./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur --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 7853b3826176a0fe575c35877885ca2c640283bf6a2200e21b7819452b726d2c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:48:15,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:48:15,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:48:15,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:48:15,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:48:15,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:48:15,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:48:15,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:48:15,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:48:15,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:48:15,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:48:15,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:48:15,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:48:15,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:48:15,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:48:15,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:48:15,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:48:15,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:48:15,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:48:15,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:48:15,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:48:15,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:48:15,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:48:15,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:48:15,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:48:15,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:48:15,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:48:15,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:48:15,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:48:15,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:48:15,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:48:15,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:48:15,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:48:15,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:48:15,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:48:15,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:48:15,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:48:15,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:48:15,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:48:15,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:48:15,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:48:15,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:48:15,254 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:48:15,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:48:15,256 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:48:15,256 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:48:15,257 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:48:15,258 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:48:15,258 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:48:15,258 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:48:15,259 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:48:15,259 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:48:15,261 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:48:15,261 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:48:15,261 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:48:15,262 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:48:15,262 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:48:15,263 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:48:15,263 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:48:15,263 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:48:15,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:48:15,265 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:48:15,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:48:15,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:48:15,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:48:15,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:48:15,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:48:15,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:48:15,268 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:48:15,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:48:15,269 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:48:15,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:48:15,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:48:15,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:48:15,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:48:15,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:48:15,271 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:48:15,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:48:15,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:48:15,272 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:48:15,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:48:15,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:48:15,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:48:15,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7853b3826176a0fe575c35877885ca2c640283bf6a2200e21b7819452b726d2c [2022-11-26 00:48:15,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:48:15,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:48:15,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:48:15,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:48:15,628 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:48:15,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-26 00:48:19,238 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:48:19,868 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:48:19,869 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-26 00:48:19,906 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur/data/651bd5841/e5c8e9f21b6849af95ae0fd2c953a107/FLAGf6e5d1781 [2022-11-26 00:48:19,926 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur/data/651bd5841/e5c8e9f21b6849af95ae0fd2c953a107 [2022-11-26 00:48:19,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:48:19,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:48:19,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:48:19,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:48:19,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:48:19,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:48:19" (1/1) ... [2022-11-26 00:48:19,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441c14da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:19, skipping insertion in model container [2022-11-26 00:48:19,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:48:19" (1/1) ... [2022-11-26 00:48:19,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:48:20,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:48:20,764 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[28933,28946] [2022-11-26 00:48:20,922 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[50969,50982] [2022-11-26 00:48:21,011 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[58695,58708] [2022-11-26 00:48:21,211 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[83802,83815] [2022-11-26 00:48:21,259 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[98975,98988] [2022-11-26 00:48:21,315 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[115686,115699] [2022-11-26 00:48:21,381 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132053,132066] [2022-11-26 00:48:21,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:48:21,666 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:48:21,785 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[28933,28946] [2022-11-26 00:48:21,843 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[50969,50982] [2022-11-26 00:48:21,867 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[58695,58708] [2022-11-26 00:48:21,946 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[83802,83815] [2022-11-26 00:48:21,993 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[98975,98988] [2022-11-26 00:48:22,045 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[115686,115699] [2022-11-26 00:48:22,092 WARN L237 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_fba42555-ba0b-45d1-be26-9faf57f781d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132053,132066] [2022-11-26 00:48:22,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:48:22,354 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:48:22,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:22 WrapperNode [2022-11-26 00:48:22,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:48:22,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:48:22,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:48:22,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:48:22,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:22" (1/1) ... [2022-11-26 00:48:22,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:22" (1/1) ... [2022-11-26 00:48:22,633 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9191 [2022-11-26 00:48:22,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:48:22,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:48:22,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:48:22,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:48:22,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:22" (1/1) ... [2022-11-26 00:48:22,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:22" (1/1) ... [2022-11-26 00:48:22,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:22" (1/1) ... [2022-11-26 00:48:22,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:22" (1/1) ... [2022-11-26 00:48:22,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:22" (1/1) ... [2022-11-26 00:48:22,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:22" (1/1) ... [2022-11-26 00:48:22,784 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:22" (1/1) ... [2022-11-26 00:48:22,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:22" (1/1) ... [2022-11-26 00:48:22,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:48:22,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:48:22,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:48:22,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:48:22,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:22" (1/1) ... [2022-11-26 00:48:22,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:48:22,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:48:22,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:48:22,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fba42555-ba0b-45d1-be26-9faf57f781d5/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:48:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:48:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:48:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:48:22,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:48:23,434 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:48:23,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:48:29,245 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:48:30,211 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:48:30,211 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:48:30,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:48:30 BoogieIcfgContainer [2022-11-26 00:48:30,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:48:30,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:48:30,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:48:30,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:48:30,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:48:19" (1/3) ... [2022-11-26 00:48:30,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ba452a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:48:30, skipping insertion in model container [2022-11-26 00:48:30,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:22" (2/3) ... [2022-11-26 00:48:30,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ba452a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:48:30, skipping insertion in model container [2022-11-26 00:48:30,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:48:30" (3/3) ... [2022-11-26 00:48:30,229 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-26 00:48:30,254 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:48:30,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-26 00:48:30,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:48:30,398 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a1cd851, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:48:30,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-26 00:48:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 1926 states, 1918 states have (on average 1.802398331595412) internal successors, (3457), 1925 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:30,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-26 00:48:30,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:30,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:48:30,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:48:30,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:30,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1031762117, now seen corresponding path program 1 times [2022-11-26 00:48:30,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:30,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32459410] [2022-11-26 00:48:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:30,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:31,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:31,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32459410] [2022-11-26 00:48:31,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32459410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:31,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:31,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:48:31,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918522507] [2022-11-26 00:48:31,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:31,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:48:31,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:31,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:48:31,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:48:31,280 INFO L87 Difference]: Start difference. First operand has 1926 states, 1918 states have (on average 1.802398331595412) internal successors, (3457), 1925 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:34,286 INFO L93 Difference]: Finished difference Result 3061 states and 5392 transitions. [2022-11-26 00:48:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:48:34,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-26 00:48:34,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:34,315 INFO L225 Difference]: With dead ends: 3061 [2022-11-26 00:48:34,315 INFO L226 Difference]: Without dead ends: 1954 [2022-11-26 00:48:34,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:48:34,329 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 9491 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9491 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:34,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9491 Valid, 1950 Invalid, 1599 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-26 00:48:34,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2022-11-26 00:48:34,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1941. [2022-11-26 00:48:34,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1934 states have (on average 1.31282316442606) internal successors, (2539), 1940 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:34,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2539 transitions. [2022-11-26 00:48:34,612 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2539 transitions. Word has length 63 [2022-11-26 00:48:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:34,614 INFO L495 AbstractCegarLoop]: Abstraction has 1941 states and 2539 transitions. [2022-11-26 00:48:34,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:34,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2539 transitions. [2022-11-26 00:48:34,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-26 00:48:34,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:34,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:48:34,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:48:34,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:48:34,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:34,630 INFO L85 PathProgramCache]: Analyzing trace with hash 505276640, now seen corresponding path program 1 times [2022-11-26 00:48:34,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:34,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382588536] [2022-11-26 00:48:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:34,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:34,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:34,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382588536] [2022-11-26 00:48:34,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382588536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:34,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:34,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:48:34,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570307079] [2022-11-26 00:48:34,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:34,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:48:34,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:34,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:48:34,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:48:34,963 INFO L87 Difference]: Start difference. First operand 1941 states and 2539 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:37,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:37,593 INFO L93 Difference]: Finished difference Result 3913 states and 5187 transitions. [2022-11-26 00:48:37,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:48:37,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-26 00:48:37,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:37,611 INFO L225 Difference]: With dead ends: 3913 [2022-11-26 00:48:37,612 INFO L226 Difference]: Without dead ends: 2630 [2022-11-26 00:48:37,615 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:48:37,620 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 7316 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7316 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:37,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7316 Valid, 1275 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-26 00:48:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2022-11-26 00:48:37,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2624. [2022-11-26 00:48:37,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2624 states, 2617 states have (on average 1.3129537638517386) internal successors, (3436), 2623 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:37,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 3436 transitions. [2022-11-26 00:48:37,869 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 3436 transitions. Word has length 64 [2022-11-26 00:48:37,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:37,870 INFO L495 AbstractCegarLoop]: Abstraction has 2624 states and 3436 transitions. [2022-11-26 00:48:37,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:37,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 3436 transitions. [2022-11-26 00:48:37,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-26 00:48:37,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:37,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:48:37,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:48:37,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:48:37,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:37,897 INFO L85 PathProgramCache]: Analyzing trace with hash 285379470, now seen corresponding path program 1 times [2022-11-26 00:48:37,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:37,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352975632] [2022-11-26 00:48:37,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:37,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:38,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:38,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352975632] [2022-11-26 00:48:38,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352975632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:38,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:38,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:48:38,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561152487] [2022-11-26 00:48:38,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:38,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:48:38,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:38,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:48:38,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:48:38,163 INFO L87 Difference]: Start difference. First operand 2624 states and 3436 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:40,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:40,639 INFO L93 Difference]: Finished difference Result 5369 states and 7049 transitions. [2022-11-26 00:48:40,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:48:40,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-26 00:48:40,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:40,657 INFO L225 Difference]: With dead ends: 5369 [2022-11-26 00:48:40,657 INFO L226 Difference]: Without dead ends: 3528 [2022-11-26 00:48:40,663 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:48:40,668 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 6836 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6836 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:40,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6836 Valid, 1191 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-26 00:48:40,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2022-11-26 00:48:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3514. [2022-11-26 00:48:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3514 states, 3507 states have (on average 1.2959794696321643) internal successors, (4545), 3513 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 4545 transitions. [2022-11-26 00:48:40,901 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 4545 transitions. Word has length 64 [2022-11-26 00:48:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:40,903 INFO L495 AbstractCegarLoop]: Abstraction has 3514 states and 4545 transitions. [2022-11-26 00:48:40,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:40,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 4545 transitions. [2022-11-26 00:48:40,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-26 00:48:40,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:40,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:48:40,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:48:40,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:48:40,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:40,913 INFO L85 PathProgramCache]: Analyzing trace with hash -874930976, now seen corresponding path program 1 times [2022-11-26 00:48:40,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:40,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743333195] [2022-11-26 00:48:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:40,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:41,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:41,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743333195] [2022-11-26 00:48:41,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743333195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:41,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:41,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:48:41,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161521974] [2022-11-26 00:48:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:41,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:48:41,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:41,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:48:41,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:48:41,446 INFO L87 Difference]: Start difference. First operand 3514 states and 4545 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:46,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:46,128 INFO L93 Difference]: Finished difference Result 4102 states and 5321 transitions. [2022-11-26 00:48:46,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:48:46,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-26 00:48:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:46,149 INFO L225 Difference]: With dead ends: 4102 [2022-11-26 00:48:46,149 INFO L226 Difference]: Without dead ends: 4097 [2022-11-26 00:48:46,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:48:46,162 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 6269 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 4912 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 4421 SdHoareTripleChecker+Invalid, 4936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:46,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 4421 Invalid, 4936 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 4912 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-26 00:48:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2022-11-26 00:48:46,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 3514. [2022-11-26 00:48:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3514 states, 3507 states have (on average 1.2956943256344453) internal successors, (4544), 3513 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 4544 transitions. [2022-11-26 00:48:46,438 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 4544 transitions. Word has length 65 [2022-11-26 00:48:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:46,440 INFO L495 AbstractCegarLoop]: Abstraction has 3514 states and 4544 transitions. [2022-11-26 00:48:46,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 4544 transitions. [2022-11-26 00:48:46,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-26 00:48:46,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:46,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:48:46,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:48:46,449 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:48:46,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:46,449 INFO L85 PathProgramCache]: Analyzing trace with hash -428617911, now seen corresponding path program 1 times [2022-11-26 00:48:46,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:46,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798303196] [2022-11-26 00:48:46,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:46,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:47,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:47,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798303196] [2022-11-26 00:48:47,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798303196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:47,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:47,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:48:47,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261954826] [2022-11-26 00:48:47,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:47,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:48:47,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:47,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:48:47,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:48:47,047 INFO L87 Difference]: Start difference. First operand 3514 states and 4544 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:53,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:53,214 INFO L93 Difference]: Finished difference Result 5765 states and 7628 transitions. [2022-11-26 00:48:53,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:48:53,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-26 00:48:53,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:53,237 INFO L225 Difference]: With dead ends: 5765 [2022-11-26 00:48:53,238 INFO L226 Difference]: Without dead ends: 5208 [2022-11-26 00:48:53,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2022-11-26 00:48:53,242 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 5334 mSDsluCounter, 4168 mSDsCounter, 0 mSdLazyCounter, 6271 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5334 SdHoareTripleChecker+Valid, 5151 SdHoareTripleChecker+Invalid, 6279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 6271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:53,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5334 Valid, 5151 Invalid, 6279 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 6271 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-26 00:48:53,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2022-11-26 00:48:53,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 3521. [2022-11-26 00:48:53,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3521 states, 3514 states have (on average 1.2951052931132612) internal successors, (4551), 3520 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3521 states to 3521 states and 4551 transitions. [2022-11-26 00:48:53,595 INFO L78 Accepts]: Start accepts. Automaton has 3521 states and 4551 transitions. Word has length 65 [2022-11-26 00:48:53,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:53,596 INFO L495 AbstractCegarLoop]: Abstraction has 3521 states and 4551 transitions. [2022-11-26 00:48:53,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:48:53,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3521 states and 4551 transitions. [2022-11-26 00:48:53,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-26 00:48:53,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:53,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:48:53,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:48:53,603 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:48:53,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:53,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2016295323, now seen corresponding path program 1 times [2022-11-26 00:48:53,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:53,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373871094] [2022-11-26 00:48:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:53,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:54,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:54,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373871094] [2022-11-26 00:48:54,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373871094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:54,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:54,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 00:48:54,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806740557] [2022-11-26 00:48:54,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:54,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 00:48:54,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:54,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 00:48:54,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:48:54,630 INFO L87 Difference]: Start difference. First operand 3521 states and 4551 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:02,487 INFO L93 Difference]: Finished difference Result 11387 states and 15594 transitions. [2022-11-26 00:49:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-26 00:49:02,487 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-26 00:49:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:02,535 INFO L225 Difference]: With dead ends: 11387 [2022-11-26 00:49:02,535 INFO L226 Difference]: Without dead ends: 11379 [2022-11-26 00:49:02,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=319, Invalid=1241, Unknown=0, NotChecked=0, Total=1560 [2022-11-26 00:49:02,540 INFO L413 NwaCegarLoop]: 2378 mSDtfsCounter, 10406 mSDsluCounter, 16695 mSDsCounter, 0 mSdLazyCounter, 4338 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10406 SdHoareTripleChecker+Valid, 19073 SdHoareTripleChecker+Invalid, 4362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:02,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10406 Valid, 19073 Invalid, 4362 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 4338 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-26 00:49:02,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11379 states. [2022-11-26 00:49:03,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11379 to 3513. [2022-11-26 00:49:03,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3507 states have (on average 1.2954091816367266) internal successors, (4543), 3512 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:03,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4543 transitions. [2022-11-26 00:49:03,322 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4543 transitions. Word has length 66 [2022-11-26 00:49:03,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:03,323 INFO L495 AbstractCegarLoop]: Abstraction has 3513 states and 4543 transitions. [2022-11-26 00:49:03,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:03,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4543 transitions. [2022-11-26 00:49:03,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-26 00:49:03,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:03,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:03,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:49:03,334 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:49:03,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:03,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1740752215, now seen corresponding path program 1 times [2022-11-26 00:49:03,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:49:03,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112730023] [2022-11-26 00:49:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:03,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:49:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:49:03,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:49:03,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112730023] [2022-11-26 00:49:03,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112730023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:49:03,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:49:03,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:49:03,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995476820] [2022-11-26 00:49:03,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:49:03,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:49:03,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:49:03,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:49:03,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:49:03,501 INFO L87 Difference]: Start difference. First operand 3513 states and 4543 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:06,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:06,169 INFO L93 Difference]: Finished difference Result 6785 states and 8783 transitions. [2022-11-26 00:49:06,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:49:06,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-26 00:49:06,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:06,183 INFO L225 Difference]: With dead ends: 6785 [2022-11-26 00:49:06,183 INFO L226 Difference]: Without dead ends: 4521 [2022-11-26 00:49:06,188 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:49:06,189 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 5848 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5848 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:06,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5848 Valid, 1034 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-26 00:49:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2022-11-26 00:49:07,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4511. [2022-11-26 00:49:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4511 states, 4505 states have (on average 1.2894561598224195) internal successors, (5809), 4510 states have internal predecessors, (5809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4511 states to 4511 states and 5809 transitions. [2022-11-26 00:49:07,200 INFO L78 Accepts]: Start accepts. Automaton has 4511 states and 5809 transitions. Word has length 66 [2022-11-26 00:49:07,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:07,201 INFO L495 AbstractCegarLoop]: Abstraction has 4511 states and 5809 transitions. [2022-11-26 00:49:07,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:07,202 INFO L276 IsEmpty]: Start isEmpty. Operand 4511 states and 5809 transitions. [2022-11-26 00:49:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-26 00:49:07,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:07,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:07,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:49:07,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:49:07,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:07,215 INFO L85 PathProgramCache]: Analyzing trace with hash -167816723, now seen corresponding path program 1 times [2022-11-26 00:49:07,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:49:07,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719056739] [2022-11-26 00:49:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:07,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:49:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:49:08,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:49:08,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719056739] [2022-11-26 00:49:08,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719056739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:49:08,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:49:08,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 00:49:08,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732575442] [2022-11-26 00:49:08,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:49:08,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 00:49:08,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:49:08,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 00:49:08,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:49:08,119 INFO L87 Difference]: Start difference. First operand 4511 states and 5809 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:17,594 INFO L93 Difference]: Finished difference Result 13997 states and 19053 transitions. [2022-11-26 00:49:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-26 00:49:17,594 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-26 00:49:17,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:17,630 INFO L225 Difference]: With dead ends: 13997 [2022-11-26 00:49:17,630 INFO L226 Difference]: Without dead ends: 13119 [2022-11-26 00:49:17,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2022-11-26 00:49:17,636 INFO L413 NwaCegarLoop]: 2050 mSDtfsCounter, 8831 mSDsluCounter, 14295 mSDsCounter, 0 mSdLazyCounter, 3554 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8831 SdHoareTripleChecker+Valid, 16345 SdHoareTripleChecker+Invalid, 3578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:17,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8831 Valid, 16345 Invalid, 3578 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 3554 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-26 00:49:17,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13119 states. [2022-11-26 00:49:18,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13119 to 4451. [2022-11-26 00:49:18,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 4446 states have (on average 1.2878992352676564) internal successors, (5726), 4450 states have internal predecessors, (5726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:18,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 5726 transitions. [2022-11-26 00:49:18,532 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 5726 transitions. Word has length 66 [2022-11-26 00:49:18,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:18,533 INFO L495 AbstractCegarLoop]: Abstraction has 4451 states and 5726 transitions. [2022-11-26 00:49:18,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:18,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 5726 transitions. [2022-11-26 00:49:18,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-26 00:49:18,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:18,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:18,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:49:18,541 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:49:18,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:18,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1849785436, now seen corresponding path program 1 times [2022-11-26 00:49:18,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:49:18,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025040946] [2022-11-26 00:49:18,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:18,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:49:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:49:19,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:49:19,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025040946] [2022-11-26 00:49:19,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025040946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:49:19,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:49:19,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:49:19,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643784825] [2022-11-26 00:49:19,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:49:19,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:49:19,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:49:19,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:49:19,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:49:19,008 INFO L87 Difference]: Start difference. First operand 4451 states and 5726 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:26,691 INFO L93 Difference]: Finished difference Result 8242 states and 10955 transitions. [2022-11-26 00:49:26,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-26 00:49:26,692 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-26 00:49:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:26,710 INFO L225 Difference]: With dead ends: 8242 [2022-11-26 00:49:26,711 INFO L226 Difference]: Without dead ends: 7389 [2022-11-26 00:49:26,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:49:26,715 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 6494 mSDsluCounter, 4057 mSDsCounter, 0 mSdLazyCounter, 5171 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6494 SdHoareTripleChecker+Valid, 5051 SdHoareTripleChecker+Invalid, 5200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:26,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6494 Valid, 5051 Invalid, 5200 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 5171 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-26 00:49:26,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7389 states. [2022-11-26 00:49:27,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7389 to 4420. [2022-11-26 00:49:27,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4415 states have (on average 1.2874292185730465) internal successors, (5684), 4419 states have internal predecessors, (5684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 5684 transitions. [2022-11-26 00:49:27,756 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 5684 transitions. Word has length 67 [2022-11-26 00:49:27,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:27,756 INFO L495 AbstractCegarLoop]: Abstraction has 4420 states and 5684 transitions. [2022-11-26 00:49:27,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 5684 transitions. [2022-11-26 00:49:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-26 00:49:27,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:27,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:27,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:49:27,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:49:27,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:27,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2035786332, now seen corresponding path program 1 times [2022-11-26 00:49:27,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:49:27,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918552069] [2022-11-26 00:49:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:27,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:49:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:49:28,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:49:28,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918552069] [2022-11-26 00:49:28,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918552069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:49:28,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:49:28,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:49:28,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128894926] [2022-11-26 00:49:28,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:49:28,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:49:28,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:49:28,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:49:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:49:28,095 INFO L87 Difference]: Start difference. First operand 4420 states and 5684 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:33,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:33,972 INFO L93 Difference]: Finished difference Result 6292 states and 8168 transitions. [2022-11-26 00:49:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:49:33,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-26 00:49:33,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:33,984 INFO L225 Difference]: With dead ends: 6292 [2022-11-26 00:49:33,984 INFO L226 Difference]: Without dead ends: 6284 [2022-11-26 00:49:33,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:49:33,987 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 5020 mSDsluCounter, 3093 mSDsCounter, 0 mSdLazyCounter, 4459 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5020 SdHoareTripleChecker+Valid, 3943 SdHoareTripleChecker+Invalid, 4490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:33,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5020 Valid, 3943 Invalid, 4490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4459 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-26 00:49:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6284 states. [2022-11-26 00:49:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6284 to 4420. [2022-11-26 00:49:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4415 states have (on average 1.287202718006795) internal successors, (5683), 4419 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 5683 transitions. [2022-11-26 00:49:35,244 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 5683 transitions. Word has length 68 [2022-11-26 00:49:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:35,245 INFO L495 AbstractCegarLoop]: Abstraction has 4420 states and 5683 transitions. [2022-11-26 00:49:35,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:35,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 5683 transitions. [2022-11-26 00:49:35,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-26 00:49:35,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:35,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:35,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:49:35,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:49:35,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1784891832, now seen corresponding path program 1 times [2022-11-26 00:49:35,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:49:35,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416352392] [2022-11-26 00:49:35,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:35,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:49:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:49:36,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:49:36,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416352392] [2022-11-26 00:49:36,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416352392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:49:36,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:49:36,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 00:49:36,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033492514] [2022-11-26 00:49:36,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:49:36,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 00:49:36,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:49:36,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 00:49:36,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:49:36,350 INFO L87 Difference]: Start difference. First operand 4420 states and 5683 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:48,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:48,067 INFO L93 Difference]: Finished difference Result 12888 states and 17319 transitions. [2022-11-26 00:49:48,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-26 00:49:48,068 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-26 00:49:48,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:48,083 INFO L225 Difference]: With dead ends: 12888 [2022-11-26 00:49:48,084 INFO L226 Difference]: Without dead ends: 12032 [2022-11-26 00:49:48,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2022-11-26 00:49:48,089 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8824 mSDsluCounter, 10295 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8824 SdHoareTripleChecker+Valid, 11918 SdHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:48,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8824 Valid, 11918 Invalid, 2421 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-26 00:49:48,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12032 states. [2022-11-26 00:49:49,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12032 to 4430. [2022-11-26 00:49:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4430 states, 4425 states have (on average 1.287231638418079) internal successors, (5696), 4429 states have internal predecessors, (5696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:49,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 5696 transitions. [2022-11-26 00:49:49,626 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 5696 transitions. Word has length 68 [2022-11-26 00:49:49,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:49,627 INFO L495 AbstractCegarLoop]: Abstraction has 4430 states and 5696 transitions. [2022-11-26 00:49:49,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:49,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 5696 transitions. [2022-11-26 00:49:49,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-26 00:49:49,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:49,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:49,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:49:49,635 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:49:49,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:49,636 INFO L85 PathProgramCache]: Analyzing trace with hash -541441223, now seen corresponding path program 1 times [2022-11-26 00:49:49,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:49:49,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19208409] [2022-11-26 00:49:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:49,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:49:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:49:49,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:49:49,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19208409] [2022-11-26 00:49:49,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19208409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:49:49,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:49:49,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:49:49,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791313771] [2022-11-26 00:49:49,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:49:49,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:49:49,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:49:49,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:49:49,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:49:49,929 INFO L87 Difference]: Start difference. First operand 4430 states and 5696 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:56,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:56,642 INFO L93 Difference]: Finished difference Result 7474 states and 9914 transitions. [2022-11-26 00:49:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:49:56,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-26 00:49:56,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:56,651 INFO L225 Difference]: With dead ends: 7474 [2022-11-26 00:49:56,651 INFO L226 Difference]: Without dead ends: 6648 [2022-11-26 00:49:56,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:49:56,654 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 6040 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 3719 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6040 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 3738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:56,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6040 Valid, 3429 Invalid, 3738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 3719 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-26 00:49:56,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6648 states. [2022-11-26 00:49:58,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6648 to 4430. [2022-11-26 00:49:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4430 states, 4425 states have (on average 1.286779661016949) internal successors, (5694), 4429 states have internal predecessors, (5694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 5694 transitions. [2022-11-26 00:49:58,124 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 5694 transitions. Word has length 69 [2022-11-26 00:49:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:58,124 INFO L495 AbstractCegarLoop]: Abstraction has 4430 states and 5694 transitions. [2022-11-26 00:49:58,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:49:58,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 5694 transitions. [2022-11-26 00:49:58,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-26 00:49:58,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:58,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:58,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 00:49:58,133 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:49:58,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:58,134 INFO L85 PathProgramCache]: Analyzing trace with hash -463393113, now seen corresponding path program 1 times [2022-11-26 00:49:58,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:49:58,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482383027] [2022-11-26 00:49:58,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:58,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:49:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:49:59,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:49:59,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482383027] [2022-11-26 00:49:59,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482383027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:49:59,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:49:59,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-26 00:49:59,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620242154] [2022-11-26 00:49:59,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:49:59,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 00:49:59,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:49:59,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 00:49:59,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:49:59,137 INFO L87 Difference]: Start difference. First operand 4430 states and 5694 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:13,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:13,879 INFO L93 Difference]: Finished difference Result 12056 states and 16258 transitions. [2022-11-26 00:50:13,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-26 00:50:13,880 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-26 00:50:13,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:13,896 INFO L225 Difference]: With dead ends: 12056 [2022-11-26 00:50:13,896 INFO L226 Difference]: Without dead ends: 12045 [2022-11-26 00:50:13,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=345, Invalid=1215, Unknown=0, NotChecked=0, Total=1560 [2022-11-26 00:50:13,899 INFO L413 NwaCegarLoop]: 2057 mSDtfsCounter, 12404 mSDsluCounter, 12833 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12404 SdHoareTripleChecker+Valid, 14890 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:13,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12404 Valid, 14890 Invalid, 2887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-26 00:50:13,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12045 states. [2022-11-26 00:50:15,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12045 to 4424. [2022-11-26 00:50:15,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4419 states have (on average 1.2869427472278796) internal successors, (5687), 4423 states have internal predecessors, (5687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:15,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 5687 transitions. [2022-11-26 00:50:15,746 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 5687 transitions. Word has length 69 [2022-11-26 00:50:15,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:15,747 INFO L495 AbstractCegarLoop]: Abstraction has 4424 states and 5687 transitions. [2022-11-26 00:50:15,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:15,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 5687 transitions. [2022-11-26 00:50:15,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-26 00:50:15,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:15,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:15,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 00:50:15,755 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:50:15,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:15,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1882503663, now seen corresponding path program 1 times [2022-11-26 00:50:15,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:15,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893694735] [2022-11-26 00:50:15,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:15,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:15,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:15,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893694735] [2022-11-26 00:50:15,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893694735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:15,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:15,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:50:15,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318144835] [2022-11-26 00:50:15,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:15,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:50:15,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:15,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:50:15,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:15,841 INFO L87 Difference]: Start difference. First operand 4424 states and 5687 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:18,768 INFO L93 Difference]: Finished difference Result 8538 states and 11059 transitions. [2022-11-26 00:50:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:50:18,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-26 00:50:18,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:18,775 INFO L225 Difference]: With dead ends: 8538 [2022-11-26 00:50:18,775 INFO L226 Difference]: Without dead ends: 5246 [2022-11-26 00:50:18,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:18,781 INFO L413 NwaCegarLoop]: 1404 mSDtfsCounter, 1406 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:18,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 1856 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:50:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5246 states. [2022-11-26 00:50:21,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5246 to 5236. [2022-11-26 00:50:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5236 states, 5232 states have (on average 1.2813455657492354) internal successors, (6704), 5235 states have internal predecessors, (6704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:21,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5236 states to 5236 states and 6704 transitions. [2022-11-26 00:50:21,322 INFO L78 Accepts]: Start accepts. Automaton has 5236 states and 6704 transitions. Word has length 69 [2022-11-26 00:50:21,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:21,322 INFO L495 AbstractCegarLoop]: Abstraction has 5236 states and 6704 transitions. [2022-11-26 00:50:21,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:21,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5236 states and 6704 transitions. [2022-11-26 00:50:21,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-26 00:50:21,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:21,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:21,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:50:21,329 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:50:21,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:21,330 INFO L85 PathProgramCache]: Analyzing trace with hash 594946586, now seen corresponding path program 1 times [2022-11-26 00:50:21,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:21,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580401207] [2022-11-26 00:50:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:21,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:21,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:21,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580401207] [2022-11-26 00:50:21,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580401207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:21,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:21,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:50:21,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460043328] [2022-11-26 00:50:21,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:21,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:50:21,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:21,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:50:21,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:21,403 INFO L87 Difference]: Start difference. First operand 5236 states and 6704 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:24,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:24,681 INFO L93 Difference]: Finished difference Result 7957 states and 10392 transitions. [2022-11-26 00:50:24,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:50:24,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-26 00:50:24,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:24,688 INFO L225 Difference]: With dead ends: 7957 [2022-11-26 00:50:24,688 INFO L226 Difference]: Without dead ends: 4803 [2022-11-26 00:50:24,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:50:24,693 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 1069 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:24,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 1496 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:50:24,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2022-11-26 00:50:27,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 4799. [2022-11-26 00:50:27,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4799 states, 4797 states have (on average 1.2972691265374192) internal successors, (6223), 4798 states have internal predecessors, (6223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4799 states to 4799 states and 6223 transitions. [2022-11-26 00:50:27,457 INFO L78 Accepts]: Start accepts. Automaton has 4799 states and 6223 transitions. Word has length 69 [2022-11-26 00:50:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:27,458 INFO L495 AbstractCegarLoop]: Abstraction has 4799 states and 6223 transitions. [2022-11-26 00:50:27,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:27,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4799 states and 6223 transitions. [2022-11-26 00:50:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-26 00:50:27,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:27,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:27,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-26 00:50:27,465 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:50:27,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:27,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2125971745, now seen corresponding path program 1 times [2022-11-26 00:50:27,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:27,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704989693] [2022-11-26 00:50:27,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:27,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:27,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:27,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704989693] [2022-11-26 00:50:27,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704989693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:27,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:27,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:50:27,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118025796] [2022-11-26 00:50:27,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:27,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:50:27,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:27,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:50:27,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:50:27,644 INFO L87 Difference]: Start difference. First operand 4799 states and 6223 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:33,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:33,577 INFO L93 Difference]: Finished difference Result 8652 states and 11691 transitions. [2022-11-26 00:50:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:50:33,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-26 00:50:33,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:33,588 INFO L225 Difference]: With dead ends: 8652 [2022-11-26 00:50:33,588 INFO L226 Difference]: Without dead ends: 6438 [2022-11-26 00:50:33,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:50:33,592 INFO L413 NwaCegarLoop]: 1184 mSDtfsCounter, 2123 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:33,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 1861 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:50:33,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6438 states. [2022-11-26 00:50:37,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6438 to 5521. [2022-11-26 00:50:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5521 states, 5519 states have (on average 1.3399166515673129) internal successors, (7395), 5520 states have internal predecessors, (7395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:37,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5521 states to 5521 states and 7395 transitions. [2022-11-26 00:50:37,970 INFO L78 Accepts]: Start accepts. Automaton has 5521 states and 7395 transitions. Word has length 69 [2022-11-26 00:50:37,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:37,971 INFO L495 AbstractCegarLoop]: Abstraction has 5521 states and 7395 transitions. [2022-11-26 00:50:37,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 5521 states and 7395 transitions. [2022-11-26 00:50:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-26 00:50:37,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:37,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:37,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 00:50:37,978 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:50:37,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:37,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1302640947, now seen corresponding path program 1 times [2022-11-26 00:50:37,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:37,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568191461] [2022-11-26 00:50:37,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:37,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:38,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:38,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568191461] [2022-11-26 00:50:38,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568191461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:38,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:38,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 00:50:38,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361013864] [2022-11-26 00:50:38,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:38,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:50:38,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:38,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:50:38,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:50:38,435 INFO L87 Difference]: Start difference. First operand 5521 states and 7395 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:47,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:50:47,889 INFO L93 Difference]: Finished difference Result 7310 states and 9760 transitions. [2022-11-26 00:50:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-26 00:50:47,889 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-26 00:50:47,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:50:47,897 INFO L225 Difference]: With dead ends: 7310 [2022-11-26 00:50:47,897 INFO L226 Difference]: Without dead ends: 6602 [2022-11-26 00:50:47,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2022-11-26 00:50:47,900 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 5391 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 3681 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5391 SdHoareTripleChecker+Valid, 3273 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:50:47,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5391 Valid, 3273 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3681 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-26 00:50:47,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6602 states. [2022-11-26 00:50:52,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6602 to 5529. [2022-11-26 00:50:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5529 states, 5527 states have (on average 1.34014836258368) internal successors, (7407), 5528 states have internal predecessors, (7407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 7407 transitions. [2022-11-26 00:50:52,282 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 7407 transitions. Word has length 70 [2022-11-26 00:50:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:50:52,282 INFO L495 AbstractCegarLoop]: Abstraction has 5529 states and 7407 transitions. [2022-11-26 00:50:52,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:50:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 7407 transitions. [2022-11-26 00:50:52,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-26 00:50:52,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:50:52,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:50:52,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-26 00:50:52,288 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:50:52,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:50:52,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1337543172, now seen corresponding path program 1 times [2022-11-26 00:50:52,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:50:52,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284255797] [2022-11-26 00:50:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:52,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:50:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:52,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:52,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:50:52,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284255797] [2022-11-26 00:50:52,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284255797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:50:52,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:50:52,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 00:50:52,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307230914] [2022-11-26 00:50:52,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:50:52,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:50:52,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:50:52,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:50:52,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:50:52,739 INFO L87 Difference]: Start difference. First operand 5529 states and 7407 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:06,658 INFO L93 Difference]: Finished difference Result 10892 states and 14532 transitions. [2022-11-26 00:51:06,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-26 00:51:06,659 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-26 00:51:06,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:06,672 INFO L225 Difference]: With dead ends: 10892 [2022-11-26 00:51:06,672 INFO L226 Difference]: Without dead ends: 10174 [2022-11-26 00:51:06,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2022-11-26 00:51:06,676 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 5192 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 4006 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5192 SdHoareTripleChecker+Valid, 3344 SdHoareTripleChecker+Invalid, 4071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 4006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:06,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5192 Valid, 3344 Invalid, 4071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 4006 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-26 00:51:06,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10174 states. [2022-11-26 00:51:11,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10174 to 5529. [2022-11-26 00:51:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5529 states, 5527 states have (on average 1.3399674326035824) internal successors, (7406), 5528 states have internal predecessors, (7406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:11,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 7406 transitions. [2022-11-26 00:51:11,245 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 7406 transitions. Word has length 70 [2022-11-26 00:51:11,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:11,245 INFO L495 AbstractCegarLoop]: Abstraction has 5529 states and 7406 transitions. [2022-11-26 00:51:11,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:11,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 7406 transitions. [2022-11-26 00:51:11,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-26 00:51:11,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:11,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:11,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-26 00:51:11,252 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:51:11,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:11,253 INFO L85 PathProgramCache]: Analyzing trace with hash -30289550, now seen corresponding path program 1 times [2022-11-26 00:51:11,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:11,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746076155] [2022-11-26 00:51:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:11,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:11,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:11,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746076155] [2022-11-26 00:51:11,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746076155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:11,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:11,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:51:11,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373552419] [2022-11-26 00:51:11,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:11,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:51:11,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:11,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:51:11,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:51:11,602 INFO L87 Difference]: Start difference. First operand 5529 states and 7406 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:24,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:24,375 INFO L93 Difference]: Finished difference Result 10480 states and 14172 transitions. [2022-11-26 00:51:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:51:24,376 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-26 00:51:24,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:24,387 INFO L225 Difference]: With dead ends: 10480 [2022-11-26 00:51:24,387 INFO L226 Difference]: Without dead ends: 9184 [2022-11-26 00:51:24,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:51:24,390 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 3939 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 3290 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3939 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:24,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3939 Valid, 3178 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 3290 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-26 00:51:24,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9184 states. [2022-11-26 00:51:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9184 to 5529. [2022-11-26 00:51:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5529 states, 5527 states have (on average 1.3397865026234848) internal successors, (7405), 5528 states have internal predecessors, (7405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 7405 transitions. [2022-11-26 00:51:29,119 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 7405 transitions. Word has length 70 [2022-11-26 00:51:29,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:29,120 INFO L495 AbstractCegarLoop]: Abstraction has 5529 states and 7405 transitions. [2022-11-26 00:51:29,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:29,120 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 7405 transitions. [2022-11-26 00:51:29,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-26 00:51:29,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:29,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:29,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-26 00:51:29,125 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:51:29,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:29,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1966113785, now seen corresponding path program 1 times [2022-11-26 00:51:29,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:29,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144176049] [2022-11-26 00:51:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:29,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:29,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:29,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144176049] [2022-11-26 00:51:29,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144176049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:29,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:29,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:51:29,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581231441] [2022-11-26 00:51:29,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:29,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:51:29,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:29,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:51:29,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:51:29,264 INFO L87 Difference]: Start difference. First operand 5529 states and 7405 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:36,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:36,799 INFO L93 Difference]: Finished difference Result 10029 states and 13856 transitions. [2022-11-26 00:51:36,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:51:36,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-26 00:51:36,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:36,810 INFO L225 Difference]: With dead ends: 10029 [2022-11-26 00:51:36,810 INFO L226 Difference]: Without dead ends: 7579 [2022-11-26 00:51:36,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:51:36,814 INFO L413 NwaCegarLoop]: 1110 mSDtfsCounter, 590 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:36,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1593 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:51:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7579 states. [2022-11-26 00:51:43,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7579 to 7085. [2022-11-26 00:51:43,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7085 states, 7083 states have (on average 1.3514047719892701) internal successors, (9572), 7084 states have internal predecessors, (9572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7085 states to 7085 states and 9572 transitions. [2022-11-26 00:51:43,663 INFO L78 Accepts]: Start accepts. Automaton has 7085 states and 9572 transitions. Word has length 70 [2022-11-26 00:51:43,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:43,663 INFO L495 AbstractCegarLoop]: Abstraction has 7085 states and 9572 transitions. [2022-11-26 00:51:43,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:43,664 INFO L276 IsEmpty]: Start isEmpty. Operand 7085 states and 9572 transitions. [2022-11-26 00:51:43,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-26 00:51:43,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:43,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:43,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-26 00:51:43,670 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:51:43,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:43,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1395696457, now seen corresponding path program 1 times [2022-11-26 00:51:43,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:43,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443567584] [2022-11-26 00:51:43,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:43,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:51:43,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:43,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443567584] [2022-11-26 00:51:43,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443567584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:43,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:51:43,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:51:43,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890072902] [2022-11-26 00:51:43,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:43,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:51:43,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:43,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:51:43,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:51:43,746 INFO L87 Difference]: Start difference. First operand 7085 states and 9572 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:51:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:55,848 INFO L93 Difference]: Finished difference Result 13904 states and 19188 transitions. [2022-11-26 00:51:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:51:55,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-26 00:51:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:55,861 INFO L225 Difference]: With dead ends: 13904 [2022-11-26 00:51:55,861 INFO L226 Difference]: Without dead ends: 9652 [2022-11-26 00:51:55,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:51:55,866 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 665 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:55,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1503 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:51:55,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9652 states. [2022-11-26 00:52:07,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9652 to 9650. [2022-11-26 00:52:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9650 states, 9648 states have (on average 1.3565505804311775) internal successors, (13088), 9649 states have internal predecessors, (13088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:52:07,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9650 states to 9650 states and 13088 transitions. [2022-11-26 00:52:07,157 INFO L78 Accepts]: Start accepts. Automaton has 9650 states and 13088 transitions. Word has length 71 [2022-11-26 00:52:07,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:52:07,157 INFO L495 AbstractCegarLoop]: Abstraction has 9650 states and 13088 transitions. [2022-11-26 00:52:07,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:52:07,157 INFO L276 IsEmpty]: Start isEmpty. Operand 9650 states and 13088 transitions. [2022-11-26 00:52:07,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-26 00:52:07,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:52:07,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:52:07,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-26 00:52:07,162 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:52:07,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:52:07,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1484957772, now seen corresponding path program 1 times [2022-11-26 00:52:07,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:52:07,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859100431] [2022-11-26 00:52:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:52:07,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:52:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:52:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:52:07,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:52:07,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859100431] [2022-11-26 00:52:07,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859100431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:52:07,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:52:07,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:52:07,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948644627] [2022-11-26 00:52:07,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:52:07,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:52:07,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:52:07,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:52:07,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:52:07,235 INFO L87 Difference]: Start difference. First operand 9650 states and 13088 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:52:21,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:52:21,103 INFO L93 Difference]: Finished difference Result 14689 states and 20093 transitions. [2022-11-26 00:52:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:52:21,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-26 00:52:21,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:52:21,121 INFO L225 Difference]: With dead ends: 14689 [2022-11-26 00:52:21,122 INFO L226 Difference]: Without dead ends: 11926 [2022-11-26 00:52:21,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:52:21,127 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 598 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:52:21,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1515 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:52:21,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11926 states. [2022-11-26 00:52:34,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11926 to 10252. [2022-11-26 00:52:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10252 states, 10250 states have (on average 1.3607804878048781) internal successors, (13948), 10251 states have internal predecessors, (13948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:52:35,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10252 states to 10252 states and 13948 transitions. [2022-11-26 00:52:35,005 INFO L78 Accepts]: Start accepts. Automaton has 10252 states and 13948 transitions. Word has length 71 [2022-11-26 00:52:35,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:52:35,005 INFO L495 AbstractCegarLoop]: Abstraction has 10252 states and 13948 transitions. [2022-11-26 00:52:35,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:52:35,005 INFO L276 IsEmpty]: Start isEmpty. Operand 10252 states and 13948 transitions. [2022-11-26 00:52:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-26 00:52:35,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:52:35,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:52:35,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-26 00:52:35,009 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:52:35,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:52:35,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1208387843, now seen corresponding path program 1 times [2022-11-26 00:52:35,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:52:35,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876390031] [2022-11-26 00:52:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:52:35,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:52:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:52:35,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:52:35,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:52:35,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876390031] [2022-11-26 00:52:35,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876390031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:52:35,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:52:35,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:52:35,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862020052] [2022-11-26 00:52:35,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:52:35,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:52:35,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:52:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:52:35,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:52:35,085 INFO L87 Difference]: Start difference. First operand 10252 states and 13948 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:52:53,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:52:53,401 INFO L93 Difference]: Finished difference Result 20435 states and 27805 transitions. [2022-11-26 00:52:53,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:52:53,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-26 00:52:53,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:52:53,423 INFO L225 Difference]: With dead ends: 20435 [2022-11-26 00:52:53,423 INFO L226 Difference]: Without dead ends: 13857 [2022-11-26 00:52:53,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:52:53,429 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 649 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:52:53,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1869 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:52:53,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13857 states. [2022-11-26 00:53:12,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13857 to 13855. [2022-11-26 00:53:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13855 states, 13853 states have (on average 1.335378618349816) internal successors, (18499), 13854 states have internal predecessors, (18499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:12,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13855 states to 13855 states and 18499 transitions. [2022-11-26 00:53:12,403 INFO L78 Accepts]: Start accepts. Automaton has 13855 states and 18499 transitions. Word has length 71 [2022-11-26 00:53:12,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:53:12,403 INFO L495 AbstractCegarLoop]: Abstraction has 13855 states and 18499 transitions. [2022-11-26 00:53:12,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:12,403 INFO L276 IsEmpty]: Start isEmpty. Operand 13855 states and 18499 transitions. [2022-11-26 00:53:12,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-26 00:53:12,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:53:12,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:53:12,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-26 00:53:12,407 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:53:12,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:53:12,407 INFO L85 PathProgramCache]: Analyzing trace with hash 38986714, now seen corresponding path program 1 times [2022-11-26 00:53:12,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:53:12,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352604841] [2022-11-26 00:53:12,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:53:12,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:53:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:53:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:12,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:53:12,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352604841] [2022-11-26 00:53:12,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352604841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:53:12,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:53:12,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:53:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240652971] [2022-11-26 00:53:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:53:12,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:53:12,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:53:12,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:53:12,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:53:12,677 INFO L87 Difference]: Start difference. First operand 13855 states and 18499 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:53:38,393 INFO L93 Difference]: Finished difference Result 18276 states and 24182 transitions. [2022-11-26 00:53:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:53:38,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-26 00:53:38,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:53:38,418 INFO L225 Difference]: With dead ends: 18276 [2022-11-26 00:53:38,418 INFO L226 Difference]: Without dead ends: 17423 [2022-11-26 00:53:38,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:53:38,423 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 4123 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4123 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 2352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:53:38,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4123 Valid, 2197 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-26 00:53:38,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17423 states. [2022-11-26 00:53:56,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17423 to 13854. [2022-11-26 00:53:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13854 states, 13852 states have (on average 1.3353306381749928) internal successors, (18497), 13853 states have internal predecessors, (18497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13854 states to 13854 states and 18497 transitions. [2022-11-26 00:53:56,453 INFO L78 Accepts]: Start accepts. Automaton has 13854 states and 18497 transitions. Word has length 71 [2022-11-26 00:53:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:53:56,454 INFO L495 AbstractCegarLoop]: Abstraction has 13854 states and 18497 transitions. [2022-11-26 00:53:56,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 13854 states and 18497 transitions. [2022-11-26 00:53:56,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-26 00:53:56,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:53:56,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:53:56,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-26 00:53:56,458 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:53:56,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:53:56,459 INFO L85 PathProgramCache]: Analyzing trace with hash -215376208, now seen corresponding path program 1 times [2022-11-26 00:53:56,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:53:56,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768983698] [2022-11-26 00:53:56,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:53:56,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:53:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:53:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:56,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:53:56,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768983698] [2022-11-26 00:53:56,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768983698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:53:56,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:53:56,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:53:56,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567363195] [2022-11-26 00:53:56,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:53:56,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:53:56,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:53:56,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:53:56,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:53:56,727 INFO L87 Difference]: Start difference. First operand 13854 states and 18497 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:23,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:23,267 INFO L93 Difference]: Finished difference Result 18198 states and 23901 transitions. [2022-11-26 00:54:23,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:54:23,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-26 00:54:23,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:23,289 INFO L225 Difference]: With dead ends: 18198 [2022-11-26 00:54:23,289 INFO L226 Difference]: Without dead ends: 17334 [2022-11-26 00:54:23,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:54:23,293 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 2656 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2656 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:23,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2656 Valid, 2152 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-26 00:54:23,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17334 states. [2022-11-26 00:54:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17334 to 13854. [2022-11-26 00:54:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13854 states, 13852 states have (on average 1.335258446433728) internal successors, (18496), 13853 states have internal predecessors, (18496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13854 states to 13854 states and 18496 transitions. [2022-11-26 00:54:40,384 INFO L78 Accepts]: Start accepts. Automaton has 13854 states and 18496 transitions. Word has length 71 [2022-11-26 00:54:40,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:40,385 INFO L495 AbstractCegarLoop]: Abstraction has 13854 states and 18496 transitions. [2022-11-26 00:54:40,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:40,385 INFO L276 IsEmpty]: Start isEmpty. Operand 13854 states and 18496 transitions. [2022-11-26 00:54:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-26 00:54:40,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:40,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:40,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-26 00:54:40,390 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:54:40,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:40,391 INFO L85 PathProgramCache]: Analyzing trace with hash -467871479, now seen corresponding path program 1 times [2022-11-26 00:54:40,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:40,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051435248] [2022-11-26 00:54:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:40,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:40,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:40,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051435248] [2022-11-26 00:54:40,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051435248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:54:40,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:54:40,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:54:40,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899088746] [2022-11-26 00:54:40,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:54:40,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:54:40,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:40,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:54:40,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:54:40,864 INFO L87 Difference]: Start difference. First operand 13854 states and 18496 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:17,025 INFO L93 Difference]: Finished difference Result 25854 states and 34215 transitions. [2022-11-26 00:55:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-26 00:55:17,026 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-26 00:55:17,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:17,060 INFO L225 Difference]: With dead ends: 25854 [2022-11-26 00:55:17,060 INFO L226 Difference]: Without dead ends: 24070 [2022-11-26 00:55:17,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:55:17,066 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 4082 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4082 SdHoareTripleChecker+Valid, 3425 SdHoareTripleChecker+Invalid, 3566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:17,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4082 Valid, 3425 Invalid, 3566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-26 00:55:17,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24070 states. [2022-11-26 00:55:35,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24070 to 13818. [2022-11-26 00:55:35,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13818 states, 13816 states have (on average 1.3353358425014477) internal successors, (18449), 13817 states have internal predecessors, (18449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13818 states to 13818 states and 18449 transitions. [2022-11-26 00:55:35,314 INFO L78 Accepts]: Start accepts. Automaton has 13818 states and 18449 transitions. Word has length 72 [2022-11-26 00:55:35,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:35,315 INFO L495 AbstractCegarLoop]: Abstraction has 13818 states and 18449 transitions. [2022-11-26 00:55:35,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:55:35,316 INFO L276 IsEmpty]: Start isEmpty. Operand 13818 states and 18449 transitions. [2022-11-26 00:55:35,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-26 00:55:35,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:35,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:55:35,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-26 00:55:35,320 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:55:35,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:35,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1479892977, now seen corresponding path program 1 times [2022-11-26 00:55:35,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:35,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432431299] [2022-11-26 00:55:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:35,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:36,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:36,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432431299] [2022-11-26 00:55:36,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432431299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:55:36,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:55:36,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 00:55:36,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130443776] [2022-11-26 00:55:36,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:55:36,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 00:55:36,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:36,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 00:55:36,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:55:36,015 INFO L87 Difference]: Start difference. First operand 13818 states and 18449 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:56:26,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:56:26,750 INFO L93 Difference]: Finished difference Result 33110 states and 44157 transitions. [2022-11-26 00:56:26,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-26 00:56:26,751 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-26 00:56:26,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:56:26,808 INFO L225 Difference]: With dead ends: 33110 [2022-11-26 00:56:26,808 INFO L226 Difference]: Without dead ends: 32662 [2022-11-26 00:56:26,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2022-11-26 00:56:26,816 INFO L413 NwaCegarLoop]: 1067 mSDtfsCounter, 5599 mSDsluCounter, 8148 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5599 SdHoareTripleChecker+Valid, 9215 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:56:26,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5599 Valid, 9215 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-26 00:56:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32662 states. [2022-11-26 00:56:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32662 to 13780. [2022-11-26 00:56:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13780 states, 13778 states have (on average 1.3356800696762956) internal successors, (18403), 13779 states have internal predecessors, (18403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:56:42,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13780 states to 13780 states and 18403 transitions. [2022-11-26 00:56:42,433 INFO L78 Accepts]: Start accepts. Automaton has 13780 states and 18403 transitions. Word has length 72 [2022-11-26 00:56:42,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:56:42,433 INFO L495 AbstractCegarLoop]: Abstraction has 13780 states and 18403 transitions. [2022-11-26 00:56:42,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:56:42,434 INFO L276 IsEmpty]: Start isEmpty. Operand 13780 states and 18403 transitions. [2022-11-26 00:56:42,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-26 00:56:42,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:56:42,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:56:42,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-26 00:56:42,437 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:56:42,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:56:42,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1214563715, now seen corresponding path program 1 times [2022-11-26 00:56:42,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:56:42,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573183684] [2022-11-26 00:56:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:42,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:56:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:56:42,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:56:42,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573183684] [2022-11-26 00:56:42,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573183684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:56:42,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:56:42,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:56:42,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181007351] [2022-11-26 00:56:42,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:56:42,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:56:42,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:56:42,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:56:42,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:56:42,496 INFO L87 Difference]: Start difference. First operand 13780 states and 18403 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:57:00,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:00,729 INFO L93 Difference]: Finished difference Result 26854 states and 36042 transitions. [2022-11-26 00:57:00,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:57:00,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-26 00:57:00,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:00,751 INFO L225 Difference]: With dead ends: 26854 [2022-11-26 00:57:00,752 INFO L226 Difference]: Without dead ends: 14511 [2022-11-26 00:57:00,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:57:00,762 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 935 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:00,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 1307 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:57:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14511 states. [2022-11-26 00:57:16,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14511 to 12600. [2022-11-26 00:57:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12600 states, 12598 states have (on average 1.3387045562787745) internal successors, (16865), 12599 states have internal predecessors, (16865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:57:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 16865 transitions. [2022-11-26 00:57:16,944 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 16865 transitions. Word has length 72 [2022-11-26 00:57:16,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:57:16,944 INFO L495 AbstractCegarLoop]: Abstraction has 12600 states and 16865 transitions. [2022-11-26 00:57:16,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:57:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 16865 transitions. [2022-11-26 00:57:16,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-26 00:57:16,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:16,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:57:16,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-26 00:57:16,947 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:57:16,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:16,947 INFO L85 PathProgramCache]: Analyzing trace with hash 805421842, now seen corresponding path program 1 times [2022-11-26 00:57:16,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:57:16,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210742518] [2022-11-26 00:57:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:16,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:57:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:17,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:57:17,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210742518] [2022-11-26 00:57:17,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210742518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:57:17,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:57:17,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:57:17,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981393003] [2022-11-26 00:57:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:57:17,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:57:17,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:57:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:57:17,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:57:17,265 INFO L87 Difference]: Start difference. First operand 12600 states and 16865 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:57:48,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:48,505 INFO L93 Difference]: Finished difference Result 22871 states and 30233 transitions. [2022-11-26 00:57:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 00:57:48,505 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-26 00:57:48,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:48,627 INFO L225 Difference]: With dead ends: 22871 [2022-11-26 00:57:48,627 INFO L226 Difference]: Without dead ends: 21980 [2022-11-26 00:57:48,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2022-11-26 00:57:48,633 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 3341 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 2845 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3341 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:48,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3341 Valid, 2597 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2845 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-26 00:57:48,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21980 states. [2022-11-26 00:58:03,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21980 to 12600. [2022-11-26 00:58:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12600 states, 12598 states have (on average 1.3386251785997778) internal successors, (16864), 12599 states have internal predecessors, (16864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:58:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 16864 transitions. [2022-11-26 00:58:03,586 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 16864 transitions. Word has length 73 [2022-11-26 00:58:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:58:03,587 INFO L495 AbstractCegarLoop]: Abstraction has 12600 states and 16864 transitions. [2022-11-26 00:58:03,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:58:03,587 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 16864 transitions. [2022-11-26 00:58:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-26 00:58:03,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:58:03,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:58:03,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-26 00:58:03,590 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:58:03,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:58:03,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1846027830, now seen corresponding path program 1 times [2022-11-26 00:58:03,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:58:03,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692310319] [2022-11-26 00:58:03,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:58:03,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:58:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:58:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:58:03,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:58:03,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692310319] [2022-11-26 00:58:03,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692310319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:58:03,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:58:03,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:58:03,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124072674] [2022-11-26 00:58:03,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:58:03,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:58:03,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:58:03,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:58:03,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:58:03,901 INFO L87 Difference]: Start difference. First operand 12600 states and 16864 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:58:28,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:58:28,914 INFO L93 Difference]: Finished difference Result 18543 states and 24600 transitions. [2022-11-26 00:58:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:58:28,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-26 00:58:28,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:58:28,942 INFO L225 Difference]: With dead ends: 18543 [2022-11-26 00:58:28,942 INFO L226 Difference]: Without dead ends: 17689 [2022-11-26 00:58:28,946 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:58:28,947 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 3190 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 2670 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3190 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:58:28,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3190 Valid, 2509 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2670 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-26 00:58:28,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17689 states. [2022-11-26 00:58:43,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17689 to 12600. [2022-11-26 00:58:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12600 states, 12598 states have (on average 1.3385458009207811) internal successors, (16863), 12599 states have internal predecessors, (16863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:58:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 16863 transitions. [2022-11-26 00:58:43,842 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 16863 transitions. Word has length 73 [2022-11-26 00:58:43,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:58:43,842 INFO L495 AbstractCegarLoop]: Abstraction has 12600 states and 16863 transitions. [2022-11-26 00:58:43,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:58:43,842 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 16863 transitions. [2022-11-26 00:58:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-26 00:58:43,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:58:43,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:58:43,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-26 00:58:43,845 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:58:43,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:58:43,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1717177262, now seen corresponding path program 1 times [2022-11-26 00:58:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:58:43,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157233963] [2022-11-26 00:58:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:58:43,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:58:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:58:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:58:44,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:58:44,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157233963] [2022-11-26 00:58:44,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157233963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:58:44,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:58:44,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:58:44,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767143169] [2022-11-26 00:58:44,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:58:44,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:58:44,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:58:44,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:58:44,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:58:44,125 INFO L87 Difference]: Start difference. First operand 12600 states and 16863 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:10,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:59:10,418 INFO L93 Difference]: Finished difference Result 20339 states and 26867 transitions. [2022-11-26 00:59:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:59:10,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-26 00:59:10,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:59:10,445 INFO L225 Difference]: With dead ends: 20339 [2022-11-26 00:59:10,445 INFO L226 Difference]: Without dead ends: 19475 [2022-11-26 00:59:10,449 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:59:10,450 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 3159 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 2852 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3159 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:59:10,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3159 Valid, 2684 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2852 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-26 00:59:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19475 states. [2022-11-26 00:59:24,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19475 to 12600. [2022-11-26 00:59:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12600 states, 12598 states have (on average 1.3384664232417844) internal successors, (16862), 12599 states have internal predecessors, (16862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 16862 transitions. [2022-11-26 00:59:24,749 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 16862 transitions. Word has length 73 [2022-11-26 00:59:24,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:59:24,749 INFO L495 AbstractCegarLoop]: Abstraction has 12600 states and 16862 transitions. [2022-11-26 00:59:24,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:24,749 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 16862 transitions. [2022-11-26 00:59:24,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-26 00:59:24,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:59:24,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:59:24,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-26 00:59:24,752 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:59:24,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:59:24,753 INFO L85 PathProgramCache]: Analyzing trace with hash 861010402, now seen corresponding path program 1 times [2022-11-26 00:59:24,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:59:24,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778323670] [2022-11-26 00:59:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:59:24,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:59:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:59:25,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:59:25,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:59:25,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778323670] [2022-11-26 00:59:25,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778323670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:59:25,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:59:25,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:59:25,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310661074] [2022-11-26 00:59:25,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:59:25,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:59:25,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:59:25,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:59:25,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:59:25,025 INFO L87 Difference]: Start difference. First operand 12600 states and 16862 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:59:48,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:59:48,682 INFO L93 Difference]: Finished difference Result 18543 states and 24598 transitions. [2022-11-26 00:59:48,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:59:48,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-26 00:59:48,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:59:48,707 INFO L225 Difference]: With dead ends: 18543 [2022-11-26 00:59:48,707 INFO L226 Difference]: Without dead ends: 17689 [2022-11-26 00:59:48,711 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:59:48,712 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 3179 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 2685 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3179 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:59:48,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3179 Valid, 2549 Invalid, 2700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2685 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-26 00:59:48,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17689 states. [2022-11-26 01:00:02,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17689 to 12600. [2022-11-26 01:00:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12600 states, 12598 states have (on average 1.3383870455627878) internal successors, (16861), 12599 states have internal predecessors, (16861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:02,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 16861 transitions. [2022-11-26 01:00:02,804 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 16861 transitions. Word has length 73 [2022-11-26 01:00:02,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:02,805 INFO L495 AbstractCegarLoop]: Abstraction has 12600 states and 16861 transitions. [2022-11-26 01:00:02,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:02,805 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 16861 transitions. [2022-11-26 01:00:02,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-26 01:00:02,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:02,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:02,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-26 01:00:02,807 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 01:00:02,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:02,807 INFO L85 PathProgramCache]: Analyzing trace with hash 895912627, now seen corresponding path program 1 times [2022-11-26 01:00:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:02,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321651095] [2022-11-26 01:00:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:02,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:03,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:03,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321651095] [2022-11-26 01:00:03,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321651095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:00:03,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:00:03,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 01:00:03,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896204788] [2022-11-26 01:00:03,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:00:03,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 01:00:03,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:03,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 01:00:03,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:00:03,206 INFO L87 Difference]: Start difference. First operand 12600 states and 16861 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:44,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:44,998 INFO L93 Difference]: Finished difference Result 31833 states and 42566 transitions. [2022-11-26 01:00:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-26 01:00:44,999 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-26 01:00:44,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:45,043 INFO L225 Difference]: With dead ends: 31833 [2022-11-26 01:00:45,043 INFO L226 Difference]: Without dead ends: 30969 [2022-11-26 01:00:45,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2022-11-26 01:00:45,051 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 7275 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 3309 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7275 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 3562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 3309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:45,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7275 Valid, 2828 Invalid, 3562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 3309 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-26 01:00:45,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30969 states. [2022-11-26 01:00:59,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30969 to 12604. [2022-11-26 01:00:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12604 states, 12602 states have (on average 1.3382796381526743) internal successors, (16865), 12603 states have internal predecessors, (16865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12604 states to 12604 states and 16865 transitions. [2022-11-26 01:00:59,984 INFO L78 Accepts]: Start accepts. Automaton has 12604 states and 16865 transitions. Word has length 73 [2022-11-26 01:00:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:59,985 INFO L495 AbstractCegarLoop]: Abstraction has 12604 states and 16865 transitions. [2022-11-26 01:00:59,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:00:59,985 INFO L276 IsEmpty]: Start isEmpty. Operand 12604 states and 16865 transitions. [2022-11-26 01:00:59,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-26 01:00:59,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:59,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:00:59,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-26 01:00:59,987 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 01:00:59,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:59,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2099397559, now seen corresponding path program 1 times [2022-11-26 01:00:59,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:59,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37975397] [2022-11-26 01:00:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:59,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:00,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:00,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37975397] [2022-11-26 01:01:00,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37975397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:00,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:00,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 01:01:00,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343163419] [2022-11-26 01:01:00,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:00,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 01:01:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 01:01:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-26 01:01:00,196 INFO L87 Difference]: Start difference. First operand 12604 states and 16865 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:23,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:23,446 INFO L93 Difference]: Finished difference Result 17277 states and 22720 transitions. [2022-11-26 01:01:23,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 01:01:23,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-26 01:01:23,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:23,467 INFO L225 Difference]: With dead ends: 17277 [2022-11-26 01:01:23,468 INFO L226 Difference]: Without dead ends: 16413 [2022-11-26 01:01:23,471 INFO L412 NwaCegarLoop]: 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 [2022-11-26 01:01:23,472 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 3657 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 2475 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3657 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:23,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3657 Valid, 2248 Invalid, 2492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2475 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-26 01:01:23,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16413 states. [2022-11-26 01:01:38,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16413 to 12600. [2022-11-26 01:01:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12600 states, 12598 states have (on average 1.338307667883791) internal successors, (16860), 12599 states have internal predecessors, (16860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 16860 transitions. [2022-11-26 01:01:38,398 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 16860 transitions. Word has length 74 [2022-11-26 01:01:38,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:38,398 INFO L495 AbstractCegarLoop]: Abstraction has 12600 states and 16860 transitions. [2022-11-26 01:01:38,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 16860 transitions. [2022-11-26 01:01:38,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-26 01:01:38,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:38,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:38,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-26 01:01:38,401 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 01:01:38,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1855348112, now seen corresponding path program 1 times [2022-11-26 01:01:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:38,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718424590] [2022-11-26 01:01:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:38,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:39,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:39,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:39,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718424590] [2022-11-26 01:01:39,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718424590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:39,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:39,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-26 01:01:39,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616367232] [2022-11-26 01:01:39,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:39,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 01:01:39,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:39,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 01:01:39,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-26 01:01:39,087 INFO L87 Difference]: Start difference. First operand 12600 states and 16860 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)