./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+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta --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 6fcbb6774587cda7a5d573623a9a47b3e351563c8bea7eebdf86bc25d20b8061 --- 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-dbf71c6-m [2022-10-17 17:43:28,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:43:28,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:43:28,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:43:28,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:43:28,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:43:28,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:43:28,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:43:28,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:43:28,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:43:28,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:43:28,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:43:28,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:43:28,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:43:28,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:43:28,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:43:28,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:43:28,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:43:28,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:43:28,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:43:28,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:43:28,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:43:28,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:43:28,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:43:28,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:43:28,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:43:28,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:43:28,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:43:28,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:43:28,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:43:28,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:43:28,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:43:28,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:43:28,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:43:28,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:43:28,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:43:28,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:43:28,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:43:28,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:43:28,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:43:28,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:43:28,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:43:28,217 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:43:28,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:43:28,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:43:28,218 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:43:28,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:43:28,219 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:43:28,219 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:43:28,219 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:43:28,219 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:43:28,220 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:43:28,220 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:43:28,220 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:43:28,220 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:43:28,221 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:43:28,221 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:43:28,221 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:43:28,221 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:43:28,221 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:43:28,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:43:28,222 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:43:28,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:43:28,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:43:28,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:43:28,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:43:28,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:43:28,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:43:28,234 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:43:28,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:43:28,235 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:43:28,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:43:28,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:43:28,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:43:28,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:43:28,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:43:28,237 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:43:28,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:43:28,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:43:28,239 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:43:28,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:43:28,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:43:28,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:43:28,240 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_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fcbb6774587cda7a5d573623a9a47b3e351563c8bea7eebdf86bc25d20b8061 [2022-10-17 17:43:28,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:43:28,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:43:28,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:43:28,562 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:43:28,562 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:43:28,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-10-17 17:43:28,645 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/data/42cc54b5f/e723450bc3b34770896b54b87871b564/FLAG3867f0ead [2022-10-17 17:43:29,265 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:43:29,266 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-10-17 17:43:29,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/data/42cc54b5f/e723450bc3b34770896b54b87871b564/FLAG3867f0ead [2022-10-17 17:43:29,466 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/data/42cc54b5f/e723450bc3b34770896b54b87871b564 [2022-10-17 17:43:29,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:43:29,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:43:29,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:43:29,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:43:29,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:43:29,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:43:29" (1/1) ... [2022-10-17 17:43:29,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3288f5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:29, skipping insertion in model container [2022-10-17 17:43:29,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:43:29" (1/1) ... [2022-10-17 17:43:29,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:43:29,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:43:30,009 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8891,8904] [2022-10-17 17:43:30,051 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12143,12156] [2022-10-17 17:43:30,070 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13299,13312] [2022-10-17 17:43:30,084 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13955,13968] [2022-10-17 17:43:30,103 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15434,15447] [2022-10-17 17:43:30,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16090,16103] [2022-10-17 17:43:30,126 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17074,17087] [2022-10-17 17:43:30,152 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19370,19383] [2022-10-17 17:43:30,164 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20029,20042] [2022-10-17 17:43:30,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21011,21024] [2022-10-17 17:43:30,184 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22802,22815] [2022-10-17 17:43:30,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:43:30,273 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:43:30,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8891,8904] [2022-10-17 17:43:30,358 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12143,12156] [2022-10-17 17:43:30,367 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13299,13312] [2022-10-17 17:43:30,371 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13955,13968] [2022-10-17 17:43:30,377 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15434,15447] [2022-10-17 17:43:30,380 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16090,16103] [2022-10-17 17:43:30,385 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17074,17087] [2022-10-17 17:43:30,393 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19370,19383] [2022-10-17 17:43:30,397 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20029,20042] [2022-10-17 17:43:30,401 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21011,21024] [2022-10-17 17:43:30,408 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22802,22815] [2022-10-17 17:43:30,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:43:30,479 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:43:30,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30 WrapperNode [2022-10-17 17:43:30,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:43:30,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:43:30,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:43:30,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:43:30,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30" (1/1) ... [2022-10-17 17:43:30,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30" (1/1) ... [2022-10-17 17:43:30,598 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1788 [2022-10-17 17:43:30,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:43:30,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:43:30,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:43:30,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:43:30,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30" (1/1) ... [2022-10-17 17:43:30,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30" (1/1) ... [2022-10-17 17:43:30,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30" (1/1) ... [2022-10-17 17:43:30,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30" (1/1) ... [2022-10-17 17:43:30,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30" (1/1) ... [2022-10-17 17:43:30,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30" (1/1) ... [2022-10-17 17:43:30,724 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30" (1/1) ... [2022-10-17 17:43:30,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30" (1/1) ... [2022-10-17 17:43:30,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:43:30,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:43:30,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:43:30,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:43:30,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30" (1/1) ... [2022-10-17 17:43:30,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:43:30,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:43:30,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:43:30,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b76c2d-cdd5-4f8d-8a1b-590f94d523ed/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:43:30,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:43:30,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:43:30,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:43:30,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:43:31,077 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:43:31,079 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:43:32,555 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:43:32,710 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:43:32,710 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:43:32,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:43:32 BoogieIcfgContainer [2022-10-17 17:43:32,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:43:32,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:43:32,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:43:32,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:43:32,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:43:29" (1/3) ... [2022-10-17 17:43:32,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26128262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:43:32, skipping insertion in model container [2022-10-17 17:43:32,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:43:30" (2/3) ... [2022-10-17 17:43:32,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26128262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:43:32, skipping insertion in model container [2022-10-17 17:43:32,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:43:32" (3/3) ... [2022-10-17 17:43:32,730 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-10-17 17:43:32,750 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:43:32,751 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-10-17 17:43:32,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:43:32,843 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;@b4209cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:43:32,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-10-17 17:43:32,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 324 states have (on average 1.845679012345679) internal successors, (598), 335 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:32,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-17 17:43:32,868 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:32,869 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] [2022-10-17 17:43:32,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:32,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:32,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1432511949, now seen corresponding path program 1 times [2022-10-17 17:43:32,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:32,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948289795] [2022-10-17 17:43:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:32,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:33,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:33,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948289795] [2022-10-17 17:43:33,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948289795] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:33,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:33,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:43:33,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877242759] [2022-10-17 17:43:33,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:33,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:43:33,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:33,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:43:33,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:43:33,674 INFO L87 Difference]: Start difference. First operand has 336 states, 324 states have (on average 1.845679012345679) internal successors, (598), 335 states have internal predecessors, (598), 0 states have call successors, (0), 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 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:34,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:34,174 INFO L93 Difference]: Finished difference Result 526 states and 899 transitions. [2022-10-17 17:43:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:43:34,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-10-17 17:43:34,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:34,195 INFO L225 Difference]: With dead ends: 526 [2022-10-17 17:43:34,198 INFO L226 Difference]: Without dead ends: 282 [2022-10-17 17:43:34,205 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 [2022-10-17 17:43:34,210 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 1345 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:34,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 354 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:43:34,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-10-17 17:43:34,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-10-17 17:43:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 271 states have (on average 1.2583025830258303) internal successors, (341), 281 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:34,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 341 transitions. [2022-10-17 17:43:34,330 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 341 transitions. Word has length 57 [2022-10-17 17:43:34,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:34,331 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 341 transitions. [2022-10-17 17:43:34,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:34,332 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 341 transitions. [2022-10-17 17:43:34,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-17 17:43:34,335 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:34,336 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] [2022-10-17 17:43:34,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:43:34,337 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:34,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:34,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1451472122, now seen corresponding path program 1 times [2022-10-17 17:43:34,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:34,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705059983] [2022-10-17 17:43:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:34,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:34,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:34,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705059983] [2022-10-17 17:43:34,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705059983] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:34,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:34,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:43:34,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138742363] [2022-10-17 17:43:34,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:34,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:43:34,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:43:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:43:34,642 INFO L87 Difference]: Start difference. First operand 282 states and 341 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) [2022-10-17 17:43:34,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:34,905 INFO L93 Difference]: Finished difference Result 466 states and 577 transitions. [2022-10-17 17:43:34,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:43:34,914 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 [2022-10-17 17:43:34,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:34,920 INFO L225 Difference]: With dead ends: 466 [2022-10-17 17:43:34,920 INFO L226 Difference]: Without dead ends: 247 [2022-10-17 17:43:34,922 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 [2022-10-17 17:43:34,923 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 865 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:34,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 181 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:43:34,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-10-17 17:43:34,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2022-10-17 17:43:34,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 236 states have (on average 1.2754237288135593) internal successors, (301), 246 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 301 transitions. [2022-10-17 17:43:34,966 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 301 transitions. Word has length 58 [2022-10-17 17:43:34,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:34,987 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 301 transitions. [2022-10-17 17:43:34,987 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) [2022-10-17 17:43:34,988 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 301 transitions. [2022-10-17 17:43:34,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-10-17 17:43:34,996 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:34,997 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] [2022-10-17 17:43:34,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:43:34,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:34,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:34,998 INFO L85 PathProgramCache]: Analyzing trace with hash 659385937, now seen corresponding path program 1 times [2022-10-17 17:43:34,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:35,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374123800] [2022-10-17 17:43:35,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:35,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:35,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:35,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374123800] [2022-10-17 17:43:35,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374123800] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:35,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:35,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:43:35,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495563842] [2022-10-17 17:43:35,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:35,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:43:35,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:35,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:43:35,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:43:35,195 INFO L87 Difference]: Start difference. First operand 247 states and 301 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) [2022-10-17 17:43:35,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:35,438 INFO L93 Difference]: Finished difference Result 431 states and 536 transitions. [2022-10-17 17:43:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:43:35,439 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 [2022-10-17 17:43:35,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:35,441 INFO L225 Difference]: With dead ends: 431 [2022-10-17 17:43:35,441 INFO L226 Difference]: Without dead ends: 237 [2022-10-17 17:43:35,445 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 [2022-10-17 17:43:35,450 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 773 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:35,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 174 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:43:35,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-10-17 17:43:35,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-10-17 17:43:35,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 226 states have (on average 1.2743362831858407) internal successors, (288), 236 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 288 transitions. [2022-10-17 17:43:35,476 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 288 transitions. Word has length 59 [2022-10-17 17:43:35,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:35,478 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 288 transitions. [2022-10-17 17:43:35,479 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) [2022-10-17 17:43:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 288 transitions. [2022-10-17 17:43:35,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-17 17:43:35,481 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:35,482 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] [2022-10-17 17:43:35,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:43:35,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1543164138, now seen corresponding path program 1 times [2022-10-17 17:43:35,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:35,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234917706] [2022-10-17 17:43:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:35,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:35,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:35,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234917706] [2022-10-17 17:43:35,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234917706] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:35,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:35,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:43:35,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422460186] [2022-10-17 17:43:35,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:35,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:43:35,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:35,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:43:35,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:43:35,678 INFO L87 Difference]: Start difference. First operand 237 states and 288 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 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) [2022-10-17 17:43:35,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:35,899 INFO L93 Difference]: Finished difference Result 421 states and 522 transitions. [2022-10-17 17:43:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:43:35,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 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 [2022-10-17 17:43:35,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:35,902 INFO L225 Difference]: With dead ends: 421 [2022-10-17 17:43:35,902 INFO L226 Difference]: Without dead ends: 226 [2022-10-17 17:43:35,903 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 [2022-10-17 17:43:35,906 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 773 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:35,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 169 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:43:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-10-17 17:43:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-10-17 17:43:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 215 states have (on average 1.2790697674418605) internal successors, (275), 225 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:35,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 275 transitions. [2022-10-17 17:43:35,933 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 275 transitions. Word has length 60 [2022-10-17 17:43:35,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:35,933 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 275 transitions. [2022-10-17 17:43:35,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 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) [2022-10-17 17:43:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 275 transitions. [2022-10-17 17:43:35,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-17 17:43:35,936 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:35,937 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] [2022-10-17 17:43:35,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:43:35,938 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:35,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:35,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1012719179, now seen corresponding path program 1 times [2022-10-17 17:43:35,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:35,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070844080] [2022-10-17 17:43:35,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:35,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:36,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:36,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070844080] [2022-10-17 17:43:36,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070844080] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:36,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:36,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:43:36,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38057999] [2022-10-17 17:43:36,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:36,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:43:36,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:36,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:43:36,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:43:36,340 INFO L87 Difference]: Start difference. First operand 226 states and 275 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:37,069 INFO L93 Difference]: Finished difference Result 484 states and 601 transitions. [2022-10-17 17:43:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 17:43:37,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-10-17 17:43:37,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:37,074 INFO L225 Difference]: With dead ends: 484 [2022-10-17 17:43:37,074 INFO L226 Difference]: Without dead ends: 415 [2022-10-17 17:43:37,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-10-17 17:43:37,077 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 839 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:37,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 751 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 17:43:37,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-10-17 17:43:37,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 226. [2022-10-17 17:43:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 215 states have (on average 1.2744186046511627) internal successors, (274), 225 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) [2022-10-17 17:43:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 274 transitions. [2022-10-17 17:43:37,110 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 274 transitions. Word has length 61 [2022-10-17 17:43:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:37,112 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 274 transitions. [2022-10-17 17:43:37,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 274 transitions. [2022-10-17 17:43:37,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-17 17:43:37,114 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:37,114 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] [2022-10-17 17:43:37,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:43:37,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:37,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:37,116 INFO L85 PathProgramCache]: Analyzing trace with hash 603873951, now seen corresponding path program 1 times [2022-10-17 17:43:37,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:37,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990330744] [2022-10-17 17:43:37,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:37,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:37,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:37,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990330744] [2022-10-17 17:43:37,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990330744] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:37,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:37,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:43:37,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117160428] [2022-10-17 17:43:37,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:37,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:43:37,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:43:37,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:43:37,542 INFO L87 Difference]: Start difference. First operand 226 states and 274 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:38,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:38,412 INFO L93 Difference]: Finished difference Result 458 states and 567 transitions. [2022-10-17 17:43:38,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 17:43:38,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-10-17 17:43:38,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:38,415 INFO L225 Difference]: With dead ends: 458 [2022-10-17 17:43:38,415 INFO L226 Difference]: Without dead ends: 411 [2022-10-17 17:43:38,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-10-17 17:43:38,419 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 957 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:38,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 1095 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 17:43:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-10-17 17:43:38,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 226. [2022-10-17 17:43:38,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 215 states have (on average 1.2697674418604652) internal successors, (273), 225 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) [2022-10-17 17:43:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 273 transitions. [2022-10-17 17:43:38,459 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 273 transitions. Word has length 61 [2022-10-17 17:43:38,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:38,460 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 273 transitions. [2022-10-17 17:43:38,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 273 transitions. [2022-10-17 17:43:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-17 17:43:38,461 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:38,461 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] [2022-10-17 17:43:38,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 17:43:38,462 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:38,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:38,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1551029823, now seen corresponding path program 1 times [2022-10-17 17:43:38,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:38,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040803777] [2022-10-17 17:43:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:38,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:38,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:38,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040803777] [2022-10-17 17:43:38,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040803777] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:38,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:38,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 17:43:38,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661391313] [2022-10-17 17:43:38,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:38,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 17:43:38,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:38,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 17:43:38,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-10-17 17:43:38,938 INFO L87 Difference]: Start difference. First operand 226 states and 273 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:39,739 INFO L93 Difference]: Finished difference Result 486 states and 600 transitions. [2022-10-17 17:43:39,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:43:39,740 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-10-17 17:43:39,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:39,744 INFO L225 Difference]: With dead ends: 486 [2022-10-17 17:43:39,744 INFO L226 Difference]: Without dead ends: 411 [2022-10-17 17:43:39,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-10-17 17:43:39,746 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 965 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:39,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 962 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 17:43:39,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-10-17 17:43:39,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 226. [2022-10-17 17:43:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 215 states have (on average 1.2651162790697674) internal successors, (272), 225 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) [2022-10-17 17:43:39,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 272 transitions. [2022-10-17 17:43:39,787 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 272 transitions. Word has length 61 [2022-10-17 17:43:39,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:39,788 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 272 transitions. [2022-10-17 17:43:39,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:39,789 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 272 transitions. [2022-10-17 17:43:39,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-17 17:43:39,790 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:39,790 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] [2022-10-17 17:43:39,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 17:43:39,790 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:39,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash -427677757, now seen corresponding path program 1 times [2022-10-17 17:43:39,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:39,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179754646] [2022-10-17 17:43:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:39,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:40,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:40,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179754646] [2022-10-17 17:43:40,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179754646] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:40,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:40,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:43:40,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740618216] [2022-10-17 17:43:40,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:40,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:43:40,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:40,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:43:40,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:43:40,163 INFO L87 Difference]: Start difference. First operand 226 states and 272 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:40,609 INFO L93 Difference]: Finished difference Result 427 states and 505 transitions. [2022-10-17 17:43:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 17:43:40,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-10-17 17:43:40,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:40,612 INFO L225 Difference]: With dead ends: 427 [2022-10-17 17:43:40,613 INFO L226 Difference]: Without dead ends: 313 [2022-10-17 17:43:40,613 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 [2022-10-17 17:43:40,614 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1039 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:40,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 506 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:43:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-10-17 17:43:40,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 226. [2022-10-17 17:43:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 215 states have (on average 1.2604651162790699) internal successors, (271), 225 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) [2022-10-17 17:43:40,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 271 transitions. [2022-10-17 17:43:40,661 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 271 transitions. Word has length 61 [2022-10-17 17:43:40,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:40,662 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 271 transitions. [2022-10-17 17:43:40,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:40,662 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 271 transitions. [2022-10-17 17:43:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 17:43:40,665 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:40,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:43:40,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 17:43:40,668 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:40,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:40,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1026541166, now seen corresponding path program 1 times [2022-10-17 17:43:40,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:40,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871548851] [2022-10-17 17:43:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:40,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:41,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:41,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871548851] [2022-10-17 17:43:41,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871548851] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:41,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:41,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:43:41,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901305590] [2022-10-17 17:43:41,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:41,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:43:41,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:41,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:43:41,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:43:41,125 INFO L87 Difference]: Start difference. First operand 226 states and 271 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:42,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:42,004 INFO L93 Difference]: Finished difference Result 443 states and 539 transitions. [2022-10-17 17:43:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 17:43:42,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-10-17 17:43:42,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:42,007 INFO L225 Difference]: With dead ends: 443 [2022-10-17 17:43:42,008 INFO L226 Difference]: Without dead ends: 403 [2022-10-17 17:43:42,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-10-17 17:43:42,009 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 889 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:42,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1005 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 17:43:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-10-17 17:43:42,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 226. [2022-10-17 17:43:42,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 215 states have (on average 1.255813953488372) internal successors, (270), 225 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) [2022-10-17 17:43:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 270 transitions. [2022-10-17 17:43:42,056 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 270 transitions. Word has length 63 [2022-10-17 17:43:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:42,056 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 270 transitions. [2022-10-17 17:43:42,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 270 transitions. [2022-10-17 17:43:42,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 17:43:42,057 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:42,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:43:42,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 17:43:42,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:42,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:42,059 INFO L85 PathProgramCache]: Analyzing trace with hash 885655936, now seen corresponding path program 1 times [2022-10-17 17:43:42,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:42,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014980667] [2022-10-17 17:43:42,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:42,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:42,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:42,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014980667] [2022-10-17 17:43:42,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014980667] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:42,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:42,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:43:42,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858548033] [2022-10-17 17:43:42,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:42,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:43:42,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:42,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:43:42,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:43:42,389 INFO L87 Difference]: Start difference. First operand 226 states and 270 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:43,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:43,234 INFO L93 Difference]: Finished difference Result 463 states and 567 transitions. [2022-10-17 17:43:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 17:43:43,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-10-17 17:43:43,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:43,238 INFO L225 Difference]: With dead ends: 463 [2022-10-17 17:43:43,238 INFO L226 Difference]: Without dead ends: 411 [2022-10-17 17:43:43,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-10-17 17:43:43,240 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 681 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:43,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1005 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 17:43:43,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-10-17 17:43:43,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 226. [2022-10-17 17:43:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 215 states have (on average 1.2511627906976743) internal successors, (269), 225 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) [2022-10-17 17:43:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 269 transitions. [2022-10-17 17:43:43,287 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 269 transitions. Word has length 63 [2022-10-17 17:43:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:43,287 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 269 transitions. [2022-10-17 17:43:43,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:43,288 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 269 transitions. [2022-10-17 17:43:43,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 17:43:43,289 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:43,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:43:43,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 17:43:43,289 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:43,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:43,293 INFO L85 PathProgramCache]: Analyzing trace with hash -515644867, now seen corresponding path program 1 times [2022-10-17 17:43:43,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:43,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225641690] [2022-10-17 17:43:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:43,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:43,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:43,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225641690] [2022-10-17 17:43:43,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225641690] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:43,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:43,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:43:43,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375685728] [2022-10-17 17:43:43,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:43,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:43:43,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:43,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:43:43,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:43:43,632 INFO L87 Difference]: Start difference. First operand 226 states and 269 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:44,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:44,403 INFO L93 Difference]: Finished difference Result 440 states and 534 transitions. [2022-10-17 17:43:44,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 17:43:44,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-10-17 17:43:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:44,407 INFO L225 Difference]: With dead ends: 440 [2022-10-17 17:43:44,407 INFO L226 Difference]: Without dead ends: 403 [2022-10-17 17:43:44,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-10-17 17:43:44,409 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 995 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:44,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 848 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 17:43:44,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-10-17 17:43:44,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 226. [2022-10-17 17:43:44,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 215 states have (on average 1.2465116279069768) internal successors, (268), 225 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) [2022-10-17 17:43:44,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 268 transitions. [2022-10-17 17:43:44,461 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 268 transitions. Word has length 63 [2022-10-17 17:43:44,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:44,461 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 268 transitions. [2022-10-17 17:43:44,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:44,462 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 268 transitions. [2022-10-17 17:43:44,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 17:43:44,463 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:44,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:43:44,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 17:43:44,464 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:44,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:44,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1781677741, now seen corresponding path program 1 times [2022-10-17 17:43:44,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:44,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030184227] [2022-10-17 17:43:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:44,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:44,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:44,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030184227] [2022-10-17 17:43:44,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030184227] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:44,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:44,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:43:44,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994699814] [2022-10-17 17:43:44,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:44,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:43:44,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:44,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:43:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:43:44,782 INFO L87 Difference]: Start difference. First operand 226 states and 268 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:45,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:45,611 INFO L93 Difference]: Finished difference Result 408 states and 489 transitions. [2022-10-17 17:43:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 17:43:45,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-10-17 17:43:45,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:45,615 INFO L225 Difference]: With dead ends: 408 [2022-10-17 17:43:45,615 INFO L226 Difference]: Without dead ends: 403 [2022-10-17 17:43:45,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-10-17 17:43:45,617 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 958 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:45,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 898 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 17:43:45,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-10-17 17:43:45,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 226. [2022-10-17 17:43:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 215 states have (on average 1.241860465116279) internal successors, (267), 225 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) [2022-10-17 17:43:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 267 transitions. [2022-10-17 17:43:45,672 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 267 transitions. Word has length 63 [2022-10-17 17:43:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:45,672 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 267 transitions. [2022-10-17 17:43:45,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 267 transitions. [2022-10-17 17:43:45,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 17:43:45,674 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:45,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:43:45,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 17:43:45,675 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:45,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:45,676 INFO L85 PathProgramCache]: Analyzing trace with hash 100501655, now seen corresponding path program 1 times [2022-10-17 17:43:45,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:45,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425694197] [2022-10-17 17:43:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:45,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:45,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:45,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425694197] [2022-10-17 17:43:45,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425694197] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:45,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:45,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:43:45,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471217133] [2022-10-17 17:43:46,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:46,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:43:46,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:46,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:43:46,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:43:46,002 INFO L87 Difference]: Start difference. First operand 226 states and 267 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:46,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:46,797 INFO L93 Difference]: Finished difference Result 408 states and 487 transitions. [2022-10-17 17:43:46,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 17:43:46,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-10-17 17:43:46,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:46,800 INFO L225 Difference]: With dead ends: 408 [2022-10-17 17:43:46,800 INFO L226 Difference]: Without dead ends: 403 [2022-10-17 17:43:46,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-10-17 17:43:46,802 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 873 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:46,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1107 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 17:43:46,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-10-17 17:43:46,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 226. [2022-10-17 17:43:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 215 states have (on average 1.2372093023255815) internal successors, (266), 225 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) [2022-10-17 17:43:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 266 transitions. [2022-10-17 17:43:46,860 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 266 transitions. Word has length 63 [2022-10-17 17:43:46,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:46,860 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 266 transitions. [2022-10-17 17:43:46,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:46,861 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 266 transitions. [2022-10-17 17:43:46,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 17:43:46,862 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:46,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:43:46,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 17:43:46,863 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:46,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:46,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2012698757, now seen corresponding path program 1 times [2022-10-17 17:43:46,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:46,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451288255] [2022-10-17 17:43:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:46,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:47,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:47,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451288255] [2022-10-17 17:43:47,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451288255] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:47,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:47,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:43:47,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807254035] [2022-10-17 17:43:47,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:47,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:43:47,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:47,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:43:47,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:43:47,244 INFO L87 Difference]: Start difference. First operand 226 states and 266 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:48,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:48,083 INFO L93 Difference]: Finished difference Result 428 states and 515 transitions. [2022-10-17 17:43:48,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 17:43:48,084 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-10-17 17:43:48,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:48,087 INFO L225 Difference]: With dead ends: 428 [2022-10-17 17:43:48,087 INFO L226 Difference]: Without dead ends: 411 [2022-10-17 17:43:48,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-10-17 17:43:48,088 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 886 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:48,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1322 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 17:43:48,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-10-17 17:43:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 226. [2022-10-17 17:43:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 215 states have (on average 1.2325581395348837) internal successors, (265), 225 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) [2022-10-17 17:43:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 265 transitions. [2022-10-17 17:43:48,141 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 265 transitions. Word has length 63 [2022-10-17 17:43:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:48,142 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 265 transitions. [2022-10-17 17:43:48,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:48,142 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 265 transitions. [2022-10-17 17:43:48,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-17 17:43:48,143 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:48,143 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, 1] [2022-10-17 17:43:48,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-17 17:43:48,144 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:48,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:48,144 INFO L85 PathProgramCache]: Analyzing trace with hash -522081681, now seen corresponding path program 1 times [2022-10-17 17:43:48,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:48,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862769143] [2022-10-17 17:43:48,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:48,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:48,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:48,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862769143] [2022-10-17 17:43:48,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862769143] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:48,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:48,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 17:43:48,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298162883] [2022-10-17 17:43:48,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:48,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 17:43:48,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:48,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 17:43:48,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-10-17 17:43:48,910 INFO L87 Difference]: Start difference. First operand 226 states and 265 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 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) [2022-10-17 17:43:50,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:43:50,808 INFO L93 Difference]: Finished difference Result 525 states and 604 transitions. [2022-10-17 17:43:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-17 17:43:50,809 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 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 [2022-10-17 17:43:50,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:43:50,812 INFO L225 Difference]: With dead ends: 525 [2022-10-17 17:43:50,812 INFO L226 Difference]: Without dead ends: 486 [2022-10-17 17:43:50,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2022-10-17 17:43:50,814 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1162 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-17 17:43:50,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 2238 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-17 17:43:50,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-10-17 17:43:50,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 222. [2022-10-17 17:43:50,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 212 states have (on average 1.2264150943396226) internal successors, (260), 221 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:43:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 260 transitions. [2022-10-17 17:43:50,892 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 260 transitions. Word has length 65 [2022-10-17 17:43:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:43:50,892 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 260 transitions. [2022-10-17 17:43:50,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 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) [2022-10-17 17:43:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 260 transitions. [2022-10-17 17:43:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-17 17:43:50,894 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:43:50,894 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] [2022-10-17 17:43:50,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-17 17:43:50,895 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 17:43:50,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:43:50,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1992368467, now seen corresponding path program 1 times [2022-10-17 17:43:50,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:43:50,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116804521] [2022-10-17 17:43:50,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:43:50,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:43:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:43:52,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:43:52,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:43:52,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116804521] [2022-10-17 17:43:52,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116804521] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:43:52,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:43:52,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-10-17 17:43:52,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924769708] [2022-10-17 17:43:52,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:43:52,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-17 17:43:52,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:43:52,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-17 17:43:52,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-10-17 17:43:52,516 INFO L87 Difference]: Start difference. First operand 222 states and 260 transitions. Second operand has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 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)