./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI --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 64bit --witnessprinter.graph.data.programhash 8617496e14c7e02e61426a9b36d40149cd7ab2d833fa4b8ca7358faa220fba43 --- 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-5e519f3 [2022-11-03 02:02:36,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:02:36,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:02:36,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:02:36,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:02:36,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:02:36,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:02:36,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:02:36,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:02:36,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:02:36,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:02:36,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:02:36,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:02:36,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:02:36,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:02:36,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:02:36,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:02:36,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:02:36,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:02:36,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:02:36,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:02:36,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:02:36,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:02:36,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:02:36,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:02:36,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:02:36,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:02:36,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:02:36,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:02:36,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:02:36,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:02:36,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:02:36,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:02:36,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:02:36,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:02:36,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:02:36,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:02:36,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:02:36,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:02:36,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:02:36,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:02:36,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:02:36,476 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:02:36,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:02:36,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:02:36,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:02:36,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:02:36,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:02:36,479 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:02:36,479 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:02:36,480 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:02:36,480 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:02:36,481 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:02:36,482 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:02:36,482 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:02:36,482 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:02:36,482 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:02:36,483 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:02:36,483 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:02:36,483 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:02:36,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:02:36,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:02:36,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:02:36,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:02:36,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:02:36,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:02:36,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:02:36,486 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:02:36,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:02:36,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:02:36,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:02:36,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:02:36,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:02:36,488 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:02:36,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:02:36,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:02:36,489 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:02:36,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:02:36,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:02:36,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:02:36,490 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_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8617496e14c7e02e61426a9b36d40149cd7ab2d833fa4b8ca7358faa220fba43 [2022-11-03 02:02:36,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:02:36,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:02:36,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:02:36,905 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:02:36,906 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:02:36,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i [2022-11-03 02:02:36,981 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/data/109de2cf5/5291c7f326984fac8f023d3ed9be440f/FLAG07d7568be [2022-11-03 02:02:38,059 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:02:38,060 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i [2022-11-03 02:02:38,115 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/data/109de2cf5/5291c7f326984fac8f023d3ed9be440f/FLAG07d7568be [2022-11-03 02:02:38,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/data/109de2cf5/5291c7f326984fac8f023d3ed9be440f [2022-11-03 02:02:38,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:02:38,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:02:38,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:02:38,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:02:38,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:02:38,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:38" (1/1) ... [2022-11-03 02:02:38,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de83e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:38, skipping insertion in model container [2022-11-03 02:02:38,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:38" (1/1) ... [2022-11-03 02:02:38,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:02:38,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:02:42,022 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i[416111,416124] [2022-11-03 02:02:42,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:02:42,373 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:02:43,019 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i[416111,416124] [2022-11-03 02:02:43,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:02:43,263 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:02:43,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:43 WrapperNode [2022-11-03 02:02:43,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:02:43,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:02:43,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:02:43,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:02:43,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:43" (1/1) ... [2022-11-03 02:02:43,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:43" (1/1) ... [2022-11-03 02:02:44,269 INFO L138 Inliner]: procedures = 421, calls = 6369, calls flagged for inlining = 153, calls inlined = 149, statements flattened = 13296 [2022-11-03 02:02:44,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:02:44,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:02:44,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:02:44,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:02:44,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:43" (1/1) ... [2022-11-03 02:02:44,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:43" (1/1) ... [2022-11-03 02:02:44,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:43" (1/1) ... [2022-11-03 02:02:44,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:43" (1/1) ... [2022-11-03 02:02:44,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:43" (1/1) ... [2022-11-03 02:02:45,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:43" (1/1) ... [2022-11-03 02:02:45,093 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:43" (1/1) ... [2022-11-03 02:02:45,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:43" (1/1) ... [2022-11-03 02:02:45,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:02:45,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:02:45,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:02:45,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:02:45,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:43" (1/1) ... [2022-11-03 02:02:45,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:02:45,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:45,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:02:45,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:02:45,346 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_delete_i2c_busses [2022-11-03 02:02:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_delete_i2c_busses [2022-11-03 02:02:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_3 [2022-11-03 02:02:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_3 [2022-11-03 02:02:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:02:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:02:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_fixup_offset [2022-11-03 02:02:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_fixup_offset [2022-11-03 02:02:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure _OUTREGP [2022-11-03 02:02:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure _OUTREGP [2022-11-03 02:02:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:02:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:02:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_engine_idle___0 [2022-11-03 02:02:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_engine_idle___0 [2022-11-03 02:02:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_setup_i2c_bus [2022-11-03 02:02:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_setup_i2c_bus [2022-11-03 02:02:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_engine_idle___1 [2022-11-03 02:02:45,349 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_engine_idle___1 [2022-11-03 02:02:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure var_to_depth [2022-11-03 02:02:45,350 INFO L138 BoogieDeclarations]: Found implementation of procedure var_to_depth [2022-11-03 02:02:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_videomode_to_var [2022-11-03 02:02:45,350 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_videomode_to_var [2022-11-03 02:02:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 02:02:45,350 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 02:02:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_yclk_mclk_sync [2022-11-03 02:02:45,351 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_yclk_mclk_sync [2022-11-03 02:02:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_engine_flush___1 [2022-11-03 02:02:45,351 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_engine_flush___1 [2022-11-03 02:02:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:02:45,351 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:02:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_pm_init [2022-11-03 02:02:45,352 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_pm_init [2022-11-03 02:02:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure __INPLL___1 [2022-11-03 02:02:45,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __INPLL___1 [2022-11-03 02:02:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure __INPLL___0 [2022-11-03 02:02:45,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __INPLL___0 [2022-11-03 02:02:45,353 INFO L130 BoogieDeclarations]: Found specification of procedure __INPLL___3 [2022-11-03 02:02:45,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __INPLL___3 [2022-11-03 02:02:45,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_backlight_device [2022-11-03 02:02:45,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_backlight_device [2022-11-03 02:02:45,353 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:02:45,354 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:02:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:02:45,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:02:45,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:02:45,355 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_msleep___0 [2022-11-03 02:02:45,355 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_msleep___0 [2022-11-03 02:02:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 02:02:45,356 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 02:02:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_set_suspend [2022-11-03 02:02:45,357 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_set_suspend [2022-11-03 02:02:45,357 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_fifo_wait [2022-11-03 02:02:45,357 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_fifo_wait [2022-11-03 02:02:45,357 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 02:02:45,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 02:02:45,357 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:02:45,358 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:02:45,358 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_save_regs [2022-11-03 02:02:45,358 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_save_regs [2022-11-03 02:02:45,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:02:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2022-11-03 02:02:45,359 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2022-11-03 02:02:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 02:02:45,359 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 02:02:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:02:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_enable_dll [2022-11-03 02:02:45,360 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_enable_dll [2022-11-03 02:02:45,360 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-03 02:02:45,360 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-03 02:02:45,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:02:45,361 INFO L130 BoogieDeclarations]: Found specification of procedure __INPLL [2022-11-03 02:02:45,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __INPLL [2022-11-03 02:02:45,361 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_get_dstbpp [2022-11-03 02:02:45,361 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_get_dstbpp [2022-11-03 02:02:45,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:02:45,362 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:02:45,362 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_engine_idle [2022-11-03 02:02:45,362 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_engine_idle [2022-11-03 02:02:45,362 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_get_mon_name [2022-11-03 02:02:45,362 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_get_mon_name [2022-11-03 02:02:45,363 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_show_one_edid [2022-11-03 02:02:45,363 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_show_one_edid [2022-11-03 02:02:45,363 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_write_mode [2022-11-03 02:02:45,364 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_write_mode [2022-11-03 02:02:45,364 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:02:45,364 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:02:45,364 INFO L130 BoogieDeclarations]: Found specification of procedure INMC [2022-11-03 02:02:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure INMC [2022-11-03 02:02:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_bl_get_level_brightness [2022-11-03 02:02:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_bl_get_level_brightness [2022-11-03 02:02:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:02:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:02:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:02:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-03 02:02:45,367 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-03 02:02:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_backlight_device [2022-11-03 02:02:45,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_backlight_device [2022-11-03 02:02:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:02:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:02:45,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:02:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:02:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure fb_find_mode [2022-11-03 02:02:45,368 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_find_mode [2022-11-03 02:02:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-03 02:02:45,369 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-03 02:02:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 02:02:45,369 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 02:02:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pll_errata_after_data___3 [2022-11-03 02:02:45,369 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pll_errata_after_data___3 [2022-11-03 02:02:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pll_errata_after_data___1 [2022-11-03 02:02:45,371 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pll_errata_after_data___1 [2022-11-03 02:02:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pll_errata_after_data___0 [2022-11-03 02:02:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pll_errata_after_data___0 [2022-11-03 02:02:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure OUTMC [2022-11-03 02:02:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure OUTMC [2022-11-03 02:02:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure round_div [2022-11-03 02:02:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure round_div [2022-11-03 02:02:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_disable_dynamic_mode [2022-11-03 02:02:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_disable_dynamic_mode [2022-11-03 02:02:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_del_adapter [2022-11-03 02:02:45,383 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_del_adapter [2022-11-03 02:02:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 02:02:45,383 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 02:02:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_bl_update_status [2022-11-03 02:02:45,383 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_bl_update_status [2022-11-03 02:02:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-03 02:02:45,384 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-03 02:02:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:02:45,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:02:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:02:45,384 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:02:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_var_to_panel_info [2022-11-03 02:02:45,385 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_var_to_panel_info [2022-11-03 02:02:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_suspend [2022-11-03 02:02:45,385 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_suspend [2022-11-03 02:02:45,386 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:02:45,386 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:02:45,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:02:45,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:02:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:02:45,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:02:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_bin_file [2022-11-03 02:02:45,387 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_bin_file [2022-11-03 02:02:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure __OUTPLLP [2022-11-03 02:02:45,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __OUTPLLP [2022-11-03 02:02:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure framebuffer_release [2022-11-03 02:02:45,388 INFO L138 BoogieDeclarations]: Found implementation of procedure framebuffer_release [2022-11-03 02:02:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2022-11-03 02:02:45,388 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2022-11-03 02:02:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_crt_is_connected [2022-11-03 02:02:45,388 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_crt_is_connected [2022-11-03 02:02:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:02:45,388 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:02:45,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:02:45,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:02:45,389 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_probe_i2c_connector [2022-11-03 02:02:45,389 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_probe_i2c_connector [2022-11-03 02:02:45,389 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_enable_dynamic_mode [2022-11-03 02:02:45,389 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_enable_dynamic_mode [2022-11-03 02:02:45,389 INFO L130 BoogieDeclarations]: Found specification of procedure __OUTPLL [2022-11-03 02:02:45,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __OUTPLL [2022-11-03 02:02:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:02:45,390 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:02:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:02:45,390 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:02:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:02:45,390 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:02:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_engine_init [2022-11-03 02:02:45,391 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_engine_init [2022-11-03 02:02:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:02:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:02:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-03 02:02:45,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-03 02:02:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure __OUTPLLP___0 [2022-11-03 02:02:45,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __OUTPLLP___0 [2022-11-03 02:02:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_screen_blank [2022-11-03 02:02:45,392 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_screen_blank [2022-11-03 02:02:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure fb_dealloc_cmap [2022-11-03 02:02:45,392 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_dealloc_cmap [2022-11-03 02:02:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-11-03 02:02:45,392 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-11-03 02:02:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_unmap_ROM [2022-11-03 02:02:45,393 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_unmap_ROM [2022-11-03 02:02:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:02:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_set_par [2022-11-03 02:02:45,393 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_set_par [2022-11-03 02:02:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-11-03 02:02:45,393 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-11-03 02:02:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_pci_resume [2022-11-03 02:02:45,394 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_pci_resume [2022-11-03 02:02:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure bl_get_data [2022-11-03 02:02:45,394 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_get_data [2022-11-03 02:02:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modedb [2022-11-03 02:02:45,394 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modedb [2022-11-03 02:02:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_pci_unregister [2022-11-03 02:02:45,394 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_pci_unregister [2022-11-03 02:02:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 02:02:45,395 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 02:02:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_full_reset_sdram [2022-11-03 02:02:45,395 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_full_reset_sdram [2022-11-03 02:02:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_fifo_wait___2 [2022-11-03 02:02:45,395 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_fifo_wait___2 [2022-11-03 02:02:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_fifo_wait___1 [2022-11-03 02:02:45,396 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_fifo_wait___1 [2022-11-03 02:02:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_fifo_wait___0 [2022-11-03 02:02:45,396 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_fifo_wait___0 [2022-11-03 02:02:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_sync [2022-11-03 02:02:45,396 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_sync [2022-11-03 02:02:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_program_mode_reg [2022-11-03 02:02:45,396 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_program_mode_reg [2022-11-03 02:02:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:02:45,397 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:02:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:02:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure _radeon_msleep [2022-11-03 02:02:45,397 INFO L138 BoogieDeclarations]: Found implementation of procedure _radeon_msleep [2022-11-03 02:02:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure __OUTPLL___3 [2022-11-03 02:02:45,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __OUTPLL___3 [2022-11-03 02:02:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure __OUTPLL___1 [2022-11-03 02:02:45,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __OUTPLL___1 [2022-11-03 02:02:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure __OUTPLL___0 [2022-11-03 02:02:45,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __OUTPLL___0 [2022-11-03 02:02:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:02:45,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:02:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_map_ROM [2022-11-03 02:02:45,398 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_map_ROM [2022-11-03 02:02:45,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:02:45,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:02:45,399 INFO L130 BoogieDeclarations]: Found specification of procedure pci_request_region [2022-11-03 02:02:45,399 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_request_region [2022-11-03 02:02:45,399 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_setcolreg [2022-11-03 02:02:45,399 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_setcolreg [2022-11-03 02:02:45,399 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pll_errata_after_data [2022-11-03 02:02:45,400 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pll_errata_after_data [2022-11-03 02:02:45,400 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2022-11-03 02:02:45,400 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2022-11-03 02:02:45,400 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pm_restore_regs [2022-11-03 02:02:45,400 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pm_restore_regs [2022-11-03 02:02:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_3 [2022-11-03 02:02:45,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_3 [2022-11-03 02:02:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2022-11-03 02:02:45,405 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2022-11-03 02:02:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 02:02:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 02:02:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 02:02:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 02:02:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure radeon_pll_errata_after_index [2022-11-03 02:02:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure radeon_pll_errata_after_index [2022-11-03 02:02:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:02:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure radeonfb_engine_reset [2022-11-03 02:02:45,408 INFO L138 BoogieDeclarations]: Found implementation of procedure radeonfb_engine_reset [2022-11-03 02:02:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_bin_file [2022-11-03 02:02:45,408 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_bin_file [2022-11-03 02:02:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-03 02:02:45,408 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-03 02:02:46,855 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:02:46,859 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:02:48,408 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:03:17,784 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:03:23,875 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:03:23,876 INFO L300 CfgBuilder]: Removed 36 assume(true) statements. [2022-11-03 02:03:23,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:03:23 BoogieIcfgContainer [2022-11-03 02:03:23,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:03:23,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:03:23,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:03:23,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:03:23,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:02:38" (1/3) ... [2022-11-03 02:03:23,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36694c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:03:23, skipping insertion in model container [2022-11-03 02:03:23,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:43" (2/3) ... [2022-11-03 02:03:23,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36694c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:03:23, skipping insertion in model container [2022-11-03 02:03:23,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:03:23" (3/3) ... [2022-11-03 02:03:23,895 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--aty--radeonfb.ko-entry_point.cil.out.i [2022-11-03 02:03:23,921 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:03:23,923 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:03:24,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:03:24,076 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;@1730a356, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:03:24,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:03:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 3784 states, 2169 states have (on average 1.2374366067312126) internal successors, (2684), 2307 states have internal predecessors, (2684), 1531 states have call successors, (1531), 119 states have call predecessors, (1531), 118 states have return successors, (1524), 1511 states have call predecessors, (1524), 1524 states have call successors, (1524) [2022-11-03 02:03:24,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-03 02:03:24,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:24,117 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:24,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:24,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:24,123 INFO L85 PathProgramCache]: Analyzing trace with hash -295136497, now seen corresponding path program 1 times [2022-11-03 02:03:24,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:24,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98691288] [2022-11-03 02:03:24,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:24,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2022-11-03 02:03:26,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:26,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98691288] [2022-11-03 02:03:26,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98691288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:26,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:26,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:03:26,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944212523] [2022-11-03 02:03:26,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:26,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:26,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:26,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:26,593 INFO L87 Difference]: Start difference. First operand has 3784 states, 2169 states have (on average 1.2374366067312126) internal successors, (2684), 2307 states have internal predecessors, (2684), 1531 states have call successors, (1531), 119 states have call predecessors, (1531), 118 states have return successors, (1524), 1511 states have call predecessors, (1524), 1524 states have call successors, (1524) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-03 02:03:28,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:31,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:32,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:36,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:03:38,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:39,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:40,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:42,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:45,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:03:47,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:03:50,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:52,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:55,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:03:57,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:03:59,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:59,046 INFO L93 Difference]: Finished difference Result 10272 states and 15632 transitions. [2022-11-03 02:03:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:59,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 274 [2022-11-03 02:03:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:59,136 INFO L225 Difference]: With dead ends: 10272 [2022-11-03 02:03:59,136 INFO L226 Difference]: Without dead ends: 6525 [2022-11-03 02:03:59,179 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 [2022-11-03 02:03:59,182 INFO L413 NwaCegarLoop]: 6380 mSDtfsCounter, 4309 mSDsluCounter, 5493 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 3 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4311 SdHoareTripleChecker+Valid, 11543 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:59,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4311 Valid, 11543 Invalid, 689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 676 Invalid, 10 Unknown, 0 Unchecked, 31.8s Time] [2022-11-03 02:03:59,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6525 states. [2022-11-03 02:04:00,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6525 to 6521. [2022-11-03 02:04:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6521 states, 3622 states have (on average 1.2239094422970735) internal successors, (4433), 3809 states have internal predecessors, (4433), 2683 states have call successors, (2683), 216 states have call predecessors, (2683), 215 states have return successors, (2677), 2648 states have call predecessors, (2677), 2676 states have call successors, (2677) [2022-11-03 02:04:00,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6521 states to 6521 states and 9793 transitions. [2022-11-03 02:04:00,260 INFO L78 Accepts]: Start accepts. Automaton has 6521 states and 9793 transitions. Word has length 274 [2022-11-03 02:04:00,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:00,264 INFO L495 AbstractCegarLoop]: Abstraction has 6521 states and 9793 transitions. [2022-11-03 02:04:00,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-03 02:04:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 6521 states and 9793 transitions. [2022-11-03 02:04:00,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-03 02:04:00,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:00,285 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:04:00,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:04:00,286 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:00,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:00,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2011268442, now seen corresponding path program 1 times [2022-11-03 02:04:00,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:00,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880002634] [2022-11-03 02:04:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:00,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-03 02:04:01,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:01,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880002634] [2022-11-03 02:04:01,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880002634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:04:01,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:04:01,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:04:01,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712023819] [2022-11-03 02:04:01,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:04:01,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:04:01,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:01,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:04:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:04:01,840 INFO L87 Difference]: Start difference. First operand 6521 states and 9793 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:04:03,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:05,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:08,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:04:11,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:04:13,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:14,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:16,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:18,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:21,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:23,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:26,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:28,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:04:30,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:04:35,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:35,131 INFO L93 Difference]: Finished difference Result 12259 states and 18418 transitions. [2022-11-03 02:04:35,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:04:35,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 289 [2022-11-03 02:04:35,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:35,367 INFO L225 Difference]: With dead ends: 12259 [2022-11-03 02:04:35,367 INFO L226 Difference]: Without dead ends: 12256 [2022-11-03 02:04:35,376 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 [2022-11-03 02:04:35,377 INFO L413 NwaCegarLoop]: 6350 mSDtfsCounter, 4347 mSDsluCounter, 5391 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4348 SdHoareTripleChecker+Valid, 11410 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:35,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4348 Valid, 11410 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 665 Invalid, 9 Unknown, 0 Unchecked, 32.8s Time] [2022-11-03 02:04:35,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12256 states. [2022-11-03 02:04:36,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12256 to 12251. [2022-11-03 02:04:36,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12251 states, 6761 states have (on average 1.2221564857269636) internal successors, (8263), 7126 states have internal predecessors, (8263), 5076 states have call successors, (5076), 414 states have call predecessors, (5076), 413 states have return successors, (5072), 5011 states have call predecessors, (5072), 5069 states have call successors, (5072) [2022-11-03 02:04:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12251 states to 12251 states and 18411 transitions. [2022-11-03 02:04:36,794 INFO L78 Accepts]: Start accepts. Automaton has 12251 states and 18411 transitions. Word has length 289 [2022-11-03 02:04:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:36,801 INFO L495 AbstractCegarLoop]: Abstraction has 12251 states and 18411 transitions. [2022-11-03 02:04:36,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:04:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand 12251 states and 18411 transitions. [2022-11-03 02:04:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-11-03 02:04:36,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:36,812 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:04:36,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:04:36,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:36,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2077729008, now seen corresponding path program 1 times [2022-11-03 02:04:36,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:36,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707202835] [2022-11-03 02:04:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:36,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-03 02:04:38,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:38,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707202835] [2022-11-03 02:04:38,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707202835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:04:38,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:04:38,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:04:38,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529034149] [2022-11-03 02:04:38,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:04:38,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:04:38,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:38,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:04:38,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:04:38,080 INFO L87 Difference]: Start difference. First operand 12251 states and 18411 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:04:40,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:42,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:46,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:04:48,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:04:51,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:52,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:54,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:56,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:59,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:05:01,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:05:03,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:05:06,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:05:08,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:05:09,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:05:12,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:12,534 INFO L93 Difference]: Finished difference Result 12267 states and 18422 transitions. [2022-11-03 02:05:12,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:05:12,535 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), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 290 [2022-11-03 02:05:12,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:12,631 INFO L225 Difference]: With dead ends: 12267 [2022-11-03 02:05:12,631 INFO L226 Difference]: Without dead ends: 12264 [2022-11-03 02:05:12,641 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 [2022-11-03 02:05:12,642 INFO L413 NwaCegarLoop]: 6347 mSDtfsCounter, 4335 mSDsluCounter, 5394 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4336 SdHoareTripleChecker+Valid, 11410 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:12,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4336 Valid, 11410 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 667 Invalid, 8 Unknown, 0 Unchecked, 34.1s Time] [2022-11-03 02:05:12,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12264 states. [2022-11-03 02:05:13,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12264 to 12250. [2022-11-03 02:05:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12250 states, 6761 states have (on average 1.2221564857269636) internal successors, (8263), 7126 states have internal predecessors, (8263), 5073 states have call successors, (5073), 416 states have call predecessors, (5073), 415 states have return successors, (5069), 5008 states have call predecessors, (5069), 5066 states have call successors, (5069) [2022-11-03 02:05:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12250 states to 12250 states and 18405 transitions. [2022-11-03 02:05:13,977 INFO L78 Accepts]: Start accepts. Automaton has 12250 states and 18405 transitions. Word has length 290 [2022-11-03 02:05:13,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:13,978 INFO L495 AbstractCegarLoop]: Abstraction has 12250 states and 18405 transitions. [2022-11-03 02:05:13,978 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), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:05:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 12250 states and 18405 transitions. [2022-11-03 02:05:13,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-11-03 02:05:13,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:13,985 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:13,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:05:13,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:13,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:13,987 INFO L85 PathProgramCache]: Analyzing trace with hash 12373789, now seen corresponding path program 1 times [2022-11-03 02:05:13,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:05:13,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689673094] [2022-11-03 02:05:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:13,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:05:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-03 02:05:14,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:05:14,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689673094] [2022-11-03 02:05:14,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689673094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:05:14,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:05:14,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:05:14,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239662858] [2022-11-03 02:05:14,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:05:14,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:05:14,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:05:14,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:05:14,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:05:14,972 INFO L87 Difference]: Start difference. First operand 12250 states and 18405 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:05:17,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:05:19,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:05:20,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:05:23,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:05:25,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:05:27,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:05:28,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:05:31,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:05:33,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:05:36,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:05:38,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:05:41,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:05:43,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:05:45,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:05:46,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:46,790 INFO L93 Difference]: Finished difference Result 12258 states and 18412 transitions. [2022-11-03 02:05:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:05:46,791 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), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 291 [2022-11-03 02:05:46,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:46,885 INFO L225 Difference]: With dead ends: 12258 [2022-11-03 02:05:46,886 INFO L226 Difference]: Without dead ends: 12255 [2022-11-03 02:05:46,900 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 [2022-11-03 02:05:46,901 INFO L413 NwaCegarLoop]: 6347 mSDtfsCounter, 4330 mSDsluCounter, 5395 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4332 SdHoareTripleChecker+Valid, 11413 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:46,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4332 Valid, 11413 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 663 Invalid, 10 Unknown, 0 Unchecked, 31.4s Time] [2022-11-03 02:05:46,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12255 states. [2022-11-03 02:05:48,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12255 to 12251. [2022-11-03 02:05:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12251 states, 6762 states have (on average 1.2221236320615203) internal successors, (8264), 7127 states have internal predecessors, (8264), 5073 states have call successors, (5073), 416 states have call predecessors, (5073), 415 states have return successors, (5069), 5008 states have call predecessors, (5069), 5066 states have call successors, (5069) [2022-11-03 02:05:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12251 states to 12251 states and 18406 transitions. [2022-11-03 02:05:48,292 INFO L78 Accepts]: Start accepts. Automaton has 12251 states and 18406 transitions. Word has length 291 [2022-11-03 02:05:48,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:48,293 INFO L495 AbstractCegarLoop]: Abstraction has 12251 states and 18406 transitions. [2022-11-03 02:05:48,294 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), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:05:48,294 INFO L276 IsEmpty]: Start isEmpty. Operand 12251 states and 18406 transitions. [2022-11-03 02:05:48,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-03 02:05:48,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:48,302 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:05:48,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:05:48,302 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:48,303 INFO L85 PathProgramCache]: Analyzing trace with hash 381055923, now seen corresponding path program 1 times [2022-11-03 02:05:48,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:05:48,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96173961] [2022-11-03 02:05:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:48,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:05:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:05:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-03 02:05:49,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:05:49,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96173961] [2022-11-03 02:05:49,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96173961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:05:49,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:05:49,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:05:49,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325942329] [2022-11-03 02:05:49,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:05:49,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:05:49,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:05:49,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:05:49,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:05:49,295 INFO L87 Difference]: Start difference. First operand 12251 states and 18406 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:05:51,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:05:52,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:05:57,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:05:59,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:00,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:02,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:04,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:07,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:09,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:11,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:13,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:06:15,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:06:16,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:06:20,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:06:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:21,081 INFO L93 Difference]: Finished difference Result 12260 states and 18414 transitions. [2022-11-03 02:06:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:06:21,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 292 [2022-11-03 02:06:21,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:21,156 INFO L225 Difference]: With dead ends: 12260 [2022-11-03 02:06:21,157 INFO L226 Difference]: Without dead ends: 12257 [2022-11-03 02:06:21,164 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 [2022-11-03 02:06:21,165 INFO L413 NwaCegarLoop]: 6350 mSDtfsCounter, 4338 mSDsluCounter, 5401 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4339 SdHoareTripleChecker+Valid, 11419 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:21,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4339 Valid, 11419 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 668 Invalid, 7 Unknown, 0 Unchecked, 31.2s Time] [2022-11-03 02:06:21,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12257 states. [2022-11-03 02:06:22,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12257 to 12252. [2022-11-03 02:06:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12252 states, 6763 states have (on average 1.2220907881117846) internal successors, (8265), 7128 states have internal predecessors, (8265), 5073 states have call successors, (5073), 416 states have call predecessors, (5073), 415 states have return successors, (5069), 5008 states have call predecessors, (5069), 5066 states have call successors, (5069) [2022-11-03 02:06:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12252 states to 12252 states and 18407 transitions. [2022-11-03 02:06:22,403 INFO L78 Accepts]: Start accepts. Automaton has 12252 states and 18407 transitions. Word has length 292 [2022-11-03 02:06:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:06:22,405 INFO L495 AbstractCegarLoop]: Abstraction has 12252 states and 18407 transitions. [2022-11-03 02:06:22,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:06:22,406 INFO L276 IsEmpty]: Start isEmpty. Operand 12252 states and 18407 transitions. [2022-11-03 02:06:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-03 02:06:22,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:22,413 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:22,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:06:22,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:22,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:22,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1074694944, now seen corresponding path program 1 times [2022-11-03 02:06:22,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:22,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390134889] [2022-11-03 02:06:22,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:22,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-03 02:06:23,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:23,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390134889] [2022-11-03 02:06:23,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390134889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:23,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:23,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:23,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482599290] [2022-11-03 02:06:23,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:23,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:06:23,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:23,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:06:23,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:23,346 INFO L87 Difference]: Start difference. First operand 12252 states and 18407 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:06:25,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:27,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:31,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:06:33,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:06:35,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:37,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:39,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:41,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:44,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:46,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:49,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:06:51,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:06:53,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:06:56,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:06:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:06:58,373 INFO L93 Difference]: Finished difference Result 18003 states and 27053 transitions. [2022-11-03 02:06:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:06:58,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 293 [2022-11-03 02:06:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:06:58,498 INFO L225 Difference]: With dead ends: 18003 [2022-11-03 02:06:58,498 INFO L226 Difference]: Without dead ends: 17994 [2022-11-03 02:06:58,516 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 [2022-11-03 02:06:58,517 INFO L413 NwaCegarLoop]: 6372 mSDtfsCounter, 4359 mSDsluCounter, 5392 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4361 SdHoareTripleChecker+Valid, 11437 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:06:58,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4361 Valid, 11437 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 664 Invalid, 10 Unknown, 0 Unchecked, 34.3s Time] [2022-11-03 02:06:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17994 states. [2022-11-03 02:07:00,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17994 to 17984. [2022-11-03 02:07:00,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17984 states, 9903 states have (on average 1.2214480460466526) internal successors, (12096), 10447 states have internal predecessors, (12096), 7469 states have call successors, (7469), 612 states have call predecessors, (7469), 611 states have return successors, (7467), 7374 states have call predecessors, (7467), 7462 states have call successors, (7467) [2022-11-03 02:07:00,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17984 states to 17984 states and 27032 transitions. [2022-11-03 02:07:00,594 INFO L78 Accepts]: Start accepts. Automaton has 17984 states and 27032 transitions. Word has length 293 [2022-11-03 02:07:00,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:00,595 INFO L495 AbstractCegarLoop]: Abstraction has 17984 states and 27032 transitions. [2022-11-03 02:07:00,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:07:00,595 INFO L276 IsEmpty]: Start isEmpty. Operand 17984 states and 27032 transitions. [2022-11-03 02:07:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2022-11-03 02:07:00,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:00,657 INFO L195 NwaCegarLoop]: trace histogram [45, 13, 13, 13, 13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:00,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:07:00,657 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:00,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:00,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1725750167, now seen corresponding path program 1 times [2022-11-03 02:07:00,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:00,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652215863] [2022-11-03 02:07:00,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:00,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3523 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3518 trivial. 0 not checked. [2022-11-03 02:07:03,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:03,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652215863] [2022-11-03 02:07:03,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652215863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:03,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:03,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:03,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340251640] [2022-11-03 02:07:03,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:03,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:03,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:03,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:03,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:03,146 INFO L87 Difference]: Start difference. First operand 17984 states and 27032 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2022-11-03 02:07:05,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:07,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:08,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:12,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:15,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:19,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:21,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:23,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:25,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:28,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:30,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:33,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:35,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:37,609 INFO L93 Difference]: Finished difference Result 40221 states and 60154 transitions. [2022-11-03 02:07:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:37,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 812 [2022-11-03 02:07:37,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:37,841 INFO L225 Difference]: With dead ends: 40221 [2022-11-03 02:07:37,842 INFO L226 Difference]: Without dead ends: 22297 [2022-11-03 02:07:37,948 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 [2022-11-03 02:07:37,949 INFO L413 NwaCegarLoop]: 5406 mSDtfsCounter, 1035 mSDsluCounter, 5435 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 10518 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:37,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 10518 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 717 Invalid, 9 Unknown, 0 Unchecked, 33.6s Time] [2022-11-03 02:07:37,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22297 states. [2022-11-03 02:07:39,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22297 to 22265. [2022-11-03 02:07:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22265 states, 12642 states have (on average 1.2457680746717292) internal successors, (15749), 13282 states have internal predecessors, (15749), 8705 states have call successors, (8705), 918 states have call predecessors, (8705), 917 states have return successors, (8709), 8592 states have call predecessors, (8709), 8698 states have call successors, (8709) [2022-11-03 02:07:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22265 states to 22265 states and 33163 transitions. [2022-11-03 02:07:39,850 INFO L78 Accepts]: Start accepts. Automaton has 22265 states and 33163 transitions. Word has length 812 [2022-11-03 02:07:39,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:39,851 INFO L495 AbstractCegarLoop]: Abstraction has 22265 states and 33163 transitions. [2022-11-03 02:07:39,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2022-11-03 02:07:39,852 INFO L276 IsEmpty]: Start isEmpty. Operand 22265 states and 33163 transitions. [2022-11-03 02:07:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2022-11-03 02:07:39,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:39,921 INFO L195 NwaCegarLoop]: trace histogram [45, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:39,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:07:39,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:39,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:39,922 INFO L85 PathProgramCache]: Analyzing trace with hash -415884211, now seen corresponding path program 1 times [2022-11-03 02:07:39,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:39,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007533840] [2022-11-03 02:07:39,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:39,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3645 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3633 trivial. 0 not checked. [2022-11-03 02:07:42,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:42,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007533840] [2022-11-03 02:07:42,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007533840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:42,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:42,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944225410] [2022-11-03 02:07:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:42,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:42,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:42,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:42,263 INFO L87 Difference]: Start difference. First operand 22265 states and 33163 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2022-11-03 02:07:44,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:46,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:49,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:53,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:55,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:56,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:58,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:02,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:04,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:07,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:10,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:08:11,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:08:12,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:08:14,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:14,227 INFO L93 Difference]: Finished difference Result 34524 states and 51364 transitions. [2022-11-03 02:08:14,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:08:14,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 835 [2022-11-03 02:08:14,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:14,393 INFO L225 Difference]: With dead ends: 34524 [2022-11-03 02:08:14,393 INFO L226 Difference]: Without dead ends: 12318 [2022-11-03 02:08:14,506 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 [2022-11-03 02:08:14,507 INFO L413 NwaCegarLoop]: 5168 mSDtfsCounter, 17 mSDsluCounter, 5481 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10317 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:14,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10317 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 668 Invalid, 9 Unknown, 0 Unchecked, 31.3s Time] [2022-11-03 02:08:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12318 states. [2022-11-03 02:08:15,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12318 to 12300. [2022-11-03 02:08:15,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12300 states, 7054 states have (on average 1.251772044230224) internal successors, (8830), 7395 states have internal predecessors, (8830), 4715 states have call successors, (4715), 531 states have call predecessors, (4715), 530 states have return successors, (4714), 4653 states have call predecessors, (4714), 4708 states have call successors, (4714) [2022-11-03 02:08:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12300 states to 12300 states and 18259 transitions. [2022-11-03 02:08:15,671 INFO L78 Accepts]: Start accepts. Automaton has 12300 states and 18259 transitions. Word has length 835 [2022-11-03 02:08:15,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:15,672 INFO L495 AbstractCegarLoop]: Abstraction has 12300 states and 18259 transitions. [2022-11-03 02:08:15,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2022-11-03 02:08:15,672 INFO L276 IsEmpty]: Start isEmpty. Operand 12300 states and 18259 transitions. [2022-11-03 02:08:15,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2022-11-03 02:08:15,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:15,828 INFO L195 NwaCegarLoop]: trace histogram [45, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:15,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:08:15,829 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:15,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:15,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1664267612, now seen corresponding path program 1 times [2022-11-03 02:08:15,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:15,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073521962] [2022-11-03 02:08:15,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:15,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3895 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3883 trivial. 0 not checked. [2022-11-03 02:08:18,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:18,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073521962] [2022-11-03 02:08:18,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073521962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:18,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:18,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:08:18,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604875389] [2022-11-03 02:08:18,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:18,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:08:18,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:18,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:08:18,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:08:18,987 INFO L87 Difference]: Start difference. First operand 12300 states and 18259 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2022-11-03 02:08:21,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:24,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:26,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:08:29,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:08:31,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:33,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:36,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:39,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:42,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:44,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:47,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:08:50,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:08:51,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:51,520 INFO L93 Difference]: Finished difference Result 20310 states and 30187 transitions. [2022-11-03 02:08:51,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:08:51,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 859 [2022-11-03 02:08:51,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:51,585 INFO L225 Difference]: With dead ends: 20310 [2022-11-03 02:08:51,585 INFO L226 Difference]: Without dead ends: 12369 [2022-11-03 02:08:51,630 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 [2022-11-03 02:08:51,631 INFO L413 NwaCegarLoop]: 5206 mSDtfsCounter, 47 mSDsluCounter, 5488 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 6 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 10365 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:51,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 10365 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 680 Invalid, 10 Unknown, 0 Unchecked, 31.9s Time] [2022-11-03 02:08:51,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12369 states. [2022-11-03 02:08:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12369 to 12303. [2022-11-03 02:08:52,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12303 states, 7057 states have (on average 1.251665013461811) internal successors, (8833), 7398 states have internal predecessors, (8833), 4715 states have call successors, (4715), 531 states have call predecessors, (4715), 530 states have return successors, (4714), 4653 states have call predecessors, (4714), 4708 states have call successors, (4714) [2022-11-03 02:08:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12303 states to 12303 states and 18262 transitions. [2022-11-03 02:08:52,738 INFO L78 Accepts]: Start accepts. Automaton has 12303 states and 18262 transitions. Word has length 859 [2022-11-03 02:08:52,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:52,739 INFO L495 AbstractCegarLoop]: Abstraction has 12303 states and 18262 transitions. [2022-11-03 02:08:52,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2022-11-03 02:08:52,739 INFO L276 IsEmpty]: Start isEmpty. Operand 12303 states and 18262 transitions. [2022-11-03 02:08:52,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2022-11-03 02:08:52,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:52,778 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:52,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:08:52,779 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:52,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:52,779 INFO L85 PathProgramCache]: Analyzing trace with hash 558423184, now seen corresponding path program 1 times [2022-11-03 02:08:52,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:52,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691941180] [2022-11-03 02:08:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:52,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:55,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4171 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4159 trivial. 0 not checked. [2022-11-03 02:08:55,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:55,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691941180] [2022-11-03 02:08:55,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691941180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:55,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:55,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:08:55,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529811505] [2022-11-03 02:08:55,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:55,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:08:55,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:55,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:08:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:08:55,592 INFO L87 Difference]: Start difference. First operand 12303 states and 18262 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 02:08:57,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:59,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:01,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:04,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:09:06,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:09:09,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:09:11,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:09:13,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:15,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:16,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:18,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:23,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:26,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:29,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:32,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:09:34,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:09:36,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:36,055 INFO L93 Difference]: Finished difference Result 20339 states and 30226 transitions. [2022-11-03 02:09:36,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:09:36,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 874 [2022-11-03 02:09:36,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:36,109 INFO L225 Difference]: With dead ends: 20339 [2022-11-03 02:09:36,109 INFO L226 Difference]: Without dead ends: 12395 [2022-11-03 02:09:36,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:36,205 INFO L413 NwaCegarLoop]: 5258 mSDtfsCounter, 167 mSDsluCounter, 10936 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 45 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 15537 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:36,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 15537 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1005 Invalid, 10 Unknown, 0 Unchecked, 40.0s Time] [2022-11-03 02:09:36,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12395 states. [2022-11-03 02:09:36,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12395 to 12305. [2022-11-03 02:09:36,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12305 states, 7059 states have (on average 1.251593710157246) internal successors, (8835), 7400 states have internal predecessors, (8835), 4715 states have call successors, (4715), 531 states have call predecessors, (4715), 530 states have return successors, (4714), 4653 states have call predecessors, (4714), 4708 states have call successors, (4714) [2022-11-03 02:09:36,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12305 states to 12305 states and 18264 transitions. [2022-11-03 02:09:36,998 INFO L78 Accepts]: Start accepts. Automaton has 12305 states and 18264 transitions. Word has length 874 [2022-11-03 02:09:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:36,999 INFO L495 AbstractCegarLoop]: Abstraction has 12305 states and 18264 transitions. [2022-11-03 02:09:37,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 02:09:37,000 INFO L276 IsEmpty]: Start isEmpty. Operand 12305 states and 18264 transitions. [2022-11-03 02:09:37,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2022-11-03 02:09:37,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:37,034 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:37,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:09:37,034 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:37,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:37,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1561035472, now seen corresponding path program 1 times [2022-11-03 02:09:37,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:37,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154714318] [2022-11-03 02:09:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:37,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4171 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4159 trivial. 0 not checked. [2022-11-03 02:09:39,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:39,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154714318] [2022-11-03 02:09:39,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154714318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:39,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:39,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:39,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953800775] [2022-11-03 02:09:39,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:39,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:39,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:39,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:39,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:39,289 INFO L87 Difference]: Start difference. First operand 12305 states and 18264 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 02:09:41,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:43,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:45,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:47,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:09:49,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:09:51,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:09:53,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:09:56,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:57,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:59,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:03,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:06,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:08,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:11,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:10:13,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:10:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:14,831 INFO L93 Difference]: Finished difference Result 20260 states and 30102 transitions. [2022-11-03 02:10:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:10:14,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 878 [2022-11-03 02:10:14,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:14,876 INFO L225 Difference]: With dead ends: 20260 [2022-11-03 02:10:14,877 INFO L226 Difference]: Without dead ends: 12314 [2022-11-03 02:10:14,900 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 [2022-11-03 02:10:14,901 INFO L413 NwaCegarLoop]: 5159 mSDtfsCounter, 8 mSDsluCounter, 5478 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 10306 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:14,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 10306 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 667 Invalid, 10 Unknown, 0 Unchecked, 35.0s Time] [2022-11-03 02:10:14,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12314 states. [2022-11-03 02:10:15,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12314 to 12307. [2022-11-03 02:10:15,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12307 states, 7061 states have (on average 1.2515224472454327) internal successors, (8837), 7402 states have internal predecessors, (8837), 4715 states have call successors, (4715), 531 states have call predecessors, (4715), 530 states have return successors, (4714), 4653 states have call predecessors, (4714), 4708 states have call successors, (4714) [2022-11-03 02:10:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12307 states to 12307 states and 18266 transitions. [2022-11-03 02:10:15,661 INFO L78 Accepts]: Start accepts. Automaton has 12307 states and 18266 transitions. Word has length 878 [2022-11-03 02:10:15,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:15,663 INFO L495 AbstractCegarLoop]: Abstraction has 12307 states and 18266 transitions. [2022-11-03 02:10:15,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 02:10:15,663 INFO L276 IsEmpty]: Start isEmpty. Operand 12307 states and 18266 transitions. [2022-11-03 02:10:15,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2022-11-03 02:10:15,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:15,694 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:15,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:10:15,695 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:15,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:15,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1491670999, now seen corresponding path program 1 times [2022-11-03 02:10:15,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:15,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820331080] [2022-11-03 02:10:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:15,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4171 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4159 trivial. 0 not checked. [2022-11-03 02:10:18,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:18,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820331080] [2022-11-03 02:10:18,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820331080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:18,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:18,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:10:18,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521278590] [2022-11-03 02:10:18,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:18,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:10:18,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:18,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:10:18,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:10:18,317 INFO L87 Difference]: Start difference. First operand 12307 states and 18266 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 02:10:20,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:21,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:23,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:26,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:10:29,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:10:31,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:32,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:34,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:38,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:40,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:42,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:45,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:10:46,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:10:48,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:10:50,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:50,699 INFO L93 Difference]: Finished difference Result 20258 states and 30098 transitions. [2022-11-03 02:10:50,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:10:50,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 879 [2022-11-03 02:10:50,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:50,748 INFO L225 Difference]: With dead ends: 20258 [2022-11-03 02:10:50,748 INFO L226 Difference]: Without dead ends: 12310 [2022-11-03 02:10:50,779 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 [2022-11-03 02:10:50,780 INFO L413 NwaCegarLoop]: 5152 mSDtfsCounter, 1 mSDsluCounter, 5482 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10301 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:50,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10301 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 672 Invalid, 8 Unknown, 0 Unchecked, 31.9s Time] [2022-11-03 02:10:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12310 states. [2022-11-03 02:10:51,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12310 to 12308. [2022-11-03 02:10:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12308 states, 7062 states have (on average 1.2514868309260834) internal successors, (8838), 7403 states have internal predecessors, (8838), 4715 states have call successors, (4715), 531 states have call predecessors, (4715), 530 states have return successors, (4714), 4653 states have call predecessors, (4714), 4708 states have call successors, (4714) [2022-11-03 02:10:51,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12308 states to 12308 states and 18267 transitions. [2022-11-03 02:10:51,589 INFO L78 Accepts]: Start accepts. Automaton has 12308 states and 18267 transitions. Word has length 879 [2022-11-03 02:10:51,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:51,590 INFO L495 AbstractCegarLoop]: Abstraction has 12308 states and 18267 transitions. [2022-11-03 02:10:51,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 02:10:51,591 INFO L276 IsEmpty]: Start isEmpty. Operand 12308 states and 18267 transitions. [2022-11-03 02:10:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2022-11-03 02:10:51,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:51,626 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:51,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:10:51,627 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:10:51,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:51,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1515685191, now seen corresponding path program 1 times [2022-11-03 02:10:51,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:51,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505211002] [2022-11-03 02:10:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:51,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4171 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4159 trivial. 0 not checked. [2022-11-03 02:10:58,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:58,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505211002] [2022-11-03 02:10:58,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505211002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:58,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:58,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:10:58,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662969480] [2022-11-03 02:10:58,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:58,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:10:58,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:58,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:10:58,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:10:58,633 INFO L87 Difference]: Start difference. First operand 12308 states and 18267 transitions. Second operand has 9 states, 9 states have (on average 27.77777777777778) internal successors, (250), 9 states have internal predecessors, (250), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2022-11-03 02:11:00,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:03,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:05,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:11:10,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:11:12,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:11:14,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:11:20,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:23,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:24,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:28,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:34,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:38,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:41,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:43,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:11:44,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:11:46,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:11:47,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:11:48,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:11:50,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:11:55,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:11:58,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:12:04,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:12:04,818 INFO L93 Difference]: Finished difference Result 24886 states and 36923 transitions. [2022-11-03 02:12:04,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:12:04,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 27.77777777777778) internal successors, (250), 9 states have internal predecessors, (250), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) Word has length 881 [2022-11-03 02:12:04,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:12:04,924 INFO L225 Difference]: With dead ends: 24886 [2022-11-03 02:12:04,924 INFO L226 Difference]: Without dead ends: 16937 [2022-11-03 02:12:04,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:12:04,977 INFO L413 NwaCegarLoop]: 8894 mSDtfsCounter, 4579 mSDsluCounter, 42891 mSDsCounter, 0 mSdLazyCounter, 2764 mSolverCounterSat, 19 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 49557 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2764 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:12:04,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 49557 Invalid, 2795 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 2764 Invalid, 12 Unknown, 0 Unchecked, 65.2s Time] [2022-11-03 02:12:05,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16937 states. [2022-11-03 02:12:06,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16937 to 16821. [2022-11-03 02:12:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16821 states, 9680 states have (on average 1.2535123966942148) internal successors, (12134), 10144 states have internal predecessors, (12134), 6394 states have call successors, (6394), 747 states have call predecessors, (6394), 746 states have return successors, (6396), 6312 states have call predecessors, (6396), 6387 states have call successors, (6396) [2022-11-03 02:12:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16821 states to 16821 states and 24924 transitions. [2022-11-03 02:12:06,095 INFO L78 Accepts]: Start accepts. Automaton has 16821 states and 24924 transitions. Word has length 881 [2022-11-03 02:12:06,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:12:06,096 INFO L495 AbstractCegarLoop]: Abstraction has 16821 states and 24924 transitions. [2022-11-03 02:12:06,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.77777777777778) internal successors, (250), 9 states have internal predecessors, (250), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2022-11-03 02:12:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 16821 states and 24924 transitions. [2022-11-03 02:12:06,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2022-11-03 02:12:06,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:06,144 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:12:06,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:12:06,145 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:12:06,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:06,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1651226416, now seen corresponding path program 1 times [2022-11-03 02:12:06,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:06,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005208893] [2022-11-03 02:12:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:06,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4171 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4159 trivial. 0 not checked. [2022-11-03 02:12:08,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:08,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005208893] [2022-11-03 02:12:08,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005208893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:12:08,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:12:08,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:12:08,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666299169] [2022-11-03 02:12:08,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:12:08,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:12:08,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:12:08,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:12:08,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:12:08,996 INFO L87 Difference]: Start difference. First operand 16821 states and 24924 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2022-11-03 02:12:11,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:13,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:16,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:12:18,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:21,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:24,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:27,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:29,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:31,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:12:33,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:12:35,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:12:38,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:12:38,009 INFO L93 Difference]: Finished difference Result 32652 states and 48483 transitions. [2022-11-03 02:12:38,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:12:38,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) Word has length 882 [2022-11-03 02:12:38,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:12:38,093 INFO L225 Difference]: With dead ends: 32652 [2022-11-03 02:12:38,093 INFO L226 Difference]: Without dead ends: 24703 [2022-11-03 02:12:38,117 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 [2022-11-03 02:12:38,117 INFO L413 NwaCegarLoop]: 6809 mSDtfsCounter, 5135 mSDsluCounter, 5398 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5141 SdHoareTripleChecker+Valid, 11878 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:12:38,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5141 Valid, 11878 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 681 Invalid, 9 Unknown, 0 Unchecked, 27.9s Time] [2022-11-03 02:12:38,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24703 states. [2022-11-03 02:12:39,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24703 to 24676. [2022-11-03 02:12:39,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24676 states, 14163 states have (on average 1.251288568806044) internal successors, (17722), 14840 states have internal predecessors, (17722), 9446 states have call successors, (9446), 1067 states have call predecessors, (9446), 1066 states have return successors, (9453), 9328 states have call predecessors, (9453), 9439 states have call successors, (9453) [2022-11-03 02:12:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24676 states to 24676 states and 36621 transitions. [2022-11-03 02:12:39,722 INFO L78 Accepts]: Start accepts. Automaton has 24676 states and 36621 transitions. Word has length 882 [2022-11-03 02:12:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:12:39,723 INFO L495 AbstractCegarLoop]: Abstraction has 24676 states and 36621 transitions. [2022-11-03 02:12:39,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2022-11-03 02:12:39,724 INFO L276 IsEmpty]: Start isEmpty. Operand 24676 states and 36621 transitions. [2022-11-03 02:12:39,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2022-11-03 02:12:39,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:39,773 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:12:39,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:12:39,773 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:12:39,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:39,774 INFO L85 PathProgramCache]: Analyzing trace with hash 123844137, now seen corresponding path program 1 times [2022-11-03 02:12:39,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:39,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954206074] [2022-11-03 02:12:39,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:39,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4171 trivial. 0 not checked. [2022-11-03 02:12:42,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:42,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954206074] [2022-11-03 02:12:42,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954206074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:12:42,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:12:42,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:12:42,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246707823] [2022-11-03 02:12:42,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:12:42,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:12:42,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:12:42,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:12:42,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:12:42,386 INFO L87 Difference]: Start difference. First operand 24676 states and 36621 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 02:12:44,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:45,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:48,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:12:49,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:51,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:12:53,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:12:57,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:58,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:00,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:03,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:06,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:08,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:10,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:13:13,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:13:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:16,017 INFO L93 Difference]: Finished difference Result 32559 states and 48340 transitions. [2022-11-03 02:13:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:16,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 883 [2022-11-03 02:13:16,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:16,136 INFO L225 Difference]: With dead ends: 32559 [2022-11-03 02:13:16,136 INFO L226 Difference]: Without dead ends: 32556 [2022-11-03 02:13:16,153 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 [2022-11-03 02:13:16,154 INFO L413 NwaCegarLoop]: 9414 mSDtfsCounter, 5112 mSDsluCounter, 5390 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5116 SdHoareTripleChecker+Valid, 14474 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:16,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5116 Valid, 14474 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 871 Invalid, 10 Unknown, 0 Unchecked, 32.6s Time] [2022-11-03 02:13:16,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32556 states. [2022-11-03 02:13:18,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32556 to 32539. [2022-11-03 02:13:18,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32539 states, 18653 states have (on average 1.2500402080094355) internal successors, (23317), 19544 states have internal predecessors, (23317), 12495 states have call successors, (12495), 1391 states have call predecessors, (12495), 1390 states have return successors, (12507), 12341 states have call predecessors, (12507), 12488 states have call successors, (12507) [2022-11-03 02:13:18,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32539 states to 32539 states and 48319 transitions. [2022-11-03 02:13:18,381 INFO L78 Accepts]: Start accepts. Automaton has 32539 states and 48319 transitions. Word has length 883 [2022-11-03 02:13:18,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:18,382 INFO L495 AbstractCegarLoop]: Abstraction has 32539 states and 48319 transitions. [2022-11-03 02:13:18,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 02:13:18,382 INFO L276 IsEmpty]: Start isEmpty. Operand 32539 states and 48319 transitions. [2022-11-03 02:13:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2022-11-03 02:13:18,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:18,415 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 8, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:18,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:13:18,416 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:18,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:18,416 INFO L85 PathProgramCache]: Analyzing trace with hash 164712653, now seen corresponding path program 1 times [2022-11-03 02:13:18,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:18,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39399213] [2022-11-03 02:13:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:18,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:19,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:13:19,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768525503] [2022-11-03 02:13:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:19,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:13:19,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:13:19,870 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:13:19,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:13:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:29,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 26345 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:13:29,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:13:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4185 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 4151 trivial. 0 not checked. [2022-11-03 02:13:32,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:13:32,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:32,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39399213] [2022-11-03 02:13:32,335 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:13:32,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768525503] [2022-11-03 02:13:32,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768525503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:32,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:32,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:13:32,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454946805] [2022-11-03 02:13:32,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:32,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:32,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:32,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:32,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:32,340 INFO L87 Difference]: Start difference. First operand 32539 states and 48319 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2022-11-03 02:13:34,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:36,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:38,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:13:40,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:13:42,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:44,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:13:47,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:50,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:53,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:56,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:58,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:00,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:14:01,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:14:03,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:14:06,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:14:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:08,882 INFO L93 Difference]: Finished difference Result 56263 states and 83604 transitions. [2022-11-03 02:14:08,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:08,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 886 [2022-11-03 02:14:08,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:09,030 INFO L225 Difference]: With dead ends: 56263 [2022-11-03 02:14:09,031 INFO L226 Difference]: Without dead ends: 40459 [2022-11-03 02:14:09,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 884 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:09,082 INFO L413 NwaCegarLoop]: 9324 mSDtfsCounter, 4955 mSDsluCounter, 5398 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 1 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4959 SdHoareTripleChecker+Valid, 14393 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:09,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4959 Valid, 14393 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 850 Invalid, 12 Unknown, 0 Unchecked, 35.0s Time] [2022-11-03 02:14:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40459 states. [2022-11-03 02:14:11,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40459 to 40387. [2022-11-03 02:14:12,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40387 states, 23129 states have (on average 1.2493406545894765) internal successors, (28896), 24237 states have internal predecessors, (28896), 15542 states have call successors, (15542), 1716 states have call predecessors, (15542), 1715 states have return successors, (15558), 15351 states have call predecessors, (15558), 15535 states have call successors, (15558) [2022-11-03 02:14:12,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40387 states to 40387 states and 59996 transitions. [2022-11-03 02:14:12,151 INFO L78 Accepts]: Start accepts. Automaton has 40387 states and 59996 transitions. Word has length 886 [2022-11-03 02:14:12,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:12,152 INFO L495 AbstractCegarLoop]: Abstraction has 40387 states and 59996 transitions. [2022-11-03 02:14:12,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2022-11-03 02:14:12,152 INFO L276 IsEmpty]: Start isEmpty. Operand 40387 states and 59996 transitions. [2022-11-03 02:14:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2022-11-03 02:14:12,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:12,190 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:12,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:14:12,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:14:12,391 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:12,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:12,391 INFO L85 PathProgramCache]: Analyzing trace with hash -458340319, now seen corresponding path program 1 times [2022-11-03 02:14:12,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:12,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194130750] [2022-11-03 02:14:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:12,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4171 trivial. 0 not checked. [2022-11-03 02:14:14,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:14,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194130750] [2022-11-03 02:14:14,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194130750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:14,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:14,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:14,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765236185] [2022-11-03 02:14:14,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:14,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:14,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:14,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:14,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:14,739 INFO L87 Difference]: Start difference. First operand 40387 states and 59996 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 02:14:16,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:19,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:14:21,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:14:24,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:25,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:27,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:30,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:33,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:35,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:37,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:14:38,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:14:42,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:14:45,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:14:48,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:48,790 INFO L93 Difference]: Finished difference Result 55995 states and 83230 transitions. [2022-11-03 02:14:48,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:48,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 884 [2022-11-03 02:14:48,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:48,982 INFO L225 Difference]: With dead ends: 55995 [2022-11-03 02:14:48,982 INFO L226 Difference]: Without dead ends: 55992 [2022-11-03 02:14:49,002 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 [2022-11-03 02:14:49,002 INFO L413 NwaCegarLoop]: 6763 mSDtfsCounter, 5119 mSDsluCounter, 5395 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5121 SdHoareTripleChecker+Valid, 11826 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:49,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5121 Valid, 11826 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 676 Invalid, 7 Unknown, 0 Unchecked, 32.2s Time] [2022-11-03 02:14:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55992 states. [2022-11-03 02:14:52,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55992 to 55984. [2022-11-03 02:14:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55984 states, 32026 states have (on average 1.2484856054455755) internal successors, (39984), 33561 states have internal predecessors, (39984), 21605 states have call successors, (21605), 2353 states have call predecessors, (21605), 2352 states have return successors, (21630), 21341 states have call predecessors, (21630), 21598 states have call successors, (21630) [2022-11-03 02:14:53,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55984 states to 55984 states and 83219 transitions. [2022-11-03 02:14:53,030 INFO L78 Accepts]: Start accepts. Automaton has 55984 states and 83219 transitions. Word has length 884 [2022-11-03 02:14:53,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:53,031 INFO L495 AbstractCegarLoop]: Abstraction has 55984 states and 83219 transitions. [2022-11-03 02:14:53,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 02:14:53,031 INFO L276 IsEmpty]: Start isEmpty. Operand 55984 states and 83219 transitions. [2022-11-03 02:14:53,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2022-11-03 02:14:53,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:53,066 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:53,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:14:53,067 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:53,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:53,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1326184404, now seen corresponding path program 1 times [2022-11-03 02:14:53,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:53,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591562039] [2022-11-03 02:14:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:53,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4171 trivial. 0 not checked. [2022-11-03 02:14:55,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:55,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591562039] [2022-11-03 02:14:55,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591562039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:55,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:55,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:55,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583195565] [2022-11-03 02:14:55,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:55,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:55,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:55,328 INFO L87 Difference]: Start difference. First operand 55984 states and 83219 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 02:14:57,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:59,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:01,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:15:04,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:15:08,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:09,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:11,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:15,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:18,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:20,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:22,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:15:24,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:15:25,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:15:27,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:29,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:15:32,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:15:32,430 INFO L93 Difference]: Finished difference Result 56008 states and 83244 transitions. [2022-11-03 02:15:32,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:15:32,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 885 [2022-11-03 02:15:32,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:15:32,616 INFO L225 Difference]: With dead ends: 56008 [2022-11-03 02:15:32,616 INFO L226 Difference]: Without dead ends: 56005 [2022-11-03 02:15:32,638 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 [2022-11-03 02:15:32,638 INFO L413 NwaCegarLoop]: 9416 mSDtfsCounter, 5103 mSDsluCounter, 5396 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5109 SdHoareTripleChecker+Valid, 14482 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:15:32,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5109 Valid, 14482 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 872 Invalid, 10 Unknown, 0 Unchecked, 35.3s Time] [2022-11-03 02:15:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56005 states. [2022-11-03 02:15:36,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56005 to 55988. [2022-11-03 02:15:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55988 states, 32030 states have (on average 1.2484545738370278) internal successors, (39988), 33565 states have internal predecessors, (39988), 21605 states have call successors, (21605), 2353 states have call predecessors, (21605), 2352 states have return successors, (21630), 21341 states have call predecessors, (21630), 21598 states have call successors, (21630) [2022-11-03 02:15:36,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55988 states to 55988 states and 83223 transitions. [2022-11-03 02:15:36,485 INFO L78 Accepts]: Start accepts. Automaton has 55988 states and 83223 transitions. Word has length 885 [2022-11-03 02:15:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:15:36,485 INFO L495 AbstractCegarLoop]: Abstraction has 55988 states and 83223 transitions. [2022-11-03 02:15:36,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 3 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-03 02:15:36,486 INFO L276 IsEmpty]: Start isEmpty. Operand 55988 states and 83223 transitions. [2022-11-03 02:15:36,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2022-11-03 02:15:36,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:15:36,782 INFO L195 NwaCegarLoop]: trace histogram [48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 8, 8, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:15:36,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 02:15:36,783 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:15:36,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:15:36,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1286557740, now seen corresponding path program 1 times [2022-11-03 02:15:36,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:15:36,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971852030] [2022-11-03 02:15:36,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:15:36,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:15:38,290 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:15:38,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022445442] [2022-11-03 02:15:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:15:38,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:15:38,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:15:38,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:15:38,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ecd418-9869-4913-bd22-6943c6d83e6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:15:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:15:49,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 26349 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:15:49,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:15:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4185 trivial. 0 not checked. [2022-11-03 02:15:51,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:15:51,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:15:51,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971852030] [2022-11-03 02:15:51,834 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:15:51,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022445442] [2022-11-03 02:15:51,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022445442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:15:51,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:15:51,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:15:51,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311635047] [2022-11-03 02:15:51,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:15:51,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:15:51,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:15:51,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:15:51,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:15:51,837 INFO L87 Difference]: Start difference. First operand 55988 states and 83223 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 2 states have internal predecessors, (247), 2 states have call successors, (105), 2 states have call predecessors, (105), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2022-11-03 02:15:53,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:55,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:57,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:16:00,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:02,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:16:05,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:07,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:10,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:13,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:16:15,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []