./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/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_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/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_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/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 aaab35a91d1712a4db1ee4982d280cf380b8393a76dde8325418650d577af40c --- 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 03:48:14,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:48:14,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:48:14,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:48:14,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:48:14,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:48:14,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:48:14,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:48:14,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:48:14,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:48:14,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:48:14,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:48:14,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:48:14,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:48:14,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:48:14,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:48:14,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:48:14,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:48:14,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:48:14,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:48:14,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:48:14,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:48:14,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:48:14,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:48:14,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:48:14,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:48:14,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:48:14,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:48:14,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:48:14,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:48:14,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:48:14,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:48:14,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:48:14,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:48:14,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:48:14,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:48:14,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:48:14,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:48:14,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:48:14,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:48:14,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:48:14,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:48:14,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:48:14,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:48:14,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:48:14,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:48:14,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:48:14,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:48:14,445 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:48:14,445 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:48:14,445 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:48:14,446 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:48:14,447 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:48:14,447 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:48:14,447 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:48:14,447 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:48:14,448 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:48:14,448 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:48:14,448 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:48:14,448 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:48:14,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:48:14,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:48:14,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:48:14,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:48:14,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:48:14,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:48:14,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:48:14,452 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:48:14,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:48:14,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:48:14,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:48:14,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:48:14,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:48:14,454 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:48:14,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:48:14,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:48:14,454 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:48:14,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:48:14,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:48:14,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:48:14,455 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_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaab35a91d1712a4db1ee4982d280cf380b8393a76dde8325418650d577af40c [2022-11-03 03:48:14,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:48:14,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:48:14,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:48:14,789 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:48:14,790 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:48:14,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i [2022-11-03 03:48:14,867 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/data/5979d9653/739815dc83904dd4ad3b920c5e097c2b/FLAG0c5b12c70 [2022-11-03 03:48:15,795 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:48:15,796 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i [2022-11-03 03:48:15,844 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/data/5979d9653/739815dc83904dd4ad3b920c5e097c2b/FLAG0c5b12c70 [2022-11-03 03:48:16,305 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/data/5979d9653/739815dc83904dd4ad3b920c5e097c2b [2022-11-03 03:48:16,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:48:16,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:48:16,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:48:16,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:48:16,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:48:16,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:16" (1/1) ... [2022-11-03 03:48:16,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b0f7a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:16, skipping insertion in model container [2022-11-03 03:48:16,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:48:16" (1/1) ... [2022-11-03 03:48:16,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:48:16,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:48:17,564 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_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i[168234,168247] [2022-11-03 03:48:18,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:48:18,522 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:48:18,724 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_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i[168234,168247] [2022-11-03 03:48:18,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:48:19,047 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:48:19,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:19 WrapperNode [2022-11-03 03:48:19,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:48:19,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:48:19,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:48:19,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:48:19,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:19" (1/1) ... [2022-11-03 03:48:19,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:19" (1/1) ... [2022-11-03 03:48:19,299 INFO L138 Inliner]: procedures = 246, calls = 1442, calls flagged for inlining = 122, calls inlined = 104, statements flattened = 2697 [2022-11-03 03:48:19,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:48:19,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:48:19,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:48:19,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:48:19,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:19" (1/1) ... [2022-11-03 03:48:19,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:19" (1/1) ... [2022-11-03 03:48:19,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:19" (1/1) ... [2022-11-03 03:48:19,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:19" (1/1) ... [2022-11-03 03:48:19,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:19" (1/1) ... [2022-11-03 03:48:19,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:19" (1/1) ... [2022-11-03 03:48:19,532 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:19" (1/1) ... [2022-11-03 03:48:19,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:19" (1/1) ... [2022-11-03 03:48:19,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:48:19,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:48:19,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:48:19,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:48:19,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:19" (1/1) ... [2022-11-03 03:48:19,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:48:19,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:48:19,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:48:19,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:48:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 03:48:19,671 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 03:48:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 03:48:19,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 03:48:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:48:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:48:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:48:19,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:48:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:48:19,672 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:48:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:48:19,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:48:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_write16 [2022-11-03 03:48:19,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_write16 [2022-11-03 03:48:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-03 03:48:19,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-03 03:48:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_select_bank [2022-11-03 03:48:19,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_select_bank [2022-11-03 03:48:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_tx_timeout [2022-11-03 03:48:19,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_tx_timeout [2022-11-03 03:48:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:48:19,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:48:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:48:19,673 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:48:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-03 03:48:19,674 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-03 03:48:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:48:19,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:48:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:48:19,674 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:48:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-03 03:48:19,674 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-03 03:48:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure dma_release_channel [2022-11-03 03:48:19,675 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_release_channel [2022-11-03 03:48:19,675 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:48:19,675 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:48:19,675 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-03 03:48:19,675 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-03 03:48:19,675 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_read16 [2022-11-03 03:48:19,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_read16 [2022-11-03 03:48:19,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:48:19,675 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~dma_cookie_t~0 [2022-11-03 03:48:19,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~dma_cookie_t~0 [2022-11-03 03:48:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:48:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure dmaengine_prep_slave_sg [2022-11-03 03:48:19,676 INFO L138 BoogieDeclarations]: Found implementation of procedure dmaengine_prep_slave_sg [2022-11-03 03:48:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-03 03:48:19,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-03 03:48:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 03:48:19,676 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 03:48:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 03:48:19,677 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 03:48:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure __ks8842_start_new_rx_dma [2022-11-03 03:48:19,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __ks8842_start_new_rx_dma [2022-11-03 03:48:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:48:19,677 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:48:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-03 03:48:19,677 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-03 03:48:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2022-11-03 03:48:19,678 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2022-11-03 03:48:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:48:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 03:48:19,678 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 03:48:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:48:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_tx_fifo_space [2022-11-03 03:48:19,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_tx_fifo_space [2022-11-03 03:48:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2022-11-03 03:48:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2022-11-03 03:48:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-03 03:48:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-03 03:48:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 03:48:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 03:48:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:48:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:48:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:48:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:48:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:48:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 03:48:19,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 03:48:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:48:19,680 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:48:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:48:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_reset_hw [2022-11-03 03:48:19,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_reset_hw [2022-11-03 03:48:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:48:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:48:19,681 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:48:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:48:19,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:48:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure __dma_request_channel [2022-11-03 03:48:19,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __dma_request_channel [2022-11-03 03:48:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_update_link_status [2022-11-03 03:48:19,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_update_link_status [2022-11-03 03:48:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:48:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:48:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-03 03:48:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-03 03:48:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_write8 [2022-11-03 03:48:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_write8 [2022-11-03 03:48:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_set_mac [2022-11-03 03:48:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_set_mac [2022-11-03 03:48:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_stop_dma [2022-11-03 03:48:19,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_stop_dma [2022-11-03 03:48:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-03 03:48:19,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-03 03:48:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_write_mac_addr [2022-11-03 03:48:19,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_write_mac_addr [2022-11-03 03:48:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:48:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:48:19,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:48:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:48:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_dealloc_dma_bufs [2022-11-03 03:48:19,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_dealloc_dma_bufs [2022-11-03 03:48:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_enable_rx [2022-11-03 03:48:19,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_enable_rx [2022-11-03 03:48:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-03 03:48:19,684 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-03 03:48:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:48:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 03:48:19,684 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 03:48:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:48:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 03:48:19,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 03:48:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-03 03:48:19,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-03 03:48:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-03 03:48:19,685 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-03 03:48:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_enable_tx [2022-11-03 03:48:19,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_enable_tx [2022-11-03 03:48:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure __dma_cap_set [2022-11-03 03:48:19,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __dma_cap_set [2022-11-03 03:48:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_resume_dma [2022-11-03 03:48:19,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_resume_dma [2022-11-03 03:48:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:48:19,686 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:48:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_enable_bits [2022-11-03 03:48:19,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_enable_bits [2022-11-03 03:48:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:48:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2022-11-03 03:48:19,687 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2022-11-03 03:48:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:48:19,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:48:20,307 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:48:20,312 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:48:20,669 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:48:22,825 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:48:23,355 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:48:23,356 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-03 03:48:23,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:23 BoogieIcfgContainer [2022-11-03 03:48:23,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:48:23,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:48:23,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:48:23,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:48:23,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:48:16" (1/3) ... [2022-11-03 03:48:23,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d998450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:23, skipping insertion in model container [2022-11-03 03:48:23,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:48:19" (2/3) ... [2022-11-03 03:48:23,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d998450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:48:23, skipping insertion in model container [2022-11-03 03:48:23,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:48:23" (3/3) ... [2022-11-03 03:48:23,375 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i [2022-11-03 03:48:23,401 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:48:23,401 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:48:23,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:48:23,474 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;@164a2af0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:48:23,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:48:23,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 704 states, 420 states have (on average 1.3047619047619048) internal successors, (548), 440 states have internal predecessors, (548), 220 states have call successors, (220), 63 states have call predecessors, (220), 62 states have return successors, (213), 210 states have call predecessors, (213), 213 states have call successors, (213) [2022-11-03 03:48:23,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 03:48:23,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:23,492 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:23,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:23,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1061627106, now seen corresponding path program 1 times [2022-11-03 03:48:23,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:23,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82495170] [2022-11-03 03:48:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:23,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:48:24,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:24,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82495170] [2022-11-03 03:48:24,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82495170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:24,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:24,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:48:24,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307400233] [2022-11-03 03:48:24,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:24,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:48:24,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:24,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:48:24,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:48:24,562 INFO L87 Difference]: Start difference. First operand has 704 states, 420 states have (on average 1.3047619047619048) internal successors, (548), 440 states have internal predecessors, (548), 220 states have call successors, (220), 63 states have call predecessors, (220), 62 states have return successors, (213), 210 states have call predecessors, (213), 213 states have call successors, (213) Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 03:48:29,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:29,335 INFO L93 Difference]: Finished difference Result 2775 states and 3907 transitions. [2022-11-03 03:48:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:48:29,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 30 [2022-11-03 03:48:29,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:29,388 INFO L225 Difference]: With dead ends: 2775 [2022-11-03 03:48:29,388 INFO L226 Difference]: Without dead ends: 2043 [2022-11-03 03:48:29,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:48:29,410 INFO L413 NwaCegarLoop]: 1067 mSDtfsCounter, 2225 mSDsluCounter, 3096 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 3673 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:29,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2327 Valid, 3673 Invalid, 2832 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [452 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 03:48:29,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2022-11-03 03:48:29,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2040. [2022-11-03 03:48:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 1227 states have (on average 1.2689486552567237) internal successors, (1557), 1260 states have internal predecessors, (1557), 629 states have call successors, (629), 184 states have call predecessors, (629), 183 states have return successors, (628), 619 states have call predecessors, (628), 628 states have call successors, (628) [2022-11-03 03:48:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2814 transitions. [2022-11-03 03:48:29,675 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2814 transitions. Word has length 30 [2022-11-03 03:48:29,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:29,676 INFO L495 AbstractCegarLoop]: Abstraction has 2040 states and 2814 transitions. [2022-11-03 03:48:29,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 03:48:29,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2814 transitions. [2022-11-03 03:48:29,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 03:48:29,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:29,688 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 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 03:48:29,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:48:29,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:29,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:29,689 INFO L85 PathProgramCache]: Analyzing trace with hash 61683489, now seen corresponding path program 1 times [2022-11-03 03:48:29,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:29,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208980849] [2022-11-03 03:48:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:29,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:48:30,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:30,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208980849] [2022-11-03 03:48:30,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208980849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:30,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:30,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:48:30,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75167073] [2022-11-03 03:48:30,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:30,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:48:30,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:30,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:48:30,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:48:30,099 INFO L87 Difference]: Start difference. First operand 2040 states and 2814 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:48:31,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:31,049 INFO L93 Difference]: Finished difference Result 4073 states and 5654 transitions. [2022-11-03 03:48:31,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:48:31,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2022-11-03 03:48:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:31,074 INFO L225 Difference]: With dead ends: 4073 [2022-11-03 03:48:31,074 INFO L226 Difference]: Without dead ends: 4068 [2022-11-03 03:48:31,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:48:31,078 INFO L413 NwaCegarLoop]: 1057 mSDtfsCounter, 934 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:31,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 2953 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:48:31,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2022-11-03 03:48:31,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 4056. [2022-11-03 03:48:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 2435 states have (on average 1.268993839835729) internal successors, (3090), 2501 states have internal predecessors, (3090), 1254 states have call successors, (1254), 367 states have call predecessors, (1254), 366 states have return successors, (1289), 1235 states have call predecessors, (1289), 1253 states have call successors, (1289) [2022-11-03 03:48:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 5633 transitions. [2022-11-03 03:48:31,367 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 5633 transitions. Word has length 38 [2022-11-03 03:48:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:31,367 INFO L495 AbstractCegarLoop]: Abstraction has 4056 states and 5633 transitions. [2022-11-03 03:48:31,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:48:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 5633 transitions. [2022-11-03 03:48:31,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-03 03:48:31,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:31,382 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:31,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:48:31,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:31,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:31,383 INFO L85 PathProgramCache]: Analyzing trace with hash 104368848, now seen corresponding path program 1 times [2022-11-03 03:48:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:31,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477747487] [2022-11-03 03:48:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:31,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:48:31,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:31,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477747487] [2022-11-03 03:48:31,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477747487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:31,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:31,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:31,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572724691] [2022-11-03 03:48:31,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:31,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:31,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:31,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:31,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:31,661 INFO L87 Difference]: Start difference. First operand 4056 states and 5633 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 03:48:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:32,520 INFO L93 Difference]: Finished difference Result 9406 states and 12985 transitions. [2022-11-03 03:48:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:32,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 108 [2022-11-03 03:48:32,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:32,554 INFO L225 Difference]: With dead ends: 9406 [2022-11-03 03:48:32,554 INFO L226 Difference]: Without dead ends: 5357 [2022-11-03 03:48:32,571 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 03:48:32,573 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 316 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:32,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1680 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:48:32,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2022-11-03 03:48:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 5316. [2022-11-03 03:48:32,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 3237 states have (on average 1.2767995057151684) internal successors, (4133), 3333 states have internal predecessors, (4133), 1571 states have call successors, (1571), 508 states have call predecessors, (1571), 507 states have return successors, (1606), 1522 states have call predecessors, (1606), 1570 states have call successors, (1606) [2022-11-03 03:48:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 7310 transitions. [2022-11-03 03:48:32,969 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 7310 transitions. Word has length 108 [2022-11-03 03:48:32,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:32,970 INFO L495 AbstractCegarLoop]: Abstraction has 5316 states and 7310 transitions. [2022-11-03 03:48:32,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 03:48:32,971 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 7310 transitions. [2022-11-03 03:48:32,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-03 03:48:32,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:32,987 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:32,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:48:32,988 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:32,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:32,988 INFO L85 PathProgramCache]: Analyzing trace with hash 746597846, now seen corresponding path program 1 times [2022-11-03 03:48:32,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:32,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465838674] [2022-11-03 03:48:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:32,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-03 03:48:33,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:33,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465838674] [2022-11-03 03:48:33,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465838674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:33,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:33,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:33,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745500558] [2022-11-03 03:48:33,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:33,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:33,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:33,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:33,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:33,323 INFO L87 Difference]: Start difference. First operand 5316 states and 7310 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:48:34,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:34,210 INFO L93 Difference]: Finished difference Result 11633 states and 15958 transitions. [2022-11-03 03:48:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:34,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 198 [2022-11-03 03:48:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:34,252 INFO L225 Difference]: With dead ends: 11633 [2022-11-03 03:48:34,252 INFO L226 Difference]: Without dead ends: 6330 [2022-11-03 03:48:34,275 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 03:48:34,276 INFO L413 NwaCegarLoop]: 1350 mSDtfsCounter, 778 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:34,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 2178 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:48:34,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6330 states. [2022-11-03 03:48:34,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6330 to 6228. [2022-11-03 03:48:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6228 states, 3804 states have (on average 1.2778654048370137) internal successors, (4861), 3912 states have internal predecessors, (4861), 1809 states have call successors, (1809), 615 states have call predecessors, (1809), 614 states have return successors, (1856), 1764 states have call predecessors, (1856), 1808 states have call successors, (1856) [2022-11-03 03:48:34,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 8526 transitions. [2022-11-03 03:48:34,722 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 8526 transitions. Word has length 198 [2022-11-03 03:48:34,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:34,722 INFO L495 AbstractCegarLoop]: Abstraction has 6228 states and 8526 transitions. [2022-11-03 03:48:34,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:48:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 8526 transitions. [2022-11-03 03:48:34,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-03 03:48:34,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:34,738 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:34,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:48:34,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:34,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:34,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1179188349, now seen corresponding path program 1 times [2022-11-03 03:48:34,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:34,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532138423] [2022-11-03 03:48:34,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:34,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-03 03:48:35,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:35,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532138423] [2022-11-03 03:48:35,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532138423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:35,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:35,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:35,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520006942] [2022-11-03 03:48:35,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:35,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:35,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:35,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:35,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:35,329 INFO L87 Difference]: Start difference. First operand 6228 states and 8526 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-03 03:48:36,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:36,487 INFO L93 Difference]: Finished difference Result 14271 states and 19537 transitions. [2022-11-03 03:48:36,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:36,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 205 [2022-11-03 03:48:36,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:36,557 INFO L225 Difference]: With dead ends: 14271 [2022-11-03 03:48:36,557 INFO L226 Difference]: Without dead ends: 8155 [2022-11-03 03:48:36,584 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 03:48:36,586 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 396 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:36,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1895 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:48:36,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8155 states. [2022-11-03 03:48:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8155 to 8090. [2022-11-03 03:48:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8090 states, 5030 states have (on average 1.2811133200795228) internal successors, (6444), 5166 states have internal predecessors, (6444), 2245 states have call successors, (2245), 815 states have call predecessors, (2245), 814 states have return successors, (2292), 2180 states have call predecessors, (2292), 2244 states have call successors, (2292) [2022-11-03 03:48:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 10981 transitions. [2022-11-03 03:48:37,133 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 10981 transitions. Word has length 205 [2022-11-03 03:48:37,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:37,136 INFO L495 AbstractCegarLoop]: Abstraction has 8090 states and 10981 transitions. [2022-11-03 03:48:37,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-03 03:48:37,138 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 10981 transitions. [2022-11-03 03:48:37,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-03 03:48:37,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:37,164 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:37,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:48:37,166 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:37,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:37,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1901191876, now seen corresponding path program 1 times [2022-11-03 03:48:37,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:37,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666875035] [2022-11-03 03:48:37,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:37,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:37,516 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 03:48:37,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:37,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666875035] [2022-11-03 03:48:37,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666875035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:37,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:37,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:37,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663263893] [2022-11-03 03:48:37,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:37,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:37,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:37,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:37,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:37,518 INFO L87 Difference]: Start difference. First operand 8090 states and 10981 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:48:38,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:38,534 INFO L93 Difference]: Finished difference Result 12154 states and 16568 transitions. [2022-11-03 03:48:38,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:38,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 215 [2022-11-03 03:48:38,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:38,579 INFO L225 Difference]: With dead ends: 12154 [2022-11-03 03:48:38,580 INFO L226 Difference]: Without dead ends: 8106 [2022-11-03 03:48:38,601 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 03:48:38,602 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 4 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:38,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1672 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:48:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8106 states. [2022-11-03 03:48:39,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8106 to 8106. [2022-11-03 03:48:39,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8106 states, 5042 states have (on average 1.2804442681475605) internal successors, (6456), 5182 states have internal predecessors, (6456), 2245 states have call successors, (2245), 815 states have call predecessors, (2245), 818 states have return successors, (2296), 2180 states have call predecessors, (2296), 2244 states have call successors, (2296) [2022-11-03 03:48:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8106 states to 8106 states and 10997 transitions. [2022-11-03 03:48:39,117 INFO L78 Accepts]: Start accepts. Automaton has 8106 states and 10997 transitions. Word has length 215 [2022-11-03 03:48:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:39,120 INFO L495 AbstractCegarLoop]: Abstraction has 8106 states and 10997 transitions. [2022-11-03 03:48:39,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:48:39,121 INFO L276 IsEmpty]: Start isEmpty. Operand 8106 states and 10997 transitions. [2022-11-03 03:48:39,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-03 03:48:39,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:39,147 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:39,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:48:39,148 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:39,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:39,149 INFO L85 PathProgramCache]: Analyzing trace with hash -486993915, now seen corresponding path program 1 times [2022-11-03 03:48:39,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:39,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821111974] [2022-11-03 03:48:39,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:39,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 03:48:40,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:40,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821111974] [2022-11-03 03:48:40,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821111974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:40,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:40,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:48:40,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994672621] [2022-11-03 03:48:40,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:40,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:48:40,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:40,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:48:40,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:48:40,692 INFO L87 Difference]: Start difference. First operand 8106 states and 10997 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 5 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2022-11-03 03:48:46,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:46,073 INFO L93 Difference]: Finished difference Result 16512 states and 22464 transitions. [2022-11-03 03:48:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:48:46,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 5 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) Word has length 216 [2022-11-03 03:48:46,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:46,121 INFO L225 Difference]: With dead ends: 16512 [2022-11-03 03:48:46,122 INFO L226 Difference]: Without dead ends: 8518 [2022-11-03 03:48:46,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:48:46,154 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 1427 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 2957 mSolverCounterSat, 906 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 3863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 906 IncrementalHoareTripleChecker+Valid, 2957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:46,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1624 Valid, 2142 Invalid, 3863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [906 Valid, 2957 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 03:48:46,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8518 states. [2022-11-03 03:48:46,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8518 to 8382. [2022-11-03 03:48:46,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8382 states, 5214 states have (on average 1.275795934023782) internal successors, (6652), 5358 states have internal predecessors, (6652), 2309 states have call successors, (2309), 839 states have call predecessors, (2309), 858 states have return successors, (2352), 2256 states have call predecessors, (2352), 2308 states have call successors, (2352) [2022-11-03 03:48:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8382 states to 8382 states and 11313 transitions. [2022-11-03 03:48:46,697 INFO L78 Accepts]: Start accepts. Automaton has 8382 states and 11313 transitions. Word has length 216 [2022-11-03 03:48:46,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:46,697 INFO L495 AbstractCegarLoop]: Abstraction has 8382 states and 11313 transitions. [2022-11-03 03:48:46,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 5 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2022-11-03 03:48:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 8382 states and 11313 transitions. [2022-11-03 03:48:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-11-03 03:48:46,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:46,739 INFO L195 NwaCegarLoop]: trace histogram [30, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 9, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:46,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:48:46,740 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:46,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1637367360, now seen corresponding path program 1 times [2022-11-03 03:48:46,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:46,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456511962] [2022-11-03 03:48:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:46,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1824 trivial. 0 not checked. [2022-11-03 03:48:48,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:48,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456511962] [2022-11-03 03:48:48,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456511962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:48,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:48,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:48:48,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524936781] [2022-11-03 03:48:48,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:48,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:48:48,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:48,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:48:48,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:48:48,522 INFO L87 Difference]: Start difference. First operand 8382 states and 11313 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (70), 2 states have call predecessors, (70), 3 states have return successors, (69), 3 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 03:48:49,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:49,639 INFO L93 Difference]: Finished difference Result 16722 states and 22596 transitions. [2022-11-03 03:48:49,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:48:49,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (70), 2 states have call predecessors, (70), 3 states have return successors, (69), 3 states have call predecessors, (69), 2 states have call successors, (69) Word has length 568 [2022-11-03 03:48:49,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:49,688 INFO L225 Difference]: With dead ends: 16722 [2022-11-03 03:48:49,689 INFO L226 Difference]: Without dead ends: 8452 [2022-11-03 03:48:49,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:48:49,725 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 2 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3341 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:49,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3341 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:48:49,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8452 states. [2022-11-03 03:48:50,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8452 to 8414. [2022-11-03 03:48:50,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8414 states, 5238 states have (on average 1.274532264222986) internal successors, (6676), 5382 states have internal predecessors, (6676), 2309 states have call successors, (2309), 839 states have call predecessors, (2309), 866 states have return successors, (2360), 2264 states have call predecessors, (2360), 2308 states have call successors, (2360) [2022-11-03 03:48:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8414 states to 8414 states and 11345 transitions. [2022-11-03 03:48:50,281 INFO L78 Accepts]: Start accepts. Automaton has 8414 states and 11345 transitions. Word has length 568 [2022-11-03 03:48:50,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:50,282 INFO L495 AbstractCegarLoop]: Abstraction has 8414 states and 11345 transitions. [2022-11-03 03:48:50,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (70), 2 states have call predecessors, (70), 3 states have return successors, (69), 3 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 03:48:50,282 INFO L276 IsEmpty]: Start isEmpty. Operand 8414 states and 11345 transitions. [2022-11-03 03:48:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2022-11-03 03:48:50,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:50,326 INFO L195 NwaCegarLoop]: trace histogram [30, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 9, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:50,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:48:50,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1375983151, now seen corresponding path program 1 times [2022-11-03 03:48:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:50,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964701657] [2022-11-03 03:48:50,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:50,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 1819 trivial. 0 not checked. [2022-11-03 03:48:54,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:54,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964701657] [2022-11-03 03:48:54,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964701657] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:48:54,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856900770] [2022-11-03 03:48:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:54,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:54,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:48:54,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:48:54,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:48:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:56,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 5392 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:48:56,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:56,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 1670 trivial. 0 not checked. [2022-11-03 03:48:56,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:56,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856900770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:56,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:48:56,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-03 03:48:56,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871454503] [2022-11-03 03:48:56,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:56,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:48:56,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:56,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:48:56,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:48:56,221 INFO L87 Difference]: Start difference. First operand 8414 states and 11345 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2022-11-03 03:48:58,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:58,120 INFO L93 Difference]: Finished difference Result 19872 states and 27527 transitions. [2022-11-03 03:48:58,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:48:58,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 572 [2022-11-03 03:48:58,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:58,179 INFO L225 Difference]: With dead ends: 19872 [2022-11-03 03:48:58,179 INFO L226 Difference]: Without dead ends: 11570 [2022-11-03 03:48:58,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:48:58,217 INFO L413 NwaCegarLoop]: 1221 mSDtfsCounter, 508 mSDsluCounter, 3434 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:58,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 4279 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 03:48:58,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11570 states. [2022-11-03 03:48:58,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11570 to 8454. [2022-11-03 03:48:58,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8454 states, 5270 states have (on average 1.272865275142315) internal successors, (6708), 5414 states have internal predecessors, (6708), 2317 states have call successors, (2317), 839 states have call predecessors, (2317), 866 states have return successors, (2368), 2272 states have call predecessors, (2368), 2316 states have call successors, (2368) [2022-11-03 03:48:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8454 states to 8454 states and 11393 transitions. [2022-11-03 03:48:58,982 INFO L78 Accepts]: Start accepts. Automaton has 8454 states and 11393 transitions. Word has length 572 [2022-11-03 03:48:58,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:58,983 INFO L495 AbstractCegarLoop]: Abstraction has 8454 states and 11393 transitions. [2022-11-03 03:48:58,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2022-11-03 03:48:58,983 INFO L276 IsEmpty]: Start isEmpty. Operand 8454 states and 11393 transitions. [2022-11-03 03:48:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2022-11-03 03:48:59,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:59,038 INFO L195 NwaCegarLoop]: trace histogram [30, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 9, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:59,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:59,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:59,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:59,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:59,254 INFO L85 PathProgramCache]: Analyzing trace with hash -595127960, now seen corresponding path program 1 times [2022-11-03 03:48:59,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:59,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355182602] [2022-11-03 03:48:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:59,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1868 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 1839 trivial. 0 not checked. [2022-11-03 03:49:02,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:02,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355182602] [2022-11-03 03:49:02,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355182602] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:49:02,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256554761] [2022-11-03 03:49:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:02,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:49:02,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:49:02,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:49:02,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:49:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:04,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 5459 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:49:04,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:04,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1868 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 1690 trivial. 0 not checked. [2022-11-03 03:49:04,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:04,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256554761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:04,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:49:04,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-03 03:49:04,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064493271] [2022-11-03 03:49:04,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:04,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:49:04,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:04,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:49:04,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:49:04,317 INFO L87 Difference]: Start difference. First operand 8454 states and 11393 transitions. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 3 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2022-11-03 03:49:06,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:06,355 INFO L93 Difference]: Finished difference Result 19952 states and 27623 transitions. [2022-11-03 03:49:06,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:49:06,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 3 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) Word has length 579 [2022-11-03 03:49:06,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:06,424 INFO L225 Difference]: With dead ends: 19952 [2022-11-03 03:49:06,424 INFO L226 Difference]: Without dead ends: 11610 [2022-11-03 03:49:06,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:49:06,459 INFO L413 NwaCegarLoop]: 1223 mSDtfsCounter, 508 mSDsluCounter, 3437 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 4284 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:06,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 4284 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 03:49:06,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11610 states. [2022-11-03 03:49:07,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11610 to 8454. [2022-11-03 03:49:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8454 states, 5270 states have (on average 1.272865275142315) internal successors, (6708), 5414 states have internal predecessors, (6708), 2317 states have call successors, (2317), 839 states have call predecessors, (2317), 866 states have return successors, (2368), 2272 states have call predecessors, (2368), 2316 states have call successors, (2368) [2022-11-03 03:49:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8454 states to 8454 states and 11393 transitions. [2022-11-03 03:49:07,459 INFO L78 Accepts]: Start accepts. Automaton has 8454 states and 11393 transitions. Word has length 579 [2022-11-03 03:49:07,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:07,460 INFO L495 AbstractCegarLoop]: Abstraction has 8454 states and 11393 transitions. [2022-11-03 03:49:07,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 3 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2022-11-03 03:49:07,461 INFO L276 IsEmpty]: Start isEmpty. Operand 8454 states and 11393 transitions. [2022-11-03 03:49:07,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-11-03 03:49:07,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:07,496 INFO L195 NwaCegarLoop]: trace histogram [30, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:07,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:07,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 03:49:07,725 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:07,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:07,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1520396801, now seen corresponding path program 1 times [2022-11-03 03:49:07,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:07,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810035514] [2022-11-03 03:49:07,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:07,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1916 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 1887 trivial. 0 not checked. [2022-11-03 03:49:11,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:11,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810035514] [2022-11-03 03:49:11,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810035514] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:49:11,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382005986] [2022-11-03 03:49:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:11,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:49:11,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:49:11,125 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:49:11,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:49:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:12,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 5625 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:49:12,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1916 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2022-11-03 03:49:12,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:12,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382005986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:12,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:49:12,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-11-03 03:49:12,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092495216] [2022-11-03 03:49:12,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:12,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:49:12,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:12,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:49:12,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:49:12,703 INFO L87 Difference]: Start difference. First operand 8454 states and 11393 transitions. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (81), 2 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-03 03:49:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:13,806 INFO L93 Difference]: Finished difference Result 17024 states and 22988 transitions. [2022-11-03 03:49:13,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:49:13,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (81), 2 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 2 states have call successors, (80) Word has length 600 [2022-11-03 03:49:13,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:13,849 INFO L225 Difference]: With dead ends: 17024 [2022-11-03 03:49:13,849 INFO L226 Difference]: Without dead ends: 8682 [2022-11-03 03:49:13,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:49:13,876 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 11 mSDsluCounter, 3829 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4232 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:13,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 4232 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:49:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2022-11-03 03:49:14,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 8610. [2022-11-03 03:49:14,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8610 states, 5382 states have (on average 1.2716462281679672) internal successors, (6844), 5538 states have internal predecessors, (6844), 2349 states have call successors, (2349), 839 states have call predecessors, (2349), 878 states have return successors, (2424), 2312 states have call predecessors, (2424), 2348 states have call successors, (2424) [2022-11-03 03:49:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8610 states to 8610 states and 11617 transitions. [2022-11-03 03:49:14,554 INFO L78 Accepts]: Start accepts. Automaton has 8610 states and 11617 transitions. Word has length 600 [2022-11-03 03:49:14,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:14,556 INFO L495 AbstractCegarLoop]: Abstraction has 8610 states and 11617 transitions. [2022-11-03 03:49:14,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (81), 2 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-03 03:49:14,556 INFO L276 IsEmpty]: Start isEmpty. Operand 8610 states and 11617 transitions. [2022-11-03 03:49:14,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2022-11-03 03:49:14,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:14,584 INFO L195 NwaCegarLoop]: trace histogram [30, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:14,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:14,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:49:14,813 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:14,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:14,814 INFO L85 PathProgramCache]: Analyzing trace with hash 125491634, now seen corresponding path program 1 times [2022-11-03 03:49:14,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:14,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335613481] [2022-11-03 03:49:14,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:14,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2011 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 1982 trivial. 0 not checked. [2022-11-03 03:49:17,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:17,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335613481] [2022-11-03 03:49:17,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335613481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:49:17,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042342275] [2022-11-03 03:49:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:17,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:49:17,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:49:17,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:49:17,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a5d1e4-f1a0-488d-9933-cee3ca1735a8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:49:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:19,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 5991 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 03:49:19,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2011 backedges. 255 proven. 16 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-11-03 03:49:20,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:49:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2011 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 1981 trivial. 0 not checked. [2022-11-03 03:49:22,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042342275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:49:22,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1494566965] [2022-11-03 03:49:22,419 INFO L159 IcfgInterpreter]: Started Sifa with 298 locations of interest [2022-11-03 03:49:22,419 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:49:22,425 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:49:22,431 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:49:22,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:50:03,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1145 treesize of output 905 [2022-11-03 03:50:04,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1145 treesize of output 905 [2022-11-03 03:50:07,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:50:07,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-03 03:50:07,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:50:10,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 171 select indices, 171 select index equivalence classes, 346 disjoint index pairs (out of 14535 index pairs), introduced 171 new quantified variables, introduced 0 case distinctions, treesize of input 1202 treesize of output 514 [2022-11-03 03:50:15,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 171 select indices, 171 select index equivalence classes, 346 disjoint index pairs (out of 14535 index pairs), introduced 171 new quantified variables, introduced 0 case distinctions, treesize of input 1202 treesize of output 514 [2022-11-03 03:50:24,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 03:50:24,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 03:50:24,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 03:50:31,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 03:50:31,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 03:50:31,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3