./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-43_2a-drivers--net--ethernet--intel--ixgb--ixgb.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_f936b102-cdb5-415c-9f17-c6ecf9a10188/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f936b102-cdb5-415c-9f17-c6ecf9a10188/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_f936b102-cdb5-415c-9f17-c6ecf9a10188/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f936b102-cdb5-415c-9f17-c6ecf9a10188/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f936b102-cdb5-415c-9f17-c6ecf9a10188/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_f936b102-cdb5-415c-9f17-c6ecf9a10188/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 899936809f134b7a18a7ac00d293808544b0e96b14603dc5a591cd3e9a61d6b6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:45:01,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:45:01,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:45:01,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:45:01,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:45:01,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:45:01,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:45:01,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:45:01,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:45:01,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:45:01,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:45:01,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:45:01,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:45:01,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:45:01,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:45:01,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:45:01,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:45:01,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:45:01,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:45:01,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:45:01,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:45:01,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:45:01,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:45:01,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:45:01,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:45:01,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:45:01,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:45:01,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:45:01,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:45:01,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:45:01,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:45:01,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:45:01,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:45:01,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:45:01,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:45:01,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:45:01,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:45:01,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:45:01,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:45:01,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:45:01,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:45:01,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f936b102-cdb5-415c-9f17-c6ecf9a10188/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:45:01,637 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:45:01,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:45:01,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:45:01,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:45:01,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:45:01,645 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:45:01,645 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:45:01,645 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:45:01,646 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:45:01,646 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:45:01,648 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:45:01,648 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:45:01,648 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:45:01,649 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:45:01,649 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:45:01,650 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:45:01,650 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:45:01,650 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:45:01,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:45:01,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:45:01,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:45:01,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:45:01,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:45:01,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:45:01,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:45:01,656 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:45:01,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:45:01,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:45:01,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:45:01,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:45:01,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:45:01,659 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:45:01,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:45:01,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:45:01,660 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:45:01,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:45:01,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:45:01,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:45:01,661 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_f936b102-cdb5-415c-9f17-c6ecf9a10188/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f936b102-cdb5-415c-9f17-c6ecf9a10188/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 899936809f134b7a18a7ac00d293808544b0e96b14603dc5a591cd3e9a61d6b6 [2022-11-03 03:45:02,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:45:02,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:45:02,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:45:02,096 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:45:02,097 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:45:02,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f936b102-cdb5-415c-9f17-c6ecf9a10188/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i [2022-11-03 03:45:02,176 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f936b102-cdb5-415c-9f17-c6ecf9a10188/bin/utaipan-7li7fVZpFI/data/c4b323a0f/e201014c782b4ec290e215eed585f24f/FLAG46da4d203 [2022-11-03 03:45:03,395 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:45:03,395 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f936b102-cdb5-415c-9f17-c6ecf9a10188/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i [2022-11-03 03:45:03,474 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f936b102-cdb5-415c-9f17-c6ecf9a10188/bin/utaipan-7li7fVZpFI/data/c4b323a0f/e201014c782b4ec290e215eed585f24f/FLAG46da4d203 [2022-11-03 03:45:03,558 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f936b102-cdb5-415c-9f17-c6ecf9a10188/bin/utaipan-7li7fVZpFI/data/c4b323a0f/e201014c782b4ec290e215eed585f24f [2022-11-03 03:45:03,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:45:03,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:45:03,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:45:03,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:45:03,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:45:03,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:03" (1/1) ... [2022-11-03 03:45:03,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e46cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:03, skipping insertion in model container [2022-11-03 03:45:03,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:03" (1/1) ... [2022-11-03 03:45:03,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:45:03,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:45:08,274 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_f936b102-cdb5-415c-9f17-c6ecf9a10188/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i[478203,478216] [2022-11-03 03:45:08,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:45:08,487 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:45:09,215 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_f936b102-cdb5-415c-9f17-c6ecf9a10188/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i[478203,478216] [2022-11-03 03:45:09,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:45:09,664 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:45:09,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09 WrapperNode [2022-11-03 03:45:09,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:45:09,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:45:09,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:45:09,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:45:09,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2022-11-03 03:45:09,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2022-11-03 03:45:10,370 INFO L138 Inliner]: procedures = 450, calls = 6036, calls flagged for inlining = 203, calls inlined = 184, statements flattened = 11262 [2022-11-03 03:45:10,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:45:10,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:45:10,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:45:10,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:45:10,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2022-11-03 03:45:10,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2022-11-03 03:45:10,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2022-11-03 03:45:10,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2022-11-03 03:45:10,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2022-11-03 03:45:10,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2022-11-03 03:45:10,928 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2022-11-03 03:45:10,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2022-11-03 03:45:11,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:45:11,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:45:11,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:45:11,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:45:11,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (1/1) ... [2022-11-03 03:45:11,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:45:11,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f936b102-cdb5-415c-9f17-c6ecf9a10188/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:11,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f936b102-cdb5-415c-9f17-c6ecf9a10188/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:45:11,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f936b102-cdb5-415c-9f17-c6ecf9a10188/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:45:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:45:11,241 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:45:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:45:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:45:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:45:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:45:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_vfta [2022-11-03 03:45:11,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_vfta [2022-11-03 03:45:11,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:45:11,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:45:11,243 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_standby_eeprom [2022-11-03 03:45:11,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_standby_eeprom [2022-11-03 03:45:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_io_error_detected [2022-11-03 03:45:11,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_io_error_detected [2022-11-03 03:45:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 03:45:11,244 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 03:45:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2022-11-03 03:45:11,245 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2022-11-03 03:45:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:45:11,245 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:45:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 03:45:11,245 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 03:45:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 03:45:11,246 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 03:45:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_tx_timeout_task [2022-11-03 03:45:11,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_tx_timeout_task [2022-11-03 03:45:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_alloc_rx_buffers [2022-11-03 03:45:11,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_alloc_rx_buffers [2022-11-03 03:45:11,247 INFO L130 BoogieDeclarations]: Found specification of procedure mac_addr_valid [2022-11-03 03:45:11,247 INFO L138 BoogieDeclarations]: Found implementation of procedure mac_addr_valid [2022-11-03 03:45:11,247 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_vlan_rx_add_vid [2022-11-03 03:45:11,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_vlan_rx_add_vid [2022-11-03 03:45:11,248 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_free_tx_resources [2022-11-03 03:45:11,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_free_tx_resources [2022-11-03 03:45:11,248 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 03:45:11,248 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 03:45:11,248 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_features [2022-11-03 03:45:11,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_features [2022-11-03 03:45:11,249 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_multi [2022-11-03 03:45:11,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_multi [2022-11-03 03:45:11,249 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_rar_set [2022-11-03 03:45:11,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_rar_set [2022-11-03 03:45:11,250 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 03:45:11,250 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 03:45:11,250 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 03:45:11,250 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 03:45:11,250 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 03:45:11,251 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 03:45:11,251 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 03:45:11,251 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 03:45:11,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:45:11,251 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 03:45:11,252 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 03:45:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_validate_eeprom_checksum [2022-11-03 03:45:11,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_validate_eeprom_checksum [2022-11-03 03:45:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:45:11,252 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:45:11,253 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_netpoll [2022-11-03 03:45:11,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_netpoll [2022-11-03 03:45:11,253 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:45:11,253 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:45:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:45:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_raise_clock [2022-11-03 03:45:11,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_raise_clock [2022-11-03 03:45:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_eeprom [2022-11-03 03:45:11,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_eeprom [2022-11-03 03:45:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:45:11,255 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:45:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_identify_xpak_vendor [2022-11-03 03:45:11,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_identify_xpak_vendor [2022-11-03 03:45:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:45:11,256 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_mac_reset [2022-11-03 03:45:11,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_mac_reset [2022-11-03 03:45:11,256 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_3 [2022-11-03 03:45:11,256 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_3 [2022-11-03 03:45:11,256 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_read_eeprom [2022-11-03 03:45:11,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_read_eeprom [2022-11-03 03:45:11,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:45:11,257 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_free_rx_resources [2022-11-03 03:45:11,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_free_rx_resources [2022-11-03 03:45:11,257 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:45:11,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:45:11,258 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-11-03 03:45:11,258 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-11-03 03:45:11,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:45:11,258 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:45:11,259 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-03 03:45:11,259 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-03 03:45:11,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 03:45:11,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 03:45:11,259 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_regs_len [2022-11-03 03:45:11,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_regs_len [2022-11-03 03:45:11,260 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-03 03:45:11,260 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-03 03:45:11,260 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 03:45:11,260 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 03:45:11,261 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_read_phy_reg [2022-11-03 03:45:11,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_read_phy_reg [2022-11-03 03:45:11,261 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_check_for_link [2022-11-03 03:45:11,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_check_for_link [2022-11-03 03:45:11,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 03:45:11,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 03:45:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_validate_option [2022-11-03 03:45:11,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_validate_option [2022-11-03 03:45:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:45:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-03 03:45:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-03 03:45:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:45:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 03:45:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 03:45:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:45:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:45:11,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:45:11,264 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2022-11-03 03:45:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2022-11-03 03:45:11,264 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_lower_clock [2022-11-03 03:45:11,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_lower_clock [2022-11-03 03:45:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_reset [2022-11-03 03:45:11,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_reset [2022-11-03 03:45:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 03:45:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 03:45:11,266 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_eeprom_len [2022-11-03 03:45:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_eeprom_len [2022-11-03 03:45:11,266 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_up [2022-11-03 03:45:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_up [2022-11-03 03:45:11,267 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_irq_enable [2022-11-03 03:45:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_irq_enable [2022-11-03 03:45:11,267 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-03 03:45:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-03 03:45:11,267 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:45:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:45:11,268 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_tx_resources [2022-11-03 03:45:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_tx_resources [2022-11-03 03:45:11,268 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_maybe_stop_tx [2022-11-03 03:45:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_maybe_stop_tx [2022-11-03 03:45:11,269 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_intr [2022-11-03 03:45:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_intr [2022-11-03 03:45:11,269 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 03:45:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 03:45:11,269 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:45:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:45:11,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:45:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:45:11,270 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-03 03:45:11,271 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-03 03:45:11,271 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 03:45:11,271 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 03:45:11,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:45:11,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:45:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:45:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:45:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 03:45:11,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 03:45:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 03:45:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 03:45:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 03:45:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 03:45:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_update_stats [2022-11-03 03:45:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_update_stats [2022-11-03 03:45:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_7 [2022-11-03 03:45:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_7 [2022-11-03 03:45:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:45:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:45:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_check_and_get_eeprom_data [2022-11-03 03:45:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_check_and_get_eeprom_data [2022-11-03 03:45:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-03 03:45:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-03 03:45:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:45:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:45:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:45:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:45:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:45:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:45:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-03 03:45:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-03 03:45:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-03 03:45:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-03 03:45:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-03 03:45:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-03 03:45:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:45:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-03 03:45:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-03 03:45:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 03:45:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 03:45:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:45:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_vlan_rx_kill_vid [2022-11-03 03:45:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_vlan_rx_kill_vid [2022-11-03 03:45:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-03 03:45:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-03 03:45:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:45:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_change_mtu [2022-11-03 03:45:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_change_mtu [2022-11-03 03:45:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 03:45:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 03:45:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-03 03:45:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-03 03:45:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:45:11,281 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:45:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 03:45:11,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 03:45:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_link_reset [2022-11-03 03:45:11,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_link_reset [2022-11-03 03:45:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_speed_duplex [2022-11-03 03:45:11,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_speed_duplex [2022-11-03 03:45:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_fix_features [2022-11-03 03:45:11,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_fix_features [2022-11-03 03:45:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 03:45:11,282 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 03:45:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2022-11-03 03:45:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2022-11-03 03:45:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:45:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:45:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_io_slot_reset [2022-11-03 03:45:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_io_slot_reset [2022-11-03 03:45:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2022-11-03 03:45:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2022-11-03 03:45:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 03:45:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 03:45:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_unmap_and_free_tx_resource [2022-11-03 03:45:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_unmap_and_free_tx_resource [2022-11-03 03:45:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-03 03:45:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-03 03:45:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:45:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:45:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_mac [2022-11-03 03:45:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_mac [2022-11-03 03:45:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:45:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_eeprom [2022-11-03 03:45:11,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_eeprom [2022-11-03 03:45:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:45:11,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:45:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_phy_reg [2022-11-03 03:45:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_phy_reg [2022-11-03 03:45:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_ee_mac_addr [2022-11-03 03:45:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_ee_mac_addr [2022-11-03 03:45:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 03:45:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 03:45:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 03:45:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 03:45:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-03 03:45:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-03 03:45:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_clean_tx_ring [2022-11-03 03:45:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_clean_tx_ring [2022-11-03 03:45:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure is_multicast_ether_addr [2022-11-03 03:45:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure is_multicast_ether_addr [2022-11-03 03:45:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-03 03:45:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-03 03:45:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_clean_rx_ring [2022-11-03 03:45:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_clean_rx_ring [2022-11-03 03:45:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_shift_out_bits [2022-11-03 03:45:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_shift_out_bits [2022-11-03 03:45:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_down [2022-11-03 03:45:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_down [2022-11-03 03:45:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 03:45:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 03:45:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_tx_timeout [2022-11-03 03:45:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_tx_timeout [2022-11-03 03:45:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_rx_resources [2022-11-03 03:45:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_rx_resources [2022-11-03 03:45:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 03:45:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 03:45:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 03:45:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 03:45:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_stats [2022-11-03 03:45:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_stats [2022-11-03 03:45:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-03 03:45:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-03 03:45:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 03:45:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 03:45:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:45:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 03:45:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_eeprom_data [2022-11-03 03:45:11,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_eeprom_data [2022-11-03 03:45:12,830 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:45:12,835 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:45:13,325 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:45:46,486 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:45:49,670 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:45:49,671 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:45:49,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:49 BoogieIcfgContainer [2022-11-03 03:45:49,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:45:49,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:45:49,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:45:49,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:45:49,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:45:03" (1/3) ... [2022-11-03 03:45:49,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51438558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:49, skipping insertion in model container [2022-11-03 03:45:49,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:09" (2/3) ... [2022-11-03 03:45:49,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51438558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:49, skipping insertion in model container [2022-11-03 03:45:49,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:49" (3/3) ... [2022-11-03 03:45:49,695 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i [2022-11-03 03:45:49,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:45:49,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:45:50,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:45:50,054 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;@15b8a6f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:45:50,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:45:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 2477 states, 1477 states have (on average 1.2721733243060258) internal successors, (1879), 1510 states have internal predecessors, (1879), 871 states have call successors, (871), 128 states have call predecessors, (871), 127 states have return successors, (862), 858 states have call predecessors, (862), 862 states have call successors, (862) [2022-11-03 03:45:50,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-03 03:45:50,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:50,118 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:50,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:50,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:50,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1153997544, now seen corresponding path program 1 times [2022-11-03 03:45:50,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:50,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949366786] [2022-11-03 03:45:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:50,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-03 03:45:51,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:51,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949366786] [2022-11-03 03:45:51,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949366786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:51,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:51,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:51,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12710360] [2022-11-03 03:45:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:51,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:45:51,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:51,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:45:51,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:45:51,938 INFO L87 Difference]: Start difference. First operand has 2477 states, 1477 states have (on average 1.2721733243060258) internal successors, (1879), 1510 states have internal predecessors, (1879), 871 states have call successors, (871), 128 states have call predecessors, (871), 127 states have return successors, (862), 858 states have call predecessors, (862), 862 states have call successors, (862) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:45:53,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:45:58,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:02,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:06,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:08,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:09,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:09,110 INFO L93 Difference]: Finished difference Result 6923 states and 10131 transitions. [2022-11-03 03:46:09,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:09,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2022-11-03 03:46:09,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:09,201 INFO L225 Difference]: With dead ends: 6923 [2022-11-03 03:46:09,201 INFO L226 Difference]: Without dead ends: 4410 [2022-11-03 03:46:09,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:09,241 INFO L413 NwaCegarLoop]: 4221 mSDtfsCounter, 2908 mSDsluCounter, 3449 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 7342 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:09,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2908 Valid, 7342 Invalid, 815 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 807 Invalid, 1 Unknown, 0 Unchecked, 16.7s Time] [2022-11-03 03:46:09,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4410 states. [2022-11-03 03:46:09,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4410 to 4399. [2022-11-03 03:46:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 2600 states have (on average 1.2434615384615384) internal successors, (3233), 2639 states have internal predecessors, (3233), 1565 states have call successors, (1565), 234 states have call predecessors, (1565), 233 states have return successors, (1563), 1552 states have call predecessors, (1563), 1563 states have call successors, (1563) [2022-11-03 03:46:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 6361 transitions. [2022-11-03 03:46:09,939 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 6361 transitions. Word has length 142 [2022-11-03 03:46:09,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:09,941 INFO L495 AbstractCegarLoop]: Abstraction has 4399 states and 6361 transitions. [2022-11-03 03:46:09,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:46:09,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 6361 transitions. [2022-11-03 03:46:09,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-03 03:46:09,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:09,963 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:46:09,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:46:09,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:09,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:09,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2051280015, now seen corresponding path program 1 times [2022-11-03 03:46:09,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:09,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206273907] [2022-11-03 03:46:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:09,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-03 03:46:11,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:11,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206273907] [2022-11-03 03:46:11,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206273907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:11,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:11,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:11,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759983728] [2022-11-03 03:46:11,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:11,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:11,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:11,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:11,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:11,136 INFO L87 Difference]: Start difference. First operand 4399 states and 6361 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:46:13,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:18,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:21,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:24,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:28,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:32,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:32,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:32,962 INFO L93 Difference]: Finished difference Result 12947 states and 18699 transitions. [2022-11-03 03:46:32,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:32,967 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), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 174 [2022-11-03 03:46:32,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:33,036 INFO L225 Difference]: With dead ends: 12947 [2022-11-03 03:46:33,037 INFO L226 Difference]: Without dead ends: 8571 [2022-11-03 03:46:33,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:33,066 INFO L413 NwaCegarLoop]: 4152 mSDtfsCounter, 3349 mSDsluCounter, 3513 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3349 SdHoareTripleChecker+Valid, 7332 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:33,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3349 Valid, 7332 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 726 Invalid, 3 Unknown, 0 Unchecked, 21.1s Time] [2022-11-03 03:46:33,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8571 states. [2022-11-03 03:46:33,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8571 to 8566. [2022-11-03 03:46:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8566 states, 5062 states have (on average 1.2410114579217701) internal successors, (6282), 5138 states have internal predecessors, (6282), 3043 states have call successors, (3043), 461 states have call predecessors, (3043), 460 states have return successors, (3041), 3018 states have call predecessors, (3041), 3041 states have call successors, (3041) [2022-11-03 03:46:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8566 states to 8566 states and 12366 transitions. [2022-11-03 03:46:34,036 INFO L78 Accepts]: Start accepts. Automaton has 8566 states and 12366 transitions. Word has length 174 [2022-11-03 03:46:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:34,041 INFO L495 AbstractCegarLoop]: Abstraction has 8566 states and 12366 transitions. [2022-11-03 03:46:34,042 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), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:46:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 8566 states and 12366 transitions. [2022-11-03 03:46:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-03 03:46:34,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:34,058 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 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] [2022-11-03 03:46:34,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:46:34,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:34,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:34,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2001594684, now seen corresponding path program 1 times [2022-11-03 03:46:34,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:34,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706830990] [2022-11-03 03:46:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:34,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-03 03:46:35,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:35,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706830990] [2022-11-03 03:46:35,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706830990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:35,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:35,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:35,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262575365] [2022-11-03 03:46:35,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:35,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:35,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:35,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:35,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:35,727 INFO L87 Difference]: Start difference. First operand 8566 states and 12366 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 03:46:38,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:49,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:52,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:58,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:46:59,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:59,006 INFO L93 Difference]: Finished difference Result 21277 states and 30723 transitions. [2022-11-03 03:46:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:59,006 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), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 266 [2022-11-03 03:46:59,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:59,110 INFO L225 Difference]: With dead ends: 21277 [2022-11-03 03:46:59,110 INFO L226 Difference]: Without dead ends: 12734 [2022-11-03 03:46:59,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:59,165 INFO L413 NwaCegarLoop]: 6154 mSDtfsCounter, 3386 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3386 SdHoareTripleChecker+Valid, 9314 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:59,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3386 Valid, 9314 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1020 Invalid, 4 Unknown, 0 Unchecked, 22.8s Time] [2022-11-03 03:46:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12734 states. [2022-11-03 03:47:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12734 to 12727. [2022-11-03 03:47:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12727 states, 7530 states have (on average 1.240504648074369) internal successors, (9341), 7641 states have internal predecessors, (9341), 4513 states have call successors, (4513), 684 states have call predecessors, (4513), 683 states have return successors, (4511), 4474 states have call predecessors, (4511), 4511 states have call successors, (4511) [2022-11-03 03:47:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 18365 transitions. [2022-11-03 03:47:00,438 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 18365 transitions. Word has length 266 [2022-11-03 03:47:00,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:00,439 INFO L495 AbstractCegarLoop]: Abstraction has 12727 states and 18365 transitions. [2022-11-03 03:47:00,440 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), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 03:47:00,440 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 18365 transitions. [2022-11-03 03:47:00,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-11-03 03:47:00,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:00,455 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 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, 1, 1, 1, 1] [2022-11-03 03:47:00,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:47:00,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:00,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:00,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2069964559, now seen corresponding path program 1 times [2022-11-03 03:47:00,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:00,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998542284] [2022-11-03 03:47:00,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:00,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-11-03 03:47:01,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:01,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998542284] [2022-11-03 03:47:01,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998542284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:01,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:01,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:01,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162487856] [2022-11-03 03:47:01,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:01,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:01,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:01,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:01,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:01,376 INFO L87 Difference]: Start difference. First operand 12727 states and 18365 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:47:04,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:07,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:13,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:15,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:18,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:22,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:22,798 INFO L93 Difference]: Finished difference Result 35401 states and 50835 transitions. [2022-11-03 03:47:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:22,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 280 [2022-11-03 03:47:22,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:22,935 INFO L225 Difference]: With dead ends: 35401 [2022-11-03 03:47:22,936 INFO L226 Difference]: Without dead ends: 22697 [2022-11-03 03:47:23,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:23,005 INFO L413 NwaCegarLoop]: 4869 mSDtfsCounter, 2799 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2799 SdHoareTripleChecker+Valid, 8003 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:23,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2799 Valid, 8003 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 850 Invalid, 3 Unknown, 0 Unchecked, 20.7s Time] [2022-11-03 03:47:23,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22697 states. [2022-11-03 03:47:25,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22697 to 22685. [2022-11-03 03:47:25,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22685 states, 13381 states have (on average 1.2321201703908526) internal successors, (16487), 13570 states have internal predecessors, (16487), 8001 states have call successors, (8001), 1303 states have call predecessors, (8001), 1302 states have return successors, (7999), 7939 states have call predecessors, (7999), 7999 states have call successors, (7999) [2022-11-03 03:47:25,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22685 states to 22685 states and 32487 transitions. [2022-11-03 03:47:25,258 INFO L78 Accepts]: Start accepts. Automaton has 22685 states and 32487 transitions. Word has length 280 [2022-11-03 03:47:25,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:25,261 INFO L495 AbstractCegarLoop]: Abstraction has 22685 states and 32487 transitions. [2022-11-03 03:47:25,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:47:25,261 INFO L276 IsEmpty]: Start isEmpty. Operand 22685 states and 32487 transitions. [2022-11-03 03:47:25,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-03 03:47:25,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:25,280 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 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] [2022-11-03 03:47:25,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:47:25,280 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:25,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:25,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1159645269, now seen corresponding path program 1 times [2022-11-03 03:47:25,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:25,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376555692] [2022-11-03 03:47:25,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:25,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2022-11-03 03:47:26,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:26,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376555692] [2022-11-03 03:47:26,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376555692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:26,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:26,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:26,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665168612] [2022-11-03 03:47:26,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:26,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:26,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:26,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:26,582 INFO L87 Difference]: Start difference. First operand 22685 states and 32487 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:47:28,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:34,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:37,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:43,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:45,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:45,524 INFO L93 Difference]: Finished difference Result 42771 states and 61133 transitions. [2022-11-03 03:47:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:45,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 277 [2022-11-03 03:47:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:45,909 INFO L225 Difference]: With dead ends: 42771 [2022-11-03 03:47:45,909 INFO L226 Difference]: Without dead ends: 42767 [2022-11-03 03:47:45,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:45,931 INFO L413 NwaCegarLoop]: 3954 mSDtfsCounter, 3184 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3192 SdHoareTripleChecker+Valid, 7034 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:45,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3192 Valid, 7034 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 666 Invalid, 4 Unknown, 0 Unchecked, 17.9s Time] [2022-11-03 03:47:45,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42767 states. [2022-11-03 03:47:49,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42767 to 42750. [2022-11-03 03:47:50,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42750 states, 25308 states have (on average 1.236209894104631) internal successors, (31286), 25672 states have internal predecessors, (31286), 14878 states have call successors, (14878), 2580 states have call predecessors, (14878), 2563 states have return successors, (14929), 14725 states have call predecessors, (14929), 14876 states have call successors, (14929) [2022-11-03 03:47:50,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42750 states to 42750 states and 61093 transitions. [2022-11-03 03:47:50,348 INFO L78 Accepts]: Start accepts. Automaton has 42750 states and 61093 transitions. Word has length 277 [2022-11-03 03:47:50,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:50,349 INFO L495 AbstractCegarLoop]: Abstraction has 42750 states and 61093 transitions. [2022-11-03 03:47:50,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:47:50,350 INFO L276 IsEmpty]: Start isEmpty. Operand 42750 states and 61093 transitions. [2022-11-03 03:47:50,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-03 03:47:50,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:50,400 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-03 03:47:50,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:47:50,401 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:50,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:50,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1680718576, now seen corresponding path program 1 times [2022-11-03 03:47:50,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:50,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989391865] [2022-11-03 03:47:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:50,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2022-11-03 03:47:52,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:52,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989391865] [2022-11-03 03:47:52,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989391865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:52,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:52,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:52,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519487295] [2022-11-03 03:47:52,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:52,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:52,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:52,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:52,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:52,325 INFO L87 Difference]: Start difference. First operand 42750 states and 61093 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-03 03:47:54,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:04,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:06,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:11,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:13,074 INFO L93 Difference]: Finished difference Result 123596 states and 176519 transitions. [2022-11-03 03:48:13,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:13,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 366 [2022-11-03 03:48:13,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:13,766 INFO L225 Difference]: With dead ends: 123596 [2022-11-03 03:48:13,766 INFO L226 Difference]: Without dead ends: 80873 [2022-11-03 03:48:13,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:13,978 INFO L413 NwaCegarLoop]: 4905 mSDtfsCounter, 2964 mSDsluCounter, 3533 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2971 SdHoareTripleChecker+Valid, 8108 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:13,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2971 Valid, 8108 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 805 Invalid, 4 Unknown, 0 Unchecked, 17.7s Time] [2022-11-03 03:48:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80873 states. [2022-11-03 03:48:19,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80873 to 80852. [2022-11-03 03:48:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80852 states, 47779 states have (on average 1.2351660771468638) internal successors, (59015), 48447 states have internal predecessors, (59015), 28130 states have call successors, (28130), 4971 states have call predecessors, (28130), 4942 states have return successors, (28275), 27857 states have call predecessors, (28275), 28128 states have call successors, (28275) [2022-11-03 03:48:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80852 states to 80852 states and 115420 transitions. [2022-11-03 03:48:20,569 INFO L78 Accepts]: Start accepts. Automaton has 80852 states and 115420 transitions. Word has length 366 [2022-11-03 03:48:20,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:20,570 INFO L495 AbstractCegarLoop]: Abstraction has 80852 states and 115420 transitions. [2022-11-03 03:48:20,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-03 03:48:20,571 INFO L276 IsEmpty]: Start isEmpty. Operand 80852 states and 115420 transitions. [2022-11-03 03:48:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-11-03 03:48:20,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:20,656 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 12, 12, 12, 12, 12, 12, 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] [2022-11-03 03:48:20,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:48:20,657 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:20,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash -551106576, now seen corresponding path program 1 times [2022-11-03 03:48:20,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:20,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706371674] [2022-11-03 03:48:20,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:20,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1835 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1835 trivial. 0 not checked. [2022-11-03 03:48:22,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:22,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706371674] [2022-11-03 03:48:22,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706371674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:22,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:22,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:48:22,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262492925] [2022-11-03 03:48:22,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:22,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:48:22,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:22,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:48:22,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:22,416 INFO L87 Difference]: Start difference. First operand 80852 states and 115420 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-03 03:48:24,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:26,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:32,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:36,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:42,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:42,580 INFO L93 Difference]: Finished difference Result 121929 states and 174144 transitions. [2022-11-03 03:48:42,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:42,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 390 [2022-11-03 03:48:42,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:43,360 INFO L225 Difference]: With dead ends: 121929 [2022-11-03 03:48:43,360 INFO L226 Difference]: Without dead ends: 121925 [2022-11-03 03:48:43,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:48:43,425 INFO L413 NwaCegarLoop]: 4033 mSDtfsCounter, 3437 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3437 SdHoareTripleChecker+Valid, 7113 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:43,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3437 Valid, 7113 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 668 Invalid, 3 Unknown, 0 Unchecked, 16.2s Time] [2022-11-03 03:48:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121925 states. [2022-11-03 03:48:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121925 to 121858. [2022-11-03 03:48:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121858 states, 71983 states have (on average 1.2340552630482198) internal successors, (88831), 72982 states have internal predecessors, (88831), 42495 states have call successors, (42495), 7410 states have call predecessors, (42495), 7379 states have return successors, (42684), 42089 states have call predecessors, (42684), 42493 states have call successors, (42684) [2022-11-03 03:48:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121858 states to 121858 states and 174010 transitions. [2022-11-03 03:48:53,177 INFO L78 Accepts]: Start accepts. Automaton has 121858 states and 174010 transitions. Word has length 390 [2022-11-03 03:48:53,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:53,179 INFO L495 AbstractCegarLoop]: Abstraction has 121858 states and 174010 transitions. [2022-11-03 03:48:53,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-03 03:48:53,180 INFO L276 IsEmpty]: Start isEmpty. Operand 121858 states and 174010 transitions. [2022-11-03 03:48:53,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2022-11-03 03:48:53,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:53,500 INFO L195 NwaCegarLoop]: trace histogram [45, 17, 17, 17, 17, 17, 17, 17, 17, 17, 12, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:53,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:48:53,501 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:53,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:53,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1764128361, now seen corresponding path program 1 times [2022-11-03 03:48:53,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:53,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407392953] [2022-11-03 03:48:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:53,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms