./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh --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 5a17c5e6b377f57a67eda09046c4807c6b84e7806fd109e4ef14e9498a7cb447 --- 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-2329fc7 [2022-12-14 11:14:19,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:14:19,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:14:19,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:14:19,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:14:19,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:14:19,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:14:19,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:14:19,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:14:19,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:14:19,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:14:19,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:14:19,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:14:19,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:14:19,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:14:19,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:14:19,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:14:19,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:14:19,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:14:19,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:14:19,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:14:19,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:14:19,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:14:19,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:14:19,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:14:19,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:14:19,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:14:19,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:14:19,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:14:19,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:14:19,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:14:19,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:14:19,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:14:19,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:14:19,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:14:19,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:14:19,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:14:19,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:14:19,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:14:19,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:14:19,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:14:19,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:14:19,961 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:14:19,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:14:19,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:14:19,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:14:19,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:14:19,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:14:19,963 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:14:19,963 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:14:19,963 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:14:19,963 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:14:19,963 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:14:19,964 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:14:19,964 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:14:19,964 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:14:19,964 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:14:19,964 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:14:19,964 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:14:19,964 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:14:19,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:14:19,965 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:14:19,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:14:19,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:14:19,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:14:19,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:14:19,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:14:19,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:14:19,966 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:14:19,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:14:19,966 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:14:19,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:14:19,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:14:19,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:14:19,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:14:19,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:14:19,967 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:14:19,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:14:19,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:14:19,968 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:14:19,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:14:19,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:14:19,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:14:19,968 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_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a17c5e6b377f57a67eda09046c4807c6b84e7806fd109e4ef14e9498a7cb447 [2022-12-14 11:14:20,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:14:20,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:14:20,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:14:20,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:14:20,152 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:14:20,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-12-14 11:14:22,720 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:14:22,938 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:14:22,939 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-12-14 11:14:22,950 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/data/4f8a39d42/12e537ddd3d84c88890445e10cffed70/FLAGf1ba7387b [2022-12-14 11:14:23,295 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/data/4f8a39d42/12e537ddd3d84c88890445e10cffed70 [2022-12-14 11:14:23,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:14:23,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:14:23,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:14:23,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:14:23,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:14:23,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:14:23" (1/1) ... [2022-12-14 11:14:23,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c287cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23, skipping insertion in model container [2022-12-14 11:14:23,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:14:23" (1/1) ... [2022-12-14 11:14:23,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:14:23,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:14:23,574 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16906,16919] [2022-12-14 11:14:23,603 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23310,23323] [2022-12-14 11:14:23,615 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26497,26510] [2022-12-14 11:14:23,625 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29453,29466] [2022-12-14 11:14:23,639 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33216,33229] [2022-12-14 11:14:23,648 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36248,36261] [2022-12-14 11:14:23,659 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39433,39446] [2022-12-14 11:14:23,668 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42384,42397] [2022-12-14 11:14:23,678 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45768,45781] [2022-12-14 11:14:23,687 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48734,48747] [2022-12-14 11:14:23,696 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[51883,51896] [2022-12-14 11:14:23,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:14:23,727 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:14:23,779 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16906,16919] [2022-12-14 11:14:23,794 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23310,23323] [2022-12-14 11:14:23,801 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26497,26510] [2022-12-14 11:14:23,808 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29453,29466] [2022-12-14 11:14:23,817 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33216,33229] [2022-12-14 11:14:23,824 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36248,36261] [2022-12-14 11:14:23,832 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39433,39446] [2022-12-14 11:14:23,838 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42384,42397] [2022-12-14 11:14:23,845 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45768,45781] [2022-12-14 11:14:23,852 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48734,48747] [2022-12-14 11:14:23,859 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_926f7b66-9861-4a86-bbef-d299e8132e96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[51883,51896] [2022-12-14 11:14:23,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:14:23,886 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:14:23,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23 WrapperNode [2022-12-14 11:14:23,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:14:23,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:14:23,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:14:23,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:14:23,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23" (1/1) ... [2022-12-14 11:14:23,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23" (1/1) ... [2022-12-14 11:14:23,957 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2571 [2022-12-14 11:14:23,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:14:23,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:14:23,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:14:23,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:14:23,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23" (1/1) ... [2022-12-14 11:14:23,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23" (1/1) ... [2022-12-14 11:14:23,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23" (1/1) ... [2022-12-14 11:14:23,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23" (1/1) ... [2022-12-14 11:14:23,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23" (1/1) ... [2022-12-14 11:14:24,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23" (1/1) ... [2022-12-14 11:14:24,017 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23" (1/1) ... [2022-12-14 11:14:24,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23" (1/1) ... [2022-12-14 11:14:24,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:14:24,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:14:24,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:14:24,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:14:24,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23" (1/1) ... [2022-12-14 11:14:24,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:14:24,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:14:24,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:14:24,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:14:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:14:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:14:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:14:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:14:24,217 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:14:24,219 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:14:25,158 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:14:25,221 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:14:25,221 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 11:14:25,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:14:25 BoogieIcfgContainer [2022-12-14 11:14:25,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:14:25,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:14:25,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:14:25,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:14:25,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:14:23" (1/3) ... [2022-12-14 11:14:25,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bd58f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:14:25, skipping insertion in model container [2022-12-14 11:14:25,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:14:23" (2/3) ... [2022-12-14 11:14:25,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bd58f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:14:25, skipping insertion in model container [2022-12-14 11:14:25,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:14:25" (3/3) ... [2022-12-14 11:14:25,229 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-12-14 11:14:25,243 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:14:25,243 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-14 11:14:25,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:14:25,328 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;@1ffc7625, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:14:25,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-14 11:14:25,333 INFO L276 IsEmpty]: Start isEmpty. Operand has 516 states, 504 states have (on average 1.8353174603174602) internal successors, (925), 515 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:25,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 11:14:25,344 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:25,344 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] [2022-12-14 11:14:25,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:25,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:25,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1216794109, now seen corresponding path program 1 times [2022-12-14 11:14:25,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:25,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774893366] [2022-12-14 11:14:25,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:25,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:25,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:25,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774893366] [2022-12-14 11:14:25,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774893366] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:25,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:25,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:14:25,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325710294] [2022-12-14 11:14:25,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:25,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:14:25,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:25,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:14:25,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:14:25,680 INFO L87 Difference]: Start difference. First operand has 516 states, 504 states have (on average 1.8353174603174602) internal successors, (925), 515 states have internal predecessors, (925), 0 states have call successors, (0), 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 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:26,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:26,138 INFO L93 Difference]: Finished difference Result 697 states and 1215 transitions. [2022-12-14 11:14:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:14:26,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-12-14 11:14:26,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:26,152 INFO L225 Difference]: With dead ends: 697 [2022-12-14 11:14:26,152 INFO L226 Difference]: Without dead ends: 450 [2022-12-14 11:14:26,156 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 [2022-12-14 11:14:26,159 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 2229 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2229 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:26,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2229 Valid, 481 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:14:26,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-12-14 11:14:26,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2022-12-14 11:14:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 439 states have (on average 1.275626423690205) internal successors, (560), 449 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 560 transitions. [2022-12-14 11:14:26,233 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 560 transitions. Word has length 58 [2022-12-14 11:14:26,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:26,234 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 560 transitions. [2022-12-14 11:14:26,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 560 transitions. [2022-12-14 11:14:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 11:14:26,237 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:26,237 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] [2022-12-14 11:14:26,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:14:26,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:26,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:26,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1191017074, now seen corresponding path program 1 times [2022-12-14 11:14:26,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:26,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945805548] [2022-12-14 11:14:26,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:26,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:26,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:26,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945805548] [2022-12-14 11:14:26,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945805548] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:26,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:26,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:14:26,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806587646] [2022-12-14 11:14:26,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:26,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:14:26,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:26,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:14:26,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:14:26,391 INFO L87 Difference]: Start difference. First operand 450 states and 560 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:26,605 INFO L93 Difference]: Finished difference Result 529 states and 648 transitions. [2022-12-14 11:14:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:14:26,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-12-14 11:14:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:26,608 INFO L225 Difference]: With dead ends: 529 [2022-12-14 11:14:26,608 INFO L226 Difference]: Without dead ends: 310 [2022-12-14 11:14:26,609 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 [2022-12-14 11:14:26,610 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 1079 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:26,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 212 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:14:26,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-12-14 11:14:26,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2022-12-14 11:14:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 299 states have (on average 1.2675585284280937) internal successors, (379), 309 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:26,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 379 transitions. [2022-12-14 11:14:26,630 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 379 transitions. Word has length 58 [2022-12-14 11:14:26,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:26,630 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 379 transitions. [2022-12-14 11:14:26,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:26,630 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 379 transitions. [2022-12-14 11:14:26,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 11:14:26,632 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:26,632 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] [2022-12-14 11:14:26,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:14:26,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:26,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:26,633 INFO L85 PathProgramCache]: Analyzing trace with hash 53020530, now seen corresponding path program 1 times [2022-12-14 11:14:26,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:26,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213984101] [2022-12-14 11:14:26,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:26,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:26,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:26,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:26,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213984101] [2022-12-14 11:14:26,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213984101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:26,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:26,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:14:26,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130177616] [2022-12-14 11:14:26,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:26,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:14:26,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:26,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:14:26,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:14:26,720 INFO L87 Difference]: Start difference. First operand 310 states and 379 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:26,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:26,890 INFO L93 Difference]: Finished difference Result 425 states and 522 transitions. [2022-12-14 11:14:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:14:26,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-12-14 11:14:26,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:26,893 INFO L225 Difference]: With dead ends: 425 [2022-12-14 11:14:26,893 INFO L226 Difference]: Without dead ends: 263 [2022-12-14 11:14:26,894 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 [2022-12-14 11:14:26,895 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 934 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:26,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 179 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:14:26,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-12-14 11:14:26,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2022-12-14 11:14:26,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 252 states have (on average 1.2817460317460319) internal successors, (323), 262 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 323 transitions. [2022-12-14 11:14:26,911 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 323 transitions. Word has length 58 [2022-12-14 11:14:26,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:26,912 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 323 transitions. [2022-12-14 11:14:26,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:26,912 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 323 transitions. [2022-12-14 11:14:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 11:14:26,913 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:26,913 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] [2022-12-14 11:14:26,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:14:26,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:26,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:26,914 INFO L85 PathProgramCache]: Analyzing trace with hash 84136005, now seen corresponding path program 1 times [2022-12-14 11:14:26,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:26,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733067225] [2022-12-14 11:14:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:26,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:27,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:27,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733067225] [2022-12-14 11:14:27,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733067225] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:27,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:27,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:14:27,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172527485] [2022-12-14 11:14:27,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:27,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:14:27,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:27,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:14:27,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:14:27,012 INFO L87 Difference]: Start difference. First operand 263 states and 323 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:27,152 INFO L93 Difference]: Finished difference Result 362 states and 441 transitions. [2022-12-14 11:14:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:14:27,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-12-14 11:14:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:27,154 INFO L225 Difference]: With dead ends: 362 [2022-12-14 11:14:27,154 INFO L226 Difference]: Without dead ends: 225 [2022-12-14 11:14:27,154 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 [2022-12-14 11:14:27,155 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 776 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:27,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 168 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:14:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-12-14 11:14:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-12-14 11:14:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.280373831775701) internal successors, (274), 224 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 274 transitions. [2022-12-14 11:14:27,165 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 274 transitions. Word has length 59 [2022-12-14 11:14:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:27,165 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 274 transitions. [2022-12-14 11:14:27,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 274 transitions. [2022-12-14 11:14:27,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 11:14:27,166 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:27,166 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] [2022-12-14 11:14:27,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 11:14:27,166 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:27,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1322654244, now seen corresponding path program 1 times [2022-12-14 11:14:27,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:27,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459420509] [2022-12-14 11:14:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:27,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:27,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:27,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459420509] [2022-12-14 11:14:27,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459420509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:27,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:27,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:14:27,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727965367] [2022-12-14 11:14:27,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:27,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:14:27,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:27,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:14:27,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:14:27,378 INFO L87 Difference]: Start difference. First operand 225 states and 274 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:27,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:27,888 INFO L93 Difference]: Finished difference Result 457 states and 567 transitions. [2022-12-14 11:14:27,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:14:27,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 11:14:27,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:27,890 INFO L225 Difference]: With dead ends: 457 [2022-12-14 11:14:27,890 INFO L226 Difference]: Without dead ends: 410 [2022-12-14 11:14:27,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 11:14:27,892 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1203 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:27,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 751 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:14:27,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-12-14 11:14:27,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 225. [2022-12-14 11:14:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2757009345794392) internal successors, (273), 224 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:27,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 273 transitions. [2022-12-14 11:14:27,912 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 273 transitions. Word has length 60 [2022-12-14 11:14:27,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:27,912 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 273 transitions. [2022-12-14 11:14:27,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:27,912 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 273 transitions. [2022-12-14 11:14:27,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 11:14:27,913 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:27,913 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] [2022-12-14 11:14:27,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 11:14:27,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:27,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:27,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1579426260, now seen corresponding path program 1 times [2022-12-14 11:14:27,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:27,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44772804] [2022-12-14 11:14:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:27,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:28,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:28,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44772804] [2022-12-14 11:14:28,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44772804] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:28,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:28,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:14:28,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797256964] [2022-12-14 11:14:28,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:28,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:14:28,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:28,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:14:28,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:14:28,140 INFO L87 Difference]: Start difference. First operand 225 states and 273 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:28,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:28,605 INFO L93 Difference]: Finished difference Result 483 states and 599 transitions. [2022-12-14 11:14:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:14:28,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 11:14:28,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:28,607 INFO L225 Difference]: With dead ends: 483 [2022-12-14 11:14:28,607 INFO L226 Difference]: Without dead ends: 414 [2022-12-14 11:14:28,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 11:14:28,609 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 844 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:28,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 748 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:14:28,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-12-14 11:14:28,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 225. [2022-12-14 11:14:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2710280373831775) internal successors, (272), 224 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 272 transitions. [2022-12-14 11:14:28,630 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 272 transitions. Word has length 60 [2022-12-14 11:14:28,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:28,630 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 272 transitions. [2022-12-14 11:14:28,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 272 transitions. [2022-12-14 11:14:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 11:14:28,631 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:28,631 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] [2022-12-14 11:14:28,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 11:14:28,632 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:28,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:28,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1013492058, now seen corresponding path program 1 times [2022-12-14 11:14:28,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:28,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136506577] [2022-12-14 11:14:28,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:28,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:28,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:28,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136506577] [2022-12-14 11:14:28,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136506577] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:28,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:28,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:14:28,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124517269] [2022-12-14 11:14:28,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:28,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:14:28,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:14:28,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:14:28,811 INFO L87 Difference]: Start difference. First operand 225 states and 272 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:29,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:29,121 INFO L93 Difference]: Finished difference Result 426 states and 506 transitions. [2022-12-14 11:14:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 11:14:29,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 11:14:29,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:29,122 INFO L225 Difference]: With dead ends: 426 [2022-12-14 11:14:29,123 INFO L226 Difference]: Without dead ends: 312 [2022-12-14 11:14:29,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:14:29,123 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1054 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:29,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 504 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:14:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-12-14 11:14:29,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 225. [2022-12-14 11:14:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.266355140186916) internal successors, (271), 224 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:29,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 271 transitions. [2022-12-14 11:14:29,145 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 271 transitions. Word has length 60 [2022-12-14 11:14:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:29,145 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 271 transitions. [2022-12-14 11:14:29,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 271 transitions. [2022-12-14 11:14:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 11:14:29,146 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:29,146 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] [2022-12-14 11:14:29,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 11:14:29,146 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:29,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:29,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1005199851, now seen corresponding path program 1 times [2022-12-14 11:14:29,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:29,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155679741] [2022-12-14 11:14:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:29,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:29,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:29,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155679741] [2022-12-14 11:14:29,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155679741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:29,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:29,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:14:29,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776382483] [2022-12-14 11:14:29,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:29,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:14:29,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:29,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:14:29,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:14:29,314 INFO L87 Difference]: Start difference. First operand 225 states and 271 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:29,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:29,799 INFO L93 Difference]: Finished difference Result 427 states and 522 transitions. [2022-12-14 11:14:29,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:14:29,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 11:14:29,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:29,801 INFO L225 Difference]: With dead ends: 427 [2022-12-14 11:14:29,801 INFO L226 Difference]: Without dead ends: 410 [2022-12-14 11:14:29,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 11:14:29,802 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1083 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:29,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 900 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:14:29,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-12-14 11:14:29,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 225. [2022-12-14 11:14:29,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2616822429906542) internal successors, (270), 224 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:29,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 270 transitions. [2022-12-14 11:14:29,830 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 270 transitions. Word has length 62 [2022-12-14 11:14:29,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:29,831 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 270 transitions. [2022-12-14 11:14:29,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:29,831 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 270 transitions. [2022-12-14 11:14:29,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 11:14:29,832 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:29,832 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] [2022-12-14 11:14:29,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 11:14:29,832 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:29,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:29,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1319054290, now seen corresponding path program 1 times [2022-12-14 11:14:29,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:29,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246322622] [2022-12-14 11:14:29,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:29,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:30,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:30,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246322622] [2022-12-14 11:14:30,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246322622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:30,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:30,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:14:30,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156623404] [2022-12-14 11:14:30,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:30,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:14:30,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:30,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:14:30,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:14:30,074 INFO L87 Difference]: Start difference. First operand 225 states and 270 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:30,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:30,573 INFO L93 Difference]: Finished difference Result 407 states and 491 transitions. [2022-12-14 11:14:30,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:14:30,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 11:14:30,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:30,575 INFO L225 Difference]: With dead ends: 407 [2022-12-14 11:14:30,575 INFO L226 Difference]: Without dead ends: 402 [2022-12-14 11:14:30,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 11:14:30,576 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 1080 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:30,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 844 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:14:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-12-14 11:14:30,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 225. [2022-12-14 11:14:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2570093457943925) internal successors, (269), 224 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:30,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 269 transitions. [2022-12-14 11:14:30,610 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 269 transitions. Word has length 62 [2022-12-14 11:14:30,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:30,610 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 269 transitions. [2022-12-14 11:14:30,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:30,610 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 269 transitions. [2022-12-14 11:14:30,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 11:14:30,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:30,610 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] [2022-12-14 11:14:30,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 11:14:30,611 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:30,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:30,611 INFO L85 PathProgramCache]: Analyzing trace with hash -806955644, now seen corresponding path program 1 times [2022-12-14 11:14:30,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:30,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291133326] [2022-12-14 11:14:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:30,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:30,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:30,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291133326] [2022-12-14 11:14:30,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291133326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:30,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:30,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:14:30,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314303653] [2022-12-14 11:14:30,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:30,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:14:30,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:30,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:14:30,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:14:30,783 INFO L87 Difference]: Start difference. First operand 225 states and 269 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:31,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:31,302 INFO L93 Difference]: Finished difference Result 489 states and 598 transitions. [2022-12-14 11:14:31,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:14:31,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 11:14:31,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:31,303 INFO L225 Difference]: With dead ends: 489 [2022-12-14 11:14:31,303 INFO L226 Difference]: Without dead ends: 414 [2022-12-14 11:14:31,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 11:14:31,305 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1021 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:31,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 965 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:14:31,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-12-14 11:14:31,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 225. [2022-12-14 11:14:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2523364485981308) internal successors, (268), 224 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 268 transitions. [2022-12-14 11:14:31,338 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 268 transitions. Word has length 62 [2022-12-14 11:14:31,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:31,338 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 268 transitions. [2022-12-14 11:14:31,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:31,339 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 268 transitions. [2022-12-14 11:14:31,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 11:14:31,339 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:31,339 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] [2022-12-14 11:14:31,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 11:14:31,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:31,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:31,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2033918897, now seen corresponding path program 1 times [2022-12-14 11:14:31,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:31,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3827731] [2022-12-14 11:14:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:31,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:31,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:31,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3827731] [2022-12-14 11:14:31,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3827731] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:31,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:31,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:14:31,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161170552] [2022-12-14 11:14:31,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:31,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:14:31,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:31,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:14:31,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:14:31,518 INFO L87 Difference]: Start difference. First operand 225 states and 268 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:32,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:32,044 INFO L93 Difference]: Finished difference Result 462 states and 566 transitions. [2022-12-14 11:14:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:14:32,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 11:14:32,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:32,045 INFO L225 Difference]: With dead ends: 462 [2022-12-14 11:14:32,046 INFO L226 Difference]: Without dead ends: 410 [2022-12-14 11:14:32,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 11:14:32,046 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 717 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:32,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 970 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:14:32,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-12-14 11:14:32,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 225. [2022-12-14 11:14:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2476635514018692) internal successors, (267), 224 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:32,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 267 transitions. [2022-12-14 11:14:32,077 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 267 transitions. Word has length 62 [2022-12-14 11:14:32,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:32,077 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 267 transitions. [2022-12-14 11:14:32,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:32,077 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 267 transitions. [2022-12-14 11:14:32,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 11:14:32,078 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:32,078 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] [2022-12-14 11:14:32,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 11:14:32,078 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:32,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1443459928, now seen corresponding path program 1 times [2022-12-14 11:14:32,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:32,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78100787] [2022-12-14 11:14:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:32,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:32,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:32,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78100787] [2022-12-14 11:14:32,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78100787] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:32,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:32,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:14:32,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379882751] [2022-12-14 11:14:32,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:32,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:14:32,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:32,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:14:32,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:14:32,248 INFO L87 Difference]: Start difference. First operand 225 states and 267 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:32,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:32,740 INFO L93 Difference]: Finished difference Result 442 states and 535 transitions. [2022-12-14 11:14:32,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:14:32,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 11:14:32,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:32,742 INFO L225 Difference]: With dead ends: 442 [2022-12-14 11:14:32,742 INFO L226 Difference]: Without dead ends: 402 [2022-12-14 11:14:32,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 11:14:32,742 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 1031 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:32,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 895 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:14:32,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-12-14 11:14:32,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 225. [2022-12-14 11:14:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2429906542056075) internal successors, (266), 224 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 266 transitions. [2022-12-14 11:14:32,765 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 266 transitions. Word has length 62 [2022-12-14 11:14:32,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:32,765 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 266 transitions. [2022-12-14 11:14:32,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 266 transitions. [2022-12-14 11:14:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 11:14:32,766 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:32,766 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] [2022-12-14 11:14:32,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 11:14:32,766 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:32,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:32,766 INFO L85 PathProgramCache]: Analyzing trace with hash 823720425, now seen corresponding path program 1 times [2022-12-14 11:14:32,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:32,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118222552] [2022-12-14 11:14:32,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:32,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:32,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:32,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118222552] [2022-12-14 11:14:32,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118222552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:32,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:32,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:14:32,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575534900] [2022-12-14 11:14:32,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:32,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:14:32,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:32,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:14:32,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:14:32,897 INFO L87 Difference]: Start difference. First operand 225 states and 266 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:33,378 INFO L93 Difference]: Finished difference Result 407 states and 487 transitions. [2022-12-14 11:14:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:14:33,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 11:14:33,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:33,380 INFO L225 Difference]: With dead ends: 407 [2022-12-14 11:14:33,380 INFO L226 Difference]: Without dead ends: 402 [2022-12-14 11:14:33,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 11:14:33,381 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 1005 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:33,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 909 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:14:33,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-12-14 11:14:33,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 225. [2022-12-14 11:14:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.2383177570093458) internal successors, (265), 224 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 265 transitions. [2022-12-14 11:14:33,406 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 265 transitions. Word has length 62 [2022-12-14 11:14:33,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:33,406 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 265 transitions. [2022-12-14 11:14:33,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:33,406 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 265 transitions. [2022-12-14 11:14:33,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 11:14:33,406 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:33,407 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] [2022-12-14 11:14:33,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 11:14:33,407 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:33,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:33,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2020699465, now seen corresponding path program 1 times [2022-12-14 11:14:33,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:33,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491800884] [2022-12-14 11:14:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:33,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:33,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:33,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491800884] [2022-12-14 11:14:33,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491800884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:33,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:33,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:14:33,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721847648] [2022-12-14 11:14:33,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:33,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:14:33,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:33,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:14:33,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:14:33,588 INFO L87 Difference]: Start difference. First operand 225 states and 265 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:34,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:34,108 INFO L93 Difference]: Finished difference Result 439 states and 529 transitions. [2022-12-14 11:14:34,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:14:34,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 11:14:34,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:34,109 INFO L225 Difference]: With dead ends: 439 [2022-12-14 11:14:34,110 INFO L226 Difference]: Without dead ends: 402 [2022-12-14 11:14:34,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 11:14:34,110 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1040 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:34,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 859 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:14:34,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-12-14 11:14:34,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 225. [2022-12-14 11:14:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.233644859813084) internal successors, (264), 224 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 264 transitions. [2022-12-14 11:14:34,142 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 264 transitions. Word has length 62 [2022-12-14 11:14:34,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:34,142 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 264 transitions. [2022-12-14 11:14:34,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 264 transitions. [2022-12-14 11:14:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 11:14:34,143 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:34,143 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] [2022-12-14 11:14:34,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 11:14:34,143 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:34,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash -29192250, now seen corresponding path program 1 times [2022-12-14 11:14:34,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:34,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261132305] [2022-12-14 11:14:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:34,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:35,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:35,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261132305] [2022-12-14 11:14:35,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261132305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:35,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:35,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-14 11:14:35,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777227498] [2022-12-14 11:14:35,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 11:14:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:35,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 11:14:35,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-12-14 11:14:35,165 INFO L87 Difference]: Start difference. First operand 225 states and 264 transitions. Second operand has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 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) [2022-12-14 11:14:37,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:37,782 INFO L93 Difference]: Finished difference Result 677 states and 786 transitions. [2022-12-14 11:14:37,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 11:14:37,782 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 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 [2022-12-14 11:14:37,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:37,783 INFO L225 Difference]: With dead ends: 677 [2022-12-14 11:14:37,783 INFO L226 Difference]: Without dead ends: 673 [2022-12-14 11:14:37,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=316, Invalid=1664, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 11:14:37,784 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1734 mSDsluCounter, 6349 mSDsCounter, 0 mSdLazyCounter, 3570 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 6851 SdHoareTripleChecker+Invalid, 3570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:37,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 6851 Invalid, 3570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3570 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 11:14:37,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-12-14 11:14:37,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 240. [2022-12-14 11:14:37,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 229 states have (on average 1.240174672489083) internal successors, (284), 239 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:37,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 284 transitions. [2022-12-14 11:14:37,824 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 284 transitions. Word has length 64 [2022-12-14 11:14:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:37,824 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 284 transitions. [2022-12-14 11:14:37,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 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) [2022-12-14 11:14:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 284 transitions. [2022-12-14 11:14:37,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 11:14:37,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:37,825 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] [2022-12-14 11:14:37,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 11:14:37,825 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:37,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:37,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2063869805, now seen corresponding path program 1 times [2022-12-14 11:14:37,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:37,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821016075] [2022-12-14 11:14:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:37,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:38,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:38,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821016075] [2022-12-14 11:14:38,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821016075] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:38,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:38,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-14 11:14:38,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174989439] [2022-12-14 11:14:38,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:38,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 11:14:38,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 11:14:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-12-14 11:14:38,648 INFO L87 Difference]: Start difference. First operand 240 states and 284 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 22 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) [2022-12-14 11:14:41,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:41,356 INFO L93 Difference]: Finished difference Result 691 states and 813 transitions. [2022-12-14 11:14:41,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 11:14:41,357 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 22 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 [2022-12-14 11:14:41,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:41,358 INFO L225 Difference]: With dead ends: 691 [2022-12-14 11:14:41,358 INFO L226 Difference]: Without dead ends: 649 [2022-12-14 11:14:41,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=1362, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 11:14:41,359 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 1940 mSDsluCounter, 6198 mSDsCounter, 0 mSdLazyCounter, 3438 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 6709 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:41,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 6709 Invalid, 3440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3438 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 11:14:41,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-12-14 11:14:41,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 245. [2022-12-14 11:14:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.2393162393162394) internal successors, (290), 244 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 290 transitions. [2022-12-14 11:14:41,403 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 290 transitions. Word has length 64 [2022-12-14 11:14:41,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:41,403 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 290 transitions. [2022-12-14 11:14:41,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 22 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) [2022-12-14 11:14:41,403 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 290 transitions. [2022-12-14 11:14:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 11:14:41,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:41,403 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] [2022-12-14 11:14:41,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 11:14:41,404 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:41,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:41,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1085248927, now seen corresponding path program 1 times [2022-12-14 11:14:41,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:41,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036818369] [2022-12-14 11:14:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:41,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:41,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:41,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036818369] [2022-12-14 11:14:41,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036818369] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:41,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:41,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 11:14:41,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000541506] [2022-12-14 11:14:41,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:41,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 11:14:41,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:41,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 11:14:41,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:14:41,725 INFO L87 Difference]: Start difference. First operand 245 states and 290 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 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) [2022-12-14 11:14:42,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:42,481 INFO L93 Difference]: Finished difference Result 553 states and 679 transitions. [2022-12-14 11:14:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 11:14:42,481 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 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 [2022-12-14 11:14:42,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:42,482 INFO L225 Difference]: With dead ends: 553 [2022-12-14 11:14:42,482 INFO L226 Difference]: Without dead ends: 502 [2022-12-14 11:14:42,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-12-14 11:14:42,483 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1319 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:42,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 2141 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:14:42,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-12-14 11:14:42,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 229. [2022-12-14 11:14:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 220 states have (on average 1.231818181818182) internal successors, (271), 228 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:42,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 271 transitions. [2022-12-14 11:14:42,533 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 271 transitions. Word has length 64 [2022-12-14 11:14:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:42,533 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 271 transitions. [2022-12-14 11:14:42,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 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) [2022-12-14 11:14:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 271 transitions. [2022-12-14 11:14:42,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 11:14:42,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:42,534 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] [2022-12-14 11:14:42,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 11:14:42,534 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:42,534 INFO L85 PathProgramCache]: Analyzing trace with hash 632833740, now seen corresponding path program 1 times [2022-12-14 11:14:42,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:42,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926563973] [2022-12-14 11:14:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:42,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:42,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:42,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926563973] [2022-12-14 11:14:42,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926563973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:42,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:42,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 11:14:42,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756966638] [2022-12-14 11:14:42,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:42,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 11:14:42,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:42,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 11:14:42,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-14 11:14:42,849 INFO L87 Difference]: Start difference. First operand 229 states and 271 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 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) [2022-12-14 11:14:43,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:43,434 INFO L93 Difference]: Finished difference Result 454 states and 541 transitions. [2022-12-14 11:14:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 11:14:43,435 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 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 [2022-12-14 11:14:43,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:43,436 INFO L225 Difference]: With dead ends: 454 [2022-12-14 11:14:43,436 INFO L226 Difference]: Without dead ends: 356 [2022-12-14 11:14:43,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-12-14 11:14:43,436 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 971 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:43,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 896 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:14:43,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-12-14 11:14:43,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 166. [2022-12-14 11:14:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.204968944099379) internal successors, (194), 165 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 194 transitions. [2022-12-14 11:14:43,479 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 194 transitions. Word has length 64 [2022-12-14 11:14:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:43,480 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 194 transitions. [2022-12-14 11:14:43,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 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) [2022-12-14 11:14:43,480 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 194 transitions. [2022-12-14 11:14:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 11:14:43,480 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:43,480 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] [2022-12-14 11:14:43,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 11:14:43,480 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:43,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:43,481 INFO L85 PathProgramCache]: Analyzing trace with hash -735435847, now seen corresponding path program 1 times [2022-12-14 11:14:43,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:43,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728389312] [2022-12-14 11:14:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:43,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:43,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:43,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728389312] [2022-12-14 11:14:43,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728389312] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:43,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:43,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:14:43,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560472754] [2022-12-14 11:14:43,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:43,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:14:43,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:43,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:14:43,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:14:43,611 INFO L87 Difference]: Start difference. First operand 166 states and 194 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) [2022-12-14 11:14:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:43,958 INFO L93 Difference]: Finished difference Result 247 states and 288 transitions. [2022-12-14 11:14:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 11:14:43,958 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 [2022-12-14 11:14:43,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:43,960 INFO L225 Difference]: With dead ends: 247 [2022-12-14 11:14:43,960 INFO L226 Difference]: Without dead ends: 240 [2022-12-14 11:14:43,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-12-14 11:14:43,961 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 630 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:43,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 441 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:14:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-12-14 11:14:44,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 166. [2022-12-14 11:14:44,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.1925465838509317) internal successors, (192), 165 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 192 transitions. [2022-12-14 11:14:44,006 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 192 transitions. Word has length 65 [2022-12-14 11:14:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:44,006 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 192 transitions. [2022-12-14 11:14:44,006 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) [2022-12-14 11:14:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 192 transitions. [2022-12-14 11:14:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 11:14:44,007 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:44,007 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] [2022-12-14 11:14:44,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 11:14:44,007 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:44,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:44,007 INFO L85 PathProgramCache]: Analyzing trace with hash 969526156, now seen corresponding path program 1 times [2022-12-14 11:14:44,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:44,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069757814] [2022-12-14 11:14:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:44,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:44,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:44,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069757814] [2022-12-14 11:14:44,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069757814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:44,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:44,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-14 11:14:44,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278657298] [2022-12-14 11:14:44,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:44,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 11:14:44,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:44,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 11:14:44,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-12-14 11:14:44,477 INFO L87 Difference]: Start difference. First operand 166 states and 192 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 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) [2022-12-14 11:14:46,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:46,021 INFO L93 Difference]: Finished difference Result 404 states and 477 transitions. [2022-12-14 11:14:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 11:14:46,022 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 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 [2022-12-14 11:14:46,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:46,023 INFO L225 Difference]: With dead ends: 404 [2022-12-14 11:14:46,023 INFO L226 Difference]: Without dead ends: 400 [2022-12-14 11:14:46,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 11:14:46,024 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 1012 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:46,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 2758 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 11:14:46,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-12-14 11:14:46,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 166. [2022-12-14 11:14:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.1925465838509317) internal successors, (192), 165 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:46,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 192 transitions. [2022-12-14 11:14:46,073 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 192 transitions. Word has length 65 [2022-12-14 11:14:46,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:46,073 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 192 transitions. [2022-12-14 11:14:46,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 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) [2022-12-14 11:14:46,073 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 192 transitions. [2022-12-14 11:14:46,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 11:14:46,073 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:46,073 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] [2022-12-14 11:14:46,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 11:14:46,074 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:46,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:46,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1053254316, now seen corresponding path program 1 times [2022-12-14 11:14:46,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:46,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986798083] [2022-12-14 11:14:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:46,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:46,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:46,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986798083] [2022-12-14 11:14:46,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986798083] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:46,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:46,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 11:14:46,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481931098] [2022-12-14 11:14:46,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:46,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 11:14:46,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:46,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 11:14:46,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:14:46,412 INFO L87 Difference]: Start difference. First operand 166 states and 192 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 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) [2022-12-14 11:14:47,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:47,018 INFO L93 Difference]: Finished difference Result 381 states and 463 transitions. [2022-12-14 11:14:47,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 11:14:47,019 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 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 [2022-12-14 11:14:47,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:47,020 INFO L225 Difference]: With dead ends: 381 [2022-12-14 11:14:47,020 INFO L226 Difference]: Without dead ends: 299 [2022-12-14 11:14:47,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-12-14 11:14:47,020 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 738 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:47,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1340 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:14:47,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-12-14 11:14:47,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 113. [2022-12-14 11:14:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 112 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:47,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2022-12-14 11:14:47,062 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 65 [2022-12-14 11:14:47,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:47,062 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2022-12-14 11:14:47,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 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) [2022-12-14 11:14:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2022-12-14 11:14:47,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 11:14:47,063 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:47,063 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] [2022-12-14 11:14:47,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 11:14:47,063 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:47,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:47,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2125205281, now seen corresponding path program 1 times [2022-12-14 11:14:47,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:47,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497313955] [2022-12-14 11:14:47,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:47,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:47,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:47,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497313955] [2022-12-14 11:14:47,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497313955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:47,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:47,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:14:47,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512331884] [2022-12-14 11:14:47,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:47,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:14:47,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:47,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:14:47,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:14:47,203 INFO L87 Difference]: Start difference. First operand 113 states and 130 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) [2022-12-14 11:14:47,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:47,458 INFO L93 Difference]: Finished difference Result 228 states and 273 transitions. [2022-12-14 11:14:47,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 11:14:47,458 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 [2022-12-14 11:14:47,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:47,459 INFO L225 Difference]: With dead ends: 228 [2022-12-14 11:14:47,459 INFO L226 Difference]: Without dead ends: 175 [2022-12-14 11:14:47,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-12-14 11:14:47,460 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 461 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:47,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 364 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:14:47,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-12-14 11:14:47,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 113. [2022-12-14 11:14:47,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.162162162162162) internal successors, (129), 112 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:47,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2022-12-14 11:14:47,515 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 65 [2022-12-14 11:14:47,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:47,515 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2022-12-14 11:14:47,515 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) [2022-12-14 11:14:47,515 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2022-12-14 11:14:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 11:14:47,515 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:47,515 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] [2022-12-14 11:14:47,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 11:14:47,516 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:47,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:47,516 INFO L85 PathProgramCache]: Analyzing trace with hash 846749532, now seen corresponding path program 1 times [2022-12-14 11:14:47,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:47,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337747992] [2022-12-14 11:14:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:47,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:48,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:48,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337747992] [2022-12-14 11:14:48,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337747992] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:48,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:48,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-14 11:14:48,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899130877] [2022-12-14 11:14:48,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:48,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 11:14:48,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:48,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 11:14:48,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-12-14 11:14:48,203 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 22 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) [2022-12-14 11:14:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:49,931 INFO L93 Difference]: Finished difference Result 516 states and 632 transitions. [2022-12-14 11:14:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 11:14:49,931 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 22 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 [2022-12-14 11:14:49,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:49,932 INFO L225 Difference]: With dead ends: 516 [2022-12-14 11:14:49,932 INFO L226 Difference]: Without dead ends: 510 [2022-12-14 11:14:49,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=262, Invalid=1298, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 11:14:49,933 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1257 mSDsluCounter, 3815 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 4147 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:49,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 4147 Invalid, 1892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 11:14:49,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-12-14 11:14:49,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 129. [2022-12-14 11:14:49,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 127 states have (on average 1.1732283464566928) internal successors, (149), 128 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2022-12-14 11:14:49,988 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 67 [2022-12-14 11:14:49,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:49,989 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2022-12-14 11:14:49,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 22 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) [2022-12-14 11:14:49,989 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2022-12-14 11:14:49,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 11:14:49,989 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:49,989 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] [2022-12-14 11:14:49,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 11:14:49,989 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:49,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash 766856175, now seen corresponding path program 1 times [2022-12-14 11:14:49,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:49,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680875858] [2022-12-14 11:14:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:49,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:50,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:50,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680875858] [2022-12-14 11:14:50,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680875858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:50,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:50,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-14 11:14:50,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309741789] [2022-12-14 11:14:50,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:50,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 11:14:50,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:50,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 11:14:50,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-14 11:14:50,270 INFO L87 Difference]: Start difference. First operand 129 states and 149 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) [2022-12-14 11:14:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:51,292 INFO L93 Difference]: Finished difference Result 413 states and 513 transitions. [2022-12-14 11:14:51,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 11:14:51,292 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 [2022-12-14 11:14:51,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:51,293 INFO L225 Difference]: With dead ends: 413 [2022-12-14 11:14:51,293 INFO L226 Difference]: Without dead ends: 407 [2022-12-14 11:14:51,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:14:51,294 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 863 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:51,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1907 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:14:51,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-12-14 11:14:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 107. [2022-12-14 11:14:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 106 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 123 transitions. [2022-12-14 11:14:51,346 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 123 transitions. Word has length 68 [2022-12-14 11:14:51,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:51,346 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 123 transitions. [2022-12-14 11:14:51,346 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) [2022-12-14 11:14:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 123 transitions. [2022-12-14 11:14:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 11:14:51,346 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:51,346 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, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:14:51,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 11:14:51,347 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:51,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:51,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1347771711, now seen corresponding path program 1 times [2022-12-14 11:14:51,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:51,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334306271] [2022-12-14 11:14:51,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:51,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:51,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:51,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334306271] [2022-12-14 11:14:51,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334306271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:51,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:51,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:14:51,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520493014] [2022-12-14 11:14:51,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:51,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:14:51,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:51,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:14:51,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:14:51,406 INFO L87 Difference]: Start difference. First operand 107 states and 123 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:51,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:51,523 INFO L93 Difference]: Finished difference Result 177 states and 215 transitions. [2022-12-14 11:14:51,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:14:51,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-12-14 11:14:51,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:51,524 INFO L225 Difference]: With dead ends: 177 [2022-12-14 11:14:51,524 INFO L226 Difference]: Without dead ends: 142 [2022-12-14 11:14:51,524 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 [2022-12-14 11:14:51,524 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 52 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:51,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 232 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:14:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-12-14 11:14:51,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2022-12-14 11:14:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.2) internal successors, (162), 135 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:51,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2022-12-14 11:14:51,609 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 81 [2022-12-14 11:14:51,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:51,609 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2022-12-14 11:14:51,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:51,609 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2022-12-14 11:14:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 11:14:51,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:51,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:14:51,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 11:14:51,610 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:51,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:51,610 INFO L85 PathProgramCache]: Analyzing trace with hash -405318383, now seen corresponding path program 1 times [2022-12-14 11:14:51,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:51,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636661752] [2022-12-14 11:14:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:51,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:51,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:51,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:51,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636661752] [2022-12-14 11:14:51,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636661752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:51,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:51,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:14:51,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441099258] [2022-12-14 11:14:51,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:51,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:14:51,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:51,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:14:51,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:14:51,670 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:51,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:51,860 INFO L93 Difference]: Finished difference Result 264 states and 332 transitions. [2022-12-14 11:14:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:14:51,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-12-14 11:14:51,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:51,861 INFO L225 Difference]: With dead ends: 264 [2022-12-14 11:14:51,861 INFO L226 Difference]: Without dead ends: 200 [2022-12-14 11:14:51,862 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 [2022-12-14 11:14:51,862 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 45 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:51,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 232 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:14:51,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-12-14 11:14:52,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 190. [2022-12-14 11:14:52,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.2380952380952381) internal successors, (234), 189 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:52,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 234 transitions. [2022-12-14 11:14:52,007 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 234 transitions. Word has length 84 [2022-12-14 11:14:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:52,008 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 234 transitions. [2022-12-14 11:14:52,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:52,008 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 234 transitions. [2022-12-14 11:14:52,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 11:14:52,008 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:52,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:14:52,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 11:14:52,008 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash -650880823, now seen corresponding path program 1 times [2022-12-14 11:14:52,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:52,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680054592] [2022-12-14 11:14:52,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:52,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:52,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:52,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680054592] [2022-12-14 11:14:52,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680054592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:52,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:52,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:14:52,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163770844] [2022-12-14 11:14:52,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:52,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:14:52,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:52,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:14:52,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:14:52,063 INFO L87 Difference]: Start difference. First operand 190 states and 234 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:52,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:52,364 INFO L93 Difference]: Finished difference Result 426 states and 548 transitions. [2022-12-14 11:14:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:14:52,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-12-14 11:14:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:52,366 INFO L225 Difference]: With dead ends: 426 [2022-12-14 11:14:52,366 INFO L226 Difference]: Without dead ends: 308 [2022-12-14 11:14:52,366 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 [2022-12-14 11:14:52,366 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 38 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:52,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 232 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:14:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-12-14 11:14:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 290. [2022-12-14 11:14:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.2664359861591696) internal successors, (366), 289 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 366 transitions. [2022-12-14 11:14:52,635 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 366 transitions. Word has length 87 [2022-12-14 11:14:52,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:52,635 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 366 transitions. [2022-12-14 11:14:52,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:52,635 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 366 transitions. [2022-12-14 11:14:52,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 11:14:52,635 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:52,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:14:52,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 11:14:52,636 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:52,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:52,636 INFO L85 PathProgramCache]: Analyzing trace with hash 502988294, now seen corresponding path program 1 times [2022-12-14 11:14:52,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:52,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62957159] [2022-12-14 11:14:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:52,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:52,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:52,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62957159] [2022-12-14 11:14:52,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62957159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:52,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:52,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:14:52,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696966686] [2022-12-14 11:14:52,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:52,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:14:52,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:52,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:14:52,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:14:52,692 INFO L87 Difference]: Start difference. First operand 290 states and 366 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:53,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:53,270 INFO L93 Difference]: Finished difference Result 726 states and 944 transitions. [2022-12-14 11:14:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:14:53,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-12-14 11:14:53,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:53,272 INFO L225 Difference]: With dead ends: 726 [2022-12-14 11:14:53,272 INFO L226 Difference]: Without dead ends: 508 [2022-12-14 11:14:53,272 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 [2022-12-14 11:14:53,272 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 28 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:53,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 232 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:14:53,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-12-14 11:14:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 474. [2022-12-14 11:14:53,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.2811839323467231) internal successors, (606), 473 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:53,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 606 transitions. [2022-12-14 11:14:53,762 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 606 transitions. Word has length 90 [2022-12-14 11:14:53,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:53,762 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 606 transitions. [2022-12-14 11:14:53,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:53,762 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 606 transitions. [2022-12-14 11:14:53,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 11:14:53,762 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:53,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:14:53,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 11:14:53,763 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:53,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:53,763 INFO L85 PathProgramCache]: Analyzing trace with hash 823532023, now seen corresponding path program 1 times [2022-12-14 11:14:53,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:53,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679799574] [2022-12-14 11:14:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:53,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:53,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:53,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679799574] [2022-12-14 11:14:53,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679799574] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:53,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:53,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:14:53,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324595381] [2022-12-14 11:14:53,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:53,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:14:53,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:53,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:14:53,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:14:53,823 INFO L87 Difference]: Start difference. First operand 474 states and 606 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:55,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:55,556 INFO L93 Difference]: Finished difference Result 1778 states and 2304 transitions. [2022-12-14 11:14:55,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 11:14:55,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-12-14 11:14:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:55,559 INFO L225 Difference]: With dead ends: 1778 [2022-12-14 11:14:55,559 INFO L226 Difference]: Without dead ends: 1376 [2022-12-14 11:14:55,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-14 11:14:55,560 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 506 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:55,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 728 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:14:55,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2022-12-14 11:14:56,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 663. [2022-12-14 11:14:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.2734138972809668) internal successors, (843), 662 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:56,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 843 transitions. [2022-12-14 11:14:56,358 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 843 transitions. Word has length 93 [2022-12-14 11:14:56,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:56,359 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 843 transitions. [2022-12-14 11:14:56,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:56,359 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 843 transitions. [2022-12-14 11:14:56,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 11:14:56,359 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:56,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:14:56,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-14 11:14:56,359 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:56,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:56,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1187933713, now seen corresponding path program 1 times [2022-12-14 11:14:56,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:56,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428916499] [2022-12-14 11:14:56,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:56,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:56,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:56,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:56,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428916499] [2022-12-14 11:14:56,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428916499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:56,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:56,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:14:56,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379261219] [2022-12-14 11:14:56,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:56,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:14:56,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:56,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:14:56,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:14:56,477 INFO L87 Difference]: Start difference. First operand 663 states and 843 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:57,357 INFO L93 Difference]: Finished difference Result 1256 states and 1610 transitions. [2022-12-14 11:14:57,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:14:57,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-12-14 11:14:57,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:57,360 INFO L225 Difference]: With dead ends: 1256 [2022-12-14 11:14:57,360 INFO L226 Difference]: Without dead ends: 665 [2022-12-14 11:14:57,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:14:57,361 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 39 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:57,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 282 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:14:57,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-12-14 11:14:58,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 663. [2022-12-14 11:14:58,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.2719033232628398) internal successors, (842), 662 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 842 transitions. [2022-12-14 11:14:58,146 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 842 transitions. Word has length 95 [2022-12-14 11:14:58,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:58,147 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 842 transitions. [2022-12-14 11:14:58,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:58,147 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 842 transitions. [2022-12-14 11:14:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 11:14:58,147 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:58,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:14:58,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 11:14:58,147 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:14:58,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash 748689824, now seen corresponding path program 1 times [2022-12-14 11:14:58,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:58,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732013318] [2022-12-14 11:14:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:58,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:14:58,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:58,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732013318] [2022-12-14 11:14:58,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732013318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:14:58,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:14:58,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:14:58,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041686604] [2022-12-14 11:14:58,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:14:58,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:14:58,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:14:58,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:14:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:14:58,181 INFO L87 Difference]: Start difference. First operand 663 states and 842 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:14:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:59,262 INFO L93 Difference]: Finished difference Result 1496 states and 1920 transitions. [2022-12-14 11:14:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:14:59,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-12-14 11:14:59,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:59,264 INFO L225 Difference]: With dead ends: 1496 [2022-12-14 11:14:59,264 INFO L226 Difference]: Without dead ends: 905 [2022-12-14 11:14:59,265 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 [2022-12-14 11:14:59,265 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 62 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:59,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 179 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:14:59,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-12-14 11:15:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 903. [2022-12-14 11:15:00,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 902 states have (on average 1.26940133037694) internal successors, (1145), 902 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:00,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1145 transitions. [2022-12-14 11:15:00,317 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1145 transitions. Word has length 95 [2022-12-14 11:15:00,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:00,317 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1145 transitions. [2022-12-14 11:15:00,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:00,317 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1145 transitions. [2022-12-14 11:15:00,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 11:15:00,318 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:00,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:00,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 11:15:00,318 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:15:00,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:00,318 INFO L85 PathProgramCache]: Analyzing trace with hash -908407205, now seen corresponding path program 1 times [2022-12-14 11:15:00,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:15:00,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44882265] [2022-12-14 11:15:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:00,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:15:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:00,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:00,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:15:00,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44882265] [2022-12-14 11:15:00,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44882265] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:15:00,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:15:00,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:15:00,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110047076] [2022-12-14 11:15:00,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:15:00,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:15:00,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:15:00,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:15:00,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:15:00,444 INFO L87 Difference]: Start difference. First operand 903 states and 1145 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:02,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:02,209 INFO L93 Difference]: Finished difference Result 1251 states and 1567 transitions. [2022-12-14 11:15:02,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 11:15:02,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-12-14 11:15:02,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:02,212 INFO L225 Difference]: With dead ends: 1251 [2022-12-14 11:15:02,212 INFO L226 Difference]: Without dead ends: 1249 [2022-12-14 11:15:02,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-12-14 11:15:02,212 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 263 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:02,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 744 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:15:02,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-12-14 11:15:03,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 903. [2022-12-14 11:15:03,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 902 states have (on average 1.2516629711751663) internal successors, (1129), 902 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1129 transitions. [2022-12-14 11:15:03,270 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1129 transitions. Word has length 96 [2022-12-14 11:15:03,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:03,271 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1129 transitions. [2022-12-14 11:15:03,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:03,271 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1129 transitions. [2022-12-14 11:15:03,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-14 11:15:03,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:03,271 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:03,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-14 11:15:03,272 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:15:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:03,272 INFO L85 PathProgramCache]: Analyzing trace with hash -43011696, now seen corresponding path program 1 times [2022-12-14 11:15:03,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:15:03,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181369730] [2022-12-14 11:15:03,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:03,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:15:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:03,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:15:03,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:15:03,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181369730] [2022-12-14 11:15:03,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181369730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:15:03,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:15:03,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:15:03,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582814669] [2022-12-14 11:15:03,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:15:03,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:15:03,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:15:03,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:15:03,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:15:03,418 INFO L87 Difference]: Start difference. First operand 903 states and 1129 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:05,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:05,466 INFO L93 Difference]: Finished difference Result 2246 states and 2822 transitions. [2022-12-14 11:15:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 11:15:05,466 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-12-14 11:15:05,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:05,468 INFO L225 Difference]: With dead ends: 2246 [2022-12-14 11:15:05,468 INFO L226 Difference]: Without dead ends: 1409 [2022-12-14 11:15:05,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-12-14 11:15:05,470 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 307 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:05,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 322 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:15:05,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2022-12-14 11:15:06,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 903. [2022-12-14 11:15:06,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 902 states have (on average 1.2505543237250554) internal successors, (1128), 902 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1128 transitions. [2022-12-14 11:15:06,548 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1128 transitions. Word has length 110 [2022-12-14 11:15:06,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:06,548 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1128 transitions. [2022-12-14 11:15:06,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:06,548 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1128 transitions. [2022-12-14 11:15:06,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-14 11:15:06,548 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:06,548 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:06,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-14 11:15:06,549 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:15:06,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:06,549 INFO L85 PathProgramCache]: Analyzing trace with hash 936988651, now seen corresponding path program 1 times [2022-12-14 11:15:06,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:15:06,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754348800] [2022-12-14 11:15:06,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:06,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:15:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:15:07,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:15:07,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754348800] [2022-12-14 11:15:07,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754348800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:15:07,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:15:07,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-14 11:15:07,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185319629] [2022-12-14 11:15:07,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:15:07,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 11:15:07,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:15:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 11:15:07,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-12-14 11:15:07,206 INFO L87 Difference]: Start difference. First operand 903 states and 1128 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:12,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:15:12,192 INFO L93 Difference]: Finished difference Result 3412 states and 4284 transitions. [2022-12-14 11:15:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 11:15:12,193 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-12-14 11:15:12,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:15:12,198 INFO L225 Difference]: With dead ends: 3412 [2022-12-14 11:15:12,198 INFO L226 Difference]: Without dead ends: 2574 [2022-12-14 11:15:12,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=217, Invalid=1115, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 11:15:12,199 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 780 mSDsluCounter, 3823 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 4146 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:15:12,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 4146 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 11:15:12,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-12-14 11:15:13,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 918. [2022-12-14 11:15:13,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 1.2486368593238821) internal successors, (1145), 917 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:13,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1145 transitions. [2022-12-14 11:15:13,314 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1145 transitions. Word has length 112 [2022-12-14 11:15:13,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:15:13,315 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 1145 transitions. [2022-12-14 11:15:13,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:15:13,315 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1145 transitions. [2022-12-14 11:15:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 11:15:13,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:15:13,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:15:13,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-14 11:15:13,315 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 11:15:13,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:15:13,316 INFO L85 PathProgramCache]: Analyzing trace with hash 72496696, now seen corresponding path program 1 times [2022-12-14 11:15:13,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:15:13,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984847530] [2022-12-14 11:15:13,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:13,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:15:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:16,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:15:16,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984847530] [2022-12-14 11:15:16,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984847530] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:15:16,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313118414] [2022-12-14 11:15:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:15:16,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:15:16,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:15:16,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:15:16,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_926f7b66-9861-4a86-bbef-d299e8132e96/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:15:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:15:16,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 69 conjunts are in the unsatisfiable core [2022-12-14 11:15:16,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:15:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:15:24,058 INFO L328 TraceCheckSpWp]: Computing backward predicates...