./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba --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 5de8a6e48c671522e021c00f8053da339f3153b1fcc0b54263671efa3814086b --- 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-b5237d8 [2022-11-22 01:58:39,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:58:39,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:58:39,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:58:39,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:58:39,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:58:39,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:58:39,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:58:39,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:58:39,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:58:39,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:58:39,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:58:39,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:58:39,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:58:39,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:58:39,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:58:39,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:58:39,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:58:39,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:58:39,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:58:39,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:58:39,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:58:39,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:58:39,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:58:39,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:58:39,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:58:39,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:58:39,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:58:39,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:58:39,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:58:39,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:58:39,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:58:39,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:58:39,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:58:39,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:58:39,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:58:39,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:58:39,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:58:39,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:58:39,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:58:39,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:58:39,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:58:39,317 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:58:39,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:58:39,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:58:39,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:58:39,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:58:39,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:58:39,320 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:58:39,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:58:39,320 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:58:39,320 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:58:39,321 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:58:39,322 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:58:39,322 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:58:39,322 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:58:39,322 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:58:39,322 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:58:39,323 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:58:39,323 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:58:39,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:58:39,324 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:58:39,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:58:39,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:58:39,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:58:39,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:58:39,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:58:39,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:58:39,325 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:58:39,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:58:39,326 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:58:39,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:58:39,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:58:39,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:58:39,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:58:39,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:58:39,327 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:58:39,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:58:39,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:58:39,327 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:58:39,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:58:39,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:58:39,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:58:39,328 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_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5de8a6e48c671522e021c00f8053da339f3153b1fcc0b54263671efa3814086b [2022-11-22 01:58:39,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:58:39,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:58:39,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:58:39,643 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:58:39,644 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:58:39,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-11-22 01:58:42,661 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:58:43,162 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:58:43,163 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-11-22 01:58:43,196 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/data/4de21fba7/30220c0d748b466bb151e2288874f003/FLAG36d659c75 [2022-11-22 01:58:43,214 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/data/4de21fba7/30220c0d748b466bb151e2288874f003 [2022-11-22 01:58:43,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:58:43,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:58:43,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:58:43,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:58:43,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:58:43,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:58:43" (1/1) ... [2022-11-22 01:58:43,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6ba037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:43, skipping insertion in model container [2022-11-22 01:58:43,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:58:43" (1/1) ... [2022-11-22 01:58:43,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:58:43,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:58:43,668 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8424,8437] [2022-11-22 01:58:43,711 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_4b903017-8c32-4140-ad3c-41494f26b429/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12951,12964] [2022-11-22 01:58:43,778 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_4b903017-8c32-4140-ad3c-41494f26b429/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20701,20714] [2022-11-22 01:58:43,845 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27792,27805] [2022-11-22 01:58:43,950 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_4b903017-8c32-4140-ad3c-41494f26b429/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49016,49029] [2022-11-22 01:58:44,097 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_4b903017-8c32-4140-ad3c-41494f26b429/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80107,80120] [2022-11-22 01:58:44,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:58:44,343 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:58:44,396 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_4b903017-8c32-4140-ad3c-41494f26b429/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8424,8437] [2022-11-22 01:58:44,418 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_4b903017-8c32-4140-ad3c-41494f26b429/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12951,12964] [2022-11-22 01:58:44,446 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_4b903017-8c32-4140-ad3c-41494f26b429/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20701,20714] [2022-11-22 01:58:44,473 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_4b903017-8c32-4140-ad3c-41494f26b429/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27792,27805] [2022-11-22 01:58:44,543 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_4b903017-8c32-4140-ad3c-41494f26b429/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49016,49029] [2022-11-22 01:58:44,616 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_4b903017-8c32-4140-ad3c-41494f26b429/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80107,80120] [2022-11-22 01:58:44,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:58:44,771 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:58:44,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:44 WrapperNode [2022-11-22 01:58:44,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:58:44,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:58:44,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:58:44,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:58:44,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:44" (1/1) ... [2022-11-22 01:58:44,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:44" (1/1) ... [2022-11-22 01:58:44,966 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5949 [2022-11-22 01:58:44,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:58:44,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:58:44,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:58:44,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:58:44,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:44" (1/1) ... [2022-11-22 01:58:44,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:44" (1/1) ... [2022-11-22 01:58:44,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:44" (1/1) ... [2022-11-22 01:58:44,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:44" (1/1) ... [2022-11-22 01:58:45,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:44" (1/1) ... [2022-11-22 01:58:45,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:44" (1/1) ... [2022-11-22 01:58:45,072 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:44" (1/1) ... [2022-11-22 01:58:45,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:44" (1/1) ... [2022-11-22 01:58:45,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:58:45,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:58:45,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:58:45,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:58:45,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:44" (1/1) ... [2022-11-22 01:58:45,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:58:45,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:58:45,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:58:45,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:58:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:58:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:58:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:58:45,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:58:45,606 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:58:45,608 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:58:48,777 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:58:49,225 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:58:49,225 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:58:49,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:58:49 BoogieIcfgContainer [2022-11-22 01:58:49,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:58:49,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:58:49,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:58:49,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:58:49,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:58:43" (1/3) ... [2022-11-22 01:58:49,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afe2507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:58:49, skipping insertion in model container [2022-11-22 01:58:49,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:44" (2/3) ... [2022-11-22 01:58:49,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afe2507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:58:49, skipping insertion in model container [2022-11-22 01:58:49,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:58:49" (3/3) ... [2022-11-22 01:58:49,239 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-11-22 01:58:49,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:58:49,259 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-22 01:58:49,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:58:49,361 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;@7d98a939, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:58:49,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-22 01:58:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 1234 states, 1227 states have (on average 1.771801140994295) internal successors, (2174), 1233 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:58:49,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-22 01:58:49,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:58:49,398 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] [2022-11-22 01:58:49,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:58:49,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:58:49,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2092473724, now seen corresponding path program 1 times [2022-11-22 01:58:49,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:58:49,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342983544] [2022-11-22 01:58:49,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:58:49,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:58:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:58:50,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:58:50,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:58:50,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342983544] [2022-11-22 01:58:50,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342983544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:58:50,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:58:50,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:58:50,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909200718] [2022-11-22 01:58:50,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:58:50,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:58:50,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:58:50,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:58:50,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:58:50,093 INFO L87 Difference]: Start difference. First operand has 1234 states, 1227 states have (on average 1.771801140994295) internal successors, (2174), 1233 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:58:51,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:58:51,969 INFO L93 Difference]: Finished difference Result 2365 states and 4064 transitions. [2022-11-22 01:58:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:58:51,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-11-22 01:58:51,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:58:51,992 INFO L225 Difference]: With dead ends: 2365 [2022-11-22 01:58:51,992 INFO L226 Difference]: Without dead ends: 1494 [2022-11-22 01:58:51,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:58:52,001 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 6657 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6657 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:58:52,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6657 Valid, 1450 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 01:58:52,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-11-22 01:58:52,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1488. [2022-11-22 01:58:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1482 states have (on average 1.2793522267206479) internal successors, (1896), 1487 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:58:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1896 transitions. [2022-11-22 01:58:52,214 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1896 transitions. Word has length 51 [2022-11-22 01:58:52,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:58:52,215 INFO L495 AbstractCegarLoop]: Abstraction has 1488 states and 1896 transitions. [2022-11-22 01:58:52,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:58:52,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1896 transitions. [2022-11-22 01:58:52,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-22 01:58:52,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:58:52,218 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] [2022-11-22 01:58:52,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:58:52,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:58:52,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:58:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1158227955, now seen corresponding path program 1 times [2022-11-22 01:58:52,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:58:52,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040926025] [2022-11-22 01:58:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:58:52,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:58:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:58:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:58:52,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:58:52,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040926025] [2022-11-22 01:58:52,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040926025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:58:52,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:58:52,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:58:52,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496201154] [2022-11-22 01:58:52,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:58:52,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:58:52,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:58:52,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:58:52,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:58:52,369 INFO L87 Difference]: Start difference. First operand 1488 states and 1896 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:58:53,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:58:53,602 INFO L93 Difference]: Finished difference Result 2955 states and 3772 transitions. [2022-11-22 01:58:53,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:58:53,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-11-22 01:58:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:58:53,610 INFO L225 Difference]: With dead ends: 2955 [2022-11-22 01:58:53,610 INFO L226 Difference]: Without dead ends: 2037 [2022-11-22 01:58:53,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:58:53,614 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 4522 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4522 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:58:53,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4522 Valid, 911 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:58:53,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2022-11-22 01:58:53,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2023. [2022-11-22 01:58:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 2017 states have (on average 1.281110560237977) internal successors, (2584), 2022 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:58:53,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2584 transitions. [2022-11-22 01:58:53,717 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2584 transitions. Word has length 52 [2022-11-22 01:58:53,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:58:53,717 INFO L495 AbstractCegarLoop]: Abstraction has 2023 states and 2584 transitions. [2022-11-22 01:58:53,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:58:53,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2584 transitions. [2022-11-22 01:58:53,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-22 01:58:53,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:58:53,721 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] [2022-11-22 01:58:53,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:58:53,722 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:58:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:58:53,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1808254749, now seen corresponding path program 1 times [2022-11-22 01:58:53,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:58:53,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588584960] [2022-11-22 01:58:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:58:53,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:58:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:58:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:58:53,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:58:53,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588584960] [2022-11-22 01:58:53,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588584960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:58:53,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:58:53,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:58:53,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849059770] [2022-11-22 01:58:53,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:58:53,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:58:53,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:58:53,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:58:53,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:58:53,848 INFO L87 Difference]: Start difference. First operand 2023 states and 2584 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:58:55,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:58:55,002 INFO L93 Difference]: Finished difference Result 4066 states and 5224 transitions. [2022-11-22 01:58:55,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:58:55,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-11-22 01:58:55,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:58:55,012 INFO L225 Difference]: With dead ends: 4066 [2022-11-22 01:58:55,012 INFO L226 Difference]: Without dead ends: 2767 [2022-11-22 01:58:55,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:58:55,018 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 4000 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4000 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:58:55,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4000 Valid, 814 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 01:58:55,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2022-11-22 01:58:55,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2757. [2022-11-22 01:58:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2751 states have (on average 1.2751726644856416) internal successors, (3508), 2756 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:58:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3508 transitions. [2022-11-22 01:58:55,261 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3508 transitions. Word has length 52 [2022-11-22 01:58:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:58:55,262 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 3508 transitions. [2022-11-22 01:58:55,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:58:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3508 transitions. [2022-11-22 01:58:55,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 01:58:55,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:58:55,267 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] [2022-11-22 01:58:55,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:58:55,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:58:55,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:58:55,269 INFO L85 PathProgramCache]: Analyzing trace with hash 77244356, now seen corresponding path program 1 times [2022-11-22 01:58:55,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:58:55,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707456708] [2022-11-22 01:58:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:58:55,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:58:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:58:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:58:55,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:58:55,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707456708] [2022-11-22 01:58:55,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707456708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:58:55,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:58:55,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 01:58:55,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293183594] [2022-11-22 01:58:55,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:58:55,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:58:55,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:58:55,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:58:55,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:58:55,756 INFO L87 Difference]: Start difference. First operand 2757 states and 3508 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:58:57,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:58:57,804 INFO L93 Difference]: Finished difference Result 4380 states and 5696 transitions. [2022-11-22 01:58:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:58:57,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-11-22 01:58:57,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:58:57,821 INFO L225 Difference]: With dead ends: 4380 [2022-11-22 01:58:57,821 INFO L226 Difference]: Without dead ends: 3852 [2022-11-22 01:58:57,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-22 01:58:57,834 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 2512 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:58:57,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2512 Valid, 2542 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 01:58:57,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2022-11-22 01:58:58,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 2757. [2022-11-22 01:58:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2751 states have (on average 1.2748091603053435) internal successors, (3507), 2756 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:58:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3507 transitions. [2022-11-22 01:58:58,106 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3507 transitions. Word has length 54 [2022-11-22 01:58:58,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:58:58,106 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 3507 transitions. [2022-11-22 01:58:58,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:58:58,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3507 transitions. [2022-11-22 01:58:58,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 01:58:58,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:58:58,111 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] [2022-11-22 01:58:58,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:58:58,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:58:58,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:58:58,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1063699171, now seen corresponding path program 1 times [2022-11-22 01:58:58,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:58:58,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956553487] [2022-11-22 01:58:58,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:58:58,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:58:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:58:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:58:58,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:58:58,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956553487] [2022-11-22 01:58:58,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956553487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:58:58,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:58:58,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:58:58,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646978620] [2022-11-22 01:58:58,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:58:58,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:58:58,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:58:58,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:58:58,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:58:58,522 INFO L87 Difference]: Start difference. First operand 2757 states and 3507 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:01,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:01,710 INFO L93 Difference]: Finished difference Result 5136 states and 6662 transitions. [2022-11-22 01:59:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 01:59:01,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-11-22 01:59:01,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:01,728 INFO L225 Difference]: With dead ends: 5136 [2022-11-22 01:59:01,728 INFO L226 Difference]: Without dead ends: 4730 [2022-11-22 01:59:01,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 01:59:01,733 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 3713 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3713 SdHoareTripleChecker+Valid, 3688 SdHoareTripleChecker+Invalid, 3772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:01,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3713 Valid, 3688 Invalid, 3772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 01:59:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2022-11-22 01:59:02,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 2757. [2022-11-22 01:59:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2751 states have (on average 1.2744456561250455) internal successors, (3506), 2756 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:02,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3506 transitions. [2022-11-22 01:59:02,037 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3506 transitions. Word has length 54 [2022-11-22 01:59:02,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:02,039 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 3506 transitions. [2022-11-22 01:59:02,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:02,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3506 transitions. [2022-11-22 01:59:02,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 01:59:02,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:02,043 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] [2022-11-22 01:59:02,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:59:02,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:02,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:02,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1340474756, now seen corresponding path program 1 times [2022-11-22 01:59:02,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:02,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129207954] [2022-11-22 01:59:02,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:02,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:02,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:02,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:02,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129207954] [2022-11-22 01:59:02,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129207954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:02,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:02,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:59:02,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889569417] [2022-11-22 01:59:02,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:02,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:59:02,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:02,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:59:02,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:59:02,418 INFO L87 Difference]: Start difference. First operand 2757 states and 3506 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:04,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:04,775 INFO L93 Difference]: Finished difference Result 3968 states and 5094 transitions. [2022-11-22 01:59:04,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 01:59:04,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-11-22 01:59:04,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:04,793 INFO L225 Difference]: With dead ends: 3968 [2022-11-22 01:59:04,793 INFO L226 Difference]: Without dead ends: 3962 [2022-11-22 01:59:04,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-22 01:59:04,796 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 2386 mSDsluCounter, 2276 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:04,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2386 Valid, 2914 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 01:59:04,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2022-11-22 01:59:05,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 2757. [2022-11-22 01:59:05,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2751 states have (on average 1.2740821519447474) internal successors, (3505), 2756 states have internal predecessors, (3505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3505 transitions. [2022-11-22 01:59:05,119 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3505 transitions. Word has length 54 [2022-11-22 01:59:05,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:05,119 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 3505 transitions. [2022-11-22 01:59:05,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:05,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3505 transitions. [2022-11-22 01:59:05,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-22 01:59:05,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:05,122 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] [2022-11-22 01:59:05,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:59:05,123 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:05,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:05,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1906140159, now seen corresponding path program 1 times [2022-11-22 01:59:05,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:05,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100460998] [2022-11-22 01:59:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:05,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:05,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:05,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100460998] [2022-11-22 01:59:05,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100460998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:05,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:05,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:05,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043388043] [2022-11-22 01:59:05,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:05,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:05,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:05,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:05,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:05,197 INFO L87 Difference]: Start difference. First operand 2757 states and 3505 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:05,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:05,676 INFO L93 Difference]: Finished difference Result 3421 states and 4438 transitions. [2022-11-22 01:59:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:05,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-11-22 01:59:05,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:05,687 INFO L225 Difference]: With dead ends: 3421 [2022-11-22 01:59:05,687 INFO L226 Difference]: Without dead ends: 2678 [2022-11-22 01:59:05,690 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 [2022-11-22 01:59:05,691 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 498 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:05,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1613 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:05,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2022-11-22 01:59:06,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2676. [2022-11-22 01:59:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2670 states have (on average 1.2775280898876404) internal successors, (3411), 2675 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 3411 transitions. [2022-11-22 01:59:06,167 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 3411 transitions. Word has length 55 [2022-11-22 01:59:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:06,168 INFO L495 AbstractCegarLoop]: Abstraction has 2676 states and 3411 transitions. [2022-11-22 01:59:06,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:06,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 3411 transitions. [2022-11-22 01:59:06,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-22 01:59:06,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:06,171 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] [2022-11-22 01:59:06,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:59:06,172 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:06,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:06,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1049277419, now seen corresponding path program 1 times [2022-11-22 01:59:06,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:06,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775202410] [2022-11-22 01:59:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:06,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:06,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:06,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775202410] [2022-11-22 01:59:06,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775202410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:06,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:06,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:06,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023851286] [2022-11-22 01:59:06,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:06,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:06,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:06,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:06,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:06,255 INFO L87 Difference]: Start difference. First operand 2676 states and 3411 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:06,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:06,812 INFO L93 Difference]: Finished difference Result 3806 states and 5002 transitions. [2022-11-22 01:59:06,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:06,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-11-22 01:59:06,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:06,822 INFO L225 Difference]: With dead ends: 3806 [2022-11-22 01:59:06,823 INFO L226 Difference]: Without dead ends: 2874 [2022-11-22 01:59:06,825 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 [2022-11-22 01:59:06,825 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 511 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:06,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1555 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2022-11-22 01:59:07,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2872. [2022-11-22 01:59:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2866 states have (on average 1.2951849267271458) internal successors, (3712), 2871 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 3712 transitions. [2022-11-22 01:59:07,290 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 3712 transitions. Word has length 55 [2022-11-22 01:59:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:07,290 INFO L495 AbstractCegarLoop]: Abstraction has 2872 states and 3712 transitions. [2022-11-22 01:59:07,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:07,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 3712 transitions. [2022-11-22 01:59:07,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-22 01:59:07,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:07,293 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] [2022-11-22 01:59:07,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:59:07,294 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:07,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:07,295 INFO L85 PathProgramCache]: Analyzing trace with hash 772696843, now seen corresponding path program 1 times [2022-11-22 01:59:07,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:07,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387321121] [2022-11-22 01:59:07,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:07,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:07,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:07,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387321121] [2022-11-22 01:59:07,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387321121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:07,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:07,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:07,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612180819] [2022-11-22 01:59:07,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:07,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:07,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:07,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:07,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:07,374 INFO L87 Difference]: Start difference. First operand 2872 states and 3712 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:08,259 INFO L93 Difference]: Finished difference Result 5772 states and 7594 transitions. [2022-11-22 01:59:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:08,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-11-22 01:59:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:08,286 INFO L225 Difference]: With dead ends: 5772 [2022-11-22 01:59:08,292 INFO L226 Difference]: Without dead ends: 3961 [2022-11-22 01:59:08,295 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 [2022-11-22 01:59:08,296 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 577 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:08,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1771 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:08,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3961 states. [2022-11-22 01:59:09,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3961 to 3955. [2022-11-22 01:59:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3955 states, 3949 states have (on average 1.2864016206634592) internal successors, (5080), 3954 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3955 states to 3955 states and 5080 transitions. [2022-11-22 01:59:09,103 INFO L78 Accepts]: Start accepts. Automaton has 3955 states and 5080 transitions. Word has length 55 [2022-11-22 01:59:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:09,103 INFO L495 AbstractCegarLoop]: Abstraction has 3955 states and 5080 transitions. [2022-11-22 01:59:09,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:09,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3955 states and 5080 transitions. [2022-11-22 01:59:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-22 01:59:09,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:09,108 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] [2022-11-22 01:59:09,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:59:09,109 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:09,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:09,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2137132613, now seen corresponding path program 1 times [2022-11-22 01:59:09,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:09,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164853058] [2022-11-22 01:59:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:09,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:09,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:09,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164853058] [2022-11-22 01:59:09,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164853058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:09,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:09,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 01:59:09,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553261352] [2022-11-22 01:59:09,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:09,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 01:59:09,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:09,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 01:59:09,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:59:09,857 INFO L87 Difference]: Start difference. First operand 3955 states and 5080 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:13,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:13,282 INFO L93 Difference]: Finished difference Result 8162 states and 10648 transitions. [2022-11-22 01:59:13,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 01:59:13,283 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-22 01:59:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:13,301 INFO L225 Difference]: With dead ends: 8162 [2022-11-22 01:59:13,302 INFO L226 Difference]: Without dead ends: 7915 [2022-11-22 01:59:13,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-11-22 01:59:13,306 INFO L413 NwaCegarLoop]: 1146 mSDtfsCounter, 3468 mSDsluCounter, 4600 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3468 SdHoareTripleChecker+Valid, 5746 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:13,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3468 Valid, 5746 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 01:59:13,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7915 states. [2022-11-22 01:59:13,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7915 to 3942. [2022-11-22 01:59:13,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3937 states have (on average 1.286512573025146) internal successors, (5065), 3941 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5065 transitions. [2022-11-22 01:59:13,951 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5065 transitions. Word has length 56 [2022-11-22 01:59:13,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:13,951 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 5065 transitions. [2022-11-22 01:59:13,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5065 transitions. [2022-11-22 01:59:13,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-22 01:59:13,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:13,954 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] [2022-11-22 01:59:13,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:59:13,955 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:13,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:13,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1716509337, now seen corresponding path program 1 times [2022-11-22 01:59:13,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:13,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525832041] [2022-11-22 01:59:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:13,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:14,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:14,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525832041] [2022-11-22 01:59:14,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525832041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:14,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:14,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:14,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605637095] [2022-11-22 01:59:14,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:14,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:14,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:14,026 INFO L87 Difference]: Start difference. First operand 3942 states and 5065 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:14,889 INFO L93 Difference]: Finished difference Result 7053 states and 9163 transitions. [2022-11-22 01:59:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:14,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-22 01:59:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:14,896 INFO L225 Difference]: With dead ends: 7053 [2022-11-22 01:59:14,897 INFO L226 Difference]: Without dead ends: 4058 [2022-11-22 01:59:14,901 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 [2022-11-22 01:59:14,901 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 744 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:14,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1100 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:14,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2022-11-22 01:59:15,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 3260. [2022-11-22 01:59:15,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3256 states have (on average 1.2939189189189189) internal successors, (4213), 3259 states have internal predecessors, (4213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4213 transitions. [2022-11-22 01:59:15,857 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4213 transitions. Word has length 56 [2022-11-22 01:59:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:15,857 INFO L495 AbstractCegarLoop]: Abstraction has 3260 states and 4213 transitions. [2022-11-22 01:59:15,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4213 transitions. [2022-11-22 01:59:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-22 01:59:15,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:15,867 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] [2022-11-22 01:59:15,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:59:15,867 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:15,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:15,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1650159387, now seen corresponding path program 1 times [2022-11-22 01:59:15,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:15,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352428104] [2022-11-22 01:59:15,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:15,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:15,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:15,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352428104] [2022-11-22 01:59:15,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352428104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:15,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:15,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:15,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207053981] [2022-11-22 01:59:15,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:15,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:15,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:15,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:15,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:15,942 INFO L87 Difference]: Start difference. First operand 3260 states and 4213 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:16,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:16,930 INFO L93 Difference]: Finished difference Result 5975 states and 7833 transitions. [2022-11-22 01:59:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:16,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-22 01:59:16,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:16,936 INFO L225 Difference]: With dead ends: 5975 [2022-11-22 01:59:16,936 INFO L226 Difference]: Without dead ends: 3415 [2022-11-22 01:59:16,939 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 [2022-11-22 01:59:16,940 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 571 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:16,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 882 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2022-11-22 01:59:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 2759. [2022-11-22 01:59:17,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2756 states have (on average 1.2982583454281567) internal successors, (3578), 2758 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3578 transitions. [2022-11-22 01:59:17,522 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3578 transitions. Word has length 56 [2022-11-22 01:59:17,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:17,522 INFO L495 AbstractCegarLoop]: Abstraction has 2759 states and 3578 transitions. [2022-11-22 01:59:17,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3578 transitions. [2022-11-22 01:59:17,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-22 01:59:17,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:17,525 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] [2022-11-22 01:59:17,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:59:17,525 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:17,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash 235795551, now seen corresponding path program 1 times [2022-11-22 01:59:17,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:17,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836098490] [2022-11-22 01:59:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:17,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:17,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:17,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:17,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836098490] [2022-11-22 01:59:17,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836098490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:17,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:17,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:17,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037933615] [2022-11-22 01:59:17,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:17,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:17,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:17,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:17,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:17,616 INFO L87 Difference]: Start difference. First operand 2759 states and 3578 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:18,356 INFO L93 Difference]: Finished difference Result 5083 states and 6666 transitions. [2022-11-22 01:59:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:18,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-22 01:59:18,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:18,362 INFO L225 Difference]: With dead ends: 5083 [2022-11-22 01:59:18,362 INFO L226 Difference]: Without dead ends: 2657 [2022-11-22 01:59:18,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:18,367 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 484 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:18,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 775 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:18,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2022-11-22 01:59:18,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2326. [2022-11-22 01:59:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2326 states, 2323 states have (on average 1.303486870426173) internal successors, (3028), 2325 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 3028 transitions. [2022-11-22 01:59:18,909 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 3028 transitions. Word has length 56 [2022-11-22 01:59:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:18,909 INFO L495 AbstractCegarLoop]: Abstraction has 2326 states and 3028 transitions. [2022-11-22 01:59:18,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 3028 transitions. [2022-11-22 01:59:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-22 01:59:18,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:18,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:18,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:59:18,911 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:18,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:18,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1739046160, now seen corresponding path program 1 times [2022-11-22 01:59:18,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:18,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093741863] [2022-11-22 01:59:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:19,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:19,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093741863] [2022-11-22 01:59:19,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093741863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:19,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:19,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 01:59:19,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412513162] [2022-11-22 01:59:19,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:19,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:59:19,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:19,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:59:19,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-22 01:59:19,553 INFO L87 Difference]: Start difference. First operand 2326 states and 3028 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:23,124 INFO L93 Difference]: Finished difference Result 5856 states and 7602 transitions. [2022-11-22 01:59:23,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 01:59:23,124 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-22 01:59:23,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:23,135 INFO L225 Difference]: With dead ends: 5856 [2022-11-22 01:59:23,136 INFO L226 Difference]: Without dead ends: 5597 [2022-11-22 01:59:23,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2022-11-22 01:59:23,139 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 2798 mSDsluCounter, 3238 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2798 SdHoareTripleChecker+Valid, 4106 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:23,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2798 Valid, 4106 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:59:23,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2022-11-22 01:59:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 2301. [2022-11-22 01:59:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2299 states have (on average 1.3040452370595912) internal successors, (2998), 2300 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:23,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 2998 transitions. [2022-11-22 01:59:23,913 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 2998 transitions. Word has length 57 [2022-11-22 01:59:23,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:23,913 INFO L495 AbstractCegarLoop]: Abstraction has 2301 states and 2998 transitions. [2022-11-22 01:59:23,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 2998 transitions. [2022-11-22 01:59:23,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-22 01:59:23,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:23,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:23,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:59:23,915 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:23,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:23,916 INFO L85 PathProgramCache]: Analyzing trace with hash 503772602, now seen corresponding path program 1 times [2022-11-22 01:59:23,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:23,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431438313] [2022-11-22 01:59:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:23,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:24,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:24,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:24,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431438313] [2022-11-22 01:59:24,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431438313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:24,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:24,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-22 01:59:24,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124028162] [2022-11-22 01:59:24,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:24,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-22 01:59:24,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:24,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-22 01:59:24,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-22 01:59:24,931 INFO L87 Difference]: Start difference. First operand 2301 states and 2998 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:29,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:29,473 INFO L93 Difference]: Finished difference Result 4514 states and 5843 transitions. [2022-11-22 01:59:29,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-22 01:59:29,474 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-22 01:59:29,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:29,480 INFO L225 Difference]: With dead ends: 4514 [2022-11-22 01:59:29,480 INFO L226 Difference]: Without dead ends: 4510 [2022-11-22 01:59:29,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 01:59:29,482 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 4034 mSDsluCounter, 6671 mSDsCounter, 0 mSdLazyCounter, 2483 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4034 SdHoareTripleChecker+Valid, 7318 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:29,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4034 Valid, 7318 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2483 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-22 01:59:29,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2022-11-22 01:59:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 2309. [2022-11-22 01:59:30,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2307 states have (on average 1.3038578240138707) internal successors, (3008), 2308 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3008 transitions. [2022-11-22 01:59:30,176 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3008 transitions. Word has length 57 [2022-11-22 01:59:30,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:30,176 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 3008 transitions. [2022-11-22 01:59:30,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3008 transitions. [2022-11-22 01:59:30,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-22 01:59:30,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:30,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:30,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 01:59:30,178 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:30,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:30,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2083415141, now seen corresponding path program 1 times [2022-11-22 01:59:30,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:30,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808012344] [2022-11-22 01:59:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:30,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:31,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:31,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808012344] [2022-11-22 01:59:31,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808012344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:31,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:31,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-22 01:59:31,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39276538] [2022-11-22 01:59:31,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:31,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 01:59:31,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:31,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 01:59:31,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-11-22 01:59:31,154 INFO L87 Difference]: Start difference. First operand 2309 states and 3008 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:36,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:36,578 INFO L93 Difference]: Finished difference Result 4437 states and 5693 transitions. [2022-11-22 01:59:36,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-22 01:59:36,579 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-22 01:59:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:36,583 INFO L225 Difference]: With dead ends: 4437 [2022-11-22 01:59:36,583 INFO L226 Difference]: Without dead ends: 4433 [2022-11-22 01:59:36,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 01:59:36,585 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 4122 mSDsluCounter, 6490 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4122 SdHoareTripleChecker+Valid, 7200 SdHoareTripleChecker+Invalid, 2593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:36,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4122 Valid, 7200 Invalid, 2593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-22 01:59:36,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2022-11-22 01:59:37,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 2297. [2022-11-22 01:59:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2297 states, 2296 states have (on average 1.3040069686411149) internal successors, (2994), 2296 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:37,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 2994 transitions. [2022-11-22 01:59:37,292 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 2994 transitions. Word has length 58 [2022-11-22 01:59:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:37,293 INFO L495 AbstractCegarLoop]: Abstraction has 2297 states and 2994 transitions. [2022-11-22 01:59:37,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 2994 transitions. [2022-11-22 01:59:37,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 01:59:37,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:37,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:37,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 01:59:37,295 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:37,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:37,297 INFO L85 PathProgramCache]: Analyzing trace with hash -623939390, now seen corresponding path program 1 times [2022-11-22 01:59:37,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:37,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063609500] [2022-11-22 01:59:37,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:37,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:37,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:37,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063609500] [2022-11-22 01:59:37,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063609500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:37,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:37,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:59:37,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195261724] [2022-11-22 01:59:37,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:37,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:59:37,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:37,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:59:37,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:37,407 INFO L87 Difference]: Start difference. First operand 2297 states and 2994 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:38,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:38,343 INFO L93 Difference]: Finished difference Result 3855 states and 5097 transitions. [2022-11-22 01:59:38,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:59:38,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-22 01:59:38,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:38,346 INFO L225 Difference]: With dead ends: 3855 [2022-11-22 01:59:38,346 INFO L226 Difference]: Without dead ends: 2067 [2022-11-22 01:59:38,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:38,348 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 947 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:38,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 763 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:38,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2022-11-22 01:59:39,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 2063. [2022-11-22 01:59:39,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2063 states, 2062 states have (on average 1.2934044616876819) internal successors, (2667), 2062 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 2667 transitions. [2022-11-22 01:59:39,137 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 2667 transitions. Word has length 61 [2022-11-22 01:59:39,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:39,138 INFO L495 AbstractCegarLoop]: Abstraction has 2063 states and 2667 transitions. [2022-11-22 01:59:39,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:39,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 2667 transitions. [2022-11-22 01:59:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-22 01:59:39,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:39,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:39,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 01:59:39,140 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:39,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash 397628825, now seen corresponding path program 1 times [2022-11-22 01:59:39,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:39,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914384068] [2022-11-22 01:59:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:39,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:39,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:39,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914384068] [2022-11-22 01:59:39,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914384068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:39,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:39,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:39,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352078958] [2022-11-22 01:59:39,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:39,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:39,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:39,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:39,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:39,275 INFO L87 Difference]: Start difference. First operand 2063 states and 2667 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:40,521 INFO L93 Difference]: Finished difference Result 4383 states and 5811 transitions. [2022-11-22 01:59:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:40,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-22 01:59:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:40,525 INFO L225 Difference]: With dead ends: 4383 [2022-11-22 01:59:40,525 INFO L226 Difference]: Without dead ends: 2935 [2022-11-22 01:59:40,528 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 [2022-11-22 01:59:40,529 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 284 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:40,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 713 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:40,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2022-11-22 01:59:41,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2699. [2022-11-22 01:59:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2698 states have (on average 1.2946627131208301) internal successors, (3493), 2698 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:41,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3493 transitions. [2022-11-22 01:59:41,433 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3493 transitions. Word has length 62 [2022-11-22 01:59:41,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:41,434 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3493 transitions. [2022-11-22 01:59:41,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:41,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3493 transitions. [2022-11-22 01:59:41,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 01:59:41,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:41,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:41,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 01:59:41,436 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:41,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:41,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1236897276, now seen corresponding path program 1 times [2022-11-22 01:59:41,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:41,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148015639] [2022-11-22 01:59:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:41,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:41,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:41,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148015639] [2022-11-22 01:59:41,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148015639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:41,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:41,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:41,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080330637] [2022-11-22 01:59:41,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:41,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:41,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:41,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:41,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:41,554 INFO L87 Difference]: Start difference. First operand 2699 states and 3493 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:43,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:43,234 INFO L93 Difference]: Finished difference Result 6034 states and 7970 transitions. [2022-11-22 01:59:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:43,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-22 01:59:43,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:43,239 INFO L225 Difference]: With dead ends: 6034 [2022-11-22 01:59:43,240 INFO L226 Difference]: Without dead ends: 4012 [2022-11-22 01:59:43,242 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 [2022-11-22 01:59:43,243 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 227 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:43,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 744 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:43,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4012 states. [2022-11-22 01:59:44,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4012 to 3658. [2022-11-22 01:59:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 1.2904019688269073) internal successors, (4719), 3657 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 4719 transitions. [2022-11-22 01:59:44,471 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 4719 transitions. Word has length 63 [2022-11-22 01:59:44,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:44,472 INFO L495 AbstractCegarLoop]: Abstraction has 3658 states and 4719 transitions. [2022-11-22 01:59:44,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 4719 transitions. [2022-11-22 01:59:44,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-22 01:59:44,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:44,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:44,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 01:59:44,474 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:44,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:44,474 INFO L85 PathProgramCache]: Analyzing trace with hash -660543680, now seen corresponding path program 1 times [2022-11-22 01:59:44,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:44,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004379474] [2022-11-22 01:59:44,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:44,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:44,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:44,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004379474] [2022-11-22 01:59:44,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004379474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:44,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:44,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 01:59:44,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217598484] [2022-11-22 01:59:44,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:44,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:59:44,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:44,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:59:44,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:59:44,862 INFO L87 Difference]: Start difference. First operand 3658 states and 4719 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:48,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:48,807 INFO L93 Difference]: Finished difference Result 8263 states and 10665 transitions. [2022-11-22 01:59:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-22 01:59:48,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-22 01:59:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:48,816 INFO L225 Difference]: With dead ends: 8263 [2022-11-22 01:59:48,816 INFO L226 Difference]: Without dead ends: 8261 [2022-11-22 01:59:48,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-11-22 01:59:48,818 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 2012 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:48,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2012 Valid, 2475 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:59:48,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8261 states. [2022-11-22 01:59:50,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8261 to 4246. [2022-11-22 01:59:50,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4246 states, 4245 states have (on average 1.2852767962308598) internal successors, (5456), 4245 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:50,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 5456 transitions. [2022-11-22 01:59:50,607 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 5456 transitions. Word has length 68 [2022-11-22 01:59:50,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:50,607 INFO L495 AbstractCegarLoop]: Abstraction has 4246 states and 5456 transitions. [2022-11-22 01:59:50,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:50,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 5456 transitions. [2022-11-22 01:59:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-22 01:59:50,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:50,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:50,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 01:59:50,610 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:50,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2095616936, now seen corresponding path program 1 times [2022-11-22 01:59:50,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:50,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433669407] [2022-11-22 01:59:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:50,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:51,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:51,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433669407] [2022-11-22 01:59:51,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433669407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:51,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:51,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 01:59:51,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453568506] [2022-11-22 01:59:51,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:51,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:59:51,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:51,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:59:51,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:59:51,048 INFO L87 Difference]: Start difference. First operand 4246 states and 5456 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:55,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:55,213 INFO L93 Difference]: Finished difference Result 8138 states and 10503 transitions. [2022-11-22 01:59:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 01:59:55,214 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-22 01:59:55,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:55,223 INFO L225 Difference]: With dead ends: 8138 [2022-11-22 01:59:55,223 INFO L226 Difference]: Without dead ends: 8136 [2022-11-22 01:59:55,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-22 01:59:55,226 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1444 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:55,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 2706 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:59:55,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8136 states. [2022-11-22 01:59:57,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8136 to 4575. [2022-11-22 01:59:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4575 states, 4574 states have (on average 1.2824661128115435) internal successors, (5866), 4574 states have internal predecessors, (5866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:57,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 5866 transitions. [2022-11-22 01:59:57,169 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 5866 transitions. Word has length 74 [2022-11-22 01:59:57,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:57,170 INFO L495 AbstractCegarLoop]: Abstraction has 4575 states and 5866 transitions. [2022-11-22 01:59:57,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:59:57,170 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 5866 transitions. [2022-11-22 01:59:57,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-22 01:59:57,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:57,171 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] [2022-11-22 01:59:57,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-22 01:59:57,171 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 01:59:57,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 229070017, now seen corresponding path program 1 times [2022-11-22 01:59:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:57,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158667202] [2022-11-22 01:59:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:57,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:57,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:57,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158667202] [2022-11-22 01:59:57,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158667202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:57,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:57,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 01:59:57,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271307281] [2022-11-22 01:59:57,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:57,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:59:57,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:57,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:59:57,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:59:57,565 INFO L87 Difference]: Start difference. First operand 4575 states and 5866 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:02,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:02,134 INFO L93 Difference]: Finished difference Result 8201 states and 10576 transitions. [2022-11-22 02:00:02,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:00:02,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-11-22 02:00:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:02,147 INFO L225 Difference]: With dead ends: 8201 [2022-11-22 02:00:02,147 INFO L226 Difference]: Without dead ends: 8199 [2022-11-22 02:00:02,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:00:02,149 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 1446 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:02,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 2735 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:00:02,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8199 states. [2022-11-22 02:00:04,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8199 to 4902. [2022-11-22 02:00:04,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4901 states have (on average 1.2801469087941237) internal successors, (6274), 4901 states have internal predecessors, (6274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 6274 transitions. [2022-11-22 02:00:04,454 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 6274 transitions. Word has length 75 [2022-11-22 02:00:04,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:04,454 INFO L495 AbstractCegarLoop]: Abstraction has 4902 states and 6274 transitions. [2022-11-22 02:00:04,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:04,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 6274 transitions. [2022-11-22 02:00:04,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-22 02:00:04,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:04,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:04,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-22 02:00:04,458 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 02:00:04,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:04,458 INFO L85 PathProgramCache]: Analyzing trace with hash -495396898, now seen corresponding path program 1 times [2022-11-22 02:00:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:04,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288086813] [2022-11-22 02:00:04,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:04,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:04,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:04,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288086813] [2022-11-22 02:00:04,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288086813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:04,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:04,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 02:00:04,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315766437] [2022-11-22 02:00:04,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:04,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:00:04,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:04,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:00:04,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:00:04,814 INFO L87 Difference]: Start difference. First operand 4902 states and 6274 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:09,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:09,201 INFO L93 Difference]: Finished difference Result 7675 states and 9895 transitions. [2022-11-22 02:00:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-22 02:00:09,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-11-22 02:00:09,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:09,210 INFO L225 Difference]: With dead ends: 7675 [2022-11-22 02:00:09,210 INFO L226 Difference]: Without dead ends: 7673 [2022-11-22 02:00:09,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-11-22 02:00:09,212 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1611 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:09,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 2748 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:00:09,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7673 states. [2022-11-22 02:00:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7673 to 4863. [2022-11-22 02:00:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 4862 states have (on average 1.2807486631016043) internal successors, (6227), 4862 states have internal predecessors, (6227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 6227 transitions. [2022-11-22 02:00:11,536 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 6227 transitions. Word has length 75 [2022-11-22 02:00:11,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:11,536 INFO L495 AbstractCegarLoop]: Abstraction has 4863 states and 6227 transitions. [2022-11-22 02:00:11,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:11,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 6227 transitions. [2022-11-22 02:00:11,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-22 02:00:11,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:11,538 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] [2022-11-22 02:00:11,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-22 02:00:11,539 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 02:00:11,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:11,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1871640008, now seen corresponding path program 1 times [2022-11-22 02:00:11,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:11,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160084328] [2022-11-22 02:00:11,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:11,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:11,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:11,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160084328] [2022-11-22 02:00:11,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160084328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:11,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:11,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:11,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763170313] [2022-11-22 02:00:11,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:11,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:11,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:11,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:11,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:11,659 INFO L87 Difference]: Start difference. First operand 4863 states and 6227 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:14,642 INFO L93 Difference]: Finished difference Result 9271 states and 12103 transitions. [2022-11-22 02:00:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:14,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-11-22 02:00:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:14,649 INFO L225 Difference]: With dead ends: 9271 [2022-11-22 02:00:14,650 INFO L226 Difference]: Without dead ends: 6445 [2022-11-22 02:00:14,652 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 [2022-11-22 02:00:14,653 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 294 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:14,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 702 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:00:14,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6445 states. [2022-11-22 02:00:17,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6445 to 6011. [2022-11-22 02:00:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 6010 states have (on average 1.2780366056572379) internal successors, (7681), 6010 states have internal predecessors, (7681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:17,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 7681 transitions. [2022-11-22 02:00:17,339 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 7681 transitions. Word has length 78 [2022-11-22 02:00:17,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:17,340 INFO L495 AbstractCegarLoop]: Abstraction has 6011 states and 7681 transitions. [2022-11-22 02:00:17,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:17,341 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 7681 transitions. [2022-11-22 02:00:17,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-22 02:00:17,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:17,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:17,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-22 02:00:17,344 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 02:00:17,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:17,345 INFO L85 PathProgramCache]: Analyzing trace with hash 767008424, now seen corresponding path program 1 times [2022-11-22 02:00:17,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:17,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665734575] [2022-11-22 02:00:17,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:17,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 02:00:17,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:17,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665734575] [2022-11-22 02:00:17,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665734575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:17,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:17,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:00:17,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033046348] [2022-11-22 02:00:17,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:17,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:00:17,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:17,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:00:17,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:00:17,702 INFO L87 Difference]: Start difference. First operand 6011 states and 7681 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:23,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:23,072 INFO L93 Difference]: Finished difference Result 12171 states and 15585 transitions. [2022-11-22 02:00:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:00:23,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 79 [2022-11-22 02:00:23,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:23,083 INFO L225 Difference]: With dead ends: 12171 [2022-11-22 02:00:23,083 INFO L226 Difference]: Without dead ends: 9631 [2022-11-22 02:00:23,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:00:23,088 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 1528 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:23,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 946 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:00:23,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9631 states. [2022-11-22 02:00:25,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9631 to 5997. [2022-11-22 02:00:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5997 states, 5996 states have (on average 1.2785190126751167) internal successors, (7666), 5996 states have internal predecessors, (7666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5997 states to 5997 states and 7666 transitions. [2022-11-22 02:00:25,800 INFO L78 Accepts]: Start accepts. Automaton has 5997 states and 7666 transitions. Word has length 79 [2022-11-22 02:00:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:25,800 INFO L495 AbstractCegarLoop]: Abstraction has 5997 states and 7666 transitions. [2022-11-22 02:00:25,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5997 states and 7666 transitions. [2022-11-22 02:00:25,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-22 02:00:25,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:25,802 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:25,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-22 02:00:25,802 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 02:00:25,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:25,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1073031664, now seen corresponding path program 1 times [2022-11-22 02:00:25,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:25,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32618576] [2022-11-22 02:00:25,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:25,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 02:00:26,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:26,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32618576] [2022-11-22 02:00:26,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32618576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:26,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:26,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:00:26,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308096201] [2022-11-22 02:00:26,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:26,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:00:26,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:26,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:00:26,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:00:26,075 INFO L87 Difference]: Start difference. First operand 5997 states and 7666 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:31,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:31,677 INFO L93 Difference]: Finished difference Result 11596 states and 14738 transitions. [2022-11-22 02:00:31,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:00:31,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 79 [2022-11-22 02:00:31,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:31,685 INFO L225 Difference]: With dead ends: 11596 [2022-11-22 02:00:31,685 INFO L226 Difference]: Without dead ends: 9058 [2022-11-22 02:00:31,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:00:31,689 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 1303 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:31,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 1258 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:00:31,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9058 states. [2022-11-22 02:00:34,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9058 to 5977. [2022-11-22 02:00:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5977 states, 5976 states have (on average 1.2791164658634537) internal successors, (7644), 5976 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:34,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5977 states to 5977 states and 7644 transitions. [2022-11-22 02:00:34,374 INFO L78 Accepts]: Start accepts. Automaton has 5977 states and 7644 transitions. Word has length 79 [2022-11-22 02:00:34,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:34,374 INFO L495 AbstractCegarLoop]: Abstraction has 5977 states and 7644 transitions. [2022-11-22 02:00:34,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:34,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5977 states and 7644 transitions. [2022-11-22 02:00:34,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-22 02:00:34,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:34,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:34,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-22 02:00:34,376 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 02:00:34,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:34,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1769204466, now seen corresponding path program 1 times [2022-11-22 02:00:34,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:34,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215974382] [2022-11-22 02:00:34,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:34,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:00:34,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:34,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215974382] [2022-11-22 02:00:34,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215974382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:34,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:34,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:00:34,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505993203] [2022-11-22 02:00:34,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:34,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:00:34,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:34,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:00:34,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:00:34,654 INFO L87 Difference]: Start difference. First operand 5977 states and 7644 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:41,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:41,722 INFO L93 Difference]: Finished difference Result 13110 states and 16662 transitions. [2022-11-22 02:00:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-22 02:00:41,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 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 80 [2022-11-22 02:00:41,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:41,734 INFO L225 Difference]: With dead ends: 13110 [2022-11-22 02:00:41,734 INFO L226 Difference]: Without dead ends: 10562 [2022-11-22 02:00:41,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:00:41,740 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1737 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:41,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 1613 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:00:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10562 states. [2022-11-22 02:00:44,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10562 to 5959. [2022-11-22 02:00:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5959 states, 5958 states have (on average 1.279624034911044) internal successors, (7624), 5958 states have internal predecessors, (7624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5959 states to 5959 states and 7624 transitions. [2022-11-22 02:00:44,597 INFO L78 Accepts]: Start accepts. Automaton has 5959 states and 7624 transitions. Word has length 80 [2022-11-22 02:00:44,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:44,597 INFO L495 AbstractCegarLoop]: Abstraction has 5959 states and 7624 transitions. [2022-11-22 02:00:44,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:44,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5959 states and 7624 transitions. [2022-11-22 02:00:44,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-22 02:00:44,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:44,600 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:44,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-22 02:00:44,601 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 02:00:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:44,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1142537267, now seen corresponding path program 1 times [2022-11-22 02:00:44,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:44,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080275683] [2022-11-22 02:00:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:44,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:45,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:45,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080275683] [2022-11-22 02:00:45,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080275683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:00:45,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642272120] [2022-11-22 02:00:45,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:45,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:45,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:45,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:00:45,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:00:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:45,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-22 02:00:45,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:00:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:50,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:01:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:01:33,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642272120] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:01:33,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1337521987] [2022-11-22 02:01:33,255 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-22 02:01:33,256 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:01:33,263 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:01:33,269 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:01:33,270 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:01:33,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:01:33,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:01:33,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:01:33,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:33,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:33,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:33,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:01:40,644 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:03:57,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1337521987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:57,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:03:57,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [16, 25, 24] total 97 [2022-11-22 02:03:57,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217931888] [2022-11-22 02:03:57,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:57,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-22 02:03:57,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:03:57,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-22 02:03:57,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1651, Invalid=7661, Unknown=0, NotChecked=0, Total=9312 [2022-11-22 02:03:57,464 INFO L87 Difference]: Start difference. First operand 5959 states and 7624 transitions. Second operand has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:43,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:43,677 INFO L93 Difference]: Finished difference Result 8591 states and 11031 transitions. [2022-11-22 02:04:43,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-22 02:04:43,678 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 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 80 [2022-11-22 02:04:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:43,687 INFO L225 Difference]: With dead ends: 8591 [2022-11-22 02:04:43,688 INFO L226 Difference]: Without dead ends: 5945 [2022-11-22 02:04:43,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 149 SyntacticMatches, 11 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5129 ImplicationChecksByTransitivity, 142.4s TimeCoverageRelationStatistics Valid=1651, Invalid=7661, Unknown=0, NotChecked=0, Total=9312 [2022-11-22 02:04:43,697 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 62 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 8534 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 8536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:43,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 676 Invalid, 8536 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 8534 Invalid, 0 Unknown, 0 Unchecked, 42.2s Time] [2022-11-22 02:04:43,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5945 states. [2022-11-22 02:04:48,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5945. [2022-11-22 02:04:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5945 states, 5944 states have (on average 1.2799461641991925) internal successors, (7608), 5944 states have internal predecessors, (7608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5945 states to 5945 states and 7608 transitions. [2022-11-22 02:04:48,083 INFO L78 Accepts]: Start accepts. Automaton has 5945 states and 7608 transitions. Word has length 80 [2022-11-22 02:04:48,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:48,083 INFO L495 AbstractCegarLoop]: Abstraction has 5945 states and 7608 transitions. [2022-11-22 02:04:48,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 5945 states and 7608 transitions. [2022-11-22 02:04:48,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-22 02:04:48,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:48,086 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:04:48,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:04:48,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-22 02:04:48,295 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 02:04:48,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:48,295 INFO L85 PathProgramCache]: Analyzing trace with hash -904258248, now seen corresponding path program 1 times [2022-11-22 02:04:48,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:48,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706185762] [2022-11-22 02:04:48,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:48,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:04:49,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:49,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706185762] [2022-11-22 02:04:49,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706185762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:04:49,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584831849] [2022-11-22 02:04:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:49,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:04:49,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:04:49,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:04:49,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:04:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:49,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-22 02:04:49,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:04:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:04:54,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:05:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:05:12,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584831849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:05:12,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1345511980] [2022-11-22 02:05:12,196 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-22 02:05:12,197 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:05:12,197 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:05:12,197 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:05:12,198 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:05:12,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:05:12,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:05:12,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:05:12,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:05:12,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:05:12,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:05:12,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:05:24,381 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:08:16,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1345511980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:08:16,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:08:16,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [16, 26, 25] total 108 [2022-11-22 02:08:16,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952613562] [2022-11-22 02:08:16,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:08:16,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-22 02:08:16,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:08:16,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-22 02:08:16,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2011, Invalid=9545, Unknown=0, NotChecked=0, Total=11556 [2022-11-22 02:08:16,432 INFO L87 Difference]: Start difference. First operand 5945 states and 7608 transitions. Second operand has 47 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 46 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:09:14,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:09:14,196 INFO L93 Difference]: Finished difference Result 8584 states and 11026 transitions. [2022-11-22 02:09:14,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-22 02:09:14,198 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 46 states have internal predecessors, (77), 0 states have call successors, (0), 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 80 [2022-11-22 02:09:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:09:14,204 INFO L225 Difference]: With dead ends: 8584 [2022-11-22 02:09:14,204 INFO L226 Difference]: Without dead ends: 5949 [2022-11-22 02:09:14,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 135 SyntacticMatches, 14 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6527 ImplicationChecksByTransitivity, 176.8s TimeCoverageRelationStatistics Valid=2011, Invalid=9545, Unknown=0, NotChecked=0, Total=11556 [2022-11-22 02:09:14,210 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 73 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 11359 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 11366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:09:14,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 626 Invalid, 11366 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 11359 Invalid, 0 Unknown, 0 Unchecked, 54.5s Time] [2022-11-22 02:09:14,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5949 states. [2022-11-22 02:09:17,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5949 to 5948. [2022-11-22 02:09:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 1.2796367916596603) internal successors, (7610), 5947 states have internal predecessors, (7610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:09:17,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 7610 transitions. [2022-11-22 02:09:17,090 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 7610 transitions. Word has length 80 [2022-11-22 02:09:17,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:09:17,091 INFO L495 AbstractCegarLoop]: Abstraction has 5948 states and 7610 transitions. [2022-11-22 02:09:17,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 46 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:09:17,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 7610 transitions. [2022-11-22 02:09:17,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:09:17,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:09:17,092 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:09:17,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:09:17,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-22 02:09:17,299 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 02:09:17,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:09:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1311489257, now seen corresponding path program 1 times [2022-11-22 02:09:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:09:17,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245143304] [2022-11-22 02:09:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:09:17,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:09:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:09:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:09:18,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:09:18,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245143304] [2022-11-22 02:09:18,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245143304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:09:18,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403135700] [2022-11-22 02:09:18,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:09:18,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:09:18,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:09:18,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:09:18,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:09:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:09:18,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-22 02:09:18,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:09:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:09:20,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:09:20,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403135700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:09:20,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:09:20,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2022-11-22 02:09:20,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25607864] [2022-11-22 02:09:20,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:09:20,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 02:09:20,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:09:20,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 02:09:20,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-11-22 02:09:20,275 INFO L87 Difference]: Start difference. First operand 5948 states and 7610 transitions. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:09:28,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:09:28,650 INFO L93 Difference]: Finished difference Result 12600 states and 16078 transitions. [2022-11-22 02:09:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-22 02:09:28,651 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-22 02:09:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:09:28,664 INFO L225 Difference]: With dead ends: 12600 [2022-11-22 02:09:28,664 INFO L226 Difference]: Without dead ends: 10078 [2022-11-22 02:09:28,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=197, Invalid=1209, Unknown=0, NotChecked=0, Total=1406 [2022-11-22 02:09:28,669 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 2821 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2821 SdHoareTripleChecker+Valid, 3277 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:09:28,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2821 Valid, 3277 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:09:28,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10078 states. [2022-11-22 02:09:32,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10078 to 6224. [2022-11-22 02:09:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 6223 states have (on average 1.2797686003535271) internal successors, (7964), 6223 states have internal predecessors, (7964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:09:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 7964 transitions. [2022-11-22 02:09:32,115 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 7964 transitions. Word has length 81 [2022-11-22 02:09:32,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:09:32,115 INFO L495 AbstractCegarLoop]: Abstraction has 6224 states and 7964 transitions. [2022-11-22 02:09:32,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:09:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 7964 transitions. [2022-11-22 02:09:32,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-22 02:09:32,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:09:32,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:09:32,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:09:32,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:09:32,318 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-22 02:09:32,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:09:32,318 INFO L85 PathProgramCache]: Analyzing trace with hash -861535858, now seen corresponding path program 1 times [2022-11-22 02:09:32,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:09:32,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970477210] [2022-11-22 02:09:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:09:32,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:09:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:09:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:09:33,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:09:33,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970477210] [2022-11-22 02:09:33,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970477210] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:09:33,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104724875] [2022-11-22 02:09:33,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:09:33,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:09:33,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:09:33,374 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:09:33,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b903017-8c32-4140-ad3c-41494f26b429/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:09:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:09:33,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-22 02:09:33,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:09:39,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:09:39,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:10:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:10:02,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104724875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:10:02,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [865509945] [2022-11-22 02:10:02,366 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-22 02:10:02,366 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:10:02,366 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:10:02,367 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:10:02,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:10:02,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:10:02,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:10:02,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:10:02,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:10:02,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:10:02,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:10:02,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:11:43,603 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:11:54,693 WARN L233 SmtUtils]: Spent 10.43s on a formula simplification. DAG size of input: 718 DAG size of output: 482 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)