: Without dead ends: 1011 [2021-11-19 14:01:52,007 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 [2021-11-19 14:01:52,008 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 1841 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 2398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:52,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1841 Valid, 2948 Invalid, 2398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:01:52,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-11-19 14:01:52,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 602. [2021-11-19 14:01:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3517241379310345) internal successors, (784), 601 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 784 transitions. [2021-11-19 14:01:52,068 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 784 transitions. Word has length 91 [2021-11-19 14:01:52,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:52,068 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 784 transitions. [2021-11-19 14:01:52,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:52,069 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 784 transitions. [2021-11-19 14:01:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:01:52,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:52,072 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] [2021-11-19 14:01:52,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 14:01:52,072 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:52,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:52,073 INFO L85 PathProgramCache]: Analyzing trace with hash -982216986, now seen corresponding path program 1 times [2021-11-19 14:01:52,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:52,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721021966] [2021-11-19 14:01:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:52,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:52,306 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:52,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721021966] [2021-11-19 14:01:52,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721021966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:52,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:52,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:01:52,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157609980] [2021-11-19 14:01:52,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:52,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:01:52,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:52,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:01:52,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:01:52,308 INFO L87 Difference]: Start difference. First operand 602 states and 784 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:54,225 INFO L93 Difference]: Finished difference Result 1277 states and 1662 transitions. [2021-11-19 14:01:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 14:01:54,225 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-19 14:01:54,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:54,230 INFO L225 Difference]: With dead ends: 1277 [2021-11-19 14:01:54,230 INFO L226 Difference]: Without dead ends: 1082 [2021-11-19 14:01:54,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-11-19 14:01:54,232 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 3084 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3084 SdHoareTripleChecker+Valid, 3290 SdHoareTripleChecker+Invalid, 2992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:54,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3084 Valid, 3290 Invalid, 2992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:01:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2021-11-19 14:01:54,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 602. [2021-11-19 14:01:54,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.35) internal successors, (783), 601 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 783 transitions. [2021-11-19 14:01:54,342 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 783 transitions. Word has length 91 [2021-11-19 14:01:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:54,343 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 783 transitions. [2021-11-19 14:01:54,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 783 transitions. [2021-11-19 14:01:54,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:01:54,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:54,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:54,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 14:01:54,346 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:54,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1988895487, now seen corresponding path program 1 times [2021-11-19 14:01:54,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:54,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333390125] [2021-11-19 14:01:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:54,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:54,565 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:54,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333390125] [2021-11-19 14:01:54,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333390125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:54,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:54,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:01:54,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700609899] [2021-11-19 14:01:54,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:54,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:01:54,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:54,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:01:54,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:01:54,567 INFO L87 Difference]: Start difference. First operand 602 states and 783 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:56,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:56,939 INFO L93 Difference]: Finished difference Result 1395 states and 1823 transitions. [2021-11-19 14:01:56,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:01:56,940 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-19 14:01:56,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:56,945 INFO L225 Difference]: With dead ends: 1395 [2021-11-19 14:01:56,945 INFO L226 Difference]: Without dead ends: 1323 [2021-11-19 14:01:56,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:01:56,947 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 5242 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 2560 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5242 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 2560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:56,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5242 Valid, 2646 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 2560 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:01:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2021-11-19 14:01:57,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 606. [2021-11-19 14:01:57,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 584 states have (on average 1.3476027397260273) internal successors, (787), 605 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:57,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 787 transitions. [2021-11-19 14:01:57,071 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 787 transitions. Word has length 91 [2021-11-19 14:01:57,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:57,072 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 787 transitions. [2021-11-19 14:01:57,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:57,072 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 787 transitions. [2021-11-19 14:01:57,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:01:57,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:57,079 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] [2021-11-19 14:01:57,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 14:01:57,079 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:57,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:57,080 INFO L85 PathProgramCache]: Analyzing trace with hash 646324256, now seen corresponding path program 1 times [2021-11-19 14:01:57,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:57,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786052656] [2021-11-19 14:01:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:57,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:57,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:57,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786052656] [2021-11-19 14:01:57,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786052656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:57,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:57,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:01:57,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309008019] [2021-11-19 14:01:57,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:57,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:01:57,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:57,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:01:57,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:01:57,252 INFO L87 Difference]: Start difference. First operand 606 states and 787 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:58,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:58,746 INFO L93 Difference]: Finished difference Result 1075 states and 1399 transitions. [2021-11-19 14:01:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:01:58,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-19 14:01:58,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:58,752 INFO L225 Difference]: With dead ends: 1075 [2021-11-19 14:01:58,752 INFO L226 Difference]: Without dead ends: 1008 [2021-11-19 14:01:58,753 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 [2021-11-19 14:01:58,754 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 2539 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:58,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2539 Valid, 2802 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:01:58,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-19 14:01:58,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 606. [2021-11-19 14:01:58,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 584 states have (on average 1.345890410958904) internal successors, (786), 605 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:58,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 786 transitions. [2021-11-19 14:01:58,825 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 786 transitions. Word has length 91 [2021-11-19 14:01:58,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:58,826 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 786 transitions. [2021-11-19 14:01:58,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:01:58,826 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 786 transitions. [2021-11-19 14:01:58,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:01:58,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:58,828 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] [2021-11-19 14:01:58,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 14:01:58,829 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:01:58,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:58,829 INFO L85 PathProgramCache]: Analyzing trace with hash 850721804, now seen corresponding path program 1 times [2021-11-19 14:01:58,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:01:58,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780659888] [2021-11-19 14:01:58,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:58,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:01:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:58,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:01:58,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780659888] [2021-11-19 14:01:58,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780659888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:58,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:58,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:01:58,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046980577] [2021-11-19 14:01:58,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:58,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:01:58,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:01:58,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:01:58,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:01:58,967 INFO L87 Difference]: Start difference. First operand 606 states and 786 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:00,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:00,338 INFO L93 Difference]: Finished difference Result 1080 states and 1403 transitions. [2021-11-19 14:02:00,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:02:00,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-19 14:02:00,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:00,342 INFO L225 Difference]: With dead ends: 1080 [2021-11-19 14:02:00,343 INFO L226 Difference]: Without dead ends: 1008 [2021-11-19 14:02:00,343 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 [2021-11-19 14:02:00,344 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 2511 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2511 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 2377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:00,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2511 Valid, 2820 Invalid, 2377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:02:00,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-19 14:02:00,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 606. [2021-11-19 14:02:00,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 584 states have (on average 1.3441780821917808) internal successors, (785), 605 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 785 transitions. [2021-11-19 14:02:00,438 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 785 transitions. Word has length 91 [2021-11-19 14:02:00,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:00,439 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 785 transitions. [2021-11-19 14:02:00,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 785 transitions. [2021-11-19 14:02:00,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:02:00,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:00,442 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] [2021-11-19 14:02:00,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 14:02:00,442 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:00,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:00,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2041192084, now seen corresponding path program 1 times [2021-11-19 14:02:00,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:00,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474844146] [2021-11-19 14:02:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:00,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:00,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:00,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474844146] [2021-11-19 14:02:00,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474844146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:00,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:00,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:02:00,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882651028] [2021-11-19 14:02:00,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:00,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:02:00,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:02:00,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:02:00,672 INFO L87 Difference]: Start difference. First operand 606 states and 785 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:03,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:03,631 INFO L93 Difference]: Finished difference Result 1504 states and 1968 transitions. [2021-11-19 14:02:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:02:03,632 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-19 14:02:03,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:03,637 INFO L225 Difference]: With dead ends: 1504 [2021-11-19 14:02:03,637 INFO L226 Difference]: Without dead ends: 1393 [2021-11-19 14:02:03,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:02:03,638 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 4790 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 3222 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4790 SdHoareTripleChecker+Valid, 3527 SdHoareTripleChecker+Invalid, 3687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 3222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:03,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4790 Valid, 3527 Invalid, 3687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 3222 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:02:03,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-11-19 14:02:03,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 610. [2021-11-19 14:02:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 588 states have (on average 1.3418367346938775) internal successors, (789), 609 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:03,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 789 transitions. [2021-11-19 14:02:03,736 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 789 transitions. Word has length 91 [2021-11-19 14:02:03,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:03,737 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 789 transitions. [2021-11-19 14:02:03,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:03,737 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 789 transitions. [2021-11-19 14:02:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-19 14:02:03,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:03,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:03,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 14:02:03,740 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:03,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:03,741 INFO L85 PathProgramCache]: Analyzing trace with hash 119251772, now seen corresponding path program 1 times [2021-11-19 14:02:03,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:03,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205031003] [2021-11-19 14:02:03,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:03,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:03,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:03,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205031003] [2021-11-19 14:02:03,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205031003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:03,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:03,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:03,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782153994] [2021-11-19 14:02:03,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:03,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:03,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:03,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:03,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:03,863 INFO L87 Difference]: Start difference. First operand 610 states and 789 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:05,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:05,335 INFO L93 Difference]: Finished difference Result 1126 states and 1465 transitions. [2021-11-19 14:02:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:05,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-19 14:02:05,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:05,340 INFO L225 Difference]: With dead ends: 1126 [2021-11-19 14:02:05,340 INFO L226 Difference]: Without dead ends: 1015 [2021-11-19 14:02:05,341 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 [2021-11-19 14:02:05,342 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1825 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:05,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 2757 Invalid, 2368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:02:05,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-11-19 14:02:05,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 606. [2021-11-19 14:02:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 584 states have (on average 1.3424657534246576) internal successors, (784), 605 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:05,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 784 transitions. [2021-11-19 14:02:05,438 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 784 transitions. Word has length 92 [2021-11-19 14:02:05,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:05,438 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 784 transitions. [2021-11-19 14:02:05,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:05,439 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 784 transitions. [2021-11-19 14:02:05,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-19 14:02:05,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:05,441 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] [2021-11-19 14:02:05,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 14:02:05,441 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:05,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1082142256, now seen corresponding path program 1 times [2021-11-19 14:02:05,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:05,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004352730] [2021-11-19 14:02:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:05,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:05,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:05,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004352730] [2021-11-19 14:02:05,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004352730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:05,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:05,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:05,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574370912] [2021-11-19 14:02:05,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:05,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:05,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:05,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:05,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:05,561 INFO L87 Difference]: Start difference. First operand 606 states and 784 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:06,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:06,914 INFO L93 Difference]: Finished difference Result 1080 states and 1400 transitions. [2021-11-19 14:02:06,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:06,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-19 14:02:06,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:06,920 INFO L225 Difference]: With dead ends: 1080 [2021-11-19 14:02:06,920 INFO L226 Difference]: Without dead ends: 1008 [2021-11-19 14:02:06,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:02:06,922 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 2817 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:06,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2817 Valid, 2505 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:02:06,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-19 14:02:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 602. [2021-11-19 14:02:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3431034482758621) internal successors, (779), 601 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 779 transitions. [2021-11-19 14:02:07,021 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 779 transitions. Word has length 92 [2021-11-19 14:02:07,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:07,022 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 779 transitions. [2021-11-19 14:02:07,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 779 transitions. [2021-11-19 14:02:07,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:07,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:07,025 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] [2021-11-19 14:02:07,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 14:02:07,025 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:07,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:07,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1474627327, now seen corresponding path program 1 times [2021-11-19 14:02:07,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:07,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350646608] [2021-11-19 14:02:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:07,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:07,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:07,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350646608] [2021-11-19 14:02:07,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350646608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:07,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:07,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:07,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623622290] [2021-11-19 14:02:07,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:07,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:07,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:07,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:07,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:07,156 INFO L87 Difference]: Start difference. First operand 602 states and 779 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:08,497 INFO L93 Difference]: Finished difference Result 1089 states and 1408 transitions. [2021-11-19 14:02:08,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:02:08,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-19 14:02:08,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:08,502 INFO L225 Difference]: With dead ends: 1089 [2021-11-19 14:02:08,503 INFO L226 Difference]: Without dead ends: 1008 [2021-11-19 14:02:08,503 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 [2021-11-19 14:02:08,504 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 2662 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2662 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:08,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2662 Valid, 2999 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:02:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-19 14:02:08,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 602. [2021-11-19 14:02:08,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3413793103448275) internal successors, (778), 601 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:08,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 778 transitions. [2021-11-19 14:02:08,603 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 778 transitions. Word has length 93 [2021-11-19 14:02:08,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:08,604 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 778 transitions. [2021-11-19 14:02:08,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:08,604 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 778 transitions. [2021-11-19 14:02:08,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:08,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:08,606 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] [2021-11-19 14:02:08,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 14:02:08,607 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:08,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:08,607 INFO L85 PathProgramCache]: Analyzing trace with hash -281811597, now seen corresponding path program 1 times [2021-11-19 14:02:08,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:08,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634694602] [2021-11-19 14:02:08,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:08,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:08,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:08,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634694602] [2021-11-19 14:02:08,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634694602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:08,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:08,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:08,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313616188] [2021-11-19 14:02:08,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:08,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:08,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:08,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:08,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:08,728 INFO L87 Difference]: Start difference. First operand 602 states and 778 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:10,090 INFO L93 Difference]: Finished difference Result 1051 states and 1353 transitions. [2021-11-19 14:02:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:10,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-19 14:02:10,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:10,094 INFO L225 Difference]: With dead ends: 1051 [2021-11-19 14:02:10,095 INFO L226 Difference]: Without dead ends: 992 [2021-11-19 14:02:10,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:02:10,096 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 2833 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2833 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:10,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2833 Valid, 2304 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:02:10,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-19 14:02:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 602. [2021-11-19 14:02:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.339655172413793) internal successors, (777), 601 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:10,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 777 transitions. [2021-11-19 14:02:10,191 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 777 transitions. Word has length 93 [2021-11-19 14:02:10,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:10,191 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 777 transitions. [2021-11-19 14:02:10,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 777 transitions. [2021-11-19 14:02:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:10,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:10,194 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] [2021-11-19 14:02:10,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 14:02:10,194 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:10,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:10,195 INFO L85 PathProgramCache]: Analyzing trace with hash -610424553, now seen corresponding path program 1 times [2021-11-19 14:02:10,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:10,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265145251] [2021-11-19 14:02:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:10,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:10,310 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:10,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265145251] [2021-11-19 14:02:10,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265145251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:10,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:10,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:10,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308048883] [2021-11-19 14:02:10,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:10,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:10,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:10,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:10,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:10,312 INFO L87 Difference]: Start difference. First operand 602 states and 777 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:11,698 INFO L93 Difference]: Finished difference Result 1137 states and 1468 transitions. [2021-11-19 14:02:11,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:02:11,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-19 14:02:11,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:11,702 INFO L225 Difference]: With dead ends: 1137 [2021-11-19 14:02:11,702 INFO L226 Difference]: Without dead ends: 1011 [2021-11-19 14:02:11,703 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 [2021-11-19 14:02:11,703 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 1823 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:11,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 3292 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2605 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:02:11,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-11-19 14:02:11,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 602. [2021-11-19 14:02:11,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3379310344827586) internal successors, (776), 601 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 776 transitions. [2021-11-19 14:02:11,839 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 776 transitions. Word has length 93 [2021-11-19 14:02:11,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:11,839 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 776 transitions. [2021-11-19 14:02:11,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:11,840 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 776 transitions. [2021-11-19 14:02:11,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:11,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:11,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:11,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 14:02:11,842 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:11,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:11,843 INFO L85 PathProgramCache]: Analyzing trace with hash 410318044, now seen corresponding path program 1 times [2021-11-19 14:02:11,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:11,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278710722] [2021-11-19 14:02:11,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:11,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:11,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:11,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278710722] [2021-11-19 14:02:11,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278710722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:11,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:11,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:11,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326370310] [2021-11-19 14:02:11,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:11,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:11,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:11,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:11,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:11,958 INFO L87 Difference]: Start difference. First operand 602 states and 776 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:13,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:13,294 INFO L93 Difference]: Finished difference Result 1051 states and 1350 transitions. [2021-11-19 14:02:13,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:13,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-19 14:02:13,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:13,300 INFO L225 Difference]: With dead ends: 1051 [2021-11-19 14:02:13,300 INFO L226 Difference]: Without dead ends: 992 [2021-11-19 14:02:13,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:02:13,302 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 2824 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2824 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:13,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2824 Valid, 2306 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:02:13,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-19 14:02:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 602. [2021-11-19 14:02:13,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 580 states have (on average 1.3362068965517242) internal successors, (775), 601 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 775 transitions. [2021-11-19 14:02:13,375 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 775 transitions. Word has length 93 [2021-11-19 14:02:13,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:13,376 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 775 transitions. [2021-11-19 14:02:13,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:13,376 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 775 transitions. [2021-11-19 14:02:13,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:13,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:13,378 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] [2021-11-19 14:02:13,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-19 14:02:13,379 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:13,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:13,379 INFO L85 PathProgramCache]: Analyzing trace with hash -603748374, now seen corresponding path program 1 times [2021-11-19 14:02:13,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:13,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872702988] [2021-11-19 14:02:13,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:13,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:13,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:13,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872702988] [2021-11-19 14:02:13,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872702988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:13,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:13,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:02:13,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20450275] [2021-11-19 14:02:13,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:13,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:02:13,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:13,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:02:13,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:02:13,581 INFO L87 Difference]: Start difference. First operand 602 states and 775 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) 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) [2021-11-19 14:02:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:16,117 INFO L93 Difference]: Finished difference Result 1412 states and 1826 transitions. [2021-11-19 14:02:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:02:16,118 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) 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 [2021-11-19 14:02:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:16,125 INFO L225 Difference]: With dead ends: 1412 [2021-11-19 14:02:16,125 INFO L226 Difference]: Without dead ends: 1331 [2021-11-19 14:02:16,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:02:16,127 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 4570 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 2822 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4570 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:16,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4570 Valid, 3071 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2822 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:02:16,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-11-19 14:02:16,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 606. [2021-11-19 14:02:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 584 states have (on average 1.3339041095890412) internal successors, (779), 605 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:16,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 779 transitions. [2021-11-19 14:02:16,205 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 779 transitions. Word has length 93 [2021-11-19 14:02:16,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:16,206 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 779 transitions. [2021-11-19 14:02:16,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) 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) [2021-11-19 14:02:16,206 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 779 transitions. [2021-11-19 14:02:16,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:16,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:16,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:16,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-19 14:02:16,209 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:16,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1361131299, now seen corresponding path program 1 times [2021-11-19 14:02:16,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:16,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585293789] [2021-11-19 14:02:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:16,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:16,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:16,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585293789] [2021-11-19 14:02:16,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585293789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:16,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:16,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:02:16,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40278587] [2021-11-19 14:02:16,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:16,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:02:16,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:16,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:02:16,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:02:16,403 INFO L87 Difference]: Start difference. First operand 606 states and 779 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) 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) [2021-11-19 14:02:18,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:18,871 INFO L93 Difference]: Finished difference Result 1332 states and 1720 transitions. [2021-11-19 14:02:18,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:02:18,871 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) 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 [2021-11-19 14:02:18,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:18,877 INFO L225 Difference]: With dead ends: 1332 [2021-11-19 14:02:18,877 INFO L226 Difference]: Without dead ends: 1273 [2021-11-19 14:02:18,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:02:18,879 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 4811 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4811 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 3330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:18,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4811 Valid, 2869 Invalid, 3330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 14:02:18,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-11-19 14:02:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 610. [2021-11-19 14:02:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 588 states have (on average 1.3316326530612246) internal successors, (783), 609 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 783 transitions. [2021-11-19 14:02:18,973 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 783 transitions. Word has length 93 [2021-11-19 14:02:18,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:18,974 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 783 transitions. [2021-11-19 14:02:18,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) 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) [2021-11-19 14:02:18,974 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 783 transitions. [2021-11-19 14:02:18,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:18,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:18,976 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] [2021-11-19 14:02:18,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-19 14:02:18,976 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:18,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:18,977 INFO L85 PathProgramCache]: Analyzing trace with hash 690949312, now seen corresponding path program 1 times [2021-11-19 14:02:18,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:18,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237662554] [2021-11-19 14:02:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:18,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:19,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:19,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237662554] [2021-11-19 14:02:19,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237662554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:19,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:19,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:19,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284405493] [2021-11-19 14:02:19,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:19,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:19,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:19,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:19,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:19,093 INFO L87 Difference]: Start difference. First operand 610 states and 783 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:20,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:20,450 INFO L93 Difference]: Finished difference Result 1051 states and 1349 transitions. [2021-11-19 14:02:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:20,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-19 14:02:20,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:20,456 INFO L225 Difference]: With dead ends: 1051 [2021-11-19 14:02:20,456 INFO L226 Difference]: Without dead ends: 996 [2021-11-19 14:02:20,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:02:20,457 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 2847 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2847 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:20,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2847 Valid, 2277 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:02:20,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-19 14:02:20,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 610. [2021-11-19 14:02:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 588 states have (on average 1.3299319727891157) internal successors, (782), 609 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:20,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 782 transitions. [2021-11-19 14:02:20,552 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 782 transitions. Word has length 93 [2021-11-19 14:02:20,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:20,552 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 782 transitions. [2021-11-19 14:02:20,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:20,552 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 782 transitions. [2021-11-19 14:02:20,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:20,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:20,554 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] [2021-11-19 14:02:20,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-19 14:02:20,555 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:20,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:20,555 INFO L85 PathProgramCache]: Analyzing trace with hash 235260732, now seen corresponding path program 1 times [2021-11-19 14:02:20,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:20,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538840015] [2021-11-19 14:02:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:20,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:20,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:20,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538840015] [2021-11-19 14:02:20,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538840015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:20,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:20,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:02:20,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584867638] [2021-11-19 14:02:20,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:20,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:02:20,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:20,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:02:20,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:02:20,750 INFO L87 Difference]: Start difference. First operand 610 states and 782 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) 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) [2021-11-19 14:02:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:23,294 INFO L93 Difference]: Finished difference Result 1332 states and 1718 transitions. [2021-11-19 14:02:23,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:02:23,295 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) 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 [2021-11-19 14:02:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:23,298 INFO L225 Difference]: With dead ends: 1332 [2021-11-19 14:02:23,298 INFO L226 Difference]: Without dead ends: 1273 [2021-11-19 14:02:23,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:02:23,300 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 4805 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 2940 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4805 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 3558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 2940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:23,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4805 Valid, 3097 Invalid, 3558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 2940 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:02:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-11-19 14:02:23,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 614. [2021-11-19 14:02:23,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 592 states have (on average 1.3277027027027026) internal successors, (786), 613 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 786 transitions. [2021-11-19 14:02:23,418 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 786 transitions. Word has length 93 [2021-11-19 14:02:23,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:23,418 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 786 transitions. [2021-11-19 14:02:23,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) 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) [2021-11-19 14:02:23,418 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 786 transitions. [2021-11-19 14:02:23,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:23,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:23,420 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] [2021-11-19 14:02:23,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-19 14:02:23,421 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:23,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:23,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1312261900, now seen corresponding path program 1 times [2021-11-19 14:02:23,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:23,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403215727] [2021-11-19 14:02:23,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:23,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:23,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:23,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403215727] [2021-11-19 14:02:23,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403215727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:23,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:23,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:23,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442280745] [2021-11-19 14:02:23,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:23,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:23,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:23,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:23,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:23,533 INFO L87 Difference]: Start difference. First operand 614 states and 786 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:24,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:24,903 INFO L93 Difference]: Finished difference Result 1051 states and 1347 transitions. [2021-11-19 14:02:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:24,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-19 14:02:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:24,905 INFO L225 Difference]: With dead ends: 1051 [2021-11-19 14:02:24,905 INFO L226 Difference]: Without dead ends: 996 [2021-11-19 14:02:24,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:02:24,906 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 2801 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2801 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 2128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:24,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2801 Valid, 2307 Invalid, 2128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:02:24,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-19 14:02:24,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 614. [2021-11-19 14:02:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 592 states have (on average 1.3260135135135136) internal successors, (785), 613 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:24,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 785 transitions. [2021-11-19 14:02:24,993 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 785 transitions. Word has length 93 [2021-11-19 14:02:24,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:24,993 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 785 transitions. [2021-11-19 14:02:24,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:24,993 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 785 transitions. [2021-11-19 14:02:24,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:24,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:24,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:24,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-19 14:02:24,995 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:24,996 INFO L85 PathProgramCache]: Analyzing trace with hash 297551301, now seen corresponding path program 1 times [2021-11-19 14:02:24,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:24,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909604513] [2021-11-19 14:02:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:24,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:25,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:25,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909604513] [2021-11-19 14:02:25,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909604513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:25,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:25,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:02:25,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592605131] [2021-11-19 14:02:25,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:25,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:02:25,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:25,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:02:25,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:02:25,187 INFO L87 Difference]: Start difference. First operand 614 states and 785 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) 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) [2021-11-19 14:02:27,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:27,627 INFO L93 Difference]: Finished difference Result 1325 states and 1711 transitions. [2021-11-19 14:02:27,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:02:27,627 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) 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 [2021-11-19 14:02:27,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:27,629 INFO L225 Difference]: With dead ends: 1325 [2021-11-19 14:02:27,630 INFO L226 Difference]: Without dead ends: 1270 [2021-11-19 14:02:27,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:02:27,631 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 4804 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4804 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:27,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4804 Valid, 2537 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:02:27,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-11-19 14:02:27,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 618. [2021-11-19 14:02:27,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 596 states have (on average 1.3238255033557047) internal successors, (789), 617 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 789 transitions. [2021-11-19 14:02:27,729 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 789 transitions. Word has length 93 [2021-11-19 14:02:27,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:27,729 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 789 transitions. [2021-11-19 14:02:27,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) 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) [2021-11-19 14:02:27,730 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 789 transitions. [2021-11-19 14:02:27,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:27,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:27,731 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] [2021-11-19 14:02:27,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-19 14:02:27,732 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:27,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:27,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1532412921, now seen corresponding path program 1 times [2021-11-19 14:02:27,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:27,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564838556] [2021-11-19 14:02:27,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:27,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:27,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:27,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564838556] [2021-11-19 14:02:27,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564838556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:27,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:27,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:02:27,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23545769] [2021-11-19 14:02:27,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:27,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:02:27,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:27,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:02:27,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:02:27,940 INFO L87 Difference]: Start difference. First operand 618 states and 789 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) 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) [2021-11-19 14:02:30,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:30,547 INFO L93 Difference]: Finished difference Result 1333 states and 1718 transitions. [2021-11-19 14:02:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:02:30,547 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) 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 [2021-11-19 14:02:30,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:30,549 INFO L225 Difference]: With dead ends: 1333 [2021-11-19 14:02:30,549 INFO L226 Difference]: Without dead ends: 1274 [2021-11-19 14:02:30,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:02:30,550 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 4874 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 2867 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4874 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 3500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 2867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:30,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4874 Valid, 3037 Invalid, 3500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 2867 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:02:30,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-11-19 14:02:30,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 622. [2021-11-19 14:02:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.3216666666666668) internal successors, (793), 621 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 793 transitions. [2021-11-19 14:02:30,653 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 793 transitions. Word has length 93 [2021-11-19 14:02:30,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:30,653 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 793 transitions. [2021-11-19 14:02:30,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) 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) [2021-11-19 14:02:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 793 transitions. [2021-11-19 14:02:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:30,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:30,654 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] [2021-11-19 14:02:30,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-19 14:02:30,654 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:30,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash -170860907, now seen corresponding path program 1 times [2021-11-19 14:02:30,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:30,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549327104] [2021-11-19 14:02:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:30,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:30,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:30,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549327104] [2021-11-19 14:02:30,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549327104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:30,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:30,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:30,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366501614] [2021-11-19 14:02:30,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:30,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:30,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:30,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:30,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:30,765 INFO L87 Difference]: Start difference. First operand 622 states and 793 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:32,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:32,200 INFO L93 Difference]: Finished difference Result 1051 states and 1344 transitions. [2021-11-19 14:02:32,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:32,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-19 14:02:32,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:32,202 INFO L225 Difference]: With dead ends: 1051 [2021-11-19 14:02:32,202 INFO L226 Difference]: Without dead ends: 996 [2021-11-19 14:02:32,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:02:32,204 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 2913 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:32,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2913 Valid, 2193 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:02:32,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-19 14:02:32,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 622. [2021-11-19 14:02:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.32) internal successors, (792), 621 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 792 transitions. [2021-11-19 14:02:32,302 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 792 transitions. Word has length 93 [2021-11-19 14:02:32,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:32,303 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 792 transitions. [2021-11-19 14:02:32,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 792 transitions. [2021-11-19 14:02:32,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:32,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:32,305 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] [2021-11-19 14:02:32,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-19 14:02:32,305 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:32,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1086119729, now seen corresponding path program 1 times [2021-11-19 14:02:32,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:32,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927806763] [2021-11-19 14:02:32,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:32,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:32,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:32,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927806763] [2021-11-19 14:02:32,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927806763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:32,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:32,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:02:32,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152651355] [2021-11-19 14:02:32,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:32,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:02:32,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:32,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:02:32,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:02:32,496 INFO L87 Difference]: Start difference. First operand 622 states and 792 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) 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) [2021-11-19 14:02:35,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:35,174 INFO L93 Difference]: Finished difference Result 1433 states and 1846 transitions. [2021-11-19 14:02:35,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:02:35,175 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) 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 [2021-11-19 14:02:35,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:35,177 INFO L225 Difference]: With dead ends: 1433 [2021-11-19 14:02:35,177 INFO L226 Difference]: Without dead ends: 1352 [2021-11-19 14:02:35,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:02:35,178 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 5057 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5057 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:35,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5057 Valid, 3170 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 14:02:35,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-11-19 14:02:35,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 626. [2021-11-19 14:02:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 604 states have (on average 1.3178807947019868) internal successors, (796), 625 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 796 transitions. [2021-11-19 14:02:35,287 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 796 transitions. Word has length 93 [2021-11-19 14:02:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:35,287 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 796 transitions. [2021-11-19 14:02:35,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) 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) [2021-11-19 14:02:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 796 transitions. [2021-11-19 14:02:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:02:35,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:35,288 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] [2021-11-19 14:02:35,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-19 14:02:35,289 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:35,289 INFO L85 PathProgramCache]: Analyzing trace with hash -960925632, now seen corresponding path program 1 times [2021-11-19 14:02:35,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:35,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855939205] [2021-11-19 14:02:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:35,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:35,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:35,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855939205] [2021-11-19 14:02:35,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855939205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:35,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:35,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:35,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817682649] [2021-11-19 14:02:35,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:35,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:35,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:35,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:35,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:35,404 INFO L87 Difference]: Start difference. First operand 626 states and 796 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:36,910 INFO L93 Difference]: Finished difference Result 1059 states and 1351 transitions. [2021-11-19 14:02:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:36,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2021-11-19 14:02:36,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:36,911 INFO L225 Difference]: With dead ends: 1059 [2021-11-19 14:02:36,912 INFO L226 Difference]: Without dead ends: 1000 [2021-11-19 14:02:36,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:02:36,913 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 2922 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2922 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:36,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2922 Valid, 2184 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:02:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-11-19 14:02:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 626. [2021-11-19 14:02:37,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 604 states have (on average 1.3162251655629138) internal successors, (795), 625 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 795 transitions. [2021-11-19 14:02:37,011 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 795 transitions. Word has length 93 [2021-11-19 14:02:37,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:37,011 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 795 transitions. [2021-11-19 14:02:37,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2021-11-19 14:02:37,011 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 795 transitions. [2021-11-19 14:02:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 14:02:37,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:37,013 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, 1] [2021-11-19 14:02:37,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-19 14:02:37,013 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:37,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:37,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2080629291, now seen corresponding path program 1 times [2021-11-19 14:02:37,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:37,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732466451] [2021-11-19 14:02:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:37,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:37,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:37,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732466451] [2021-11-19 14:02:37,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732466451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:37,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:37,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:37,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418535922] [2021-11-19 14:02:37,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:37,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:37,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:37,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:37,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:37,121 INFO L87 Difference]: Start difference. First operand 626 states and 795 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:38,459 INFO L93 Difference]: Finished difference Result 1059 states and 1349 transitions. [2021-11-19 14:02:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:38,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-19 14:02:38,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:38,461 INFO L225 Difference]: With dead ends: 1059 [2021-11-19 14:02:38,461 INFO L226 Difference]: Without dead ends: 1000 [2021-11-19 14:02:38,461 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 [2021-11-19 14:02:38,462 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 2852 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2852 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:38,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2852 Valid, 2255 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1977 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:02:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-11-19 14:02:38,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 622. [2021-11-19 14:02:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 600 states have (on average 1.3166666666666667) internal successors, (790), 621 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 790 transitions. [2021-11-19 14:02:38,566 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 790 transitions. Word has length 94 [2021-11-19 14:02:38,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:38,566 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 790 transitions. [2021-11-19 14:02:38,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:38,566 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 790 transitions. [2021-11-19 14:02:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 14:02:38,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:38,567 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, 1] [2021-11-19 14:02:38,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-19 14:02:38,568 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1711046329, now seen corresponding path program 1 times [2021-11-19 14:02:38,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:38,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998437055] [2021-11-19 14:02:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:38,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:38,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:38,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998437055] [2021-11-19 14:02:38,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998437055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:38,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:38,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:38,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051652920] [2021-11-19 14:02:38,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:38,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:38,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:38,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:38,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:38,681 INFO L87 Difference]: Start difference. First operand 622 states and 790 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:40,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:40,119 INFO L93 Difference]: Finished difference Result 1105 states and 1408 transitions. [2021-11-19 14:02:40,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:40,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-19 14:02:40,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:40,121 INFO L225 Difference]: With dead ends: 1105 [2021-11-19 14:02:40,121 INFO L226 Difference]: Without dead ends: 1024 [2021-11-19 14:02:40,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:02:40,122 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 2617 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:40,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2617 Valid, 2642 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:02:40,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-11-19 14:02:40,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 618. [2021-11-19 14:02:40,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 596 states have (on average 1.3171140939597314) internal successors, (785), 617 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 785 transitions. [2021-11-19 14:02:40,225 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 785 transitions. Word has length 94 [2021-11-19 14:02:40,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:40,225 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 785 transitions. [2021-11-19 14:02:40,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 785 transitions. [2021-11-19 14:02:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 14:02:40,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:40,227 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, 1] [2021-11-19 14:02:40,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-19 14:02:40,227 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:40,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1386870711, now seen corresponding path program 1 times [2021-11-19 14:02:40,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:40,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829787005] [2021-11-19 14:02:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:40,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:40,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:40,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829787005] [2021-11-19 14:02:40,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829787005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:40,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:40,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:40,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123566327] [2021-11-19 14:02:40,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:40,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:40,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:40,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:40,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:40,345 INFO L87 Difference]: Start difference. First operand 618 states and 785 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:41,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:41,762 INFO L93 Difference]: Finished difference Result 1055 states and 1343 transitions. [2021-11-19 14:02:41,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:41,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-19 14:02:41,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:41,764 INFO L225 Difference]: With dead ends: 1055 [2021-11-19 14:02:41,764 INFO L226 Difference]: Without dead ends: 996 [2021-11-19 14:02:41,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:02:41,766 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 2730 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:41,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2730 Valid, 2387 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2057 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:02:41,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-19 14:02:41,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 614. [2021-11-19 14:02:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 592 states have (on average 1.3175675675675675) internal successors, (780), 613 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:41,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 780 transitions. [2021-11-19 14:02:41,867 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 780 transitions. Word has length 94 [2021-11-19 14:02:41,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:41,868 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 780 transitions. [2021-11-19 14:02:41,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:41,868 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 780 transitions. [2021-11-19 14:02:41,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 14:02:41,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:41,869 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, 1] [2021-11-19 14:02:41,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-19 14:02:41,870 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:41,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:41,870 INFO L85 PathProgramCache]: Analyzing trace with hash -753799877, now seen corresponding path program 1 times [2021-11-19 14:02:41,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:41,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301835223] [2021-11-19 14:02:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:41,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:41,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:41,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301835223] [2021-11-19 14:02:41,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301835223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:41,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:41,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:41,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366350892] [2021-11-19 14:02:41,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:41,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:41,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:41,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:41,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:41,978 INFO L87 Difference]: Start difference. First operand 614 states and 780 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:43,480 INFO L93 Difference]: Finished difference Result 1051 states and 1339 transitions. [2021-11-19 14:02:43,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:43,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-19 14:02:43,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:43,482 INFO L225 Difference]: With dead ends: 1051 [2021-11-19 14:02:43,482 INFO L226 Difference]: Without dead ends: 996 [2021-11-19 14:02:43,482 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 [2021-11-19 14:02:43,483 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 2722 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:43,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2722 Valid, 2405 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:02:43,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-19 14:02:43,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 610. [2021-11-19 14:02:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 588 states have (on average 1.3180272108843538) internal successors, (775), 609 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 775 transitions. [2021-11-19 14:02:43,581 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 775 transitions. Word has length 94 [2021-11-19 14:02:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:43,581 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 775 transitions. [2021-11-19 14:02:43,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 775 transitions. [2021-11-19 14:02:43,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 14:02:43,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:43,583 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, 1] [2021-11-19 14:02:43,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-19 14:02:43,583 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:43,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash 998669502, now seen corresponding path program 1 times [2021-11-19 14:02:43,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:43,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862463931] [2021-11-19 14:02:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:43,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:43,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:43,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862463931] [2021-11-19 14:02:43,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862463931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:43,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:43,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 14:02:43,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584020877] [2021-11-19 14:02:43,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:43,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:02:43,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:43,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:02:43,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:02:43,868 INFO L87 Difference]: Start difference. First operand 610 states and 775 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:45,074 INFO L93 Difference]: Finished difference Result 1288 states and 1654 transitions. [2021-11-19 14:02:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:02:45,075 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-19 14:02:45,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:45,077 INFO L225 Difference]: With dead ends: 1288 [2021-11-19 14:02:45,078 INFO L226 Difference]: Without dead ends: 1148 [2021-11-19 14:02:45,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:02:45,079 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 2484 mSDsluCounter, 5568 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2484 SdHoareTripleChecker+Valid, 6695 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:45,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2484 Valid, 6695 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:02:45,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2021-11-19 14:02:45,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 517. [2021-11-19 14:02:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 496 states have (on average 1.3024193548387097) internal successors, (646), 516 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 646 transitions. [2021-11-19 14:02:45,179 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 646 transitions. Word has length 94 [2021-11-19 14:02:45,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:45,179 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 646 transitions. [2021-11-19 14:02:45,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:45,179 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 646 transitions. [2021-11-19 14:02:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 14:02:45,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:45,180 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, 1] [2021-11-19 14:02:45,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-19 14:02:45,180 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:45,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:45,181 INFO L85 PathProgramCache]: Analyzing trace with hash 350887970, now seen corresponding path program 1 times [2021-11-19 14:02:45,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:45,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600818895] [2021-11-19 14:02:45,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:45,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:45,281 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:45,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600818895] [2021-11-19 14:02:45,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600818895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:45,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:45,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:45,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291754399] [2021-11-19 14:02:45,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:45,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:45,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:45,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:45,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:45,283 INFO L87 Difference]: Start difference. First operand 517 states and 646 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:46,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:46,442 INFO L93 Difference]: Finished difference Result 915 states and 1151 transitions. [2021-11-19 14:02:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:46,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-19 14:02:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:46,444 INFO L225 Difference]: With dead ends: 915 [2021-11-19 14:02:46,444 INFO L226 Difference]: Without dead ends: 856 [2021-11-19 14:02:46,445 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 [2021-11-19 14:02:46,445 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 1549 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:46,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 2042 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:02:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-11-19 14:02:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 513. [2021-11-19 14:02:46,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 492 states have (on average 1.3028455284552845) internal successors, (641), 512 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 641 transitions. [2021-11-19 14:02:46,551 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 641 transitions. Word has length 94 [2021-11-19 14:02:46,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:46,551 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 641 transitions. [2021-11-19 14:02:46,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 641 transitions. [2021-11-19 14:02:46,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 14:02:46,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:46,553 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, 1] [2021-11-19 14:02:46,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-19 14:02:46,553 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:46,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1902489423, now seen corresponding path program 1 times [2021-11-19 14:02:46,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:46,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614139531] [2021-11-19 14:02:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:46,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:46,654 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:46,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614139531] [2021-11-19 14:02:46,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614139531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:46,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:46,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:46,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195528586] [2021-11-19 14:02:46,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:46,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:46,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:46,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:46,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:46,656 INFO L87 Difference]: Start difference. First operand 513 states and 641 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:47,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:47,956 INFO L93 Difference]: Finished difference Result 945 states and 1192 transitions. [2021-11-19 14:02:47,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:47,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-19 14:02:47,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:47,957 INFO L225 Difference]: With dead ends: 945 [2021-11-19 14:02:47,958 INFO L226 Difference]: Without dead ends: 864 [2021-11-19 14:02:47,958 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 [2021-11-19 14:02:47,959 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 2085 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 2346 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:47,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2085 Valid, 2346 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:02:47,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-11-19 14:02:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 509. [2021-11-19 14:02:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 488 states have (on average 1.3032786885245902) internal successors, (636), 508 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 636 transitions. [2021-11-19 14:02:48,062 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 636 transitions. Word has length 94 [2021-11-19 14:02:48,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:48,062 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 636 transitions. [2021-11-19 14:02:48,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:48,062 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 636 transitions. [2021-11-19 14:02:48,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:02:48,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:48,063 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, 1, 1] [2021-11-19 14:02:48,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-19 14:02:48,064 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:48,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:48,064 INFO L85 PathProgramCache]: Analyzing trace with hash 296209564, now seen corresponding path program 1 times [2021-11-19 14:02:48,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:48,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078911007] [2021-11-19 14:02:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:48,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:48,165 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:48,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078911007] [2021-11-19 14:02:48,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078911007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:48,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:48,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:48,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226720996] [2021-11-19 14:02:48,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:48,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:48,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:48,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:48,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:48,167 INFO L87 Difference]: Start difference. First operand 509 states and 636 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:49,314 INFO L93 Difference]: Finished difference Result 916 states and 1149 transitions. [2021-11-19 14:02:49,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:49,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:02:49,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:49,316 INFO L225 Difference]: With dead ends: 916 [2021-11-19 14:02:49,316 INFO L226 Difference]: Without dead ends: 852 [2021-11-19 14:02:49,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:02:49,317 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 2376 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2376 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:49,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2376 Valid, 2048 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:02:49,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-11-19 14:02:49,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 509. [2021-11-19 14:02:49,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 488 states have (on average 1.3012295081967213) internal successors, (635), 508 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:49,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 635 transitions. [2021-11-19 14:02:49,462 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 635 transitions. Word has length 95 [2021-11-19 14:02:49,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:49,462 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 635 transitions. [2021-11-19 14:02:49,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:49,463 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 635 transitions. [2021-11-19 14:02:49,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:02:49,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:49,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:49,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-19 14:02:49,464 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:49,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1335545213, now seen corresponding path program 1 times [2021-11-19 14:02:49,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:49,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662280401] [2021-11-19 14:02:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:49,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:49,561 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:49,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662280401] [2021-11-19 14:02:49,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662280401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:49,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:49,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:49,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228545125] [2021-11-19 14:02:49,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:49,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:49,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:49,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:49,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:49,563 INFO L87 Difference]: Start difference. First operand 509 states and 635 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:50,696 INFO L93 Difference]: Finished difference Result 880 states and 1094 transitions. [2021-11-19 14:02:50,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:50,696 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:02:50,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:50,698 INFO L225 Difference]: With dead ends: 880 [2021-11-19 14:02:50,698 INFO L226 Difference]: Without dead ends: 828 [2021-11-19 14:02:50,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:02:50,699 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 2308 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:50,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2308 Valid, 1847 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:02:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-11-19 14:02:50,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 509. [2021-11-19 14:02:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 488 states have (on average 1.2991803278688525) internal successors, (634), 508 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 634 transitions. [2021-11-19 14:02:50,829 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 634 transitions. Word has length 95 [2021-11-19 14:02:50,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:50,829 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 634 transitions. [2021-11-19 14:02:50,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:50,829 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 634 transitions. [2021-11-19 14:02:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:02:50,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:50,830 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, 1, 1] [2021-11-19 14:02:50,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-19 14:02:50,831 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:50,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:50,831 INFO L85 PathProgramCache]: Analyzing trace with hash -186851275, now seen corresponding path program 1 times [2021-11-19 14:02:50,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:50,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268406087] [2021-11-19 14:02:50,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:50,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:51,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:51,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268406087] [2021-11-19 14:02:51,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268406087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:51,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:51,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:02:51,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334407453] [2021-11-19 14:02:51,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:51,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:02:51,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:51,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:02:51,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:02:51,015 INFO L87 Difference]: Start difference. First operand 509 states and 634 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:53,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:53,458 INFO L93 Difference]: Finished difference Result 1274 states and 1615 transitions. [2021-11-19 14:02:53,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:02:53,459 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:02:53,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:53,461 INFO L225 Difference]: With dead ends: 1274 [2021-11-19 14:02:53,461 INFO L226 Difference]: Without dead ends: 1187 [2021-11-19 14:02:53,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:02:53,462 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 3968 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3968 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:53,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3968 Valid, 2607 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:02:53,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-11-19 14:02:53,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 513. [2021-11-19 14:02:53,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 492 states have (on average 1.2967479674796747) internal successors, (638), 512 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 638 transitions. [2021-11-19 14:02:53,562 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 638 transitions. Word has length 95 [2021-11-19 14:02:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:53,563 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 638 transitions. [2021-11-19 14:02:53,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:53,563 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 638 transitions. [2021-11-19 14:02:53,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:02:53,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:53,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:53,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-19 14:02:53,565 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:53,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:53,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1026660038, now seen corresponding path program 1 times [2021-11-19 14:02:53,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:53,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462956890] [2021-11-19 14:02:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:53,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:53,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:53,745 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:53,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462956890] [2021-11-19 14:02:53,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462956890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:53,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:53,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:02:53,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533179101] [2021-11-19 14:02:53,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:53,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:02:53,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:53,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:02:53,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:02:53,747 INFO L87 Difference]: Start difference. First operand 513 states and 638 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:55,961 INFO L93 Difference]: Finished difference Result 1196 states and 1514 transitions. [2021-11-19 14:02:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:02:55,962 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:02:55,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:55,964 INFO L225 Difference]: With dead ends: 1196 [2021-11-19 14:02:55,964 INFO L226 Difference]: Without dead ends: 1132 [2021-11-19 14:02:55,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:02:55,966 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 4406 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4406 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:55,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4406 Valid, 2243 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:02:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-11-19 14:02:56,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 517. [2021-11-19 14:02:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 496 states have (on average 1.2943548387096775) internal successors, (642), 516 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 642 transitions. [2021-11-19 14:02:56,132 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 642 transitions. Word has length 95 [2021-11-19 14:02:56,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:56,134 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 642 transitions. [2021-11-19 14:02:56,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:56,134 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 642 transitions. [2021-11-19 14:02:56,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:02:56,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:56,135 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, 1, 1] [2021-11-19 14:02:56,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-19 14:02:56,136 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash -605094739, now seen corresponding path program 1 times [2021-11-19 14:02:56,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:56,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052939283] [2021-11-19 14:02:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:56,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:56,238 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:56,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052939283] [2021-11-19 14:02:56,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052939283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:56,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:56,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:02:56,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961193636] [2021-11-19 14:02:56,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:56,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:56,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:56,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:56,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:02:56,240 INFO L87 Difference]: Start difference. First operand 517 states and 642 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:57,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:57,576 INFO L93 Difference]: Finished difference Result 888 states and 1101 transitions. [2021-11-19 14:02:57,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:02:57,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:02:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:57,579 INFO L225 Difference]: With dead ends: 888 [2021-11-19 14:02:57,579 INFO L226 Difference]: Without dead ends: 836 [2021-11-19 14:02:57,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:02:57,580 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 2226 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:57,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2226 Valid, 1905 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:02:57,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-11-19 14:02:57,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 517. [2021-11-19 14:02:57,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 496 states have (on average 1.2923387096774193) internal successors, (641), 516 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 641 transitions. [2021-11-19 14:02:57,744 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 641 transitions. Word has length 95 [2021-11-19 14:02:57,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:57,744 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 641 transitions. [2021-11-19 14:02:57,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:02:57,744 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 641 transitions. [2021-11-19 14:02:57,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:02:57,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:57,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:57,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-19 14:02:57,746 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:02:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1892803208, now seen corresponding path program 1 times [2021-11-19 14:02:57,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:02:57,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690645865] [2021-11-19 14:02:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:57,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:02:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:57,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:57,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690645865] [2021-11-19 14:02:57,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690645865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:57,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:57,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:02:57,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70222156] [2021-11-19 14:02:57,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:57,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:02:57,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:57,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:02:57,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:02:57,932 INFO L87 Difference]: Start difference. First operand 517 states and 641 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:00,512 INFO L93 Difference]: Finished difference Result 1128 states and 1417 transitions. [2021-11-19 14:03:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:03:00,513 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:03:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:00,519 INFO L225 Difference]: With dead ends: 1128 [2021-11-19 14:03:00,519 INFO L226 Difference]: Without dead ends: 1076 [2021-11-19 14:03:00,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:03:00,521 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 3971 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3971 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:00,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3971 Valid, 2289 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:03:00,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2021-11-19 14:03:00,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 521. [2021-11-19 14:03:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 500 states have (on average 1.29) internal successors, (645), 520 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 645 transitions. [2021-11-19 14:03:00,720 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 645 transitions. Word has length 95 [2021-11-19 14:03:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:00,721 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 645 transitions. [2021-11-19 14:03:00,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 645 transitions. [2021-11-19 14:03:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:03:00,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:00,722 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, 1, 1] [2021-11-19 14:03:00,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-19 14:03:00,722 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:00,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:00,723 INFO L85 PathProgramCache]: Analyzing trace with hash -174985950, now seen corresponding path program 1 times [2021-11-19 14:03:00,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:00,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865715564] [2021-11-19 14:03:00,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:00,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:00,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:00,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865715564] [2021-11-19 14:03:00,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865715564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:00,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:00,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:00,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126379978] [2021-11-19 14:03:00,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:00,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:00,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:00,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:00,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:00,825 INFO L87 Difference]: Start difference. First operand 521 states and 645 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:02,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:02,032 INFO L93 Difference]: Finished difference Result 885 states and 1096 transitions. [2021-11-19 14:03:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:03:02,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:03:02,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:02,033 INFO L225 Difference]: With dead ends: 885 [2021-11-19 14:03:02,034 INFO L226 Difference]: Without dead ends: 836 [2021-11-19 14:03:02,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:03:02,035 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 2319 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:02,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2319 Valid, 1807 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:03:02,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-11-19 14:03:02,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 521. [2021-11-19 14:03:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 500 states have (on average 1.288) internal successors, (644), 520 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 644 transitions. [2021-11-19 14:03:02,152 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 644 transitions. Word has length 95 [2021-11-19 14:03:02,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:02,152 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 644 transitions. [2021-11-19 14:03:02,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:02,153 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 644 transitions. [2021-11-19 14:03:02,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:03:02,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:02,153 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, 1, 1] [2021-11-19 14:03:02,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-19 14:03:02,154 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:02,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:02,154 INFO L85 PathProgramCache]: Analyzing trace with hash 751271791, now seen corresponding path program 1 times [2021-11-19 14:03:02,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:02,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273075110] [2021-11-19 14:03:02,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:02,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:02,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:02,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273075110] [2021-11-19 14:03:02,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273075110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:02,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:02,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:03:02,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368279103] [2021-11-19 14:03:02,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:02,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:03:02,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:02,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:03:02,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:03:02,332 INFO L87 Difference]: Start difference. First operand 521 states and 644 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:04,784 INFO L93 Difference]: Finished difference Result 1153 states and 1450 transitions. [2021-11-19 14:03:04,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:03:04,784 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:03:04,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:04,785 INFO L225 Difference]: With dead ends: 1153 [2021-11-19 14:03:04,785 INFO L226 Difference]: Without dead ends: 1136 [2021-11-19 14:03:04,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:03:04,786 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 3999 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3999 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:04,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3999 Valid, 2293 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:03:04,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-11-19 14:03:04,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 525. [2021-11-19 14:03:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 504 states have (on average 1.2857142857142858) internal successors, (648), 524 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 648 transitions. [2021-11-19 14:03:04,906 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 648 transitions. Word has length 95 [2021-11-19 14:03:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:04,907 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 648 transitions. [2021-11-19 14:03:04,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:04,907 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 648 transitions. [2021-11-19 14:03:04,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:03:04,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:04,908 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, 1, 1] [2021-11-19 14:03:04,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-19 14:03:04,908 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:04,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:04,908 INFO L85 PathProgramCache]: Analyzing trace with hash -880482986, now seen corresponding path program 1 times [2021-11-19 14:03:04,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:04,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464320768] [2021-11-19 14:03:04,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:04,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:05,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:05,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464320768] [2021-11-19 14:03:05,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464320768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:05,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:05,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:05,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556266482] [2021-11-19 14:03:05,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:05,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:05,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:05,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:05,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:05,004 INFO L87 Difference]: Start difference. First operand 525 states and 648 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:06,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:06,305 INFO L93 Difference]: Finished difference Result 845 states and 1039 transitions. [2021-11-19 14:03:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:03:06,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:03:06,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:06,306 INFO L225 Difference]: With dead ends: 845 [2021-11-19 14:03:06,306 INFO L226 Difference]: Without dead ends: 840 [2021-11-19 14:03:06,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:03:06,307 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 2308 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:06,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2308 Valid, 1832 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:03:06,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-19 14:03:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 525. [2021-11-19 14:03:06,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 504 states have (on average 1.2837301587301588) internal successors, (647), 524 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 647 transitions. [2021-11-19 14:03:06,440 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 647 transitions. Word has length 95 [2021-11-19 14:03:06,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:06,440 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 647 transitions. [2021-11-19 14:03:06,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:06,441 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 647 transitions. [2021-11-19 14:03:06,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:03:06,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:06,441 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, 1, 1] [2021-11-19 14:03:06,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-19 14:03:06,442 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:06,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1948026529, now seen corresponding path program 1 times [2021-11-19 14:03:06,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:06,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468940068] [2021-11-19 14:03:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:06,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:06,611 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:06,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468940068] [2021-11-19 14:03:06,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468940068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:06,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:06,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:03:06,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809158831] [2021-11-19 14:03:06,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:06,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:03:06,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:06,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:03:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:03:06,612 INFO L87 Difference]: Start difference. First operand 525 states and 647 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:08,989 INFO L93 Difference]: Finished difference Result 1085 states and 1354 transitions. [2021-11-19 14:03:08,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:03:08,989 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:03:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:08,990 INFO L225 Difference]: With dead ends: 1085 [2021-11-19 14:03:08,990 INFO L226 Difference]: Without dead ends: 1080 [2021-11-19 14:03:08,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:03:08,991 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 3931 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3931 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:08,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3931 Valid, 2403 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:03:08,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2021-11-19 14:03:09,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 529. [2021-11-19 14:03:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 508 states have (on average 1.281496062992126) internal successors, (651), 528 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 651 transitions. [2021-11-19 14:03:09,115 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 651 transitions. Word has length 95 [2021-11-19 14:03:09,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:09,116 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 651 transitions. [2021-11-19 14:03:09,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:09,116 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 651 transitions. [2021-11-19 14:03:09,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:03:09,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:09,117 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, 1, 1] [2021-11-19 14:03:09,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-19 14:03:09,117 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:09,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:09,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1836058637, now seen corresponding path program 1 times [2021-11-19 14:03:09,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:09,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762813438] [2021-11-19 14:03:09,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:09,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:09,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:09,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762813438] [2021-11-19 14:03:09,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762813438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:09,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:09,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:09,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57382102] [2021-11-19 14:03:09,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:09,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:09,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:09,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:09,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:09,214 INFO L87 Difference]: Start difference. First operand 529 states and 651 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:10,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:10,713 INFO L93 Difference]: Finished difference Result 889 states and 1097 transitions. [2021-11-19 14:03:10,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:03:10,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:03:10,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:10,714 INFO L225 Difference]: With dead ends: 889 [2021-11-19 14:03:10,714 INFO L226 Difference]: Without dead ends: 840 [2021-11-19 14:03:10,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:03:10,715 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 2320 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:10,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2320 Valid, 1799 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:03:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-19 14:03:10,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 529. [2021-11-19 14:03:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 508 states have (on average 1.279527559055118) internal successors, (650), 528 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:10,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 650 transitions. [2021-11-19 14:03:10,841 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 650 transitions. Word has length 95 [2021-11-19 14:03:10,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:10,841 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 650 transitions. [2021-11-19 14:03:10,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 650 transitions. [2021-11-19 14:03:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:03:10,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:10,843 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, 1, 1] [2021-11-19 14:03:10,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-19 14:03:10,843 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:10,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:10,844 INFO L85 PathProgramCache]: Analyzing trace with hash 851489864, now seen corresponding path program 1 times [2021-11-19 14:03:10,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:10,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802242357] [2021-11-19 14:03:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:10,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:11,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:11,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802242357] [2021-11-19 14:03:11,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802242357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:11,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:11,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:03:11,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409198176] [2021-11-19 14:03:11,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:11,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:03:11,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:11,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:03:11,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:03:11,020 INFO L87 Difference]: Start difference. First operand 529 states and 650 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:13,687 INFO L93 Difference]: Finished difference Result 1085 states and 1352 transitions. [2021-11-19 14:03:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:03:13,688 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:03:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:13,689 INFO L225 Difference]: With dead ends: 1085 [2021-11-19 14:03:13,689 INFO L226 Difference]: Without dead ends: 1080 [2021-11-19 14:03:13,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:03:13,691 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 3938 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 2174 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3938 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 2174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:13,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3938 Valid, 2391 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 2174 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:03:13,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2021-11-19 14:03:13,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 533. [2021-11-19 14:03:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 512 states have (on average 1.27734375) internal successors, (654), 532 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 654 transitions. [2021-11-19 14:03:13,820 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 654 transitions. Word has length 95 [2021-11-19 14:03:13,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:13,820 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 654 transitions. [2021-11-19 14:03:13,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 654 transitions. [2021-11-19 14:03:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:03:13,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:13,822 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, 1, 1] [2021-11-19 14:03:13,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-19 14:03:13,822 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:13,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:13,822 INFO L85 PathProgramCache]: Analyzing trace with hash 740784075, now seen corresponding path program 1 times [2021-11-19 14:03:13,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:13,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883853784] [2021-11-19 14:03:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:13,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:13,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:13,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883853784] [2021-11-19 14:03:13,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883853784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:13,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:13,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:13,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307177077] [2021-11-19 14:03:13,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:13,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:13,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:13,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:13,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:13,939 INFO L87 Difference]: Start difference. First operand 533 states and 654 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:15,329 INFO L93 Difference]: Finished difference Result 889 states and 1095 transitions. [2021-11-19 14:03:15,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:03:15,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:03:15,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:15,330 INFO L225 Difference]: With dead ends: 889 [2021-11-19 14:03:15,330 INFO L226 Difference]: Without dead ends: 840 [2021-11-19 14:03:15,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:03:15,331 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 2238 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:15,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2238 Valid, 1861 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1580 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:03:15,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-19 14:03:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 533. [2021-11-19 14:03:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 512 states have (on average 1.275390625) internal successors, (653), 532 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 653 transitions. [2021-11-19 14:03:15,462 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 653 transitions. Word has length 95 [2021-11-19 14:03:15,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:15,462 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 653 transitions. [2021-11-19 14:03:15,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:15,463 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 653 transitions. [2021-11-19 14:03:15,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:03:15,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:15,464 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, 1, 1] [2021-11-19 14:03:15,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-19 14:03:15,464 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:15,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:15,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1797536421, now seen corresponding path program 1 times [2021-11-19 14:03:15,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:15,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322001786] [2021-11-19 14:03:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:15,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:15,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:15,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322001786] [2021-11-19 14:03:15,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322001786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:15,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:15,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:03:15,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855089731] [2021-11-19 14:03:15,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:15,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:03:15,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:15,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:03:15,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:03:15,640 INFO L87 Difference]: Start difference. First operand 533 states and 653 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:18,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:18,140 INFO L93 Difference]: Finished difference Result 1132 states and 1417 transitions. [2021-11-19 14:03:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:03:18,141 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:03:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:18,142 INFO L225 Difference]: With dead ends: 1132 [2021-11-19 14:03:18,142 INFO L226 Difference]: Without dead ends: 1083 [2021-11-19 14:03:18,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:03:18,143 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 3840 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3840 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 2451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:18,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3840 Valid, 1981 Invalid, 2451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:03:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2021-11-19 14:03:18,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 537. [2021-11-19 14:03:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 516 states have (on average 1.2732558139534884) internal successors, (657), 536 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:18,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 657 transitions. [2021-11-19 14:03:18,273 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 657 transitions. Word has length 95 [2021-11-19 14:03:18,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:18,273 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 657 transitions. [2021-11-19 14:03:18,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:18,273 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 657 transitions. [2021-11-19 14:03:18,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:03:18,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:18,274 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, 1, 1] [2021-11-19 14:03:18,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-19 14:03:18,274 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:18,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:18,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1916605268, now seen corresponding path program 1 times [2021-11-19 14:03:18,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:18,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932644447] [2021-11-19 14:03:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:18,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:18,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:18,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932644447] [2021-11-19 14:03:18,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932644447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:18,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:18,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:03:18,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657830296] [2021-11-19 14:03:18,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:18,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:03:18,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:03:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:03:18,443 INFO L87 Difference]: Start difference. First operand 537 states and 657 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:20,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:20,957 INFO L93 Difference]: Finished difference Result 1132 states and 1413 transitions. [2021-11-19 14:03:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:03:20,957 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:03:20,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:20,959 INFO L225 Difference]: With dead ends: 1132 [2021-11-19 14:03:20,959 INFO L226 Difference]: Without dead ends: 1080 [2021-11-19 14:03:20,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:03:20,960 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 3954 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3954 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:20,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3954 Valid, 2377 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:03:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2021-11-19 14:03:21,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 541. [2021-11-19 14:03:21,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 520 states have (on average 1.271153846153846) internal successors, (661), 540 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:21,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 661 transitions. [2021-11-19 14:03:21,100 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 661 transitions. Word has length 95 [2021-11-19 14:03:21,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:21,100 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 661 transitions. [2021-11-19 14:03:21,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:21,100 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 661 transitions. [2021-11-19 14:03:21,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:03:21,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:21,101 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, 1, 1] [2021-11-19 14:03:21,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-19 14:03:21,101 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:21,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:21,102 INFO L85 PathProgramCache]: Analyzing trace with hash -249249413, now seen corresponding path program 1 times [2021-11-19 14:03:21,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:21,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429390817] [2021-11-19 14:03:21,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:21,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:21,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:21,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429390817] [2021-11-19 14:03:21,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429390817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:21,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:21,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:21,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476900052] [2021-11-19 14:03:21,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:21,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:21,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:21,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:21,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:21,194 INFO L87 Difference]: Start difference. First operand 541 states and 661 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:22,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:22,493 INFO L93 Difference]: Finished difference Result 889 states and 1092 transitions. [2021-11-19 14:03:22,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:03:22,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:03:22,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:22,494 INFO L225 Difference]: With dead ends: 889 [2021-11-19 14:03:22,495 INFO L226 Difference]: Without dead ends: 840 [2021-11-19 14:03:22,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:03:22,495 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 2250 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2250 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:22,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2250 Valid, 1837 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:03:22,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-19 14:03:22,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 541. [2021-11-19 14:03:22,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 520 states have (on average 1.2692307692307692) internal successors, (660), 540 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:22,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 660 transitions. [2021-11-19 14:03:22,631 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 660 transitions. Word has length 95 [2021-11-19 14:03:22,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:22,631 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 660 transitions. [2021-11-19 14:03:22,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:22,632 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 660 transitions. [2021-11-19 14:03:22,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:03:22,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:22,632 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, 1, 1] [2021-11-19 14:03:22,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-19 14:03:22,633 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:22,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:22,633 INFO L85 PathProgramCache]: Analyzing trace with hash 222607760, now seen corresponding path program 1 times [2021-11-19 14:03:22,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:22,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789220116] [2021-11-19 14:03:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:22,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:22,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:22,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:22,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789220116] [2021-11-19 14:03:22,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789220116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:22,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:22,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:03:22,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836582311] [2021-11-19 14:03:22,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:22,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:03:22,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:22,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:03:22,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:03:22,804 INFO L87 Difference]: Start difference. First operand 541 states and 660 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:25,373 INFO L93 Difference]: Finished difference Result 1133 states and 1415 transitions. [2021-11-19 14:03:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:03:25,373 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:03:25,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:25,374 INFO L225 Difference]: With dead ends: 1133 [2021-11-19 14:03:25,374 INFO L226 Difference]: Without dead ends: 1084 [2021-11-19 14:03:25,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:03:25,375 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 3992 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3992 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 2675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:25,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3992 Valid, 2223 Invalid, 2675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:03:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-11-19 14:03:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 545. [2021-11-19 14:03:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 524 states have (on average 1.2671755725190839) internal successors, (664), 544 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 664 transitions. [2021-11-19 14:03:25,513 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 664 transitions. Word has length 95 [2021-11-19 14:03:25,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:25,513 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 664 transitions. [2021-11-19 14:03:25,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 664 transitions. [2021-11-19 14:03:25,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:03:25,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:25,515 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, 1, 1] [2021-11-19 14:03:25,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-19 14:03:25,515 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:25,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:25,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1892717732, now seen corresponding path program 1 times [2021-11-19 14:03:25,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:25,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735823362] [2021-11-19 14:03:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:25,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:25,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:25,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735823362] [2021-11-19 14:03:25,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735823362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:25,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:25,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:03:25,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933089527] [2021-11-19 14:03:25,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:25,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:03:25,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:25,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:03:25,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:03:25,818 INFO L87 Difference]: Start difference. First operand 545 states and 664 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:27,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:27,772 INFO L93 Difference]: Finished difference Result 1304 states and 1566 transitions. [2021-11-19 14:03:27,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:03:27,772 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-19 14:03:27,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:27,773 INFO L225 Difference]: With dead ends: 1304 [2021-11-19 14:03:27,774 INFO L226 Difference]: Without dead ends: 1130 [2021-11-19 14:03:27,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:03:27,774 INFO L933 BasicCegarLoop]: 811 mSDtfsCounter, 3059 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3059 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:27,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3059 Valid, 3469 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:03:27,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2021-11-19 14:03:27,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 418. [2021-11-19 14:03:27,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 402 states have (on average 1.2462686567164178) internal successors, (501), 417 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 501 transitions. [2021-11-19 14:03:27,899 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 501 transitions. Word has length 95 [2021-11-19 14:03:27,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:27,899 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 501 transitions. [2021-11-19 14:03:27,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:27,899 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 501 transitions. [2021-11-19 14:03:27,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:03:27,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:27,900 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, 1, 1, 1] [2021-11-19 14:03:27,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-19 14:03:27,900 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:27,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:27,900 INFO L85 PathProgramCache]: Analyzing trace with hash 977526231, now seen corresponding path program 1 times [2021-11-19 14:03:27,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:27,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582754070] [2021-11-19 14:03:27,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:27,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:27,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:27,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582754070] [2021-11-19 14:03:27,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582754070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:27,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:27,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:27,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199606709] [2021-11-19 14:03:27,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:27,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:27,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:28,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:28,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:28,000 INFO L87 Difference]: Start difference. First operand 418 states and 501 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:29,074 INFO L93 Difference]: Finished difference Result 720 states and 876 transitions. [2021-11-19 14:03:29,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:03:29,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-19 14:03:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:29,075 INFO L225 Difference]: With dead ends: 720 [2021-11-19 14:03:29,075 INFO L226 Difference]: Without dead ends: 668 [2021-11-19 14:03:29,076 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 [2021-11-19 14:03:29,076 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1197 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:29,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 1408 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:03:29,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-11-19 14:03:29,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 414. [2021-11-19 14:03:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 398 states have (on average 1.2462311557788945) internal successors, (496), 413 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 496 transitions. [2021-11-19 14:03:29,202 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 496 transitions. Word has length 96 [2021-11-19 14:03:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:29,202 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 496 transitions. [2021-11-19 14:03:29,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 496 transitions. [2021-11-19 14:03:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:03:29,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:29,203 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, 1, 1, 1] [2021-11-19 14:03:29,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-19 14:03:29,203 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:29,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2102961090, now seen corresponding path program 1 times [2021-11-19 14:03:29,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:29,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517358456] [2021-11-19 14:03:29,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:29,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:29,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:29,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517358456] [2021-11-19 14:03:29,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517358456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:29,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:29,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:29,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134140565] [2021-11-19 14:03:29,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:29,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:29,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:29,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:29,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:29,305 INFO L87 Difference]: Start difference. First operand 414 states and 496 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:30,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:30,499 INFO L93 Difference]: Finished difference Result 756 states and 923 transitions. [2021-11-19 14:03:30,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:03:30,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-19 14:03:30,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:30,500 INFO L225 Difference]: With dead ends: 756 [2021-11-19 14:03:30,500 INFO L226 Difference]: Without dead ends: 692 [2021-11-19 14:03:30,501 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 [2021-11-19 14:03:30,501 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1183 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:30,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1183 Valid, 1521 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:03:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-11-19 14:03:30,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 410. [2021-11-19 14:03:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 394 states have (on average 1.2461928934010151) internal successors, (491), 409 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 491 transitions. [2021-11-19 14:03:30,629 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 491 transitions. Word has length 96 [2021-11-19 14:03:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:30,629 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 491 transitions. [2021-11-19 14:03:30,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:30,629 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 491 transitions. [2021-11-19 14:03:30,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:03:30,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:30,630 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, 1, 1, 1] [2021-11-19 14:03:30,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-19 14:03:30,630 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:30,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:30,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1106914618, now seen corresponding path program 1 times [2021-11-19 14:03:30,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:30,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183293432] [2021-11-19 14:03:30,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:30,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:30,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:30,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183293432] [2021-11-19 14:03:30,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183293432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:30,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:30,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:30,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660735378] [2021-11-19 14:03:30,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:30,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:30,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:30,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:30,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:30,729 INFO L87 Difference]: Start difference. First operand 410 states and 491 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:31,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:31,857 INFO L93 Difference]: Finished difference Result 791 states and 967 transitions. [2021-11-19 14:03:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:03:31,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-19 14:03:31,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:31,858 INFO L225 Difference]: With dead ends: 791 [2021-11-19 14:03:31,858 INFO L226 Difference]: Without dead ends: 704 [2021-11-19 14:03:31,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:03:31,859 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 1179 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:31,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 1683 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:03:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-11-19 14:03:31,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 406. [2021-11-19 14:03:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 390 states have (on average 1.2461538461538462) internal successors, (486), 405 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 486 transitions. [2021-11-19 14:03:31,981 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 486 transitions. Word has length 96 [2021-11-19 14:03:31,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:31,981 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 486 transitions. [2021-11-19 14:03:31,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:31,982 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 486 transitions. [2021-11-19 14:03:31,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:03:31,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:31,983 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, 1, 1, 1] [2021-11-19 14:03:31,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-19 14:03:31,983 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:31,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:31,983 INFO L85 PathProgramCache]: Analyzing trace with hash 593507918, now seen corresponding path program 1 times [2021-11-19 14:03:31,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:31,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479725233] [2021-11-19 14:03:31,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:31,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:32,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:32,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479725233] [2021-11-19 14:03:32,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479725233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:32,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:32,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:32,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943194373] [2021-11-19 14:03:32,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:32,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:32,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:32,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:32,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:32,080 INFO L87 Difference]: Start difference. First operand 406 states and 486 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:33,200 INFO L93 Difference]: Finished difference Result 665 states and 802 transitions. [2021-11-19 14:03:33,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:03:33,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-19 14:03:33,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:33,201 INFO L225 Difference]: With dead ends: 665 [2021-11-19 14:03:33,201 INFO L226 Difference]: Without dead ends: 660 [2021-11-19 14:03:33,201 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 [2021-11-19 14:03:33,202 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1161 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:33,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1161 Valid, 1478 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:03:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-19 14:03:33,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 402. [2021-11-19 14:03:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 386 states have (on average 1.2461139896373057) internal successors, (481), 401 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 481 transitions. [2021-11-19 14:03:33,337 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 481 transitions. Word has length 96 [2021-11-19 14:03:33,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:33,337 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 481 transitions. [2021-11-19 14:03:33,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 481 transitions. [2021-11-19 14:03:33,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:03:33,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:33,338 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, 1, 1, 1] [2021-11-19 14:03:33,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-19 14:03:33,338 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:33,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1986737205, now seen corresponding path program 1 times [2021-11-19 14:03:33,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:33,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021666869] [2021-11-19 14:03:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:33,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:33,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:33,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021666869] [2021-11-19 14:03:33,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021666869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:33,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:33,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:33,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763822941] [2021-11-19 14:03:33,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:33,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:33,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:33,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:33,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:33,433 INFO L87 Difference]: Start difference. First operand 402 states and 481 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:34,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:34,560 INFO L93 Difference]: Finished difference Result 701 states and 849 transitions. [2021-11-19 14:03:34,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:03:34,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-19 14:03:34,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:34,561 INFO L225 Difference]: With dead ends: 701 [2021-11-19 14:03:34,561 INFO L226 Difference]: Without dead ends: 684 [2021-11-19 14:03:34,562 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 [2021-11-19 14:03:34,562 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 1588 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:34,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 1701 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:03:34,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-11-19 14:03:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 398. [2021-11-19 14:03:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 382 states have (on average 1.2460732984293195) internal successors, (476), 397 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 476 transitions. [2021-11-19 14:03:34,738 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 476 transitions. Word has length 96 [2021-11-19 14:03:34,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:34,739 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 476 transitions. [2021-11-19 14:03:34,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 476 transitions. [2021-11-19 14:03:34,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:03:34,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:34,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:34,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-19 14:03:34,740 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:34,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:34,741 INFO L85 PathProgramCache]: Analyzing trace with hash 960608400, now seen corresponding path program 1 times [2021-11-19 14:03:34,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:34,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222964377] [2021-11-19 14:03:34,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:34,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:34,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:34,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222964377] [2021-11-19 14:03:34,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222964377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:34,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:34,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:34,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663518461] [2021-11-19 14:03:34,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:34,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:34,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:34,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:34,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:34,855 INFO L87 Difference]: Start difference. First operand 398 states and 476 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:35,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:35,990 INFO L93 Difference]: Finished difference Result 661 states and 796 transitions. [2021-11-19 14:03:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:03:35,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-19 14:03:35,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:35,991 INFO L225 Difference]: With dead ends: 661 [2021-11-19 14:03:35,991 INFO L226 Difference]: Without dead ends: 656 [2021-11-19 14:03:35,991 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 [2021-11-19 14:03:35,991 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 1134 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:35,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1134 Valid, 1538 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:03:35,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-19 14:03:36,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 394. [2021-11-19 14:03:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 378 states have (on average 1.246031746031746) internal successors, (471), 393 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 471 transitions. [2021-11-19 14:03:36,128 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 471 transitions. Word has length 96 [2021-11-19 14:03:36,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:36,128 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 471 transitions. [2021-11-19 14:03:36,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 471 transitions. [2021-11-19 14:03:36,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:03:36,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:36,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:36,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-19 14:03:36,129 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:36,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:36,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1380049275, now seen corresponding path program 1 times [2021-11-19 14:03:36,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:36,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610407165] [2021-11-19 14:03:36,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:36,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:36,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:36,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610407165] [2021-11-19 14:03:36,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610407165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:36,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:36,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:36,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465867822] [2021-11-19 14:03:36,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:36,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:36,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:36,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:36,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:36,227 INFO L87 Difference]: Start difference. First operand 394 states and 471 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:37,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:37,326 INFO L93 Difference]: Finished difference Result 703 states and 853 transitions. [2021-11-19 14:03:37,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:03:37,326 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-19 14:03:37,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:37,328 INFO L225 Difference]: With dead ends: 703 [2021-11-19 14:03:37,328 INFO L226 Difference]: Without dead ends: 655 [2021-11-19 14:03:37,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:03:37,328 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 1677 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:37,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1677 Valid, 1479 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:03:37,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-11-19 14:03:37,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 393. [2021-11-19 14:03:37,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 377 states have (on average 1.2440318302387268) internal successors, (469), 392 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 469 transitions. [2021-11-19 14:03:37,490 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 469 transitions. Word has length 96 [2021-11-19 14:03:37,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:37,491 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 469 transitions. [2021-11-19 14:03:37,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 469 transitions. [2021-11-19 14:03:37,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 14:03:37,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:37,492 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, 1, 1, 1] [2021-11-19 14:03:37,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-19 14:03:37,492 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:37,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:37,492 INFO L85 PathProgramCache]: Analyzing trace with hash -534826916, now seen corresponding path program 1 times [2021-11-19 14:03:37,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:37,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565111028] [2021-11-19 14:03:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:37,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:37,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:37,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565111028] [2021-11-19 14:03:37,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565111028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:37,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:37,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:37,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840932052] [2021-11-19 14:03:37,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:37,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:37,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:37,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:37,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:37,589 INFO L87 Difference]: Start difference. First operand 393 states and 469 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:38,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:38,714 INFO L93 Difference]: Finished difference Result 704 states and 853 transitions. [2021-11-19 14:03:38,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:03:38,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-19 14:03:38,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:38,715 INFO L225 Difference]: With dead ends: 704 [2021-11-19 14:03:38,715 INFO L226 Difference]: Without dead ends: 655 [2021-11-19 14:03:38,716 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 [2021-11-19 14:03:38,716 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 1632 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:38,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1632 Valid, 1540 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:03:38,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-11-19 14:03:38,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 389. [2021-11-19 14:03:38,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 373 states have (on average 1.2439678284182305) internal successors, (464), 388 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:38,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 464 transitions. [2021-11-19 14:03:38,843 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 464 transitions. Word has length 96 [2021-11-19 14:03:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:38,843 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 464 transitions. [2021-11-19 14:03:38,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:38,844 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 464 transitions. [2021-11-19 14:03:38,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 14:03:38,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:38,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:38,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-19 14:03:38,845 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:38,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:38,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1212843376, now seen corresponding path program 1 times [2021-11-19 14:03:38,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:38,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199820726] [2021-11-19 14:03:38,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:38,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:40,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:40,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199820726] [2021-11-19 14:03:40,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199820726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:40,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:40,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-11-19 14:03:40,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351848657] [2021-11-19 14:03:40,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:40,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 14:03:40,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:40,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 14:03:40,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 14:03:40,511 INFO L87 Difference]: Start difference. First operand 389 states and 464 transitions. Second operand has 34 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:52,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:52,012 INFO L93 Difference]: Finished difference Result 1686 states and 2018 transitions. [2021-11-19 14:03:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 14:03:52,013 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-19 14:03:52,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:52,014 INFO L225 Difference]: With dead ends: 1686 [2021-11-19 14:03:52,014 INFO L226 Difference]: Without dead ends: 1635 [2021-11-19 14:03:52,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=547, Invalid=3235, Unknown=0, NotChecked=0, Total=3782 [2021-11-19 14:03:52,015 INFO L933 BasicCegarLoop]: 1278 mSDtfsCounter, 5404 mSDsluCounter, 23845 mSDsCounter, 0 mSdLazyCounter, 15825 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5404 SdHoareTripleChecker+Valid, 24975 SdHoareTripleChecker+Invalid, 16004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 15825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:52,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5404 Valid, 24975 Invalid, 16004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [179 Valid, 15825 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2021-11-19 14:03:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2021-11-19 14:03:52,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 414. [2021-11-19 14:03:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 398 states have (on average 1.2487437185929648) internal successors, (497), 413 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 497 transitions. [2021-11-19 14:03:52,161 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 497 transitions. Word has length 97 [2021-11-19 14:03:52,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:52,161 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 497 transitions. [2021-11-19 14:03:52,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 497 transitions. [2021-11-19 14:03:52,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 14:03:52,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:52,162 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, 1, 1, 1, 1] [2021-11-19 14:03:52,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-19 14:03:52,163 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:52,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:52,163 INFO L85 PathProgramCache]: Analyzing trace with hash 638588087, now seen corresponding path program 1 times [2021-11-19 14:03:52,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:52,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523380246] [2021-11-19 14:03:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:52,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:52,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:52,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523380246] [2021-11-19 14:03:52,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523380246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:52,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:52,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:03:52,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222496787] [2021-11-19 14:03:52,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:52,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:03:52,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:52,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:03:52,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:03:52,465 INFO L87 Difference]: Start difference. First operand 414 states and 497 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:53,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:53,827 INFO L93 Difference]: Finished difference Result 890 states and 1097 transitions. [2021-11-19 14:03:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:03:53,828 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-19 14:03:53,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:53,829 INFO L225 Difference]: With dead ends: 890 [2021-11-19 14:03:53,829 INFO L226 Difference]: Without dead ends: 810 [2021-11-19 14:03:53,829 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 [2021-11-19 14:03:53,829 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 1955 mSDsluCounter, 3261 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 3969 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:53,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1955 Valid, 3969 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:03:53,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-11-19 14:03:53,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 381. [2021-11-19 14:03:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 368 states have (on average 1.2418478260869565) internal successors, (457), 380 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:53,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 457 transitions. [2021-11-19 14:03:53,995 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 457 transitions. Word has length 97 [2021-11-19 14:03:53,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:53,995 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 457 transitions. [2021-11-19 14:03:53,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:53,996 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 457 transitions. [2021-11-19 14:03:53,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 14:03:53,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:53,996 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, 1, 1, 1, 1] [2021-11-19 14:03:53,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-19 14:03:53,997 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:53,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:53,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1773183359, now seen corresponding path program 1 times [2021-11-19 14:03:53,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:53,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343406725] [2021-11-19 14:03:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:53,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:54,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:54,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343406725] [2021-11-19 14:03:54,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343406725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:54,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:54,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-19 14:03:54,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459060997] [2021-11-19 14:03:54,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:54,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 14:03:54,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:54,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 14:03:54,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:03:54,840 INFO L87 Difference]: Start difference. First operand 381 states and 457 transitions. Second operand has 22 states, 22 states have (on average 4.409090909090909) internal successors, (97), 21 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:58,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:58,458 INFO L93 Difference]: Finished difference Result 1117 states and 1369 transitions. [2021-11-19 14:03:58,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 14:03:58,458 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.409090909090909) internal successors, (97), 21 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-19 14:03:58,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:58,459 INFO L225 Difference]: With dead ends: 1117 [2021-11-19 14:03:58,459 INFO L226 Difference]: Without dead ends: 1041 [2021-11-19 14:03:58,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=449, Invalid=1713, Unknown=0, NotChecked=0, Total=2162 [2021-11-19 14:03:58,460 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 3068 mSDsluCounter, 9568 mSDsCounter, 0 mSdLazyCounter, 2865 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3068 SdHoareTripleChecker+Valid, 10307 SdHoareTripleChecker+Invalid, 2959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:58,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3068 Valid, 10307 Invalid, 2959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2865 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 14:03:58,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2021-11-19 14:03:58,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 387. [2021-11-19 14:03:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 374 states have (on average 1.2379679144385027) internal successors, (463), 386 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 463 transitions. [2021-11-19 14:03:58,686 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 463 transitions. Word has length 97 [2021-11-19 14:03:58,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:58,686 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 463 transitions. [2021-11-19 14:03:58,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.409090909090909) internal successors, (97), 21 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:58,687 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 463 transitions. [2021-11-19 14:03:58,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 14:03:58,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:58,688 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, 1, 1, 1, 1] [2021-11-19 14:03:58,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-19 14:03:58,688 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:03:58,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:58,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2131959411, now seen corresponding path program 1 times [2021-11-19 14:03:58,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:58,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254272886] [2021-11-19 14:03:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:58,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:03:58,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:58,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254272886] [2021-11-19 14:03:58,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254272886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:58,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:58,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:03:58,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445005555] [2021-11-19 14:03:58,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:58,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:03:58,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:58,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:03:58,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:03:58,999 INFO L87 Difference]: Start difference. First operand 387 states and 463 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:00,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:00,289 INFO L93 Difference]: Finished difference Result 799 states and 986 transitions. [2021-11-19 14:04:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:04:00,290 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-19 14:04:00,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:00,290 INFO L225 Difference]: With dead ends: 799 [2021-11-19 14:04:00,291 INFO L226 Difference]: Without dead ends: 728 [2021-11-19 14:04:00,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:04:00,291 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 2122 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2122 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:00,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2122 Valid, 3169 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:04:00,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-11-19 14:04:00,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 363. [2021-11-19 14:04:00,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 351 states have (on average 1.2307692307692308) internal successors, (432), 362 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:00,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 432 transitions. [2021-11-19 14:04:00,459 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 432 transitions. Word has length 97 [2021-11-19 14:04:00,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:00,459 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 432 transitions. [2021-11-19 14:04:00,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:00,460 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 432 transitions. [2021-11-19 14:04:00,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 14:04:00,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:00,461 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, 1, 1, 1, 1] [2021-11-19 14:04:00,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-19 14:04:00,461 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:00,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash -133396310, now seen corresponding path program 1 times [2021-11-19 14:04:00,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:00,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096791655] [2021-11-19 14:04:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:00,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:00,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:00,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096791655] [2021-11-19 14:04:00,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096791655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:00,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:00,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 14:04:00,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322003348] [2021-11-19 14:04:00,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:00,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:04:00,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:00,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:04:00,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:04:00,778 INFO L87 Difference]: Start difference. First operand 363 states and 432 transitions. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:02,327 INFO L93 Difference]: Finished difference Result 935 states and 1145 transitions. [2021-11-19 14:04:02,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 14:04:02,328 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-19 14:04:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:02,329 INFO L225 Difference]: With dead ends: 935 [2021-11-19 14:04:02,329 INFO L226 Difference]: Without dead ends: 771 [2021-11-19 14:04:02,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-19 14:04:02,329 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 1750 mSDsluCounter, 3771 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 4394 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:02,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1750 Valid, 4394 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:04:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-11-19 14:04:02,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 246. [2021-11-19 14:04:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 239 states have (on average 1.205020920502092) internal successors, (288), 245 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 288 transitions. [2021-11-19 14:04:02,490 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 288 transitions. Word has length 97 [2021-11-19 14:04:02,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:02,490 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 288 transitions. [2021-11-19 14:04:02,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:02,490 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 288 transitions. [2021-11-19 14:04:02,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 14:04:02,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:02,491 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, 1, 1, 1, 1, 1] [2021-11-19 14:04:02,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-19 14:04:02,491 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:02,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:02,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1851448540, now seen corresponding path program 1 times [2021-11-19 14:04:02,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:02,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527207174] [2021-11-19 14:04:02,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:02,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:02,654 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:02,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527207174] [2021-11-19 14:04:02,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527207174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:02,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:02,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 14:04:02,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101606890] [2021-11-19 14:04:02,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:02,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:04:02,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:02,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:04:02,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:04:02,656 INFO L87 Difference]: Start difference. First operand 246 states and 288 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:04,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:04,583 INFO L93 Difference]: Finished difference Result 781 states and 978 transitions. [2021-11-19 14:04:04,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 14:04:04,583 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-19 14:04:04,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:04,584 INFO L225 Difference]: With dead ends: 781 [2021-11-19 14:04:04,584 INFO L226 Difference]: Without dead ends: 716 [2021-11-19 14:04:04,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2021-11-19 14:04:04,584 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 2608 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2608 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:04,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2608 Valid, 937 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:04:04,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-19 14:04:04,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 250. [2021-11-19 14:04:04,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 243 states have (on average 1.1975308641975309) internal successors, (291), 249 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 291 transitions. [2021-11-19 14:04:04,710 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 291 transitions. Word has length 98 [2021-11-19 14:04:04,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:04,710 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 291 transitions. [2021-11-19 14:04:04,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:04,710 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 291 transitions. [2021-11-19 14:04:04,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 14:04:04,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:04,711 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, 1, 1, 1, 1, 1] [2021-11-19 14:04:04,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-19 14:04:04,711 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:04,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:04,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1648868085, now seen corresponding path program 1 times [2021-11-19 14:04:04,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:04,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100875540] [2021-11-19 14:04:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:04,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:04,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:04,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100875540] [2021-11-19 14:04:04,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100875540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:04,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:04,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:04,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132473686] [2021-11-19 14:04:04,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:04,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:04,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:04,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:04,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:04,799 INFO L87 Difference]: Start difference. First operand 250 states and 291 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:05,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:05,635 INFO L93 Difference]: Finished difference Result 439 states and 528 transitions. [2021-11-19 14:04:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:04:05,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-19 14:04:05,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:05,636 INFO L225 Difference]: With dead ends: 439 [2021-11-19 14:04:05,636 INFO L226 Difference]: Without dead ends: 432 [2021-11-19 14:04:05,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:04:05,637 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1197 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:05,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 642 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:04:05,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-19 14:04:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 250. [2021-11-19 14:04:05,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 243 states have (on average 1.1893004115226338) internal successors, (289), 249 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 289 transitions. [2021-11-19 14:04:05,769 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 289 transitions. Word has length 98 [2021-11-19 14:04:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:05,769 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 289 transitions. [2021-11-19 14:04:05,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:05,769 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 289 transitions. [2021-11-19 14:04:05,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 14:04:05,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:05,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:05,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-19 14:04:05,770 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:05,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:05,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1496260911, now seen corresponding path program 1 times [2021-11-19 14:04:05,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:05,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455384465] [2021-11-19 14:04:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:05,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:06,063 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:06,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455384465] [2021-11-19 14:04:06,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455384465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:06,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:06,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:04:06,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849043659] [2021-11-19 14:04:06,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:06,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:04:06,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:06,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:04:06,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:04:06,064 INFO L87 Difference]: Start difference. First operand 250 states and 289 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:06,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:06,839 INFO L93 Difference]: Finished difference Result 389 states and 461 transitions. [2021-11-19 14:04:06,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:04:06,839 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-19 14:04:06,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:06,840 INFO L225 Difference]: With dead ends: 389 [2021-11-19 14:04:06,840 INFO L226 Difference]: Without dead ends: 338 [2021-11-19 14:04:06,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:04:06,840 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1082 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:06,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 1258 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:04:06,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-11-19 14:04:06,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 221. [2021-11-19 14:04:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 215 states have (on average 1.1767441860465115) internal successors, (253), 220 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 253 transitions. [2021-11-19 14:04:06,972 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 253 transitions. Word has length 98 [2021-11-19 14:04:06,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:06,972 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 253 transitions. [2021-11-19 14:04:06,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 253 transitions. [2021-11-19 14:04:06,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 14:04:06,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:06,973 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, 1, 1, 1, 1, 1] [2021-11-19 14:04:06,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-19 14:04:06,973 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:06,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:06,974 INFO L85 PathProgramCache]: Analyzing trace with hash 162352470, now seen corresponding path program 1 times [2021-11-19 14:04:06,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:06,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081297702] [2021-11-19 14:04:06,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:06,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:07,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:07,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081297702] [2021-11-19 14:04:07,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081297702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:07,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:07,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-19 14:04:07,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126184252] [2021-11-19 14:04:07,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:07,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:04:07,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:07,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:04:07,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:04:07,453 INFO L87 Difference]: Start difference. First operand 221 states and 253 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:09,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:09,298 INFO L93 Difference]: Finished difference Result 660 states and 805 transitions. [2021-11-19 14:04:09,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 14:04:09,298 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-19 14:04:09,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:09,299 INFO L225 Difference]: With dead ends: 660 [2021-11-19 14:04:09,299 INFO L226 Difference]: Without dead ends: 589 [2021-11-19 14:04:09,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 14:04:09,300 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 2095 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 3917 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:09,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2095 Valid, 3917 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:04:09,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-11-19 14:04:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 215. [2021-11-19 14:04:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 209 states have (on average 1.1770334928229664) internal successors, (246), 214 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:09,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 246 transitions. [2021-11-19 14:04:09,423 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 246 transitions. Word has length 98 [2021-11-19 14:04:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:09,423 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 246 transitions. [2021-11-19 14:04:09,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:09,424 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 246 transitions. [2021-11-19 14:04:09,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 14:04:09,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:09,424 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, 1, 1, 1, 1, 1] [2021-11-19 14:04:09,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-19 14:04:09,424 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:09,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:09,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1432987129, now seen corresponding path program 1 times [2021-11-19 14:04:09,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:09,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421225112] [2021-11-19 14:04:09,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:09,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:09,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:09,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421225112] [2021-11-19 14:04:09,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421225112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:09,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:09,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:04:09,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841564046] [2021-11-19 14:04:09,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:09,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:04:09,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:09,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:04:09,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:04:09,702 INFO L87 Difference]: Start difference. First operand 215 states and 246 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:10,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:10,457 INFO L93 Difference]: Finished difference Result 358 states and 421 transitions. [2021-11-19 14:04:10,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:04:10,458 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-19 14:04:10,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:10,458 INFO L225 Difference]: With dead ends: 358 [2021-11-19 14:04:10,458 INFO L226 Difference]: Without dead ends: 307 [2021-11-19 14:04:10,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:04:10,459 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 1045 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:10,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 1134 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:04:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-19 14:04:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 211. [2021-11-19 14:04:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 206 states have (on average 1.1699029126213591) internal successors, (241), 210 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:10,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2021-11-19 14:04:10,580 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 241 transitions. Word has length 98 [2021-11-19 14:04:10,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:10,580 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 241 transitions. [2021-11-19 14:04:10,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:10,580 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 241 transitions. [2021-11-19 14:04:10,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 14:04:10,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:10,581 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, 1, 1, 1, 1, 1] [2021-11-19 14:04:10,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-19 14:04:10,581 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:10,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1580439968, now seen corresponding path program 1 times [2021-11-19 14:04:10,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:10,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048919316] [2021-11-19 14:04:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:10,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:10,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:10,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048919316] [2021-11-19 14:04:10,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048919316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:10,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:10,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:04:10,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774054294] [2021-11-19 14:04:10,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:10,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:04:10,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:10,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:04:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:04:10,829 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:11,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:11,912 INFO L93 Difference]: Finished difference Result 546 states and 656 transitions. [2021-11-19 14:04:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:04:11,918 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-19 14:04:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:11,918 INFO L225 Difference]: With dead ends: 546 [2021-11-19 14:04:11,918 INFO L226 Difference]: Without dead ends: 464 [2021-11-19 14:04:11,919 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 [2021-11-19 14:04:11,919 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 963 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:11,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 2330 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:04:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-11-19 14:04:12,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 176. [2021-11-19 14:04:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 173 states have (on average 1.1560693641618498) internal successors, (200), 175 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:12,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 200 transitions. [2021-11-19 14:04:12,032 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 200 transitions. Word has length 98 [2021-11-19 14:04:12,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:12,032 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 200 transitions. [2021-11-19 14:04:12,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 200 transitions. [2021-11-19 14:04:12,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-19 14:04:12,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:12,033 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, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:12,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-19 14:04:12,033 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash 526405733, now seen corresponding path program 1 times [2021-11-19 14:04:12,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:12,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912703180] [2021-11-19 14:04:12,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:12,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:12,126 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:12,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912703180] [2021-11-19 14:04:12,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912703180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:12,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:12,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:04:12,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081021329] [2021-11-19 14:04:12,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:12,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:12,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:12,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:12,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:12,128 INFO L87 Difference]: Start difference. First operand 176 states and 200 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:12,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:12,858 INFO L93 Difference]: Finished difference Result 323 states and 383 transitions. [2021-11-19 14:04:12,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:04:12,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-19 14:04:12,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:12,859 INFO L225 Difference]: With dead ends: 323 [2021-11-19 14:04:12,859 INFO L226 Difference]: Without dead ends: 258 [2021-11-19 14:04:12,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:04:12,860 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 677 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:12,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 547 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:04:12,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-19 14:04:12,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 172. [2021-11-19 14:04:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 169 states have (on average 1.1538461538461537) internal successors, (195), 171 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 195 transitions. [2021-11-19 14:04:12,987 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 195 transitions. Word has length 99 [2021-11-19 14:04:12,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:12,987 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 195 transitions. [2021-11-19 14:04:12,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:12,988 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 195 transitions. [2021-11-19 14:04:12,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:04:12,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:12,988 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:12,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-19 14:04:12,989 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:12,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:12,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1289791201, now seen corresponding path program 1 times [2021-11-19 14:04:12,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:12,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479949506] [2021-11-19 14:04:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:12,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:14,457 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:14,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479949506] [2021-11-19 14:04:14,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479949506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:14,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:14,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-19 14:04:14,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690152784] [2021-11-19 14:04:14,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:14,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-19 14:04:14,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:14,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-19 14:04:14,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2021-11-19 14:04:14,459 INFO L87 Difference]: Start difference. First operand 172 states and 195 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:20,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:20,457 INFO L93 Difference]: Finished difference Result 820 states and 992 transitions. [2021-11-19 14:04:20,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 14:04:20,457 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-19 14:04:20,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:20,458 INFO L225 Difference]: With dead ends: 820 [2021-11-19 14:04:20,458 INFO L226 Difference]: Without dead ends: 814 [2021-11-19 14:04:20,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=539, Invalid=3001, Unknown=0, NotChecked=0, Total=3540 [2021-11-19 14:04:20,459 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 2031 mSDsluCounter, 10898 mSDsCounter, 0 mSdLazyCounter, 5644 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2031 SdHoareTripleChecker+Valid, 11286 SdHoareTripleChecker+Invalid, 5713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 5644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:20,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2031 Valid, 11286 Invalid, 5713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 5644 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 14:04:20,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-11-19 14:04:20,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 198. [2021-11-19 14:04:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 195 states have (on average 1.1641025641025642) internal successors, (227), 197 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 227 transitions. [2021-11-19 14:04:20,630 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 227 transitions. Word has length 100 [2021-11-19 14:04:20,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:20,630 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 227 transitions. [2021-11-19 14:04:20,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:20,631 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 227 transitions. [2021-11-19 14:04:20,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:04:20,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:20,631 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:20,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-19 14:04:20,631 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:20,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:20,632 INFO L85 PathProgramCache]: Analyzing trace with hash -665675578, now seen corresponding path program 1 times [2021-11-19 14:04:20,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:20,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782855725] [2021-11-19 14:04:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:20,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:21,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:21,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782855725] [2021-11-19 14:04:21,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782855725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:21,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:21,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-19 14:04:21,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622836950] [2021-11-19 14:04:21,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:21,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-19 14:04:21,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-19 14:04:21,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:04:21,962 INFO L87 Difference]: Start difference. First operand 198 states and 227 transitions. Second operand has 32 states, 32 states have (on average 3.125) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:27,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:27,728 INFO L93 Difference]: Finished difference Result 725 states and 866 transitions. [2021-11-19 14:04:27,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-19 14:04:27,728 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.125) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-19 14:04:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:27,729 INFO L225 Difference]: With dead ends: 725 [2021-11-19 14:04:27,729 INFO L226 Difference]: Without dead ends: 717 [2021-11-19 14:04:27,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=521, Invalid=2901, Unknown=0, NotChecked=0, Total=3422 [2021-11-19 14:04:27,730 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1833 mSDsluCounter, 9437 mSDsCounter, 0 mSdLazyCounter, 4937 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 9830 SdHoareTripleChecker+Invalid, 4999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 4937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:27,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 9830 Invalid, 4999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 4937 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 14:04:27,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-11-19 14:04:27,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 202. [2021-11-19 14:04:27,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 199 states have (on average 1.1658291457286432) internal successors, (232), 201 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:27,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2021-11-19 14:04:27,865 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 100 [2021-11-19 14:04:27,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:27,866 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2021-11-19 14:04:27,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.125) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:27,866 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2021-11-19 14:04:27,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 14:04:27,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:27,866 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:27,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-19 14:04:27,866 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:27,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:27,867 INFO L85 PathProgramCache]: Analyzing trace with hash -2052645067, now seen corresponding path program 1 times [2021-11-19 14:04:27,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:27,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301149168] [2021-11-19 14:04:27,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:27,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:28,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:28,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301149168] [2021-11-19 14:04:28,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301149168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:28,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:28,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:04:28,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406708548] [2021-11-19 14:04:28,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:28,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:04:28,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:28,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:04:28,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:04:28,164 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:29,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:29,298 INFO L93 Difference]: Finished difference Result 406 states and 489 transitions. [2021-11-19 14:04:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:04:29,298 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-19 14:04:29,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:29,299 INFO L225 Difference]: With dead ends: 406 [2021-11-19 14:04:29,299 INFO L226 Difference]: Without dead ends: 391 [2021-11-19 14:04:29,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:04:29,299 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 985 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:29,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 1980 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:04:29,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-19 14:04:29,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 186. [2021-11-19 14:04:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 184 states have (on average 1.1630434782608696) internal successors, (214), 185 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 214 transitions. [2021-11-19 14:04:29,428 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 214 transitions. Word has length 101 [2021-11-19 14:04:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:29,428 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 214 transitions. [2021-11-19 14:04:29,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 214 transitions. [2021-11-19 14:04:29,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 14:04:29,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:29,428 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:29,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-19 14:04:29,429 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:29,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:29,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1441605077, now seen corresponding path program 1 times [2021-11-19 14:04:29,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:29,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327713069] [2021-11-19 14:04:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:29,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:29,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:29,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327713069] [2021-11-19 14:04:29,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327713069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:29,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:29,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:04:29,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54255456] [2021-11-19 14:04:29,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:29,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:04:29,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:29,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:04:29,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:04:29,726 INFO L87 Difference]: Start difference. First operand 186 states and 214 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:30,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:30,852 INFO L93 Difference]: Finished difference Result 354 states and 430 transitions. [2021-11-19 14:04:30,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:04:30,853 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-19 14:04:30,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:30,854 INFO L225 Difference]: With dead ends: 354 [2021-11-19 14:04:30,854 INFO L226 Difference]: Without dead ends: 348 [2021-11-19 14:04:30,854 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 [2021-11-19 14:04:30,854 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 781 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:30,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 1557 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:04:30,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-11-19 14:04:30,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 154. [2021-11-19 14:04:30,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.1503267973856208) internal successors, (176), 153 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:30,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 176 transitions. [2021-11-19 14:04:30,972 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 176 transitions. Word has length 101 [2021-11-19 14:04:30,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:30,972 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 176 transitions. [2021-11-19 14:04:30,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:30,972 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 176 transitions. [2021-11-19 14:04:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-19 14:04:30,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:30,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:30,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-19 14:04:30,973 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:30,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash 457984807, now seen corresponding path program 1 times [2021-11-19 14:04:30,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:30,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887145026] [2021-11-19 14:04:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:30,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:31,025 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:31,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887145026] [2021-11-19 14:04:31,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887145026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:31,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:31,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:04:31,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268677682] [2021-11-19 14:04:31,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:31,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:04:31,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:31,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:04:31,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:31,028 INFO L87 Difference]: Start difference. First operand 154 states and 176 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:31,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:31,286 INFO L93 Difference]: Finished difference Result 248 states and 300 transitions. [2021-11-19 14:04:31,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:04:31,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-19 14:04:31,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:31,287 INFO L225 Difference]: With dead ends: 248 [2021-11-19 14:04:31,287 INFO L226 Difference]: Without dead ends: 201 [2021-11-19 14:04:31,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:31,288 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 72 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:31,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 334 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:04:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-19 14:04:31,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 195. [2021-11-19 14:04:31,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.190721649484536) internal successors, (231), 194 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 231 transitions. [2021-11-19 14:04:31,493 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 231 transitions. Word has length 118 [2021-11-19 14:04:31,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:31,494 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 231 transitions. [2021-11-19 14:04:31,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:31,494 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 231 transitions. [2021-11-19 14:04:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 14:04:31,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:31,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:31,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-19 14:04:31,495 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:31,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:31,495 INFO L85 PathProgramCache]: Analyzing trace with hash 272871055, now seen corresponding path program 1 times [2021-11-19 14:04:31,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:31,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608891571] [2021-11-19 14:04:31,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:31,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:31,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:31,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608891571] [2021-11-19 14:04:31,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608891571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:31,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:31,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:04:31,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042059531] [2021-11-19 14:04:31,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:31,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:04:31,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:31,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:04:31,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:31,540 INFO L87 Difference]: Start difference. First operand 195 states and 231 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:32,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:32,011 INFO L93 Difference]: Finished difference Result 371 states and 465 transitions. [2021-11-19 14:04:32,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:04:32,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-19 14:04:32,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:32,012 INFO L225 Difference]: With dead ends: 371 [2021-11-19 14:04:32,012 INFO L226 Difference]: Without dead ends: 283 [2021-11-19 14:04:32,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:32,013 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 65 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:32,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 334 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:04:32,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-19 14:04:32,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 273. [2021-11-19 14:04:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.2316176470588236) internal successors, (335), 272 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 335 transitions. [2021-11-19 14:04:32,415 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 335 transitions. Word has length 121 [2021-11-19 14:04:32,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:32,415 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 335 transitions. [2021-11-19 14:04:32,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:32,415 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 335 transitions. [2021-11-19 14:04:32,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-19 14:04:32,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:32,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:32,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-19 14:04:32,416 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1770983763, now seen corresponding path program 1 times [2021-11-19 14:04:32,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:32,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023728750] [2021-11-19 14:04:32,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:32,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:32,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:32,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023728750] [2021-11-19 14:04:32,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023728750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:32,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:32,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:04:32,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539002719] [2021-11-19 14:04:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:32,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:04:32,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:04:32,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:32,460 INFO L87 Difference]: Start difference. First operand 273 states and 335 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:33,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:33,261 INFO L93 Difference]: Finished difference Result 605 states and 777 transitions. [2021-11-19 14:04:33,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:04:33,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-19 14:04:33,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:33,263 INFO L225 Difference]: With dead ends: 605 [2021-11-19 14:04:33,263 INFO L226 Difference]: Without dead ends: 439 [2021-11-19 14:04:33,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:33,263 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 58 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:33,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 334 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:04:33,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-19 14:04:33,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 421. [2021-11-19 14:04:33,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.2642857142857142) internal successors, (531), 420 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 531 transitions. [2021-11-19 14:04:33,983 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 531 transitions. Word has length 124 [2021-11-19 14:04:33,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:33,983 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 531 transitions. [2021-11-19 14:04:33,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:33,983 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 531 transitions. [2021-11-19 14:04:33,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 14:04:33,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:33,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:33,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-19 14:04:33,984 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:33,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:33,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1552703886, now seen corresponding path program 1 times [2021-11-19 14:04:33,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:33,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547874567] [2021-11-19 14:04:33,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:33,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:34,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:34,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547874567] [2021-11-19 14:04:34,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547874567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:34,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:34,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:04:34,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717566150] [2021-11-19 14:04:34,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:34,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:04:34,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:34,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:04:34,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:34,036 INFO L87 Difference]: Start difference. First operand 421 states and 531 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:35,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:35,495 INFO L93 Difference]: Finished difference Result 1049 states and 1365 transitions. [2021-11-19 14:04:35,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:04:35,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-19 14:04:35,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:35,497 INFO L225 Difference]: With dead ends: 1049 [2021-11-19 14:04:35,497 INFO L226 Difference]: Without dead ends: 735 [2021-11-19 14:04:35,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:35,498 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 51 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:35,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 334 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:04:35,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-19 14:04:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 701. [2021-11-19 14:04:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 1.2842857142857143) internal successors, (899), 700 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:36,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 899 transitions. [2021-11-19 14:04:36,907 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 899 transitions. Word has length 127 [2021-11-19 14:04:36,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:36,907 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 899 transitions. [2021-11-19 14:04:36,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:36,908 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 899 transitions. [2021-11-19 14:04:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-19 14:04:36,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:36,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:36,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-19 14:04:36,910 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:36,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:36,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1361539994, now seen corresponding path program 1 times [2021-11-19 14:04:36,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:36,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416835907] [2021-11-19 14:04:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:36,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:36,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:36,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416835907] [2021-11-19 14:04:36,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416835907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:36,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:36,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:04:36,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381356453] [2021-11-19 14:04:36,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:36,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:04:36,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:36,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:04:36,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:36,961 INFO L87 Difference]: Start difference. First operand 701 states and 899 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:39,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:39,808 INFO L93 Difference]: Finished difference Result 1889 states and 2469 transitions. [2021-11-19 14:04:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:04:39,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-19 14:04:39,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:39,810 INFO L225 Difference]: With dead ends: 1889 [2021-11-19 14:04:39,810 INFO L226 Difference]: Without dead ends: 1295 [2021-11-19 14:04:39,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:39,811 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 44 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:39,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 334 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:04:39,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2021-11-19 14:04:42,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1229. [2021-11-19 14:04:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 1.2923452768729642) internal successors, (1587), 1228 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1587 transitions. [2021-11-19 14:04:42,638 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1587 transitions. Word has length 130 [2021-11-19 14:04:42,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:42,639 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 1587 transitions. [2021-11-19 14:04:42,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1587 transitions. [2021-11-19 14:04:42,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-19 14:04:42,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:42,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:42,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-19 14:04:42,640 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:42,640 INFO L85 PathProgramCache]: Analyzing trace with hash -935762193, now seen corresponding path program 1 times [2021-11-19 14:04:42,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:42,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873091531] [2021-11-19 14:04:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:42,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:42,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:42,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873091531] [2021-11-19 14:04:42,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873091531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:42,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:42,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:04:42,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127629200] [2021-11-19 14:04:42,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:42,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:04:42,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:42,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:04:42,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:42,684 INFO L87 Difference]: Start difference. First operand 1229 states and 1587 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:48,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:48,106 INFO L93 Difference]: Finished difference Result 3473 states and 4533 transitions. [2021-11-19 14:04:48,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:04:48,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-19 14:04:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:48,109 INFO L225 Difference]: With dead ends: 3473 [2021-11-19 14:04:48,109 INFO L226 Difference]: Without dead ends: 2351 [2021-11-19 14:04:48,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:48,110 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 34 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:48,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 334 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:04:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-11-19 14:04:53,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 2221. [2021-11-19 14:04:53,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 2220 states have (on average 1.2914414414414415) internal successors, (2867), 2220 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:53,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2867 transitions. [2021-11-19 14:04:53,150 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2867 transitions. Word has length 133 [2021-11-19 14:04:53,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:53,150 INFO L470 AbstractCegarLoop]: Abstraction has 2221 states and 2867 transitions. [2021-11-19 14:04:53,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:04:53,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2867 transitions. [2021-11-19 14:04:53,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-19 14:04:53,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:53,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:53,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-19 14:04:53,152 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:04:53,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:53,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1161915133, now seen corresponding path program 1 times [2021-11-19 14:04:53,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:04:53,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421317188] [2021-11-19 14:04:53,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:53,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:04:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:53,242 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:04:53,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421317188] [2021-11-19 14:04:53,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421317188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:53,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:53,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:04:53,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879186566] [2021-11-19 14:04:53,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:53,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:04:53,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:04:53,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:04:53,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:04:53,244 INFO L87 Difference]: Start difference. First operand 2221 states and 2867 transitions. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:09,036 INFO L93 Difference]: Finished difference Result 8835 states and 11459 transitions. [2021-11-19 14:05:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:05:09,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-19 14:05:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:09,043 INFO L225 Difference]: With dead ends: 8835 [2021-11-19 14:05:09,044 INFO L226 Difference]: Without dead ends: 6721 [2021-11-19 14:05:09,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:05:09,046 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 1125 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:09,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 2054 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:05:09,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2021-11-19 14:05:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 2986. [2021-11-19 14:05:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2986 states, 2985 states have (on average 1.2810720268006701) internal successors, (3824), 2985 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:16,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 3824 transitions. [2021-11-19 14:05:16,123 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 3824 transitions. Word has length 136 [2021-11-19 14:05:16,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:16,123 INFO L470 AbstractCegarLoop]: Abstraction has 2986 states and 3824 transitions. [2021-11-19 14:05:16,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 3824 transitions. [2021-11-19 14:05:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-19 14:05:16,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:16,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:16,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-19 14:05:16,124 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:05:16,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:16,124 INFO L85 PathProgramCache]: Analyzing trace with hash -33577069, now seen corresponding path program 1 times [2021-11-19 14:05:16,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:16,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174752307] [2021-11-19 14:05:16,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:16,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:16,174 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:16,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174752307] [2021-11-19 14:05:16,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174752307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:16,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:16,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:05:16,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41168053] [2021-11-19 14:05:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:16,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:05:16,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:16,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:05:16,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:05:16,176 INFO L87 Difference]: Start difference. First operand 2986 states and 3824 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:26,388 INFO L93 Difference]: Finished difference Result 7083 states and 9103 transitions. [2021-11-19 14:05:26,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:05:26,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-19 14:05:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:26,393 INFO L225 Difference]: With dead ends: 7083 [2021-11-19 14:05:26,393 INFO L226 Difference]: Without dead ends: 4204 [2021-11-19 14:05:26,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:05:26,396 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 91 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:26,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 258 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:05:26,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-11-19 14:05:36,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 4202. [2021-11-19 14:05:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4202 states, 4201 states have (on average 1.2756486550821233) internal successors, (5359), 4201 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 5359 transitions. [2021-11-19 14:05:36,012 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 5359 transitions. Word has length 138 [2021-11-19 14:05:36,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:36,012 INFO L470 AbstractCegarLoop]: Abstraction has 4202 states and 5359 transitions. [2021-11-19 14:05:36,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 5359 transitions. [2021-11-19 14:05:36,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-19 14:05:36,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:36,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:36,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-19 14:05:36,013 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:05:36,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:36,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1875011963, now seen corresponding path program 1 times [2021-11-19 14:05:36,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:36,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185817444] [2021-11-19 14:05:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:36,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:36,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:36,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185817444] [2021-11-19 14:05:36,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185817444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:36,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:36,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:05:36,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239095860] [2021-11-19 14:05:36,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:36,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:05:36,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:36,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:05:36,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:05:36,060 INFO L87 Difference]: Start difference. First operand 4202 states and 5359 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:45,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:45,639 INFO L93 Difference]: Finished difference Result 8299 states and 10605 transitions. [2021-11-19 14:05:45,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:05:45,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-19 14:05:45,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:45,644 INFO L225 Difference]: With dead ends: 8299 [2021-11-19 14:05:45,644 INFO L226 Difference]: Without dead ends: 4204 [2021-11-19 14:05:45,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:05:45,648 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 34 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:45,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 269 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:05:45,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-11-19 14:05:55,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 4202. [2021-11-19 14:05:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4202 states, 4201 states have (on average 1.2754106165198762) internal successors, (5358), 4201 states have internal predecessors, (5358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 5358 transitions. [2021-11-19 14:05:55,328 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 5358 transitions. Word has length 138 [2021-11-19 14:05:55,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:55,329 INFO L470 AbstractCegarLoop]: Abstraction has 4202 states and 5358 transitions. [2021-11-19 14:05:55,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:05:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 5358 transitions. [2021-11-19 14:05:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-19 14:05:55,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:55,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:55,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-19 14:05:55,330 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:05:55,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:55,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2329038, now seen corresponding path program 1 times [2021-11-19 14:05:55,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:05:55,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85231077] [2021-11-19 14:05:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:55,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:05:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:05:55,407 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:05:55,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85231077] [2021-11-19 14:05:55,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85231077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:55,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:55,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:05:55,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790238523] [2021-11-19 14:05:55,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:55,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:05:55,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:05:55,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:05:55,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:05:55,409 INFO L87 Difference]: Start difference. First operand 4202 states and 5358 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:09,716 INFO L93 Difference]: Finished difference Result 6010 states and 7586 transitions. [2021-11-19 14:06:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:06:09,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-19 14:06:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:09,722 INFO L225 Difference]: With dead ends: 6010 [2021-11-19 14:06:09,722 INFO L226 Difference]: Without dead ends: 6008 [2021-11-19 14:06:09,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:06:09,729 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 367 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:09,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 1083 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:06:09,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6008 states. [2021-11-19 14:06:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6008 to 4202. [2021-11-19 14:06:19,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4202 states, 4201 states have (on average 1.2601761485360627) internal successors, (5294), 4201 states have internal predecessors, (5294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 5294 transitions. [2021-11-19 14:06:19,318 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 5294 transitions. Word has length 139 [2021-11-19 14:06:19,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:19,318 INFO L470 AbstractCegarLoop]: Abstraction has 4202 states and 5294 transitions. [2021-11-19 14:06:19,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:19,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 5294 transitions. [2021-11-19 14:06:19,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-19 14:06:19,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:19,320 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:19,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-19 14:06:19,320 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:06:19,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:19,320 INFO L85 PathProgramCache]: Analyzing trace with hash -218574846, now seen corresponding path program 1 times [2021-11-19 14:06:19,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:19,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754421931] [2021-11-19 14:06:19,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:19,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 14:06:19,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:19,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754421931] [2021-11-19 14:06:19,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754421931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:19,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:19,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:06:19,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275675129] [2021-11-19 14:06:19,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:19,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:06:19,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:19,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:06:19,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:06:19,458 INFO L87 Difference]: Start difference. First operand 4202 states and 5294 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:34,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:34,902 INFO L93 Difference]: Finished difference Result 10597 states and 13373 transitions. [2021-11-19 14:06:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:06:34,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-19 14:06:34,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:34,909 INFO L225 Difference]: With dead ends: 10597 [2021-11-19 14:06:34,909 INFO L226 Difference]: Without dead ends: 6496 [2021-11-19 14:06:34,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:06:34,913 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 583 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:34,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 442 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:06:34,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6496 states. [2021-11-19 14:06:44,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6496 to 4202. [2021-11-19 14:06:44,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4202 states, 4201 states have (on average 1.2599381099738158) internal successors, (5293), 4201 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4202 states to 4202 states and 5293 transitions. [2021-11-19 14:06:44,562 INFO L78 Accepts]: Start accepts. Automaton has 4202 states and 5293 transitions. Word has length 157 [2021-11-19 14:06:44,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:44,562 INFO L470 AbstractCegarLoop]: Abstraction has 4202 states and 5293 transitions. [2021-11-19 14:06:44,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4202 states and 5293 transitions. [2021-11-19 14:06:44,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-19 14:06:44,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:44,563 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:44,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-19 14:06:44,564 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:06:44,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:44,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1879004835, now seen corresponding path program 1 times [2021-11-19 14:06:44,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:44,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354818009] [2021-11-19 14:06:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:44,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 14:06:45,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:45,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354818009] [2021-11-19 14:06:45,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354818009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:45,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:45,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-19 14:06:45,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937273909] [2021-11-19 14:06:45,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:45,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-19 14:06:45,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:45,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-19 14:06:45,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=865, Unknown=0, NotChecked=0, Total=930 [2021-11-19 14:06:45,559 INFO L87 Difference]: Start difference. First operand 4202 states and 5293 transitions. Second operand has 31 states, 31 states have (on average 4.806451612903226) internal successors, (149), 31 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:17,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:07:17,975 INFO L93 Difference]: Finished difference Result 16353 states and 20669 transitions. [2021-11-19 14:07:17,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 14:07:17,975 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.806451612903226) internal successors, (149), 31 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-11-19 14:07:17,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:07:17,988 INFO L225 Difference]: With dead ends: 16353 [2021-11-19 14:07:17,989 INFO L226 Difference]: Without dead ends: 12251 [2021-11-19 14:07:17,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=428, Invalid=2764, Unknown=0, NotChecked=0, Total=3192 [2021-11-19 14:07:17,994 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 1802 mSDsluCounter, 9402 mSDsCounter, 0 mSdLazyCounter, 5344 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 9694 SdHoareTripleChecker+Invalid, 5394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 5344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:07:17,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1802 Valid, 9694 Invalid, 5394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 5344 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-19 14:07:18,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12251 states. [2021-11-19 14:07:27,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12251 to 4227. [2021-11-19 14:07:27,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4227 states, 4226 states have (on average 1.2593469001419781) internal successors, (5322), 4226 states have internal predecessors, (5322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 5322 transitions. [2021-11-19 14:07:28,000 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 5322 transitions. Word has length 159 [2021-11-19 14:07:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:07:28,000 INFO L470 AbstractCegarLoop]: Abstraction has 4227 states and 5322 transitions. [2021-11-19 14:07:28,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.806451612903226) internal successors, (149), 31 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:07:28,000 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 5322 transitions. [2021-11-19 14:07:28,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-19 14:07:28,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:07:28,002 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:07:28,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-19 14:07:28,002 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-19 14:07:28,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:07:28,002 INFO L85 PathProgramCache]: Analyzing trace with hash -988807379, now seen corresponding path program 1 times [2021-11-19 14:07:28,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:07:28,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400164279] [2021-11-19 14:07:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:28,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:07:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:07:38,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:07:38,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400164279] [2021-11-19 14:07:38,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400164279] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:07:38,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61885403] [2021-11-19 14:07:38,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:07:38,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:07:38,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:07:38,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:07:38,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a0aa96-3343-4efa-9f8f-affb007038a9/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 14:07:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:07:39,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 110 conjunts are in the unsatisfiable core [2021-11-19 14:07:39,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:08:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:08:52,683 INFO L328 TraceCheckSpWp]: Computing backward predicates...