./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/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_440ef6b2-d106-45b4-b13b-52413dcd1b55/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/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_440ef6b2-d106-45b4-b13b-52413dcd1b55/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 51be78885ca7a0fdf86d7aa977405871bdb86d4d67702760ccb1fc038e7f33e2 --- 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 03:44:05,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:44:05,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:44:05,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:44:05,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:44:05,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:44:05,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:44:05,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:44:05,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:44:05,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:44:05,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:44:05,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:44:05,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:44:05,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:44:05,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:44:05,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:44:05,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:44:05,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:44:05,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:44:05,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:44:05,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:44:05,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:44:05,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:44:05,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:44:05,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:44:05,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:44:05,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:44:05,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:44:05,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:44:05,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:44:05,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:44:05,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:44:05,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:44:05,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:44:05,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:44:05,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:44:05,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:44:05,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:44:05,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:44:05,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:44:05,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:44:05,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:44:05,460 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:44:05,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:44:05,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:44:05,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:44:05,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:44:05,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:44:05,462 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:44:05,462 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:44:05,462 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:44:05,470 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:44:05,471 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:44:05,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:44:05,472 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:44:05,472 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:44:05,472 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:44:05,472 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:44:05,473 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:44:05,473 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:44:05,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:44:05,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:44:05,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:44:05,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:44:05,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:44:05,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:44:05,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:44:05,476 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:44:05,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:44:05,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:44:05,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:44:05,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:44:05,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:44:05,479 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:44:05,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:44:05,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:44:05,480 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:44:05,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:44:05,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:44:05,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:44:05,481 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_440ef6b2-d106-45b4-b13b-52413dcd1b55/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51be78885ca7a0fdf86d7aa977405871bdb86d4d67702760ccb1fc038e7f33e2 [2022-11-03 03:44:05,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:44:05,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:44:05,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:44:05,871 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:44:05,872 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:44:05,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-11-03 03:44:05,984 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/bin/utaipan-7li7fVZpFI/data/07df0fced/d5226c0d2c3f4e5cbc5ddb1b2b93b063/FLAG15216f9db [2022-11-03 03:44:07,193 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:44:07,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-11-03 03:44:07,341 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/bin/utaipan-7li7fVZpFI/data/07df0fced/d5226c0d2c3f4e5cbc5ddb1b2b93b063/FLAG15216f9db [2022-11-03 03:44:07,436 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/bin/utaipan-7li7fVZpFI/data/07df0fced/d5226c0d2c3f4e5cbc5ddb1b2b93b063 [2022-11-03 03:44:07,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:44:07,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:44:07,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:44:07,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:44:07,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:44:07,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:07" (1/1) ... [2022-11-03 03:44:07,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e068f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:07, skipping insertion in model container [2022-11-03 03:44:07,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:07" (1/1) ... [2022-11-03 03:44:07,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:44:07,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:44:10,997 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_440ef6b2-d106-45b4-b13b-52413dcd1b55/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i[420085,420098] [2022-11-03 03:44:11,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:44:11,239 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:44:12,006 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_440ef6b2-d106-45b4-b13b-52413dcd1b55/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i[420085,420098] [2022-11-03 03:44:12,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:44:12,258 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:44:12,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12 WrapperNode [2022-11-03 03:44:12,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:44:12,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:44:12,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:44:12,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:44:12,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:12,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:12,802 INFO L138 Inliner]: procedures = 395, calls = 4058, calls flagged for inlining = 199, calls inlined = 146, statements flattened = 7281 [2022-11-03 03:44:12,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:44:12,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:44:12,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:44:12,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:44:12,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:12,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:12,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:12,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,210 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:44:13,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:44:13,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:44:13,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:44:13,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (1/1) ... [2022-11-03 03:44:13,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:44:13,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:44:13,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:44:13,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_440ef6b2-d106-45b4-b13b-52413dcd1b55/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:44:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_wait_until_sent [2022-11-03 03:44:13,412 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_wait_until_sent [2022-11-03 03:44:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-03 03:44:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:44:13,413 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:44:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_start [2022-11-03 03:44:13,414 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_start [2022-11-03 03:44:13,414 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_txidle [2022-11-03 03:44:13,414 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_txidle [2022-11-03 03:44:13,414 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_ioctl [2022-11-03 03:44:13,414 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_ioctl [2022-11-03 03:44:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:44:13,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:44:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopback_frame [2022-11-03 03:44:13,415 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopback_frame [2022-11-03 03:44:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2022-11-03 03:44:13,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2022-11-03 03:44:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure usc_start_receiver [2022-11-03 03:44:13,416 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_start_receiver [2022-11-03 03:44:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_serial_signals [2022-11-03 03:44:13,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_serial_signals [2022-11-03 03:44:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_trace_block [2022-11-03 03:44:13,417 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_trace_block [2022-11-03 03:44:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 03:44:13,418 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 03:44:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 03:44:13,418 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 03:44:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mgsl_ops_disconnect_2 [2022-11-03 03:44:13,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mgsl_ops_disconnect_2 [2022-11-03 03:44:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2022-11-03 03:44:13,419 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2022-11-03 03:44:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:44:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:44:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 03:44:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure startup [2022-11-03 03:44:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure startup [2022-11-03 03:44:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure load_next_tx_holding_buffer [2022-11-03 03:44:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure load_next_tx_holding_buffer [2022-11-03 03:44:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:44:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:44:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_tty_port [2022-11-03 03:44:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_tty_port [2022-11-03 03:44:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:44:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure dtr_rts [2022-11-03 03:44:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure dtr_rts [2022-11-03 03:44:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 03:44:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 03:44:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 03:44:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 03:44:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-03 03:44:13,426 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-03 03:44:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:44:13,427 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:44:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmset [2022-11-03 03:44:13,427 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmset [2022-11-03 03:44:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure usc_OutDmaReg [2022-11-03 03:44:13,428 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_OutDmaReg [2022-11-03 03:44:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:44:13,428 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:44:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_cancel_transmit [2022-11-03 03:44:13,430 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_cancel_transmit [2022-11-03 03:44:13,430 INFO L130 BoogieDeclarations]: Found specification of procedure usc_load_txfifo [2022-11-03 03:44:13,430 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_load_txfifo [2022-11-03 03:44:13,431 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-03 03:44:13,431 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-03 03:44:13,431 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_tx_timeout [2022-11-03 03:44:13,431 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_tx_timeout [2022-11-03 03:44:13,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:44:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 03:44:13,432 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 03:44:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:44:13,432 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:44:13,433 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 03:44:13,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 03:44:13,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:44:13,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:44:13,434 INFO L130 BoogieDeclarations]: Found specification of procedure usc_reset [2022-11-03 03:44:13,435 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_reset [2022-11-03 03:44:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_free_frame_memory [2022-11-03 03:44:13,435 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_free_frame_memory [2022-11-03 03:44:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure usc_InReg [2022-11-03 03:44:13,435 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_InReg [2022-11-03 03:44:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-11-03 03:44:13,437 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-11-03 03:44:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure usc_enable_loopback [2022-11-03 03:44:13,437 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_enable_loopback [2022-11-03 03:44:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_load_tx_dma_buffer [2022-11-03 03:44:13,438 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_load_tx_dma_buffer [2022-11-03 03:44:13,439 INFO L130 BoogieDeclarations]: Found specification of procedure usc_DmaCmd [2022-11-03 03:44:13,439 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_DmaCmd [2022-11-03 03:44:13,439 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_flush_buffer [2022-11-03 03:44:13,440 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_flush_buffer [2022-11-03 03:44:13,441 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 03:44:13,441 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 03:44:13,441 INFO L130 BoogieDeclarations]: Found specification of procedure carrier_raised [2022-11-03 03:44:13,441 INFO L138 BoogieDeclarations]: Found implementation of procedure carrier_raised [2022-11-03 03:44:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure usc_RTCmd [2022-11-03 03:44:13,442 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_RTCmd [2022-11-03 03:44:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:44:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_sdlc_mode [2022-11-03 03:44:13,442 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_sdlc_mode [2022-11-03 03:44:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure usc_stop_receiver [2022-11-03 03:44:13,443 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_stop_receiver [2022-11-03 03:44:13,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:44:13,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:44:13,444 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 03:44:13,444 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 03:44:13,444 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 03:44:13,445 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_add_device [2022-11-03 03:44:13,446 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_add_device [2022-11-03 03:44:13,446 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_unthrottle [2022-11-03 03:44:13,450 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_unthrottle [2022-11-03 03:44:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_throttle [2022-11-03 03:44:13,450 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_throttle [2022-11-03 03:44:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure usc_OutReg [2022-11-03 03:44:13,452 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_OutReg [2022-11-03 03:44:13,452 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:44:13,454 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:44:13,454 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmget [2022-11-03 03:44:13,454 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmget [2022-11-03 03:44:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_set_termios [2022-11-03 03:44:13,461 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_set_termios [2022-11-03 03:44:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 03:44:13,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 03:44:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:44:13,462 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:44:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure usc_stop_transmitter [2022-11-03 03:44:13,462 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_stop_transmitter [2022-11-03 03:44:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:44:13,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:44:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2022-11-03 03:44:13,463 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2022-11-03 03:44:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:44:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:44:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_flush_chars [2022-11-03 03:44:13,464 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_flush_chars [2022-11-03 03:44:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 03:44:13,464 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 03:44:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 03:44:13,465 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 03:44:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_send_xchar [2022-11-03 03:44:13,465 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_send_xchar [2022-11-03 03:44:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_change_params [2022-11-03 03:44:13,465 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_change_params [2022-11-03 03:44:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:44:13,466 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:44:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:44:13,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:44:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure usc_get_serial_signals [2022-11-03 03:44:13,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_get_serial_signals [2022-11-03 03:44:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_reset_rx_dma_buffers [2022-11-03 03:44:13,467 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_reset_rx_dma_buffers [2022-11-03 03:44:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:44:13,467 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:44:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:44:13,468 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:44:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure usc_start_transmitter [2022-11-03 03:44:13,468 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_start_transmitter [2022-11-03 03:44:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 03:44:13,469 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 03:44:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2022-11-03 03:44:13,469 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2022-11-03 03:44:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 03:44:13,469 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 03:44:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_paranoia_check [2022-11-03 03:44:13,470 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_paranoia_check [2022-11-03 03:44:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure usc_InDmaReg [2022-11-03 03:44:13,470 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_InDmaReg [2022-11-03 03:44:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:44:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:44:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_active [2022-11-03 03:44:13,471 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_active [2022-11-03 03:44:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_stop [2022-11-03 03:44:13,471 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_stop [2022-11-03 03:44:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-03 03:44:13,472 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-03 03:44:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:44:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure synclink_remove_one [2022-11-03 03:44:13,472 INFO L138 BoogieDeclarations]: Found implementation of procedure synclink_remove_one [2022-11-03 03:44:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 03:44:13,473 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 03:44:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure synclink_cleanup [2022-11-03 03:44:13,473 INFO L138 BoogieDeclarations]: Found implementation of procedure synclink_cleanup [2022-11-03 03:44:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-03 03:44:13,474 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-03 03:44:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 03:44:13,474 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 03:44:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-03 03:44:13,474 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-03 03:44:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 03:44:13,475 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 03:44:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2022-11-03 03:44:13,475 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2022-11-03 03:44:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_write_room [2022-11-03 03:44:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_write_room [2022-11-03 03:44:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_break [2022-11-03 03:44:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_break [2022-11-03 03:44:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_allocate_device [2022-11-03 03:44:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_allocate_device [2022-11-03 03:44:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-03 03:44:13,477 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-03 03:44:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_install [2022-11-03 03:44:13,477 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_install [2022-11-03 03:44:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hung_up_p [2022-11-03 03:44:13,478 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hung_up_p [2022-11-03 03:44:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_release_resources [2022-11-03 03:44:13,478 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_release_resources [2022-11-03 03:44:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 03:44:13,478 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 03:44:13,479 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 03:44:13,479 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 03:44:13,479 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:44:13,479 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:44:13,479 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_send_done [2022-11-03 03:44:13,480 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_send_done [2022-11-03 03:44:13,480 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 03:44:13,480 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 03:44:13,480 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-03 03:44:13,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-03 03:44:13,481 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:44:13,481 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:44:13,481 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_ioctl [2022-11-03 03:44:13,481 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_ioctl [2022-11-03 03:44:13,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-11-03 03:44:13,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-11-03 03:44:13,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:44:13,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:44:13,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:44:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure msgl_get_icount [2022-11-03 03:44:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure msgl_get_icount [2022-11-03 03:44:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_chars_in_buffer [2022-11-03 03:44:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_chars_in_buffer [2022-11-03 03:44:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 03:44:13,484 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 03:44:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2022-11-03 03:44:13,484 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2022-11-03 03:44:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 03:44:13,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 03:44:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_put_char [2022-11-03 03:44:13,490 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_put_char [2022-11-03 03:44:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_program_hw [2022-11-03 03:44:13,491 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_program_hw [2022-11-03 03:44:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure shutdown [2022-11-03 03:44:13,491 INFO L138 BoogieDeclarations]: Found implementation of procedure shutdown [2022-11-03 03:44:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_hangup [2022-11-03 03:44:13,491 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_hangup [2022-11-03 03:44:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 03:44:13,493 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 03:44:13,495 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-11-03 03:44:13,495 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-11-03 03:44:13,496 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-03 03:44:13,496 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-03 03:44:13,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:44:13,496 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_alloc_frame_memory [2022-11-03 03:44:13,496 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_alloc_frame_memory [2022-11-03 03:44:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-03 03:44:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-03 03:44:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-03 03:44:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-03 03:44:14,740 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:44:14,745 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:44:43,625 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:44:48,268 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:44:48,268 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:44:48,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:48 BoogieIcfgContainer [2022-11-03 03:44:48,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:44:48,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:44:48,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:44:48,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:44:48,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:44:07" (1/3) ... [2022-11-03 03:44:48,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117213f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:48, skipping insertion in model container [2022-11-03 03:44:48,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:12" (2/3) ... [2022-11-03 03:44:48,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117213f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:48, skipping insertion in model container [2022-11-03 03:44:48,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:48" (3/3) ... [2022-11-03 03:44:48,292 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-11-03 03:44:48,320 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:44:48,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:44:48,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:44:48,477 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;@66c40f4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:44:48,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:44:48,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 2417 states, 1405 states have (on average 1.3516014234875444) internal successors, (1899), 1482 states have internal predecessors, (1899), 890 states have call successors, (890), 120 states have call predecessors, (890), 120 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) [2022-11-03 03:44:48,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 03:44:48,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:48,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:48,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:48,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:48,536 INFO L85 PathProgramCache]: Analyzing trace with hash -142964827, now seen corresponding path program 1 times [2022-11-03 03:44:48,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:48,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940634323] [2022-11-03 03:44:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:48,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:44:49,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:49,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940634323] [2022-11-03 03:44:49,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940634323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:49,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:49,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:49,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303961424] [2022-11-03 03:44:49,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:49,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:49,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:49,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:49,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:49,460 INFO L87 Difference]: Start difference. First operand has 2417 states, 1405 states have (on average 1.3516014234875444) internal successors, (1899), 1482 states have internal predecessors, (1899), 890 states have call successors, (890), 120 states have call predecessors, (890), 120 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:44:51,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:53,832 WARN L539 Checker$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 03:44:55,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:57,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:01,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:04,275 WARN L539 Checker$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 03:45:07,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:07,509 INFO L93 Difference]: Finished difference Result 7215 states and 11012 transitions. [2022-11-03 03:45:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:45:07,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-11-03 03:45:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:07,615 INFO L225 Difference]: With dead ends: 7215 [2022-11-03 03:45:07,616 INFO L226 Difference]: Without dead ends: 4795 [2022-11-03 03:45:07,650 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 03:45:07,656 INFO L413 NwaCegarLoop]: 5128 mSDtfsCounter, 3629 mSDsluCounter, 3641 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 8447 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:07,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3632 Valid, 8447 Invalid, 782 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 775 Invalid, 4 Unknown, 0 Unchecked, 17.5s Time] [2022-11-03 03:45:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4795 states. [2022-11-03 03:45:08,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4795 to 4789. [2022-11-03 03:45:08,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 2784 states have (on average 1.3487787356321839) internal successors, (3755), 2928 states have internal predecessors, (3755), 1766 states have call successors, (1766), 239 states have call predecessors, (1766), 238 states have return successors, (1763), 1719 states have call predecessors, (1763), 1760 states have call successors, (1763) [2022-11-03 03:45:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 7284 transitions. [2022-11-03 03:45:08,505 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 7284 transitions. Word has length 19 [2022-11-03 03:45:08,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:08,506 INFO L495 AbstractCegarLoop]: Abstraction has 4789 states and 7284 transitions. [2022-11-03 03:45:08,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:45:08,508 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 7284 transitions. [2022-11-03 03:45:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 03:45:08,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:08,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:08,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:45:08,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:08,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:08,523 INFO L85 PathProgramCache]: Analyzing trace with hash 91319653, now seen corresponding path program 1 times [2022-11-03 03:45:08,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:08,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624667186] [2022-11-03 03:45:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:08,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:45:09,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:09,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624667186] [2022-11-03 03:45:09,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624667186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:09,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:09,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:45:09,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986436031] [2022-11-03 03:45:09,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:09,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:09,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:09,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:09,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:09,081 INFO L87 Difference]: Start difference. First operand 4789 states and 7284 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:45:11,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:13,538 WARN L539 Checker$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 03:45:16,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:18,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:20,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:26,588 WARN L539 Checker$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 03:45:28,910 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 03:45:31,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:31,479 INFO L93 Difference]: Finished difference Result 7939 states and 12117 transitions. [2022-11-03 03:45:31,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:31,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-11-03 03:45:31,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:31,532 INFO L225 Difference]: With dead ends: 7939 [2022-11-03 03:45:31,532 INFO L226 Difference]: Without dead ends: 5373 [2022-11-03 03:45:31,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 03:45:31,559 INFO L413 NwaCegarLoop]: 4239 mSDtfsCounter, 1190 mSDsluCounter, 7701 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 368 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 11275 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:31,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 11275 Invalid, 1437 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [368 Valid, 1065 Invalid, 4 Unknown, 0 Unchecked, 22.0s Time] [2022-11-03 03:45:31,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5373 states. [2022-11-03 03:45:31,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5373 to 4789. [2022-11-03 03:45:31,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 2784 states have (on average 1.348419540229885) internal successors, (3754), 2928 states have internal predecessors, (3754), 1766 states have call successors, (1766), 239 states have call predecessors, (1766), 238 states have return successors, (1763), 1719 states have call predecessors, (1763), 1760 states have call successors, (1763) [2022-11-03 03:45:31,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 7283 transitions. [2022-11-03 03:45:31,984 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 7283 transitions. Word has length 28 [2022-11-03 03:45:31,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:31,985 INFO L495 AbstractCegarLoop]: Abstraction has 4789 states and 7283 transitions. [2022-11-03 03:45:31,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:45:31,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 7283 transitions. [2022-11-03 03:45:31,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 03:45:31,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:31,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:31,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:45:31,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:32,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:32,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1748487048, now seen corresponding path program 1 times [2022-11-03 03:45:32,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:32,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556327884] [2022-11-03 03:45:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:32,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:45:32,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:32,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556327884] [2022-11-03 03:45:32,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556327884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:32,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:32,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:45:32,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953158323] [2022-11-03 03:45:32,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:32,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:32,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:32,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:32,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:32,724 INFO L87 Difference]: Start difference. First operand 4789 states and 7283 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:45:35,226 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 03:45:37,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:45:39,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:41,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:43,657 WARN L539 Checker$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 03:45:47,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:51,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:54,386 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 03:45:58,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:58,715 INFO L93 Difference]: Finished difference Result 7915 states and 12078 transitions. [2022-11-03 03:45:58,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:45:58,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-11-03 03:45:58,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:58,811 INFO L225 Difference]: With dead ends: 7915 [2022-11-03 03:45:58,811 INFO L226 Difference]: Without dead ends: 7904 [2022-11-03 03:45:58,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 03:45:58,830 INFO L413 NwaCegarLoop]: 5812 mSDtfsCounter, 4433 mSDsluCounter, 9382 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 189 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4436 SdHoareTripleChecker+Valid, 14431 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:58,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4436 Valid, 14431 Invalid, 1627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [189 Valid, 1434 Invalid, 4 Unknown, 0 Unchecked, 25.5s Time] [2022-11-03 03:45:58,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2022-11-03 03:45:59,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 7316. [2022-11-03 03:45:59,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7316 states, 4257 states have (on average 1.3464881371858115) internal successors, (5732), 4476 states have internal predecessors, (5732), 2680 states have call successors, (2680), 379 states have call predecessors, (2680), 378 states have return successors, (2680), 2610 states have call predecessors, (2680), 2674 states have call successors, (2680) [2022-11-03 03:45:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7316 states to 7316 states and 11092 transitions. [2022-11-03 03:45:59,577 INFO L78 Accepts]: Start accepts. Automaton has 7316 states and 11092 transitions. Word has length 29 [2022-11-03 03:45:59,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:59,578 INFO L495 AbstractCegarLoop]: Abstraction has 7316 states and 11092 transitions. [2022-11-03 03:45:59,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:45:59,579 INFO L276 IsEmpty]: Start isEmpty. Operand 7316 states and 11092 transitions. [2022-11-03 03:45:59,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 03:45:59,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:59,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:59,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:45:59,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:59,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:59,587 INFO L85 PathProgramCache]: Analyzing trace with hash -796822693, now seen corresponding path program 1 times [2022-11-03 03:45:59,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:59,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121268699] [2022-11-03 03:45:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:59,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:45:59,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:59,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121268699] [2022-11-03 03:45:59,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121268699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:59,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:59,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:59,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415690631] [2022-11-03 03:45:59,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:59,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:45:59,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:59,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:45:59,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:45:59,906 INFO L87 Difference]: Start difference. First operand 7316 states and 11092 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:46:02,084 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 03:46:05,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:46:07,711 WARN L539 Checker$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 03:46:10,853 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 03:46:13,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:13,487 INFO L93 Difference]: Finished difference Result 16314 states and 24554 transitions. [2022-11-03 03:46:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:13,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-11-03 03:46:13,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:13,573 INFO L225 Difference]: With dead ends: 16314 [2022-11-03 03:46:13,574 INFO L226 Difference]: Without dead ends: 8999 [2022-11-03 03:46:13,634 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 03:46:13,635 INFO L413 NwaCegarLoop]: 4425 mSDtfsCounter, 1890 mSDsluCounter, 3381 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 7482 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:13,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1891 Valid, 7482 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 998 Invalid, 3 Unknown, 0 Unchecked, 13.2s Time] [2022-11-03 03:46:13,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8999 states. [2022-11-03 03:46:14,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8999 to 8653. [2022-11-03 03:46:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8653 states, 4905 states have (on average 1.3243628950050967) internal successors, (6496), 5148 states have internal predecessors, (6496), 3262 states have call successors, (3262), 486 states have call predecessors, (3262), 485 states have return successors, (3262), 3168 states have call predecessors, (3262), 3256 states have call successors, (3262) [2022-11-03 03:46:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8653 states to 8653 states and 13020 transitions. [2022-11-03 03:46:14,371 INFO L78 Accepts]: Start accepts. Automaton has 8653 states and 13020 transitions. Word has length 36 [2022-11-03 03:46:14,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:14,372 INFO L495 AbstractCegarLoop]: Abstraction has 8653 states and 13020 transitions. [2022-11-03 03:46:14,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:46:14,372 INFO L276 IsEmpty]: Start isEmpty. Operand 8653 states and 13020 transitions. [2022-11-03 03:46:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 03:46:14,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:14,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:14,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:46:14,379 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:14,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:14,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2082286460, now seen corresponding path program 1 times [2022-11-03 03:46:14,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:14,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219258097] [2022-11-03 03:46:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:14,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:14,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:14,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219258097] [2022-11-03 03:46:14,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219258097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:14,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:14,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:14,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222667905] [2022-11-03 03:46:14,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:14,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:14,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:14,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:14,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:14,675 INFO L87 Difference]: Start difference. First operand 8653 states and 13020 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:46:16,852 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 03:46:19,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:21,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:46:22,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:24,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:26,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:30,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:32,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:34,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:34,288 INFO L93 Difference]: Finished difference Result 12507 states and 18788 transitions. [2022-11-03 03:46:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:34,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-03 03:46:34,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:34,400 INFO L225 Difference]: With dead ends: 12507 [2022-11-03 03:46:34,400 INFO L226 Difference]: Without dead ends: 12504 [2022-11-03 03:46:34,423 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 03:46:34,423 INFO L413 NwaCegarLoop]: 5941 mSDtfsCounter, 3602 mSDsluCounter, 3654 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3607 SdHoareTripleChecker+Valid, 9265 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:34,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3607 Valid, 9265 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 854 Invalid, 4 Unknown, 0 Unchecked, 19.1s Time] [2022-11-03 03:46:34,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12504 states. [2022-11-03 03:46:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12504 to 12500. [2022-11-03 03:46:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12500 states, 7117 states have (on average 1.3254180132078124) internal successors, (9433), 7470 states have internal predecessors, (9433), 4670 states have call successors, (4670), 713 states have call predecessors, (4670), 712 states have return successors, (4679), 4538 states have call predecessors, (4679), 4664 states have call successors, (4679) [2022-11-03 03:46:35,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12500 states to 12500 states and 18782 transitions. [2022-11-03 03:46:35,592 INFO L78 Accepts]: Start accepts. Automaton has 12500 states and 18782 transitions. Word has length 35 [2022-11-03 03:46:35,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:35,593 INFO L495 AbstractCegarLoop]: Abstraction has 12500 states and 18782 transitions. [2022-11-03 03:46:35,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:46:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 12500 states and 18782 transitions. [2022-11-03 03:46:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 03:46:35,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:35,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:35,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:46:35,597 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:35,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:35,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2090785033, now seen corresponding path program 1 times [2022-11-03 03:46:35,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:35,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786257568] [2022-11-03 03:46:35,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:35,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:36,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:36,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786257568] [2022-11-03 03:46:36,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786257568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:36,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:36,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24041422] [2022-11-03 03:46:36,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:36,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:36,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:36,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:36,220 INFO L87 Difference]: Start difference. First operand 12500 states and 18782 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 03:46:38,478 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 03:46:40,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:41,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:43,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:46:45,856 WARN L539 Checker$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 03:46:53,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:53,097 INFO L93 Difference]: Finished difference Result 20776 states and 31332 transitions. [2022-11-03 03:46:53,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:53,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-03 03:46:53,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:53,311 INFO L225 Difference]: With dead ends: 20776 [2022-11-03 03:46:53,312 INFO L226 Difference]: Without dead ends: 13219 [2022-11-03 03:46:53,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 03:46:53,360 INFO L413 NwaCegarLoop]: 3800 mSDtfsCounter, 1182 mSDsluCounter, 7463 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 364 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 10600 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:53,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 10600 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1045 Invalid, 3 Unknown, 0 Unchecked, 16.3s Time] [2022-11-03 03:46:53,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13219 states. [2022-11-03 03:46:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13219 to 12502. [2022-11-03 03:46:54,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12502 states, 7119 states have (on average 1.3253265908133165) internal successors, (9435), 7472 states have internal predecessors, (9435), 4670 states have call successors, (4670), 713 states have call predecessors, (4670), 712 states have return successors, (4679), 4538 states have call predecessors, (4679), 4664 states have call successors, (4679) [2022-11-03 03:46:54,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12502 states to 12502 states and 18784 transitions. [2022-11-03 03:46:54,558 INFO L78 Accepts]: Start accepts. Automaton has 12502 states and 18784 transitions. Word has length 36 [2022-11-03 03:46:54,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:54,559 INFO L495 AbstractCegarLoop]: Abstraction has 12502 states and 18784 transitions. [2022-11-03 03:46:54,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 03:46:54,559 INFO L276 IsEmpty]: Start isEmpty. Operand 12502 states and 18784 transitions. [2022-11-03 03:46:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 03:46:54,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:54,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:54,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:46:54,563 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:54,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:54,563 INFO L85 PathProgramCache]: Analyzing trace with hash 124789392, now seen corresponding path program 1 times [2022-11-03 03:46:54,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:54,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546209411] [2022-11-03 03:46:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:54,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:54,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:54,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546209411] [2022-11-03 03:46:54,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546209411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:54,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:54,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:54,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178310982] [2022-11-03 03:46:54,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:54,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:54,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:54,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:54,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:54,968 INFO L87 Difference]: Start difference. First operand 12502 states and 18784 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:46:57,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:00,052 WARN L539 Checker$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 03:47:02,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:06,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:11,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:11,153 INFO L93 Difference]: Finished difference Result 12618 states and 18923 transitions. [2022-11-03 03:47:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:11,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-11-03 03:47:11,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:11,235 INFO L225 Difference]: With dead ends: 12618 [2022-11-03 03:47:11,236 INFO L226 Difference]: Without dead ends: 12615 [2022-11-03 03:47:11,245 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 03:47:11,246 INFO L413 NwaCegarLoop]: 6007 mSDtfsCounter, 3626 mSDsluCounter, 3657 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3629 SdHoareTripleChecker+Valid, 9334 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:11,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3629 Valid, 9334 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 868 Invalid, 3 Unknown, 0 Unchecked, 15.6s Time] [2022-11-03 03:47:11,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12615 states. [2022-11-03 03:47:12,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12615 to 11205. [2022-11-03 03:47:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11205 states, 6397 states have (on average 1.3287478505549477) internal successors, (8500), 6713 states have internal predecessors, (8500), 4176 states have call successors, (4176), 632 states have call predecessors, (4176), 631 states have return successors, (4179), 4061 states have call predecessors, (4179), 4170 states have call successors, (4179) [2022-11-03 03:47:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11205 states to 11205 states and 16855 transitions. [2022-11-03 03:47:12,246 INFO L78 Accepts]: Start accepts. Automaton has 11205 states and 16855 transitions. Word has length 36 [2022-11-03 03:47:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:12,247 INFO L495 AbstractCegarLoop]: Abstraction has 11205 states and 16855 transitions. [2022-11-03 03:47:12,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:47:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 11205 states and 16855 transitions. [2022-11-03 03:47:12,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 03:47:12,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:12,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:12,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:47:12,251 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:12,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:12,252 INFO L85 PathProgramCache]: Analyzing trace with hash -428072705, now seen corresponding path program 1 times [2022-11-03 03:47:12,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:12,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14652313] [2022-11-03 03:47:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:12,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:12,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:12,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14652313] [2022-11-03 03:47:12,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14652313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:12,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:12,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:12,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866337922] [2022-11-03 03:47:12,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:12,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:12,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:12,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:12,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:12,522 INFO L87 Difference]: Start difference. First operand 11205 states and 16855 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:47:14,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:17,915 WARN L539 Checker$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 03:47:20,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:23,705 WARN L539 Checker$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 03:47:30,079 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 03:47:30,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:30,127 INFO L93 Difference]: Finished difference Result 11213 states and 16862 transitions. [2022-11-03 03:47:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:30,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-11-03 03:47:30,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:30,212 INFO L225 Difference]: With dead ends: 11213 [2022-11-03 03:47:30,212 INFO L226 Difference]: Without dead ends: 11210 [2022-11-03 03:47:30,222 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 03:47:30,223 INFO L413 NwaCegarLoop]: 5943 mSDtfsCounter, 3623 mSDsluCounter, 3660 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3626 SdHoareTripleChecker+Valid, 9273 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:30,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3626 Valid, 9273 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 854 Invalid, 3 Unknown, 0 Unchecked, 17.0s Time] [2022-11-03 03:47:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11210 states. [2022-11-03 03:47:31,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11210 to 11206. [2022-11-03 03:47:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11206 states, 6398 states have (on average 1.3286964676461395) internal successors, (8501), 6714 states have internal predecessors, (8501), 4176 states have call successors, (4176), 632 states have call predecessors, (4176), 631 states have return successors, (4179), 4061 states have call predecessors, (4179), 4170 states have call successors, (4179) [2022-11-03 03:47:31,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11206 states to 11206 states and 16856 transitions. [2022-11-03 03:47:31,342 INFO L78 Accepts]: Start accepts. Automaton has 11206 states and 16856 transitions. Word has length 37 [2022-11-03 03:47:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:31,345 INFO L495 AbstractCegarLoop]: Abstraction has 11206 states and 16856 transitions. [2022-11-03 03:47:31,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:47:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 11206 states and 16856 transitions. [2022-11-03 03:47:31,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 03:47:31,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:31,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:31,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:47:31,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:31,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:31,351 INFO L85 PathProgramCache]: Analyzing trace with hash -386923661, now seen corresponding path program 1 times [2022-11-03 03:47:31,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:31,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951122393] [2022-11-03 03:47:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:31,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:31,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951122393] [2022-11-03 03:47:31,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951122393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:31,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:31,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:31,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164876283] [2022-11-03 03:47:31,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:31,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:31,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:31,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:31,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:31,642 INFO L87 Difference]: Start difference. First operand 11206 states and 16856 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:47:33,820 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 03:47:36,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:38,475 WARN L539 Checker$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 03:47:40,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:42,235 WARN L539 Checker$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 03:47:46,571 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 03:47:50,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:50,172 INFO L93 Difference]: Finished difference Result 17531 states and 26359 transitions. [2022-11-03 03:47:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:50,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-11-03 03:47:50,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:50,272 INFO L225 Difference]: With dead ends: 17531 [2022-11-03 03:47:50,273 INFO L226 Difference]: Without dead ends: 17489 [2022-11-03 03:47:50,294 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 03:47:50,295 INFO L413 NwaCegarLoop]: 5958 mSDtfsCounter, 3565 mSDsluCounter, 3642 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3567 SdHoareTripleChecker+Valid, 9275 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:50,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3567 Valid, 9275 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 861 Invalid, 3 Unknown, 0 Unchecked, 17.7s Time] [2022-11-03 03:47:50,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17489 states. [2022-11-03 03:47:51,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17489 to 17484. [2022-11-03 03:47:51,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17484 states, 10009 states have (on average 1.330102907383355) internal successors, (13313), 10503 states have internal predecessors, (13313), 6484 states have call successors, (6484), 993 states have call predecessors, (6484), 990 states have return successors, (6502), 6304 states have call predecessors, (6502), 6478 states have call successors, (6502) [2022-11-03 03:47:51,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17484 states to 17484 states and 26299 transitions. [2022-11-03 03:47:51,795 INFO L78 Accepts]: Start accepts. Automaton has 17484 states and 26299 transitions. Word has length 38 [2022-11-03 03:47:51,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:51,796 INFO L495 AbstractCegarLoop]: Abstraction has 17484 states and 26299 transitions. [2022-11-03 03:47:51,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:47:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand 17484 states and 26299 transitions. [2022-11-03 03:47:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 03:47:51,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:51,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:51,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:47:51,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:51,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash 43580582, now seen corresponding path program 1 times [2022-11-03 03:47:51,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:51,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16767477] [2022-11-03 03:47:51,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:51,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:52,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:52,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16767477] [2022-11-03 03:47:52,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16767477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:52,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:52,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:52,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320385994] [2022-11-03 03:47:52,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:52,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:52,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:52,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:52,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:52,452 INFO L87 Difference]: Start difference. First operand 17484 states and 26299 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:47:54,628 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 03:47:57,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:47:59,597 WARN L539 Checker$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 03:48:02,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:06,811 WARN L539 Checker$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 03:48:10,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:10,264 INFO L93 Difference]: Finished difference Result 25068 states and 37679 transitions. [2022-11-03 03:48:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:10,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2022-11-03 03:48:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:10,450 INFO L225 Difference]: With dead ends: 25068 [2022-11-03 03:48:10,450 INFO L226 Difference]: Without dead ends: 25065 [2022-11-03 03:48:10,467 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 03:48:10,468 INFO L413 NwaCegarLoop]: 4820 mSDtfsCounter, 3627 mSDsluCounter, 3654 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3635 SdHoareTripleChecker+Valid, 8144 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:10,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3635 Valid, 8144 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 722 Invalid, 5 Unknown, 0 Unchecked, 16.7s Time] [2022-11-03 03:48:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25065 states. [2022-11-03 03:48:12,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25065 to 25059. [2022-11-03 03:48:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25059 states, 14347 states have (on average 1.3293371436537256) internal successors, (19072), 15057 states have internal predecessors, (19072), 9284 states have call successors, (9284), 1433 states have call predecessors, (9284), 1427 states have return successors, (9314), 9024 states have call predecessors, (9314), 9278 states have call successors, (9314) [2022-11-03 03:48:12,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25059 states to 25059 states and 37670 transitions. [2022-11-03 03:48:12,303 INFO L78 Accepts]: Start accepts. Automaton has 25059 states and 37670 transitions. Word has length 40 [2022-11-03 03:48:12,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:12,303 INFO L495 AbstractCegarLoop]: Abstraction has 25059 states and 37670 transitions. [2022-11-03 03:48:12,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:48:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 25059 states and 37670 transitions. [2022-11-03 03:48:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 03:48:12,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:12,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:12,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:48:12,308 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:12,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:12,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1349416614, now seen corresponding path program 1 times [2022-11-03 03:48:12,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:12,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839205431] [2022-11-03 03:48:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:12,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:12,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:12,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839205431] [2022-11-03 03:48:12,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839205431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:12,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:12,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:12,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692033585] [2022-11-03 03:48:12,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:12,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:12,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:12,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:12,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:12,692 INFO L87 Difference]: Start difference. First operand 25059 states and 37670 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:48:14,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:16,127 WARN L539 Checker$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 03:48:18,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:48:19,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:23,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:23,932 INFO L93 Difference]: Finished difference Result 25491 states and 38324 transitions. [2022-11-03 03:48:23,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:23,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-11-03 03:48:23,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:24,128 INFO L225 Difference]: With dead ends: 25491 [2022-11-03 03:48:24,128 INFO L226 Difference]: Without dead ends: 25488 [2022-11-03 03:48:24,152 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 03:48:24,153 INFO L413 NwaCegarLoop]: 3571 mSDtfsCounter, 3636 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3639 SdHoareTripleChecker+Valid, 4185 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:24,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3639 Valid, 4185 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 373 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 03:48:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25488 states. [2022-11-03 03:48:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25488 to 25488. [2022-11-03 03:48:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25488 states, 14541 states have (on average 1.3270063957086857) internal successors, (19296), 15267 states have internal predecessors, (19296), 9495 states have call successors, (9495), 1456 states have call predecessors, (9495), 1451 states have return successors, (9529), 9227 states have call predecessors, (9529), 9490 states have call successors, (9529) [2022-11-03 03:48:26,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25488 states to 25488 states and 38320 transitions. [2022-11-03 03:48:26,013 INFO L78 Accepts]: Start accepts. Automaton has 25488 states and 38320 transitions. Word has length 41 [2022-11-03 03:48:26,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:26,014 INFO L495 AbstractCegarLoop]: Abstraction has 25488 states and 38320 transitions. [2022-11-03 03:48:26,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:48:26,014 INFO L276 IsEmpty]: Start isEmpty. Operand 25488 states and 38320 transitions. [2022-11-03 03:48:26,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 03:48:26,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:26,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:26,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:48:26,018 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:26,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:26,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1119334487, now seen corresponding path program 1 times [2022-11-03 03:48:26,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:26,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261313300] [2022-11-03 03:48:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:26,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:26,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:26,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261313300] [2022-11-03 03:48:26,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261313300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:26,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:26,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:26,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187275950] [2022-11-03 03:48:26,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:26,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:26,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:26,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:26,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:26,446 INFO L87 Difference]: Start difference. First operand 25488 states and 38320 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:48:28,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:31,531 WARN L539 Checker$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 03:48:33,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:38,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:41,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:41,573 INFO L93 Difference]: Finished difference Result 25503 states and 38332 transitions. [2022-11-03 03:48:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:41,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2022-11-03 03:48:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:41,694 INFO L225 Difference]: With dead ends: 25503 [2022-11-03 03:48:41,694 INFO L226 Difference]: Without dead ends: 25463 [2022-11-03 03:48:41,707 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 03:48:41,707 INFO L413 NwaCegarLoop]: 4359 mSDtfsCounter, 3627 mSDsluCounter, 3658 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3630 SdHoareTripleChecker+Valid, 7687 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:41,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3630 Valid, 7687 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 687 Invalid, 3 Unknown, 0 Unchecked, 13.7s Time] [2022-11-03 03:48:41,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25463 states. [2022-11-03 03:48:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25463 to 25459. [2022-11-03 03:48:43,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25459 states, 14526 states have (on average 1.3268621781632934) internal successors, (19274), 15247 states have internal predecessors, (19274), 9485 states have call successors, (9485), 1450 states have call predecessors, (9485), 1447 states have return successors, (9519), 9220 states have call predecessors, (9519), 9480 states have call successors, (9519) [2022-11-03 03:48:43,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25459 states to 25459 states and 38278 transitions. [2022-11-03 03:48:43,347 INFO L78 Accepts]: Start accepts. Automaton has 25459 states and 38278 transitions. Word has length 42 [2022-11-03 03:48:43,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:43,347 INFO L495 AbstractCegarLoop]: Abstraction has 25459 states and 38278 transitions. [2022-11-03 03:48:43,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:48:43,348 INFO L276 IsEmpty]: Start isEmpty. Operand 25459 states and 38278 transitions. [2022-11-03 03:48:43,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-03 03:48:43,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:43,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:43,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:48:43,352 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:43,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash -341202423, now seen corresponding path program 1 times [2022-11-03 03:48:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:43,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784633234] [2022-11-03 03:48:43,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:43,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:48:43,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:43,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784633234] [2022-11-03 03:48:43,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784633234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:43,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:43,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:43,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141464037] [2022-11-03 03:48:43,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:43,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:43,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:43,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:43,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:43,802 INFO L87 Difference]: Start difference. First operand 25459 states and 38278 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:48:45,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:48,159 WARN L539 Checker$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 03:48:50,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:48:52,303 WARN L539 Checker$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 03:48:59,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:59,222 INFO L93 Difference]: Finished difference Result 29586 states and 44378 transitions. [2022-11-03 03:48:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:59,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2022-11-03 03:48:59,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:59,371 INFO L225 Difference]: With dead ends: 29586 [2022-11-03 03:48:59,372 INFO L226 Difference]: Without dead ends: 29544 [2022-11-03 03:48:59,393 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 03:48:59,394 INFO L413 NwaCegarLoop]: 4453 mSDtfsCounter, 3541 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 7768 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:59,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 7768 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 688 Invalid, 4 Unknown, 0 Unchecked, 13.8s Time] [2022-11-03 03:48:59,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29544 states. [2022-11-03 03:49:01,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29544 to 29493. [2022-11-03 03:49:01,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29493 states, 16847 states have (on average 1.3264082625986822) internal successors, (22346), 17674 states have internal predecessors, (22346), 10936 states have call successors, (10936), 1711 states have call predecessors, (10936), 1709 states have return successors, (10981), 10636 states have call predecessors, (10981), 10931 states have call successors, (10981) [2022-11-03 03:49:01,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29493 states to 29493 states and 44263 transitions. [2022-11-03 03:49:01,580 INFO L78 Accepts]: Start accepts. Automaton has 29493 states and 44263 transitions. Word has length 43 [2022-11-03 03:49:01,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:01,580 INFO L495 AbstractCegarLoop]: Abstraction has 29493 states and 44263 transitions. [2022-11-03 03:49:01,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:49:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand 29493 states and 44263 transitions. [2022-11-03 03:49:01,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-03 03:49:01,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:01,599 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:49:01,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:49:01,599 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1020510404, now seen corresponding path program 1 times [2022-11-03 03:49:01,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:01,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559969322] [2022-11-03 03:49:01,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:01,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:02,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:49:02,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:02,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559969322] [2022-11-03 03:49:02,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559969322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:02,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:02,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:02,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517669293] [2022-11-03 03:49:02,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:02,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:02,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:02,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:02,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:49:02,028 INFO L87 Difference]: Start difference. First operand 29493 states and 44263 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:49:04,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:05,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:08,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:49:10,271 WARN L539 Checker$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 03:49:14,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:18,670 WARN L539 Checker$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 03:49:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:23,940 INFO L93 Difference]: Finished difference Result 85851 states and 128997 transitions. [2022-11-03 03:49:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:49:23,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2022-11-03 03:49:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:24,436 INFO L225 Difference]: With dead ends: 85851 [2022-11-03 03:49:24,436 INFO L226 Difference]: Without dead ends: 56359 [2022-11-03 03:49:24,610 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 03:49:24,611 INFO L413 NwaCegarLoop]: 5879 mSDtfsCounter, 3541 mSDsluCounter, 3652 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3546 SdHoareTripleChecker+Valid, 9205 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:24,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3546 Valid, 9205 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 860 Invalid, 4 Unknown, 0 Unchecked, 18.4s Time] [2022-11-03 03:49:24,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56359 states. [2022-11-03 03:49:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56359 to 55325. [2022-11-03 03:49:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55325 states, 31405 states have (on average 1.326540359815316) internal successors, (41660), 32997 states have internal predecessors, (41660), 20820 states have call successors, (20820), 3103 states have call predecessors, (20820), 3099 states have return successors, (20934), 20235 states have call predecessors, (20934), 20815 states have call successors, (20934) [2022-11-03 03:49:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55325 states to 55325 states and 83414 transitions. [2022-11-03 03:49:29,338 INFO L78 Accepts]: Start accepts. Automaton has 55325 states and 83414 transitions. Word has length 58 [2022-11-03 03:49:29,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:29,338 INFO L495 AbstractCegarLoop]: Abstraction has 55325 states and 83414 transitions. [2022-11-03 03:49:29,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 03:49:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 55325 states and 83414 transitions. [2022-11-03 03:49:29,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 03:49:29,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:29,382 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:29,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:49:29,383 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:29,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:29,384 INFO L85 PathProgramCache]: Analyzing trace with hash 930593721, now seen corresponding path program 1 times [2022-11-03 03:49:29,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:29,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964359696] [2022-11-03 03:49:29,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:29,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:49:30,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:30,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964359696] [2022-11-03 03:49:30,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964359696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:30,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:30,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:49:30,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059954607] [2022-11-03 03:49:30,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:30,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:49:30,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:30,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:49:30,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:49:30,492 INFO L87 Difference]: Start difference. First operand 55325 states and 83414 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:49:32,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:36,741 WARN L539 Checker$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 03:49:38,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:41,706 WARN L539 Checker$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 03:49:43,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:46,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:53,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:54,824 WARN L539 Checker$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 03:50:02,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:50:04,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:04,575 INFO L93 Difference]: Finished difference Result 153400 states and 234288 transitions. [2022-11-03 03:50:04,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:50:04,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2022-11-03 03:50:04,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:05,608 INFO L225 Difference]: With dead ends: 153400 [2022-11-03 03:50:05,609 INFO L226 Difference]: Without dead ends: 99663 [2022-11-03 03:50:05,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 03:50:05,870 INFO L413 NwaCegarLoop]: 5436 mSDtfsCounter, 4139 mSDsluCounter, 9538 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 329 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4307 SdHoareTripleChecker+Valid, 14122 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:05,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4307 Valid, 14122 Invalid, 2469 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [329 Valid, 2135 Invalid, 5 Unknown, 0 Unchecked, 28.0s Time] [2022-11-03 03:50:05,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99663 states. [2022-11-03 03:50:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99663 to 92935. [2022-11-03 03:50:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92935 states, 54185 states have (on average 1.325071514256713) internal successors, (71799), 56839 states have internal predecessors, (71799), 33785 states have call successors, (33785), 4972 states have call predecessors, (33785), 4964 states have return successors, (33971), 32846 states have call predecessors, (33971), 33780 states have call successors, (33971) [2022-11-03 03:50:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92935 states to 92935 states and 139555 transitions. [2022-11-03 03:50:14,614 INFO L78 Accepts]: Start accepts. Automaton has 92935 states and 139555 transitions. Word has length 78 [2022-11-03 03:50:14,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:14,614 INFO L495 AbstractCegarLoop]: Abstraction has 92935 states and 139555 transitions. [2022-11-03 03:50:14,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:50:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 92935 states and 139555 transitions. [2022-11-03 03:50:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 03:50:14,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:14,665 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:14,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:50:14,666 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:14,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:14,666 INFO L85 PathProgramCache]: Analyzing trace with hash -119517202, now seen corresponding path program 1 times [2022-11-03 03:50:14,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:14,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948061534] [2022-11-03 03:50:14,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:14,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 03:50:15,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:15,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948061534] [2022-11-03 03:50:15,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948061534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:15,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:15,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:50:15,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816045225] [2022-11-03 03:50:15,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:15,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:50:15,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:15,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:50:15,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:50:15,721 INFO L87 Difference]: Start difference. First operand 92935 states and 139555 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, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:50:17,950 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 03:50:19,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:21,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:23,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:50:25,486 WARN L539 Checker$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 03:50:26,846 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 []