./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.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_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/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_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/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_f24d6068-4f81-4f5e-80dc-62827edd3d03/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 9be531e7af87cba73be4f8246e93f3d32963d00e421fc44d0f45559eac1d9e7a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:25:28,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:25:28,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:25:28,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:25:28,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:25:28,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:25:28,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:25:28,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:25:28,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:25:28,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:25:28,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:25:28,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:25:28,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:25:28,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:25:28,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:25:28,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:25:28,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:25:28,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:25:28,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:25:28,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:25:28,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:25:28,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:25:28,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:25:28,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:25:28,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:25:28,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:25:28,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:25:28,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:25:28,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:25:28,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:25:28,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:25:28,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:25:28,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:25:28,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:25:28,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:25:28,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:25:28,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:25:28,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:25:28,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:25:28,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:25:28,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:25:28,540 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:25:28,584 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:25:28,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:25:28,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:25:28,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:25:28,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:25:28,588 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:25:28,588 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:25:28,588 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:25:28,588 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:25:28,589 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:25:28,590 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:25:28,590 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:25:28,590 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:25:28,591 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:25:28,591 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:25:28,591 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:25:28,591 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:25:28,591 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:25:28,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:25:28,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:25:28,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:25:28,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:25:28,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:25:28,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:25:28,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:25:28,595 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:25:28,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:25:28,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:25:28,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:25:28,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:25:28,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:25:28,597 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:25:28,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:25:28,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:25:28,598 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:25:28,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:25:28,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:25:28,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:25:28,599 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_f24d6068-4f81-4f5e-80dc-62827edd3d03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9be531e7af87cba73be4f8246e93f3d32963d00e421fc44d0f45559eac1d9e7a [2022-11-03 02:25:28,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:25:28,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:25:28,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:25:28,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:25:28,903 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:25:28,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-03 02:25:28,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/data/c728b89fd/bbca08d7729a44fdb120c6d14fa3f6a6/FLAGf1db0e22e [2022-11-03 02:25:29,955 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:25:29,956 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-03 02:25:30,009 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/data/c728b89fd/bbca08d7729a44fdb120c6d14fa3f6a6/FLAGf1db0e22e [2022-11-03 02:25:30,346 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/data/c728b89fd/bbca08d7729a44fdb120c6d14fa3f6a6 [2022-11-03 02:25:30,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:25:30,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:25:30,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:25:30,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:25:30,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:25:30,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:25:30" (1/1) ... [2022-11-03 02:25:30,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13721141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:30, skipping insertion in model container [2022-11-03 02:25:30,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:25:30" (1/1) ... [2022-11-03 02:25:30,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:25:30,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:25:33,716 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_f24d6068-4f81-4f5e-80dc-62827edd3d03/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i[354644,354657] [2022-11-03 02:25:33,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:33,877 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:25:34,548 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_f24d6068-4f81-4f5e-80dc-62827edd3d03/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i[354644,354657] [2022-11-03 02:25:34,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:34,743 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:25:34,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:34 WrapperNode [2022-11-03 02:25:34,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:25:34,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:34,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:25:34,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:25:34,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:34" (1/1) ... [2022-11-03 02:25:34,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:34" (1/1) ... [2022-11-03 02:25:35,202 INFO L138 Inliner]: procedures = 371, calls = 4454, calls flagged for inlining = 165, calls inlined = 164, statements flattened = 10052 [2022-11-03 02:25:35,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:35,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:25:35,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:25:35,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:25:35,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:34" (1/1) ... [2022-11-03 02:25:35,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:34" (1/1) ... [2022-11-03 02:25:35,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:34" (1/1) ... [2022-11-03 02:25:35,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:34" (1/1) ... [2022-11-03 02:25:35,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:34" (1/1) ... [2022-11-03 02:25:35,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:34" (1/1) ... [2022-11-03 02:25:35,634 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:34" (1/1) ... [2022-11-03 02:25:35,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:34" (1/1) ... [2022-11-03 02:25:35,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:25:35,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:25:35,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:25:35,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:25:35,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:34" (1/1) ... [2022-11-03 02:25:35,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:25:35,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:35,771 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:25:35,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:25:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 02:25:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 02:25:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_open [2022-11-03 02:25:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_open [2022-11-03 02:25:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure put_qp_write [2022-11-03 02:25:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure put_qp_write [2022-11-03 02:25:35,907 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_close [2022-11-03 02:25:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_close [2022-11-03 02:25:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_qp [2022-11-03 02:25:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_qp [2022-11-03 02:25:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 02:25:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 02:25:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure fdget [2022-11-03 02:25:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure fdget [2022-11-03 02:25:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2022-11-03 02:25:35,909 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2022-11-03 02:25:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:25:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:25:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:25:35,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:25:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:25:35,909 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:25:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_cq [2022-11-03 02:25:35,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_cq [2022-11-03 02:25:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure show_ibdev [2022-11-03 02:25:35,910 INFO L138 BoogieDeclarations]: Found implementation of procedure show_ibdev [2022-11-03 02:25:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure ib_query_device [2022-11-03 02:25:35,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_query_device [2022-11-03 02:25:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure fd_install [2022-11-03 02:25:35,910 INFO L138 BoogieDeclarations]: Found implementation of procedure fd_install [2022-11-03 02:25:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_close [2022-11-03 02:25:35,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_close [2022-11-03 02:25:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure idr_destroy [2022-11-03 02:25:35,911 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_destroy [2022-11-03 02:25:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure ib_copy_to_udata [2022-11-03 02:25:35,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_copy_to_udata [2022-11-03 02:25:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 02:25:35,911 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 02:25:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure put_pd_read [2022-11-03 02:25:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pd_read [2022-11-03 02:25:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:25:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:25:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure idr_write_qp [2022-11-03 02:25:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_write_qp [2022-11-03 02:25:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-03 02:25:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-03 02:25:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_uobj [2022-11-03 02:25:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_uobj [2022-11-03 02:25:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_xrcd [2022-11-03 02:25:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_xrcd [2022-11-03 02:25:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_file [2022-11-03 02:25:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_file [2022-11-03 02:25:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:25:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:25:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:25:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:25:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:25:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:25:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub_and_test [2022-11-03 02:25:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub_and_test [2022-11-03 02:25:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_pd [2022-11-03 02:25:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_pd [2022-11-03 02:25:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_modify_srq [2022-11-03 02:25:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_modify_srq [2022-11-03 02:25:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-03 02:25:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-03 02:25:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure fdput [2022-11-03 02:25:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure fdput [2022-11-03 02:25:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:25:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:25:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_ucq [2022-11-03 02:25:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_ucq [2022-11-03 02:25:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:25:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:25:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:25:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:25:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:25:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:25:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_unmarshall_recv [2022-11-03 02:25:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_unmarshall_recv [2022-11-03 02:25:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure idr_add_uobj [2022-11-03 02:25:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_add_uobj [2022-11-03 02:25:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:25:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:25:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_ex_query_device [2022-11-03 02:25:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_ex_query_device [2022-11-03 02:25:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure idr_write_uobj [2022-11-03 02:25:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_write_uobj [2022-11-03 02:25:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure __init_rwsem [2022-11-03 02:25:35,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_rwsem [2022-11-03 02:25:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 02:25:35,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 02:25:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_mmap [2022-11-03 02:25:35,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_mmap [2022-11-03 02:25:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:25:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:25:35,919 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:25:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_poll [2022-11-03 02:25:35,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_poll [2022-11-03 02:25:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:25:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure __uverbs_create_xsrq [2022-11-03 02:25:35,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __uverbs_create_xsrq [2022-11-03 02:25:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_fasync [2022-11-03 02:25:35,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_fasync [2022-11-03 02:25:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure init_uobj [2022-11-03 02:25:35,920 INFO L138 BoogieDeclarations]: Found implementation of procedure init_uobj [2022-11-03 02:25:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure put_xrcd_read [2022-11-03 02:25:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure put_xrcd_read [2022-11-03 02:25:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure copy_query_dev_fields [2022-11-03 02:25:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_query_dev_fields [2022-11-03 02:25:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:25:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_alloc_event_file [2022-11-03 02:25:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_alloc_event_file [2022-11-03 02:25:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-03 02:25:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-03 02:25:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 02:25:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2022-11-03 02:25:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2022-11-03 02:25:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:25:35,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:25:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure put_uobj [2022-11-03 02:25:35,923 INFO L138 BoogieDeclarations]: Found implementation of procedure put_uobj [2022-11-03 02:25:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-03 02:25:35,923 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-03 02:25:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_event_read [2022-11-03 02:25:35,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_event_read [2022-11-03 02:25:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-03 02:25:35,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-03 02:25:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:25:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:25:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 02:25:35,924 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 02:25:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_obj [2022-11-03 02:25:35,925 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_obj [2022-11-03 02:25:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_qp [2022-11-03 02:25:35,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_qp [2022-11-03 02:25:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove_uobj [2022-11-03 02:25:35,925 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove_uobj [2022-11-03 02:25:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 02:25:35,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 02:25:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 02:25:35,926 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 02:25:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-11-03 02:25:35,926 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-11-03 02:25:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 02:25:35,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 02:25:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:25:35,927 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:25:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_ah [2022-11-03 02:25:35,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_ah [2022-11-03 02:25:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:25:35,927 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:25:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-03 02:25:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-03 02:25:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:25:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:25:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure put_uobj_read [2022-11-03 02:25:35,928 INFO L138 BoogieDeclarations]: Found implementation of procedure put_uobj_read [2022-11-03 02:25:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:25:35,929 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:25:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_srq [2022-11-03 02:25:35,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_srq [2022-11-03 02:25:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_write [2022-11-03 02:25:35,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_write [2022-11-03 02:25:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:25:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 02:25:35,930 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 02:25:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure xrcd_table_search [2022-11-03 02:25:35,930 INFO L138 BoogieDeclarations]: Found implementation of procedure xrcd_table_search [2022-11-03 02:25:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 02:25:35,930 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 02:25:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:25:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_mw [2022-11-03 02:25:35,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_mw [2022-11-03 02:25:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure __idr_get_uobj [2022-11-03 02:25:35,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __idr_get_uobj [2022-11-03 02:25:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure put_uobj_write [2022-11-03 02:25:35,931 INFO L138 BoogieDeclarations]: Found implementation of procedure put_uobj_write [2022-11-03 02:25:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-03 02:25:35,932 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-03 02:25:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:25:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure put_srq_read [2022-11-03 02:25:35,932 INFO L138 BoogieDeclarations]: Found implementation of procedure put_srq_read [2022-11-03 02:25:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:25:35,932 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:25:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dereg_mr [2022-11-03 02:25:35,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dereg_mr [2022-11-03 02:25:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure put_unused_fd [2022-11-03 02:25:35,933 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unused_fd [2022-11-03 02:25:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-03 02:25:35,933 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-03 02:25:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure create_cq [2022-11-03 02:25:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure create_cq [2022-11-03 02:25:35,934 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:25:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:25:35,934 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 02:25:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 02:25:35,934 INFO L130 BoogieDeclarations]: Found specification of procedure modify_qp_mask [2022-11-03 02:25:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure modify_qp_mask [2022-11-03 02:25:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-11-03 02:25:35,935 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-11-03 02:25:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:25:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 02:25:35,935 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 02:25:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-03 02:25:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-03 02:25:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_zero_bit [2022-11-03 02:25:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_zero_bit [2022-11-03 02:25:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-03 02:25:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-03 02:25:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 02:25:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 02:25:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:25:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:25:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 02:25:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 02:25:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:25:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:25:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:25:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure get_unused_fd_flags [2022-11-03 02:25:35,938 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unused_fd_flags [2022-11-03 02:25:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:25:35,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:25:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 02:25:35,938 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 02:25:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:25:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_xrcd [2022-11-03 02:25:35,939 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_xrcd [2022-11-03 02:25:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-03 02:25:35,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-03 02:25:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-03 02:25:35,939 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-03 02:25:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-03 02:25:35,940 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-03 02:25:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:25:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure ib_check_mr_access [2022-11-03 02:25:35,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_check_mr_access [2022-11-03 02:25:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-03 02:25:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-03 02:25:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:25:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:25:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:25:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2022-11-03 02:25:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2022-11-03 02:25:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 02:25:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 02:25:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_flow [2022-11-03 02:25:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_flow [2022-11-03 02:25:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:25:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:25:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get___0 [2022-11-03 02:25:35,943 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get___0 [2022-11-03 02:25:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure xrcd_table_delete [2022-11-03 02:25:35,943 INFO L138 BoogieDeclarations]: Found implementation of procedure xrcd_table_delete [2022-11-03 02:25:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_remove_one [2022-11-03 02:25:35,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_remove_one [2022-11-03 02:25:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 02:25:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 02:25:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure ib_detach_mcast [2022-11-03 02:25:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_detach_mcast [2022-11-03 02:25:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 02:25:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 02:25:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure show_dev_abi_version [2022-11-03 02:25:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure show_dev_abi_version [2022-11-03 02:25:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2022-11-03 02:25:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2022-11-03 02:25:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2022-11-03 02:25:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2022-11-03 02:25:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_cq [2022-11-03 02:25:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_cq [2022-11-03 02:25:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:25:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:25:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure idr_read_srq [2022-11-03 02:25:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_read_srq [2022-11-03 02:25:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-03 02:25:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-03 02:25:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_add_one [2022-11-03 02:25:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_add_one [2022-11-03 02:25:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure put_qp_read [2022-11-03 02:25:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure put_qp_read [2022-11-03 02:25:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:25:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:25:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2022-11-03 02:25:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2022-11-03 02:25:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:25:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:25:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2022-11-03 02:25:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2022-11-03 02:25:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure ib_copy_from_udata [2022-11-03 02:25:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_copy_from_udata [2022-11-03 02:25:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 02:25:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 02:25:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_uevent [2022-11-03 02:25:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_uevent [2022-11-03 02:25:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:25:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:25:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure put_cq_read [2022-11-03 02:25:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure put_cq_read [2022-11-03 02:25:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_modify_qp [2022-11-03 02:25:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_modify_qp [2022-11-03 02:25:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:25:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure show_class_attr_string [2022-11-03 02:25:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure show_class_attr_string [2022-11-03 02:25:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_pd [2022-11-03 02:25:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_pd [2022-11-03 02:25:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:25:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:25:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-03 02:25:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-03 02:25:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:25:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:25:37,357 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:25:37,361 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:25:37,922 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:26:05,334 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:26:07,625 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:26:07,626 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:26:07,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:26:07 BoogieIcfgContainer [2022-11-03 02:26:07,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:26:07,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:26:07,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:26:07,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:26:07,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:25:30" (1/3) ... [2022-11-03 02:26:07,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad7a468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:26:07, skipping insertion in model container [2022-11-03 02:26:07,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:34" (2/3) ... [2022-11-03 02:26:07,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad7a468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:26:07, skipping insertion in model container [2022-11-03 02:26:07,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:26:07" (3/3) ... [2022-11-03 02:26:07,652 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2022-11-03 02:26:07,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:26:07,674 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:26:07,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:26:07,808 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;@386cb3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:26:07,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:26:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 2536 states, 1517 states have (on average 1.3651944627554384) internal successors, (2071), 1593 states have internal predecessors, (2071), 872 states have call successors, (872), 146 states have call predecessors, (872), 145 states have return successors, (863), 857 states have call predecessors, (863), 863 states have call successors, (863) [2022-11-03 02:26:07,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-03 02:26:07,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:07,863 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:07,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:07,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:07,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1036924830, now seen corresponding path program 1 times [2022-11-03 02:26:07,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:07,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003857156] [2022-11-03 02:26:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:07,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:09,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2022-11-03 02:26:09,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:09,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003857156] [2022-11-03 02:26:09,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003857156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:09,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:09,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:09,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176125260] [2022-11-03 02:26:09,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:09,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:09,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:09,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:09,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:09,766 INFO L87 Difference]: Start difference. First operand has 2536 states, 1517 states have (on average 1.3651944627554384) internal successors, (2071), 1593 states have internal predecessors, (2071), 872 states have call successors, (872), 146 states have call predecessors, (872), 145 states have return successors, (863), 857 states have call predecessors, (863), 863 states have call successors, (863) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 02:26:11,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:15,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:17,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:20,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:23,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:23,537 INFO L93 Difference]: Finished difference Result 7466 states and 11588 transitions. [2022-11-03 02:26:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:23,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 324 [2022-11-03 02:26:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:23,591 INFO L225 Difference]: With dead ends: 7466 [2022-11-03 02:26:23,591 INFO L226 Difference]: Without dead ends: 4951 [2022-11-03 02:26:23,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:23,615 INFO L413 NwaCegarLoop]: 4344 mSDtfsCounter, 3699 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3701 SdHoareTripleChecker+Valid, 7785 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:23,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3701 Valid, 7785 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 575 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2022-11-03 02:26:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2022-11-03 02:26:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 4945. [2022-11-03 02:26:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4945 states, 2980 states have (on average 1.3624161073825503) internal successors, (4060), 3111 states have internal predecessors, (4060), 1679 states have call successors, (1679), 286 states have call predecessors, (1679), 285 states have return successors, (1694), 1663 states have call predecessors, (1694), 1677 states have call successors, (1694) [2022-11-03 02:26:24,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4945 states to 4945 states and 7433 transitions. [2022-11-03 02:26:24,023 INFO L78 Accepts]: Start accepts. Automaton has 4945 states and 7433 transitions. Word has length 324 [2022-11-03 02:26:24,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:24,029 INFO L495 AbstractCegarLoop]: Abstraction has 4945 states and 7433 transitions. [2022-11-03 02:26:24,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 02:26:24,030 INFO L276 IsEmpty]: Start isEmpty. Operand 4945 states and 7433 transitions. [2022-11-03 02:26:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-03 02:26:24,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:24,051 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 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] [2022-11-03 02:26:24,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:26:24,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:24,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:24,052 INFO L85 PathProgramCache]: Analyzing trace with hash -788189084, now seen corresponding path program 1 times [2022-11-03 02:26:24,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:24,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148441777] [2022-11-03 02:26:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:24,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-03 02:26:24,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:24,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148441777] [2022-11-03 02:26:24,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148441777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:24,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:24,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:24,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308764614] [2022-11-03 02:26:24,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:24,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:24,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:24,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:24,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:24,890 INFO L87 Difference]: Start difference. First operand 4945 states and 7433 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, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:26:28,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:30,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:33,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:37,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:38,505 INFO L93 Difference]: Finished difference Result 14609 states and 22676 transitions. [2022-11-03 02:26:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:38,506 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, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 347 [2022-11-03 02:26:38,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:38,595 INFO L225 Difference]: With dead ends: 14609 [2022-11-03 02:26:38,595 INFO L226 Difference]: Without dead ends: 9725 [2022-11-03 02:26:38,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:38,629 INFO L413 NwaCegarLoop]: 4487 mSDtfsCounter, 3877 mSDsluCounter, 3827 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3879 SdHoareTripleChecker+Valid, 8037 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:38,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3879 Valid, 8037 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 584 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2022-11-03 02:26:38,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9725 states. [2022-11-03 02:26:39,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9725 to 9694. [2022-11-03 02:26:39,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9694 states, 5845 states have (on average 1.3640718562874252) internal successors, (7973), 6106 states have internal predecessors, (7973), 3285 states have call successors, (3285), 564 states have call predecessors, (3285), 563 states have return successors, (4036), 3253 states have call predecessors, (4036), 3283 states have call successors, (4036) [2022-11-03 02:26:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9694 states to 9694 states and 15294 transitions. [2022-11-03 02:26:39,424 INFO L78 Accepts]: Start accepts. Automaton has 9694 states and 15294 transitions. Word has length 347 [2022-11-03 02:26:39,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:39,427 INFO L495 AbstractCegarLoop]: Abstraction has 9694 states and 15294 transitions. [2022-11-03 02:26:39,428 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, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:26:39,428 INFO L276 IsEmpty]: Start isEmpty. Operand 9694 states and 15294 transitions. [2022-11-03 02:26:39,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-11-03 02:26:39,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:39,439 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 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] [2022-11-03 02:26:39,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:26:39,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:39,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:39,450 INFO L85 PathProgramCache]: Analyzing trace with hash 4809966, now seen corresponding path program 1 times [2022-11-03 02:26:39,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:39,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282401417] [2022-11-03 02:26:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:39,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-03 02:26:40,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:40,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282401417] [2022-11-03 02:26:40,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282401417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:40,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:40,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:40,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825010265] [2022-11-03 02:26:40,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:40,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:40,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:40,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:40,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:40,232 INFO L87 Difference]: Start difference. First operand 9694 states and 15294 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:26:41,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:44,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:46,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:48,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:49,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:49,213 INFO L93 Difference]: Finished difference Result 19215 states and 30309 transitions. [2022-11-03 02:26:49,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:49,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 355 [2022-11-03 02:26:49,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:49,286 INFO L225 Difference]: With dead ends: 19215 [2022-11-03 02:26:49,287 INFO L226 Difference]: Without dead ends: 9582 [2022-11-03 02:26:49,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:49,345 INFO L413 NwaCegarLoop]: 3450 mSDtfsCounter, 3718 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3721 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:49,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3721 Valid, 3458 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-11-03 02:26:49,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9582 states. [2022-11-03 02:26:49,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9582 to 9579. [2022-11-03 02:26:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9579 states, 5757 states have (on average 1.3599096751780442) internal successors, (7829), 6018 states have internal predecessors, (7829), 3259 states have call successors, (3259), 563 states have call predecessors, (3259), 562 states have return successors, (4006), 3227 states have call predecessors, (4006), 3257 states have call successors, (4006) [2022-11-03 02:26:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9579 states to 9579 states and 15094 transitions. [2022-11-03 02:26:50,016 INFO L78 Accepts]: Start accepts. Automaton has 9579 states and 15094 transitions. Word has length 355 [2022-11-03 02:26:50,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:50,017 INFO L495 AbstractCegarLoop]: Abstraction has 9579 states and 15094 transitions. [2022-11-03 02:26:50,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:26:50,018 INFO L276 IsEmpty]: Start isEmpty. Operand 9579 states and 15094 transitions. [2022-11-03 02:26:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-11-03 02:26:50,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:50,027 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 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] [2022-11-03 02:26:50,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:26:50,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:50,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:50,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1509323567, now seen corresponding path program 1 times [2022-11-03 02:26:50,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:50,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627828810] [2022-11-03 02:26:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:50,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-03 02:26:50,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:50,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627828810] [2022-11-03 02:26:50,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627828810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:50,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:50,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:50,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602012897] [2022-11-03 02:26:50,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:50,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:50,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:50,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:50,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:50,643 INFO L87 Difference]: Start difference. First operand 9579 states and 15094 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:26:52,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:55,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:57,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:00,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:00,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:00,937 INFO L93 Difference]: Finished difference Result 18770 states and 29477 transitions. [2022-11-03 02:27:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:00,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 355 [2022-11-03 02:27:00,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:01,002 INFO L225 Difference]: With dead ends: 18770 [2022-11-03 02:27:01,002 INFO L226 Difference]: Without dead ends: 9252 [2022-11-03 02:27:01,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:01,048 INFO L413 NwaCegarLoop]: 3356 mSDtfsCounter, 3509 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3513 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:01,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3513 Valid, 3463 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 293 Invalid, 4 Unknown, 0 Unchecked, 9.9s Time] [2022-11-03 02:27:01,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9252 states. [2022-11-03 02:27:01,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9252 to 9234. [2022-11-03 02:27:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9234 states, 5535 states have (on average 1.355736224028907) internal successors, (7504), 5793 states have internal predecessors, (7504), 3138 states have call successors, (3138), 561 states have call predecessors, (3138), 560 states have return successors, (3800), 3105 states have call predecessors, (3800), 3136 states have call successors, (3800) [2022-11-03 02:27:01,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9234 states to 9234 states and 14442 transitions. [2022-11-03 02:27:01,780 INFO L78 Accepts]: Start accepts. Automaton has 9234 states and 14442 transitions. Word has length 355 [2022-11-03 02:27:01,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:01,782 INFO L495 AbstractCegarLoop]: Abstraction has 9234 states and 14442 transitions. [2022-11-03 02:27:01,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 02:27:01,782 INFO L276 IsEmpty]: Start isEmpty. Operand 9234 states and 14442 transitions. [2022-11-03 02:27:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-11-03 02:27:01,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:01,790 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 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] [2022-11-03 02:27:01,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:27:01,790 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:01,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:01,793 INFO L85 PathProgramCache]: Analyzing trace with hash -981435734, now seen corresponding path program 1 times [2022-11-03 02:27:01,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:01,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787663455] [2022-11-03 02:27:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:01,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-03 02:27:02,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:02,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787663455] [2022-11-03 02:27:02,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787663455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:02,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:02,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:02,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215043066] [2022-11-03 02:27:02,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:02,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:02,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:02,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:02,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:02,407 INFO L87 Difference]: Start difference. First operand 9234 states and 14442 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-03 02:27:04,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:08,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:10,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:13,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:15,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:18,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:18,140 INFO L93 Difference]: Finished difference Result 27478 states and 43017 transitions. [2022-11-03 02:27:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:18,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 369 [2022-11-03 02:27:18,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:18,267 INFO L225 Difference]: With dead ends: 27478 [2022-11-03 02:27:18,267 INFO L226 Difference]: Without dead ends: 18318 [2022-11-03 02:27:18,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:18,320 INFO L413 NwaCegarLoop]: 5879 mSDtfsCounter, 3494 mSDsluCounter, 3605 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3497 SdHoareTripleChecker+Valid, 9210 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:18,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3497 Valid, 9210 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 4 Unknown, 0 Unchecked, 14.9s Time] [2022-11-03 02:27:18,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18318 states. [2022-11-03 02:27:19,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18318 to 18298. [2022-11-03 02:27:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18298 states, 10974 states have (on average 1.3569345726262074) internal successors, (14891), 11491 states have internal predecessors, (14891), 6217 states have call successors, (6217), 1107 states have call predecessors, (6217), 1106 states have return successors, (7539), 6151 states have call predecessors, (7539), 6215 states have call successors, (7539) [2022-11-03 02:27:19,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18298 states to 18298 states and 28647 transitions. [2022-11-03 02:27:19,897 INFO L78 Accepts]: Start accepts. Automaton has 18298 states and 28647 transitions. Word has length 369 [2022-11-03 02:27:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:19,898 INFO L495 AbstractCegarLoop]: Abstraction has 18298 states and 28647 transitions. [2022-11-03 02:27:19,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-03 02:27:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 18298 states and 28647 transitions. [2022-11-03 02:27:19,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-11-03 02:27:19,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:19,910 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 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] [2022-11-03 02:27:19,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:27:19,910 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:19,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:19,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1397200463, now seen corresponding path program 1 times [2022-11-03 02:27:19,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:19,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033592340] [2022-11-03 02:27:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1917 trivial. 0 not checked. [2022-11-03 02:27:20,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:20,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033592340] [2022-11-03 02:27:20,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033592340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:20,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:20,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:20,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162112009] [2022-11-03 02:27:20,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:20,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:20,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:20,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:20,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:20,885 INFO L87 Difference]: Start difference. First operand 18298 states and 28647 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-03 02:27:22,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:27,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:29,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:32,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:34,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:37,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:37,317 INFO L93 Difference]: Finished difference Result 45630 states and 71467 transitions. [2022-11-03 02:27:37,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:37,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 398 [2022-11-03 02:27:37,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:37,507 INFO L225 Difference]: With dead ends: 45630 [2022-11-03 02:27:37,507 INFO L226 Difference]: Without dead ends: 27406 [2022-11-03 02:27:37,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:37,603 INFO L413 NwaCegarLoop]: 6352 mSDtfsCounter, 3502 mSDsluCounter, 3600 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3505 SdHoareTripleChecker+Valid, 9679 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:37,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3505 Valid, 9679 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 793 Invalid, 3 Unknown, 0 Unchecked, 15.3s Time] [2022-11-03 02:27:37,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27406 states. [2022-11-03 02:27:39,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27406 to 27386. [2022-11-03 02:27:39,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27386 states, 16437 states have (on average 1.3573036442173145) internal successors, (22310), 17213 states have internal predecessors, (22310), 9296 states have call successors, (9296), 1653 states have call predecessors, (9296), 1652 states have return successors, (11278), 9197 states have call predecessors, (11278), 9294 states have call successors, (11278) [2022-11-03 02:27:39,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27386 states to 27386 states and 42884 transitions. [2022-11-03 02:27:39,852 INFO L78 Accepts]: Start accepts. Automaton has 27386 states and 42884 transitions. Word has length 398 [2022-11-03 02:27:39,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:39,853 INFO L495 AbstractCegarLoop]: Abstraction has 27386 states and 42884 transitions. [2022-11-03 02:27:39,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-03 02:27:39,854 INFO L276 IsEmpty]: Start isEmpty. Operand 27386 states and 42884 transitions. [2022-11-03 02:27:39,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-03 02:27:39,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:39,864 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:27:39,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:27:39,864 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:39,865 INFO L85 PathProgramCache]: Analyzing trace with hash -803717793, now seen corresponding path program 1 times [2022-11-03 02:27:39,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:39,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932010691] [2022-11-03 02:27:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:39,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1940 trivial. 0 not checked. [2022-11-03 02:27:42,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:42,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932010691] [2022-11-03 02:27:42,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932010691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:42,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:42,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:27:42,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130175683] [2022-11-03 02:27:42,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:42,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:27:42,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:42,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:27:42,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:27:42,200 INFO L87 Difference]: Start difference. First operand 27386 states and 42884 transitions. Second operand has 7 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (47), 5 states have call predecessors, (47), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:27:43,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:52,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:54,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:58,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:04,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:04,311 INFO L93 Difference]: Finished difference Result 54680 states and 89296 transitions. [2022-11-03 02:28:04,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:28:04,312 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (47), 5 states have call predecessors, (47), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 414 [2022-11-03 02:28:04,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:04,538 INFO L225 Difference]: With dead ends: 54680 [2022-11-03 02:28:04,538 INFO L226 Difference]: Without dead ends: 27368 [2022-11-03 02:28:04,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:28:04,889 INFO L413 NwaCegarLoop]: 3333 mSDtfsCounter, 24 mSDsluCounter, 18001 mSDsCounter, 0 mSdLazyCounter, 1756 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 19969 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1756 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:04,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 19969 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1756 Invalid, 3 Unknown, 0 Unchecked, 20.8s Time] [2022-11-03 02:28:04,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27368 states. [2022-11-03 02:28:06,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27368 to 27320. [2022-11-03 02:28:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27320 states, 16437 states have (on average 1.3558435237573767) internal successors, (22286), 17207 states have internal predecessors, (22286), 9206 states have call successors, (9206), 1677 states have call predecessors, (9206), 1676 states have return successors, (11063), 9107 states have call predecessors, (11063), 9204 states have call successors, (11063) [2022-11-03 02:28:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27320 states to 27320 states and 42555 transitions. [2022-11-03 02:28:07,037 INFO L78 Accepts]: Start accepts. Automaton has 27320 states and 42555 transitions. Word has length 414 [2022-11-03 02:28:07,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:07,038 INFO L495 AbstractCegarLoop]: Abstraction has 27320 states and 42555 transitions. [2022-11-03 02:28:07,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (47), 5 states have call predecessors, (47), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:28:07,039 INFO L276 IsEmpty]: Start isEmpty. Operand 27320 states and 42555 transitions. [2022-11-03 02:28:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2022-11-03 02:28:07,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:07,049 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 3, 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] [2022-11-03 02:28:07,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:28:07,049 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:28:07,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:07,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1456545190, now seen corresponding path program 1 times [2022-11-03 02:28:07,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:07,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503053507] [2022-11-03 02:28:07,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:07,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2022-11-03 02:28:08,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:08,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503053507] [2022-11-03 02:28:08,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503053507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:08,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:08,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:28:08,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054516981] [2022-11-03 02:28:08,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:08,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:28:08,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:28:08,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:08,182 INFO L87 Difference]: Start difference. First operand 27320 states and 42555 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-03 02:28:12,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:15,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:19,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:22,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:22,353 INFO L93 Difference]: Finished difference Result 67685 states and 106566 transitions. [2022-11-03 02:28:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:28:22,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 481 [2022-11-03 02:28:22,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:22,592 INFO L225 Difference]: With dead ends: 67685 [2022-11-03 02:28:22,593 INFO L226 Difference]: Without dead ends: 40439 [2022-11-03 02:28:22,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:22,715 INFO L413 NwaCegarLoop]: 5326 mSDtfsCounter, 3456 mSDsluCounter, 3680 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3458 SdHoareTripleChecker+Valid, 8743 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:22,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3458 Valid, 8743 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 709 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2022-11-03 02:28:22,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40439 states. [2022-11-03 02:28:24,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40439 to 40293. [2022-11-03 02:28:24,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40293 states, 24311 states have (on average 1.3574102258237013) internal successors, (33000), 25450 states have internal predecessors, (33000), 13533 states have call successors, (13533), 2449 states have call predecessors, (13533), 2448 states have return successors, (17386), 13389 states have call predecessors, (17386), 13531 states have call successors, (17386) [2022-11-03 02:28:25,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40293 states to 40293 states and 63919 transitions. [2022-11-03 02:28:25,269 INFO L78 Accepts]: Start accepts. Automaton has 40293 states and 63919 transitions. Word has length 481 [2022-11-03 02:28:25,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:25,270 INFO L495 AbstractCegarLoop]: Abstraction has 40293 states and 63919 transitions. [2022-11-03 02:28:25,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-03 02:28:25,271 INFO L276 IsEmpty]: Start isEmpty. Operand 40293 states and 63919 transitions. [2022-11-03 02:28:25,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-03 02:28:25,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:25,283 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 3, 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] [2022-11-03 02:28:25,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:28:25,284 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:28:25,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:25,285 INFO L85 PathProgramCache]: Analyzing trace with hash 826907926, now seen corresponding path program 1 times [2022-11-03 02:28:25,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:25,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56621511] [2022-11-03 02:28:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:25,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2300 trivial. 0 not checked. [2022-11-03 02:28:29,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:29,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56621511] [2022-11-03 02:28:29,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56621511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:28:29,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836855770] [2022-11-03 02:28:29,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:29,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:28:29,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:28:29,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:28:29,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:28:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:32,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 5979 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:28:32,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2308 backedges. 519 proven. 0 refuted. 0 times theorem prover too weak. 1789 trivial. 0 not checked. [2022-11-03 02:28:32,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:28:32,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836855770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:32,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:28:32,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-03 02:28:32,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666086203] [2022-11-03 02:28:32,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:32,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:28:32,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:32,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:28:32,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:28:32,328 INFO L87 Difference]: Start difference. First operand 40293 states and 63919 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 02:28:35,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:37,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:43,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:47,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:52,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:59,491 INFO L93 Difference]: Finished difference Result 120588 states and 191467 transitions. [2022-11-03 02:28:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:28:59,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 484 [2022-11-03 02:28:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:00,235 INFO L225 Difference]: With dead ends: 120588 [2022-11-03 02:29:00,236 INFO L226 Difference]: Without dead ends: 80252 [2022-11-03 02:29:00,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:29:00,381 INFO L413 NwaCegarLoop]: 6578 mSDtfsCounter, 3523 mSDsluCounter, 17827 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3529 SdHoareTripleChecker+Valid, 23058 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:00,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3529 Valid, 23058 Invalid, 1937 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1923 Invalid, 5 Unknown, 0 Unchecked, 23.5s Time] [2022-11-03 02:29:00,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80252 states. [2022-11-03 02:29:03,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80252 to 66750. [2022-11-03 02:29:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66750 states, 40307 states have (on average 1.3576053787183369) internal successors, (54721), 42161 states have internal predecessors, (54721), 22439 states have call successors, (22439), 4004 states have call predecessors, (22439), 4003 states have return successors, (28894), 22185 states have call predecessors, (28894), 22437 states have call successors, (28894) [2022-11-03 02:29:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66750 states to 66750 states and 106054 transitions. [2022-11-03 02:29:04,554 INFO L78 Accepts]: Start accepts. Automaton has 66750 states and 106054 transitions. Word has length 484 [2022-11-03 02:29:04,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:04,555 INFO L495 AbstractCegarLoop]: Abstraction has 66750 states and 106054 transitions. [2022-11-03 02:29:04,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 02:29:04,555 INFO L276 IsEmpty]: Start isEmpty. Operand 66750 states and 106054 transitions. [2022-11-03 02:29:04,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-11-03 02:29:04,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:04,566 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 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] [2022-11-03 02:29:04,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:29:04,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:04,794 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:04,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:04,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1360189847, now seen corresponding path program 1 times [2022-11-03 02:29:04,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:04,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688808538] [2022-11-03 02:29:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:04,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2022-11-03 02:29:09,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:09,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688808538] [2022-11-03 02:29:09,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688808538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:29:09,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691701122] [2022-11-03 02:29:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:09,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:09,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:09,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:09,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:29:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:11,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 6150 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:29:11,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 12 proven. 370 refuted. 0 times theorem prover too weak. 1940 trivial. 0 not checked. [2022-11-03 02:29:15,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:29:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2322 trivial. 0 not checked. [2022-11-03 02:29:18,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691701122] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:29:18,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:29:18,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 12] total 25 [2022-11-03 02:29:18,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829472986] [2022-11-03 02:29:18,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:18,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:29:18,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:18,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:29:18,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:29:18,200 INFO L87 Difference]: Start difference. First operand 66750 states and 106054 transitions. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (60), 5 states have call predecessors, (60), 2 states have return successors, (57), 5 states have call predecessors, (57), 4 states have call successors, (57) [2022-11-03 02:29:20,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:27,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:34,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:59,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:00,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:07,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:10,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:12,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:14,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:15,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:31,870 INFO L93 Difference]: Finished difference Result 135685 states and 221873 transitions. [2022-11-03 02:30:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:30:31,871 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (60), 5 states have call predecessors, (60), 2 states have return successors, (57), 5 states have call predecessors, (57), 4 states have call successors, (57) Word has length 500 [2022-11-03 02:30:31,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:32,700 INFO L225 Difference]: With dead ends: 135685 [2022-11-03 02:30:32,701 INFO L226 Difference]: Without dead ends: 135682 [2022-11-03 02:30:32,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1013 GetRequests, 981 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:30:32,754 INFO L413 NwaCegarLoop]: 6732 mSDtfsCounter, 17256 mSDsluCounter, 9409 mSDsCounter, 0 mSdLazyCounter, 12909 mSolverCounterSat, 11066 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17883 SdHoareTripleChecker+Valid, 15201 SdHoareTripleChecker+Invalid, 23980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11066 IncrementalHoareTripleChecker+Valid, 12909 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:32,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17883 Valid, 15201 Invalid, 23980 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11066 Valid, 12909 Invalid, 5 Unknown, 0 Unchecked, 66.4s Time] [2022-11-03 02:30:32,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135682 states. [2022-11-03 02:30:41,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135682 to 133813. [2022-11-03 02:30:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133813 states, 80802 states have (on average 1.357454023415262) internal successors, (109685), 84504 states have internal predecessors, (109685), 44930 states have call successors, (44930), 8006 states have call predecessors, (44930), 8080 states have return successors, (64081), 44503 states have call predecessors, (64081), 44928 states have call successors, (64081) [2022-11-03 02:30:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133813 states to 133813 states and 218696 transitions. [2022-11-03 02:30:42,371 INFO L78 Accepts]: Start accepts. Automaton has 133813 states and 218696 transitions. Word has length 500 [2022-11-03 02:30:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:42,373 INFO L495 AbstractCegarLoop]: Abstraction has 133813 states and 218696 transitions. [2022-11-03 02:30:42,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (60), 5 states have call predecessors, (60), 2 states have return successors, (57), 5 states have call predecessors, (57), 4 states have call successors, (57) [2022-11-03 02:30:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 133813 states and 218696 transitions. [2022-11-03 02:30:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-03 02:30:42,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:42,389 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 4, 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] [2022-11-03 02:30:42,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:30:42,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24d6068-4f81-4f5e-80dc-62827edd3d03/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:42,615 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:42,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:42,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1117542933, now seen corresponding path program 1 times [2022-11-03 02:30:42,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:42,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232857354] [2022-11-03 02:30:42,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:42,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2319 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2309 trivial. 0 not checked. [2022-11-03 02:30:46,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:46,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232857354] [2022-11-03 02:30:46,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232857354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:46,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:46,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:30:46,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006970213] [2022-11-03 02:30:46,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:46,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:30:46,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:46,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:30:46,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:30:46,757 INFO L87 Difference]: Start difference. First operand 133813 states and 218696 transitions. Second operand has 9 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 2 states have call successors, (63), 2 states have call predecessors, (63), 5 states have return successors, (56), 5 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-03 02:30:48,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:56,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:58,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:04,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:16,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:31:16,364 INFO L93 Difference]: Finished difference Result 268152 states and 463623 transitions. [2022-11-03 02:31:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:31:16,365 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 20.428571428571427) internal successors, (143), 6 states have internal predecessors, (143), 2 states have call successors, (63), 2 states have call predecessors, (63), 5 states have return successors, (56), 5 states have call predecessors, (56), 2 states have call successors, (56) Word has length 511 [2022-11-03 02:31:16,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:31:17,166 INFO L225 Difference]: With dead ends: 268152 [2022-11-03 02:31:17,166 INFO L226 Difference]: Without dead ends: 134413 [2022-11-03 02:31:18,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:31:18,278 INFO L413 NwaCegarLoop]: 3359 mSDtfsCounter, 2 mSDsluCounter, 25350 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26817 SdHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:31:18,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 26817 Invalid, 2257 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2253 Invalid, 4 Unknown, 0 Unchecked, 21.1s Time] [2022-11-03 02:31:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134413 states.