./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW --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 1538db88747c173720a51ea136bd420db033fa3c052c219d34d6c24c09240f56 --- 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-4e7fbc6 [2022-11-23 15:39:25,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:39:25,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:39:25,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:39:25,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:39:25,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:39:25,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:39:25,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:39:25,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:39:25,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:39:25,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:39:25,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:39:25,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:39:25,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:39:25,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:39:25,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:39:25,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:39:25,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:39:25,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:39:25,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:39:25,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:39:25,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:39:25,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:39:25,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:39:25,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:39:25,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:39:25,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:39:25,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:39:25,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:39:25,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:39:25,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:39:25,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:39:25,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:39:25,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:39:25,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:39:25,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:39:25,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:39:25,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:39:25,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:39:25,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:39:25,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:39:25,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:39:25,259 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:39:25,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:39:25,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:39:25,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:39:25,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:39:25,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:39:25,263 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:39:25,263 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:39:25,264 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:39:25,264 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:39:25,264 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:39:25,265 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:39:25,265 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:39:25,266 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:39:25,266 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:39:25,266 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:39:25,267 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:39:25,267 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:39:25,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:39:25,269 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:39:25,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:39:25,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:39:25,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:39:25,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:39:25,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:39:25,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:39:25,271 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:39:25,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:39:25,272 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:39:25,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:39:25,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:39:25,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:39:25,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:39:25,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:39:25,274 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:39:25,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:39:25,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:39:25,275 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:39:25,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:39:25,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:39:25,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:39:25,277 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_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1538db88747c173720a51ea136bd420db033fa3c052c219d34d6c24c09240f56 [2022-11-23 15:39:25,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:39:25,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:39:25,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:39:25,676 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:39:25,677 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:39:25,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-23 15:39:29,614 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:39:30,136 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:39:30,137 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-23 15:39:30,164 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW/data/fd6157563/63a33b97b2914413be3f799c2f19c302/FLAG3473752b5 [2022-11-23 15:39:30,193 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW/data/fd6157563/63a33b97b2914413be3f799c2f19c302 [2022-11-23 15:39:30,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:39:30,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:39:30,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:39:30,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:39:30,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:39:30,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:39:30" (1/1) ... [2022-11-23 15:39:30,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632d7910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:30, skipping insertion in model container [2022-11-23 15:39:30,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:39:30" (1/1) ... [2022-11-23 15:39:30,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:39:30,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:39:31,372 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31348,31361] [2022-11-23 15:39:31,410 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[32238,32251] [2022-11-23 15:39:31,458 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[33897,33910] [2022-11-23 15:39:31,490 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34787,34800] [2022-11-23 15:39:31,555 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37218,37231] [2022-11-23 15:39:31,581 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[38111,38124] [2022-11-23 15:39:31,616 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[39773,39786] [2022-11-23 15:39:31,643 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[41134,41147] [2022-11-23 15:39:31,888 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[54998,55011] [2022-11-23 15:39:31,915 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[55891,55904] [2022-11-23 15:39:31,965 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[57553,57566] [2022-11-23 15:39:32,063 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[61710,61723] [2022-11-23 15:39:32,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:39:32,362 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:39:32,773 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31348,31361] [2022-11-23 15:39:32,796 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[32238,32251] [2022-11-23 15:39:32,834 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[33897,33910] [2022-11-23 15:39:32,857 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34787,34800] [2022-11-23 15:39:32,903 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37218,37231] [2022-11-23 15:39:32,925 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[38111,38124] [2022-11-23 15:39:32,960 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[39773,39786] [2022-11-23 15:39:32,996 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[41134,41147] [2022-11-23 15:39:33,180 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[54998,55011] [2022-11-23 15:39:33,201 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[55891,55904] [2022-11-23 15:39:33,234 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[57553,57566] [2022-11-23 15:39:33,307 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[61710,61723] [2022-11-23 15:39:33,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:39:33,478 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:39:33,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:33 WrapperNode [2022-11-23 15:39:33,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:39:33,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:39:33,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:39:33,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:39:33,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:33" (1/1) ... [2022-11-23 15:39:33,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:33" (1/1) ... [2022-11-23 15:39:33,642 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3772 [2022-11-23 15:39:33,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:39:33,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:39:33,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:39:33,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:39:33,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:33" (1/1) ... [2022-11-23 15:39:33,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:33" (1/1) ... [2022-11-23 15:39:33,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:33" (1/1) ... [2022-11-23 15:39:33,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:33" (1/1) ... [2022-11-23 15:39:33,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:33" (1/1) ... [2022-11-23 15:39:33,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:33" (1/1) ... [2022-11-23 15:39:33,806 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:33" (1/1) ... [2022-11-23 15:39:33,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:33" (1/1) ... [2022-11-23 15:39:33,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:39:33,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:39:33,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:39:33,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:39:33,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:33" (1/1) ... [2022-11-23 15:39:33,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:39:33,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:39:33,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:39:33,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4784a40-da15-4f31-8883-afc0e01c3b61/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:39:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:39:33,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:39:33,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:39:33,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:39:34,227 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:39:34,229 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:39:37,736 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:39:39,186 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:39:39,187 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:39:39,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:39:39 BoogieIcfgContainer [2022-11-23 15:39:39,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:39:39,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:39:39,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:39:39,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:39:39,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:39:30" (1/3) ... [2022-11-23 15:39:39,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d39bec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:39:39, skipping insertion in model container [2022-11-23 15:39:39,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:39:33" (2/3) ... [2022-11-23 15:39:39,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d39bec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:39:39, skipping insertion in model container [2022-11-23 15:39:39,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:39:39" (3/3) ... [2022-11-23 15:39:39,210 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-23 15:39:39,237 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:39:39,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-23 15:39:39,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:39:39,366 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;@1f774038, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:39:39,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-23 15:39:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 688 states, 675 states have (on average 1.7422222222222221) internal successors, (1176), 687 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:39,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-23 15:39:39,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:39,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:39:39,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-23 15:39:39,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:39,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1370923563, now seen corresponding path program 1 times [2022-11-23 15:39:39,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:39,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194830910] [2022-11-23 15:39:39,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:39,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:39:44,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:44,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194830910] [2022-11-23 15:39:44,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194830910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:44,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:39:44,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:39:44,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592602000] [2022-11-23 15:39:44,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:44,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:39:44,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:44,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:39:44,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:39:44,835 INFO L87 Difference]: Start difference. First operand has 688 states, 675 states have (on average 1.7422222222222221) internal successors, (1176), 687 states have internal predecessors, (1176), 0 states have call successors, (0), 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 6 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:46,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:46,573 INFO L93 Difference]: Finished difference Result 1870 states and 3181 transitions. [2022-11-23 15:39:46,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:39:46,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2022-11-23 15:39:46,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:46,602 INFO L225 Difference]: With dead ends: 1870 [2022-11-23 15:39:46,602 INFO L226 Difference]: Without dead ends: 1439 [2022-11-23 15:39:46,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:39:46,613 INFO L413 NwaCegarLoop]: 1220 mSDtfsCounter, 1942 mSDsluCounter, 3536 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1942 SdHoareTripleChecker+Valid, 4756 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:46,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1942 Valid, 4756 Invalid, 610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 15:39:46,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2022-11-23 15:39:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1307. [2022-11-23 15:39:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1295 states have (on average 1.4254826254826254) internal successors, (1846), 1306 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1846 transitions. [2022-11-23 15:39:46,868 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1846 transitions. Word has length 249 [2022-11-23 15:39:46,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:46,875 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1846 transitions. [2022-11-23 15:39:46,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:46,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1846 transitions. [2022-11-23 15:39:46,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-23 15:39:46,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:46,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:39:46,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:39:46,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-23 15:39:46,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:46,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1854204174, now seen corresponding path program 1 times [2022-11-23 15:39:46,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:46,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464568839] [2022-11-23 15:39:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:46,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:39:48,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:48,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464568839] [2022-11-23 15:39:48,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464568839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:48,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:39:48,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:39:48,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596166934] [2022-11-23 15:39:48,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:48,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:39:48,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:48,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:39:48,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:39:48,332 INFO L87 Difference]: Start difference. First operand 1307 states and 1846 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:49,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:49,234 INFO L93 Difference]: Finished difference Result 3865 states and 5451 transitions. [2022-11-23 15:39:49,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:39:49,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2022-11-23 15:39:49,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:49,248 INFO L225 Difference]: With dead ends: 3865 [2022-11-23 15:39:49,248 INFO L226 Difference]: Without dead ends: 2567 [2022-11-23 15:39:49,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:39:49,255 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 1973 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:49,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 2322 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:39:49,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2022-11-23 15:39:49,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2494. [2022-11-23 15:39:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 2482 states have (on average 1.4250604351329572) internal successors, (3537), 2493 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:49,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 3537 transitions. [2022-11-23 15:39:49,697 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 3537 transitions. Word has length 249 [2022-11-23 15:39:49,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:49,698 INFO L495 AbstractCegarLoop]: Abstraction has 2494 states and 3537 transitions. [2022-11-23 15:39:49,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:49,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 3537 transitions. [2022-11-23 15:39:49,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-23 15:39:49,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:49,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:39:49,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:39:49,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-23 15:39:49,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1661714778, now seen corresponding path program 1 times [2022-11-23 15:39:49,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:49,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763802650] [2022-11-23 15:39:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:49,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:39:50,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:50,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763802650] [2022-11-23 15:39:50,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763802650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:50,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:39:50,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:39:50,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570884649] [2022-11-23 15:39:50,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:50,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:39:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:50,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:39:50,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:39:50,042 INFO L87 Difference]: Start difference. First operand 2494 states and 3537 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:51,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:51,206 INFO L93 Difference]: Finished difference Result 7265 states and 10277 transitions. [2022-11-23 15:39:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:39:51,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 251 [2022-11-23 15:39:51,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:51,231 INFO L225 Difference]: With dead ends: 7265 [2022-11-23 15:39:51,231 INFO L226 Difference]: Without dead ends: 4892 [2022-11-23 15:39:51,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:39:51,237 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 822 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:51,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 2490 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:39:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2022-11-23 15:39:51,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 4819. [2022-11-23 15:39:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4819 states, 4807 states have (on average 1.4227168712294571) internal successors, (6839), 4818 states have internal predecessors, (6839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4819 states to 4819 states and 6839 transitions. [2022-11-23 15:39:51,957 INFO L78 Accepts]: Start accepts. Automaton has 4819 states and 6839 transitions. Word has length 251 [2022-11-23 15:39:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:51,957 INFO L495 AbstractCegarLoop]: Abstraction has 4819 states and 6839 transitions. [2022-11-23 15:39:51,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand 4819 states and 6839 transitions. [2022-11-23 15:39:51,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-23 15:39:51,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:51,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:39:51,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:39:51,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-23 15:39:51,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash 164460886, now seen corresponding path program 1 times [2022-11-23 15:39:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:51,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521956015] [2022-11-23 15:39:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:39:52,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:52,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521956015] [2022-11-23 15:39:52,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521956015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:52,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:39:52,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:39:52,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954842045] [2022-11-23 15:39:52,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:52,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:39:52,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:52,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:39:52,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:39:52,209 INFO L87 Difference]: Start difference. First operand 4819 states and 6839 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:54,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:54,133 INFO L93 Difference]: Finished difference Result 14305 states and 20284 transitions. [2022-11-23 15:39:54,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:39:54,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 251 [2022-11-23 15:39:54,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:54,183 INFO L225 Difference]: With dead ends: 14305 [2022-11-23 15:39:54,184 INFO L226 Difference]: Without dead ends: 9618 [2022-11-23 15:39:54,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:39:54,199 INFO L413 NwaCegarLoop]: 1740 mSDtfsCounter, 922 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:54,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2608 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:39:54,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9618 states. [2022-11-23 15:39:55,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9618 to 4822. [2022-11-23 15:39:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 4810 states have (on average 1.4224532224532225) internal successors, (6842), 4821 states have internal predecessors, (6842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:55,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 6842 transitions. [2022-11-23 15:39:55,258 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 6842 transitions. Word has length 251 [2022-11-23 15:39:55,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:55,258 INFO L495 AbstractCegarLoop]: Abstraction has 4822 states and 6842 transitions. [2022-11-23 15:39:55,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:55,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 6842 transitions. [2022-11-23 15:39:55,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-23 15:39:55,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:55,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:39:55,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:39:55,311 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-23 15:39:55,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:55,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1248830403, now seen corresponding path program 1 times [2022-11-23 15:39:55,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:55,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742081186] [2022-11-23 15:39:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:55,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:39:56,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:39:56,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:39:56,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742081186] [2022-11-23 15:39:56,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742081186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:39:56,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:39:56,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:39:56,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705737694] [2022-11-23 15:39:56,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:39:56,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:39:56,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:39:56,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:39:56,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:39:56,474 INFO L87 Difference]: Start difference. First operand 4822 states and 6842 transitions. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:39:58,131 INFO L93 Difference]: Finished difference Result 12152 states and 17178 transitions. [2022-11-23 15:39:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:39:58,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 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 252 [2022-11-23 15:39:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:39:58,192 INFO L225 Difference]: With dead ends: 12152 [2022-11-23 15:39:58,192 INFO L226 Difference]: Without dead ends: 7345 [2022-11-23 15:39:58,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:39:58,202 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 2887 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2887 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:39:58,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2887 Valid, 2321 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:39:58,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2022-11-23 15:39:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 6944. [2022-11-23 15:39:59,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6944 states, 6932 states have (on average 1.4017599538372765) internal successors, (9717), 6943 states have internal predecessors, (9717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:59,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6944 states to 6944 states and 9717 transitions. [2022-11-23 15:39:59,494 INFO L78 Accepts]: Start accepts. Automaton has 6944 states and 9717 transitions. Word has length 252 [2022-11-23 15:39:59,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:39:59,495 INFO L495 AbstractCegarLoop]: Abstraction has 6944 states and 9717 transitions. [2022-11-23 15:39:59,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:39:59,495 INFO L276 IsEmpty]: Start isEmpty. Operand 6944 states and 9717 transitions. [2022-11-23 15:39:59,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-23 15:39:59,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:39:59,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:39:59,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:39:59,517 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-23 15:39:59,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:39:59,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1871068032, now seen corresponding path program 1 times [2022-11-23 15:39:59,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:39:59,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091916308] [2022-11-23 15:39:59,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:39:59,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:39:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:02,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:02,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091916308] [2022-11-23 15:40:02,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091916308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:40:02,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:40:02,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:40:02,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787923479] [2022-11-23 15:40:02,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:40:02,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:40:02,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:02,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:40:02,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:40:02,218 INFO L87 Difference]: Start difference. First operand 6944 states and 9717 transitions. Second operand has 6 states, 6 states have (on average 42.166666666666664) internal successors, (253), 6 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:05,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:05,545 INFO L93 Difference]: Finished difference Result 17742 states and 25077 transitions. [2022-11-23 15:40:05,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:40:05,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.166666666666664) internal successors, (253), 6 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2022-11-23 15:40:05,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:05,591 INFO L225 Difference]: With dead ends: 17742 [2022-11-23 15:40:05,592 INFO L226 Difference]: Without dead ends: 13121 [2022-11-23 15:40:05,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:40:05,619 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 1616 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:05,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 3161 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 15:40:05,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13121 states. [2022-11-23 15:40:08,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13121 to 12066. [2022-11-23 15:40:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12066 states, 12054 states have (on average 1.4129749460759913) internal successors, (17032), 12065 states have internal predecessors, (17032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:08,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12066 states to 12066 states and 17032 transitions. [2022-11-23 15:40:08,075 INFO L78 Accepts]: Start accepts. Automaton has 12066 states and 17032 transitions. Word has length 253 [2022-11-23 15:40:08,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:08,076 INFO L495 AbstractCegarLoop]: Abstraction has 12066 states and 17032 transitions. [2022-11-23 15:40:08,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.166666666666664) internal successors, (253), 6 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:08,077 INFO L276 IsEmpty]: Start isEmpty. Operand 12066 states and 17032 transitions. [2022-11-23 15:40:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-23 15:40:08,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:08,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:40:08,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:40:08,098 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-23 15:40:08,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:08,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1557098385, now seen corresponding path program 1 times [2022-11-23 15:40:08,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:08,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704714016] [2022-11-23 15:40:08,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:08,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:09,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:09,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704714016] [2022-11-23 15:40:09,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704714016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:40:09,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:40:09,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:40:09,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208395876] [2022-11-23 15:40:09,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:40:09,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:40:09,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:09,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:40:09,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:40:09,091 INFO L87 Difference]: Start difference. First operand 12066 states and 17032 transitions. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:13,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:13,221 INFO L93 Difference]: Finished difference Result 35578 states and 50167 transitions. [2022-11-23 15:40:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:40:13,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2022-11-23 15:40:13,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:13,307 INFO L225 Difference]: With dead ends: 35578 [2022-11-23 15:40:13,307 INFO L226 Difference]: Without dead ends: 23650 [2022-11-23 15:40:13,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:40:13,333 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 1959 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1959 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:13,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1959 Valid, 2318 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:40:13,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23650 states. [2022-11-23 15:40:16,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23650 to 23511. [2022-11-23 15:40:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23511 states, 23499 states have (on average 1.407038597387123) internal successors, (33064), 23510 states have internal predecessors, (33064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23511 states to 23511 states and 33064 transitions. [2022-11-23 15:40:16,991 INFO L78 Accepts]: Start accepts. Automaton has 23511 states and 33064 transitions. Word has length 253 [2022-11-23 15:40:16,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:16,992 INFO L495 AbstractCegarLoop]: Abstraction has 23511 states and 33064 transitions. [2022-11-23 15:40:16,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 23511 states and 33064 transitions. [2022-11-23 15:40:17,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-23 15:40:17,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:17,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:40:17,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:40:17,031 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-23 15:40:17,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1175008678, now seen corresponding path program 1 times [2022-11-23 15:40:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:17,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437304654] [2022-11-23 15:40:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:17,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:17,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437304654] [2022-11-23 15:40:17,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437304654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:40:17,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:40:17,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:40:17,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433761289] [2022-11-23 15:40:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:40:17,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:40:17,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:17,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:40:17,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:40:17,921 INFO L87 Difference]: Start difference. First operand 23511 states and 33064 transitions. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:24,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:24,027 INFO L93 Difference]: Finished difference Result 60615 states and 85228 transitions. [2022-11-23 15:40:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:40:24,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 255 [2022-11-23 15:40:24,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:24,140 INFO L225 Difference]: With dead ends: 60615 [2022-11-23 15:40:24,141 INFO L226 Difference]: Without dead ends: 37246 [2022-11-23 15:40:24,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:40:24,182 INFO L413 NwaCegarLoop]: 1469 mSDtfsCounter, 1940 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:24,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 2295 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:40:24,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37246 states. [2022-11-23 15:40:30,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37246 to 35877. [2022-11-23 15:40:30,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35877 states, 35865 states have (on average 1.394925414749756) internal successors, (50029), 35876 states have internal predecessors, (50029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35877 states to 35877 states and 50029 transitions. [2022-11-23 15:40:30,325 INFO L78 Accepts]: Start accepts. Automaton has 35877 states and 50029 transitions. Word has length 255 [2022-11-23 15:40:30,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:40:30,326 INFO L495 AbstractCegarLoop]: Abstraction has 35877 states and 50029 transitions. [2022-11-23 15:40:30,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 35877 states and 50029 transitions. [2022-11-23 15:40:30,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-23 15:40:30,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:30,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:40:30,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:40:30,379 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-11-23 15:40:30,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:30,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1182008867, now seen corresponding path program 1 times [2022-11-23 15:40:30,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:30,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284480092] [2022-11-23 15:40:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:30,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:40:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:40:30,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:40:30,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284480092] [2022-11-23 15:40:30,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284480092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:40:30,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:40:30,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:40:30,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226529279] [2022-11-23 15:40:30,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:40:30,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:40:30,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:40:30,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:40:30,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:40:30,583 INFO L87 Difference]: Start difference. First operand 35877 states and 50029 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:40:39,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:40:39,633 INFO L93 Difference]: Finished difference Result 97296 states and 135601 transitions. [2022-11-23 15:40:39,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:40:39,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 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 257 [2022-11-23 15:40:39,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:40:39,818 INFO L225 Difference]: With dead ends: 97296 [2022-11-23 15:40:39,818 INFO L226 Difference]: Without dead ends: 62981 [2022-11-23 15:40:40,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:40:40,104 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 806 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:40:40,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 2503 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:40:40,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62981 states.