./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7 --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 8e14f2a21a56a60e783d0aab2506240481fbe23123ec2497fb50b7b6292e33af --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:10:56,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:10:56,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:10:56,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:10:56,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:10:56,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:10:56,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:10:56,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:10:56,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:10:56,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:10:56,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:10:56,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:10:56,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:10:56,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:10:56,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:10:56,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:10:56,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:10:56,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:10:56,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:10:56,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:10:56,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:10:56,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:10:56,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:10:56,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:10:56,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:10:56,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:10:56,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:10:56,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:10:56,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:10:56,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:10:56,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:10:56,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:10:56,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:10:56,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:10:56,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:10:56,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:10:56,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:10:56,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:10:56,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:10:56,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:10:56,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:10:56,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:10:56,748 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:10:56,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:10:56,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:10:56,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:10:56,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:10:56,751 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:10:56,751 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:10:56,751 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:10:56,751 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:10:56,752 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:10:56,753 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:10:56,753 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:10:56,753 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:10:56,754 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:10:56,754 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:10:56,754 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:10:56,754 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:10:56,755 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:10:56,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:10:56,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:10:56,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:10:56,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:10:56,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:10:56,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:10:56,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:10:56,757 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:10:56,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:10:56,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:10:56,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:10:56,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:10:56,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:10:56,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:10:56,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:10:56,761 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:10:56,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:10:56,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:10:56,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:10:56,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:10:56,762 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e14f2a21a56a60e783d0aab2506240481fbe23123ec2497fb50b7b6292e33af [2021-11-25 19:10:57,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:10:57,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:10:57,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:10:57,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:10:57,066 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:10:57,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i [2021-11-25 19:10:57,153 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/data/15464f8ff/c741480b03d14e5d8818eeac93f7a013/FLAG62faa9655 [2021-11-25 19:10:58,311 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:10:58,312 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i [2021-11-25 19:10:58,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/data/15464f8ff/c741480b03d14e5d8818eeac93f7a013/FLAG62faa9655 [2021-11-25 19:10:58,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/data/15464f8ff/c741480b03d14e5d8818eeac93f7a013 [2021-11-25 19:10:58,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:10:58,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:10:58,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:10:58,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:10:58,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:10:58,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:10:58" (1/1) ... [2021-11-25 19:10:58,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0b7e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:10:58, skipping insertion in model container [2021-11-25 19:10:58,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:10:58" (1/1) ... [2021-11-25 19:10:58,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:10:58,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:10:59,446 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6571] [2021-11-25 19:10:59,447 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6572-6573] [2021-11-25 19:11:00,149 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_2dcf8656-bb9c-485b-89e1-3a586781b13a/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i[202382,202395] [2021-11-25 19:11:04,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:11:04,230 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:11:04,403 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6571] [2021-11-25 19:11:04,410 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6572-6573] [2021-11-25 19:11:04,427 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_2dcf8656-bb9c-485b-89e1-3a586781b13a/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i[202382,202395] [2021-11-25 19:11:04,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:11:05,375 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:11:05,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:05 WrapperNode [2021-11-25 19:11:05,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:11:05,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:11:05,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:11:05,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:11:05,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:05" (1/1) ... [2021-11-25 19:11:05,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:05" (1/1) ... [2021-11-25 19:11:06,190 INFO L137 Inliner]: procedures = 615, calls = 7318, calls flagged for inlining = 278, calls inlined = 266, statements flattened = 14805 [2021-11-25 19:11:06,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:11:06,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:11:06,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:11:06,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:11:06,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:05" (1/1) ... [2021-11-25 19:11:06,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:05" (1/1) ... [2021-11-25 19:11:06,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:05" (1/1) ... [2021-11-25 19:11:06,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:05" (1/1) ... [2021-11-25 19:11:06,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:05" (1/1) ... [2021-11-25 19:11:06,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:05" (1/1) ... [2021-11-25 19:11:06,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:05" (1/1) ... [2021-11-25 19:11:07,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:11:07,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:11:07,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:11:07,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:11:07,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:05" (1/1) ... [2021-11-25 19:11:07,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:11:07,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:11:07,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:11:07,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:11:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-25 19:11:07,094 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-25 19:11:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-25 19:11:07,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-25 19:11:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-25 19:11:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 19:11:07,095 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 19:11:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_irq [2021-11-25 19:11:07,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_irq [2021-11-25 19:11:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-25 19:11:07,096 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-25 19:11:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-25 19:11:07,096 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-25 19:11:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-25 19:11:07,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-25 19:11:07,097 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_completion_interrupt [2021-11-25 19:11:07,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_completion_interrupt [2021-11-25 19:11:07,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:11:07,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:11:07,097 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_both_serdes [2021-11-25 19:11:07,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_both_serdes [2021-11-25 19:11:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_xgmac_reg [2021-11-25 19:11:07,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_xgmac_reg [2021-11-25 19:11:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_reset [2021-11-25 19:11:07,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_reset [2021-11-25 19:11:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2021-11-25 19:11:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2021-11-25 19:11:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 19:11:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 19:11:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2021-11-25 19:11:07,100 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2021-11-25 19:11:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_send [2021-11-25 19:11:07,100 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_send [2021-11-25 19:11:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-25 19:11:07,101 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-25 19:11:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 19:11:07,101 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 19:11:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-25 19:11:07,102 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-25 19:11:07,102 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 19:11:07,102 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 19:11:07,102 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 19:11:07,102 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 19:11:07,103 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 19:11:07,103 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 19:11:07,104 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_regs_len [2021-11-25 19:11:07,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_regs_len [2021-11-25 19:11:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_vlan_rx_kill_vid [2021-11-25 19:11:07,105 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_vlan_rx_kill_vid [2021-11-25 19:11:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:11:07,105 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:11:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2021-11-25 19:11:07,106 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2021-11-25 19:11:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_shutdown [2021-11-25 19:11:07,106 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_shutdown [2021-11-25 19:11:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure ql_release_all [2021-11-25 19:11:07,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_release_all [2021-11-25 19:11:07,107 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_mac_hdr_len [2021-11-25 19:11:07,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_mac_hdr_len [2021-11-25 19:11:07,107 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mailbox_command [2021-11-25 19:11:07,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mailbox_command [2021-11-25 19:11:07,108 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-11-25 19:11:07,108 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-11-25 19:11:07,108 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 19:11:07,108 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 19:11:07,108 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_irq_mask [2021-11-25 19:11:07,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_irq_mask [2021-11-25 19:11:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:11:07,109 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:11:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 19:11:07,109 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 19:11:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure ql_dump_risc_ram_area [2021-11-25 19:11:07,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_dump_risc_ram_area [2021-11-25 19:11:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 19:11:07,111 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 19:11:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-25 19:11:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_other_func_reg [2021-11-25 19:11:07,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_other_func_reg [2021-11-25 19:11:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure __qlge_vlan_rx_add_vid [2021-11-25 19:11:07,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __qlge_vlan_rx_add_vid [2021-11-25 19:11:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 19:11:07,113 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 19:11:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-25 19:11:07,113 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-25 19:11:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:11:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 19:11:07,114 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 19:11:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_xgmac_regs [2021-11-25 19:11:07,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_xgmac_regs [2021-11-25 19:11:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure ql_queue_asic_error [2021-11-25 19:11:07,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_queue_asic_error [2021-11-25 19:11:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_buffer_queues [2021-11-25 19:11:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_buffer_queues [2021-11-25 19:11:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_cam_entries [2021-11-25 19:11:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_cam_entries [2021-11-25 19:11:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_mem_resources [2021-11-25 19:11:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_mem_resources [2021-11-25 19:11:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_xgmac_reg [2021-11-25 19:11:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_xgmac_reg [2021-11-25 19:11:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-25 19:11:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-25 19:11:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2021-11-25 19:11:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2021-11-25 19:11:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure ql_eeh_close [2021-11-25 19:11:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_eeh_close [2021-11-25 19:11:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure netif_receive_skb [2021-11-25 19:11:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_receive_skb [2021-11-25 19:11:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 19:11:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 19:11:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr_reg [2021-11-25 19:11:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr_reg [2021-11-25 19:11:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 19:11:07,124 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 19:11:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure skb_record_rx_queue [2021-11-25 19:11:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_record_rx_queue [2021-11-25 19:11:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-25 19:11:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-25 19:11:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:11:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_serdes_reg [2021-11-25 19:11:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_serdes_reg [2021-11-25 19:11:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-25 19:11:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-25 19:11:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 19:11:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 19:11:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 19:11:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 19:11:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure ql_build_coredump_seg_header [2021-11-25 19:11:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_build_coredump_seg_header [2021-11-25 19:11:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_close [2021-11-25 19:11:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_close [2021-11-25 19:11:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mb_sts [2021-11-25 19:11:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mb_sts [2021-11-25 19:11:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:11:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_open [2021-11-25 19:11:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_open [2021-11-25 19:11:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:11:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 19:11:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 19:11:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-25 19:11:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-25 19:11:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2021-11-25 19:11:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2021-11-25 19:11:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:11:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:11:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-25 19:11:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-25 19:11:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_probe [2021-11-25 19:11:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_probe [2021-11-25 19:11:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2021-11-25 19:11:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2021-11-25 19:11:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 19:11:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 19:11:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_rx_buffers [2021-11-25 19:11:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_rx_buffers [2021-11-25 19:11:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-25 19:11:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-25 19:11:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-25 19:11:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-25 19:11:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write32 [2021-11-25 19:11:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write32 [2021-11-25 19:11:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-11-25 19:11:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-11-25 19:11:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cam_route_initialize [2021-11-25 19:11:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cam_route_initialize [2021-11-25 19:11:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 19:11:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 19:11:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 19:11:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 19:11:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-25 19:11:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_other_func_reg_rdy [2021-11-25 19:11:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_other_func_reg_rdy [2021-11-25 19:11:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_trylock [2021-11-25 19:11:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_trylock [2021-11-25 19:11:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_port_cfg [2021-11-25 19:11:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_port_cfg [2021-11-25 19:11:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:11:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_mpi_reg [2021-11-25 19:11:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_mpi_reg [2021-11-25 19:11:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure __get_order [2021-11-25 19:11:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_order [2021-11-25 19:11:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2021-11-25 19:11:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2021-11-25 19:11:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:11:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 19:11:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 19:11:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_get_stats [2021-11-25 19:11:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_get_stats [2021-11-25 19:11:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 19:11:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 19:11:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:11:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 19:11:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2021-11-25 19:11:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2021-11-25 19:11:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_8012_flash_params [2021-11-25 19:11:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_8012_flash_params [2021-11-25 19:11:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:11:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:11:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_io_slot_reset [2021-11-25 19:11:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_io_slot_reset [2021-11-25 19:11:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 19:11:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 19:11:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_other_func_serdes_reg [2021-11-25 19:11:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_other_func_serdes_reg [2021-11-25 19:11:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 19:11:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 19:11:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_completion_interrupt [2021-11-25 19:11:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_completion_interrupt [2021-11-25 19:11:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_fill_page_desc [2021-11-25 19:11:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_fill_page_desc [2021-11-25 19:11:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 19:11:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 19:11:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure ql_clear_routing_entries [2021-11-25 19:11:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_clear_routing_entries [2021-11-25 19:11:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-25 19:11:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-25 19:11:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_off [2021-11-25 19:11:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_off [2021-11-25 19:11:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:11:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:11:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 19:11:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 19:11:07,149 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-25 19:11:07,149 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-25 19:11:07,149 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_tx_timeout [2021-11-25 19:11:07,149 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_tx_timeout [2021-11-25 19:11:07,149 INFO L130 BoogieDeclarations]: Found specification of procedure ql_8000_port_initialize [2021-11-25 19:11:07,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_8000_port_initialize [2021-11-25 19:11:07,150 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-25 19:11:07,150 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-25 19:11:07,150 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mpi_regs [2021-11-25 19:11:07,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mpi_regs [2021-11-25 19:11:07,150 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 19:11:07,150 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 19:11:07,150 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 19:11:07,152 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 19:11:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_set_mac_address [2021-11-25 19:11:07,155 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_set_mac_address [2021-11-25 19:11:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:11:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:11:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure ql_8012_port_initialize [2021-11-25 19:11:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_8012_port_initialize [2021-11-25 19:11:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-25 19:11:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-25 19:11:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_flash_word [2021-11-25 19:11:07,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_flash_word [2021-11-25 19:11:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_subqueue [2021-11-25 19:11:07,158 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_subqueue [2021-11-25 19:11:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 19:11:07,158 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 19:11:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure ql_release_adapter_resources [2021-11-25 19:11:07,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_release_adapter_resources [2021-11-25 19:11:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:11:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:11:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:11:07,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:11:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure csum_tcpudp_magic [2021-11-25 19:11:07,160 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_tcpudp_magic [2021-11-25 19:11:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 19:11:07,160 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 19:11:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 19:11:07,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 19:11:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_rx_resources [2021-11-25 19:11:07,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_rx_resources [2021-11-25 19:11:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-25 19:11:07,161 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-25 19:11:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 19:11:07,161 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 19:11:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 19:11:07,161 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 19:11:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2021-11-25 19:11:07,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2021-11-25 19:11:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 19:11:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure ql_soft_reset_mpi_risc [2021-11-25 19:11:07,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_soft_reset_mpi_risc [2021-11-25 19:11:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-25 19:11:07,162 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-25 19:11:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_remove [2021-11-25 19:11:07,163 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_remove [2021-11-25 19:11:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_cq_idx [2021-11-25 19:11:07,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_cq_idx [2021-11-25 19:11:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_on [2021-11-25 19:11:07,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_on [2021-11-25 19:11:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure napi_gro_receive [2021-11-25 19:11:07,164 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_gro_receive [2021-11-25 19:11:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_set_multicast_list [2021-11-25 19:11:07,164 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_set_multicast_list [2021-11-25 19:11:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 19:11:07,164 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 19:11:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2021-11-25 19:11:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2021-11-25 19:11:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 19:11:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 19:11:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2021-11-25 19:11:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2021-11-25 19:11:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-25 19:11:07,166 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-25 19:11:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 19:11:07,166 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 19:11:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-25 19:11:07,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-25 19:11:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure ql_tx_ring_clean [2021-11-25 19:11:07,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_tx_ring_clean [2021-11-25 19:11:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 19:11:07,167 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 19:11:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:11:07,167 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:11:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2021-11-25 19:11:07,167 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2021-11-25 19:11:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure skb_fill_page_desc [2021-11-25 19:11:07,168 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_fill_page_desc [2021-11-25 19:11:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:11:07,168 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:11:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_mpi_reg [2021-11-25 19:11:07,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_mpi_reg [2021-11-25 19:11:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 19:11:07,169 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 19:11:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure ql_clean_inbound_rx_ring [2021-11-25 19:11:07,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_clean_inbound_rx_ring [2021-11-25 19:11:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_cq [2021-11-25 19:11:07,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_cq [2021-11-25 19:11:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-25 19:11:07,169 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-25 19:11:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_subqueue [2021-11-25 19:11:07,170 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_subqueue [2021-11-25 19:11:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 19:11:07,170 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 19:11:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 19:11:07,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 19:11:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_set_features [2021-11-25 19:11:07,171 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_set_features [2021-11-25 19:11:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:11:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:11:07,171 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:11:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_curr_sbuf [2021-11-25 19:11:07,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_curr_sbuf [2021-11-25 19:11:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-25 19:11:07,172 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-25 19:11:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure ql_realign_skb [2021-11-25 19:11:07,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_realign_skb [2021-11-25 19:11:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 19:11:07,172 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 19:11:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_io_error_detected [2021-11-25 19:11:07,173 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_io_error_detected [2021-11-25 19:11:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_routing_entries [2021-11-25 19:11:07,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_routing_entries [2021-11-25 19:11:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:11:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-25 19:11:07,173 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-25 19:11:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure ql_process_mac_split_rx_intr [2021-11-25 19:11:07,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_process_mac_split_rx_intr [2021-11-25 19:11:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_suspend [2021-11-25 19:11:07,174 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_suspend [2021-11-25 19:11:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-25 19:11:07,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-25 19:11:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-25 19:11:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-25 19:11:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-25 19:11:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-25 19:11:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:11:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure __vlan_hwaccel_put_tag [2021-11-25 19:11:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __vlan_hwaccel_put_tag [2021-11-25 19:11:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure ql_validate_flash [2021-11-25 19:11:07,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_validate_flash [2021-11-25 19:11:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-25 19:11:07,176 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-25 19:11:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cancel_all_work_sync [2021-11-25 19:11:07,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cancel_all_work_sync [2021-11-25 19:11:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 19:11:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 19:11:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:11:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:11:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 19:11:07,178 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 19:11:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_8000_flash_params [2021-11-25 19:11:07,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_8000_flash_params [2021-11-25 19:11:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 19:11:07,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 19:11:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure ql_check_lb_frame [2021-11-25 19:11:07,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_check_lb_frame [2021-11-25 19:11:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-25 19:11:07,179 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-25 19:11:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-25 19:11:07,180 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-25 19:11:07,180 INFO L130 BoogieDeclarations]: Found specification of procedure ql_categorize_rx_err [2021-11-25 19:11:07,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_categorize_rx_err [2021-11-25 19:11:07,180 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-25 19:11:07,180 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-25 19:11:07,180 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 19:11:07,181 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 19:11:07,181 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 19:11:07,181 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 19:11:07,181 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_initialize [2021-11-25 19:11:07,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_initialize [2021-11-25 19:11:07,181 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-25 19:11:07,181 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-25 19:11:07,182 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_sh_reg [2021-11-25 19:11:07,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_sh_reg [2021-11-25 19:11:07,182 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-25 19:11:07,182 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-25 19:11:07,182 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 19:11:07,182 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 19:11:07,182 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-25 19:11:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-25 19:11:07,183 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_db_reg [2021-11-25 19:11:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_db_reg [2021-11-25 19:11:07,183 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:11:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:11:07,183 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_get_port_cfg [2021-11-25 19:11:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_get_port_cfg [2021-11-25 19:11:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_vlan_rx_add_vid [2021-11-25 19:11:07,184 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_vlan_rx_add_vid [2021-11-25 19:11:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:11:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-25 19:11:07,184 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-25 19:11:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-25 19:11:07,185 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-25 19:11:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:11:07,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:11:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_change_mtu [2021-11-25 19:11:07,185 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_change_mtu [2021-11-25 19:11:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_fix_features [2021-11-25 19:11:07,185 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_fix_features [2021-11-25 19:11:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2021-11-25 19:11:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2021-11-25 19:11:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 19:11:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 19:11:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-25 19:11:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-25 19:11:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure ql_queue_fw_error [2021-11-25 19:11:07,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_queue_fw_error [2021-11-25 19:11:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure ql_unmap_send [2021-11-25 19:11:07,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_unmap_send [2021-11-25 19:11:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-25 19:11:07,187 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-25 19:11:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mpi_handler [2021-11-25 19:11:07,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mpi_handler [2021-11-25 19:11:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_xgmac_reg64 [2021-11-25 19:11:07,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_xgmac_reg64 [2021-11-25 19:11:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 19:11:07,188 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 19:11:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_mgmnt_traffic_ctl [2021-11-25 19:11:07,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_mgmnt_traffic_ctl [2021-11-25 19:11:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_other_func_reg [2021-11-25 19:11:07,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_other_func_reg [2021-11-25 19:11:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-25 19:11:07,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-25 19:11:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_reg_rdy [2021-11-25 19:11:07,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_reg_rdy [2021-11-25 19:11:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_routing_reg [2021-11-25 19:11:07,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_routing_reg [2021-11-25 19:11:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-25 19:11:07,190 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-25 19:11:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-25 19:11:07,190 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-25 19:11:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_led_cfg [2021-11-25 19:11:07,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_led_cfg [2021-11-25 19:11:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_cfg [2021-11-25 19:11:07,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_cfg [2021-11-25 19:11:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mac_addr_reg [2021-11-25 19:11:07,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mac_addr_reg [2021-11-25 19:11:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure ql_lbq_block_size [2021-11-25 19:11:07,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_lbq_block_size [2021-11-25 19:11:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 19:11:07,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 19:11:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure ql_own_firmware [2021-11-25 19:11:07,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_own_firmware [2021-11-25 19:11:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 19:11:07,192 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 19:11:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure netif_get_num_default_rss_queues [2021-11-25 19:11:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_get_num_default_rss_queues [2021-11-25 19:11:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_curr_lchunk [2021-11-25 19:11:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_curr_lchunk [2021-11-25 19:11:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_ets_regs [2021-11-25 19:11:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_ets_regs [2021-11-25 19:11:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_cfg [2021-11-25 19:11:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_cfg [2021-11-25 19:11:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 19:11:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 19:11:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 19:11:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 19:11:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:11:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read32 [2021-11-25 19:11:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read32 [2021-11-25 19:11:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2021-11-25 19:11:07,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2021-11-25 19:11:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_intr_states [2021-11-25 19:11:07,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_intr_states [2021-11-25 19:11:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-25 19:11:07,195 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-25 19:11:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_resume [2021-11-25 19:11:07,196 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_resume [2021-11-25 19:11:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure ql_core_dump [2021-11-25 19:11:07,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_core_dump [2021-11-25 19:11:08,690 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:11:08,697 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:11:08,799 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:11:36,148 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:11:41,967 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:11:41,968 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:11:41,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:11:41 BoogieIcfgContainer [2021-11-25 19:11:41,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:11:41,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:11:41,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:11:41,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:11:41,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:10:58" (1/3) ... [2021-11-25 19:11:41,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d98cd09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:11:41, skipping insertion in model container [2021-11-25 19:11:41,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:11:05" (2/3) ... [2021-11-25 19:11:41,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d98cd09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:11:41, skipping insertion in model container [2021-11-25 19:11:41,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:11:41" (3/3) ... [2021-11-25 19:11:41,986 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i [2021-11-25 19:11:41,992 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:11:41,992 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:11:42,074 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:11:42,085 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:11:42,085 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:11:42,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 3704 states, 2260 states have (on average 1.331858407079646) internal successors, (3010), 2334 states have internal predecessors, (3010), 1207 states have call successors, (1207), 236 states have call predecessors, (1207), 235 states have return successors, (1197), 1182 states have call predecessors, (1197), 1197 states have call successors, (1197) [2021-11-25 19:11:42,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-25 19:11:42,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:42,242 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:42,243 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:42,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:42,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1405795938, now seen corresponding path program 1 times [2021-11-25 19:11:42,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:42,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899899365] [2021-11-25 19:11:42,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:42,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-25 19:11:43,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:43,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899899365] [2021-11-25 19:11:43,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899899365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:43,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:43,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:11:43,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573455161] [2021-11-25 19:11:43,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:43,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:11:43,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:43,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:11:43,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:11:43,707 INFO L87 Difference]: Start difference. First operand has 3704 states, 2260 states have (on average 1.331858407079646) internal successors, (3010), 2334 states have internal predecessors, (3010), 1207 states have call successors, (1207), 236 states have call predecessors, (1207), 235 states have return successors, (1197), 1182 states have call predecessors, (1197), 1197 states have call successors, (1197) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 19:11:45,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:48,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:50,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:11:55,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:02,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:02,836 INFO L93 Difference]: Finished difference Result 10796 states and 15827 transitions. [2021-11-25 19:12:02,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:12:02,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 121 [2021-11-25 19:12:02,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:02,937 INFO L225 Difference]: With dead ends: 10796 [2021-11-25 19:12:02,937 INFO L226 Difference]: Without dead ends: 7068 [2021-11-25 19:12:02,974 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:12:02,978 INFO L933 BasicCegarLoop]: 6432 mSDtfsCounter, 4957 mSDsluCounter, 5288 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4962 SdHoareTripleChecker+Valid, 11111 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:02,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4962 Valid, 11111 Invalid, 1465 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1454 Invalid, 4 Unknown, 0 Unchecked, 18.5s Time] [2021-11-25 19:12:03,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7068 states. [2021-11-25 19:12:03,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7068 to 7059. [2021-11-25 19:12:03,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7059 states, 4300 states have (on average 1.3213953488372092) internal successors, (5682), 4429 states have internal predecessors, (5682), 2300 states have call successors, (2300), 460 states have call predecessors, (2300), 458 states have return successors, (2303), 2261 states have call predecessors, (2303), 2298 states have call successors, (2303) [2021-11-25 19:12:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7059 states to 7059 states and 10285 transitions. [2021-11-25 19:12:03,563 INFO L78 Accepts]: Start accepts. Automaton has 7059 states and 10285 transitions. Word has length 121 [2021-11-25 19:12:03,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:03,565 INFO L470 AbstractCegarLoop]: Abstraction has 7059 states and 10285 transitions. [2021-11-25 19:12:03,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 19:12:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 7059 states and 10285 transitions. [2021-11-25 19:12:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 19:12:03,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:03,581 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 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] [2021-11-25 19:12:03,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:12:03,584 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:03,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:03,586 INFO L85 PathProgramCache]: Analyzing trace with hash 105927183, now seen corresponding path program 1 times [2021-11-25 19:12:03,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:03,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124520774] [2021-11-25 19:12:03,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:03,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-25 19:12:04,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:04,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124520774] [2021-11-25 19:12:04,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124520774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:04,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:04,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:12:04,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129870537] [2021-11-25 19:12:04,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:04,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:12:04,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:04,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:12:04,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:12:04,346 INFO L87 Difference]: Start difference. First operand 7059 states and 10285 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 19:12:06,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:08,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:11,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:12:16,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:17,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:20,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:24,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:24,724 INFO L93 Difference]: Finished difference Result 20891 states and 30418 transitions. [2021-11-25 19:12:24,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:12:24,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 130 [2021-11-25 19:12:24,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:24,854 INFO L225 Difference]: With dead ends: 20891 [2021-11-25 19:12:24,854 INFO L226 Difference]: Without dead ends: 13851 [2021-11-25 19:12:24,899 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:12:24,900 INFO L933 BasicCegarLoop]: 6154 mSDtfsCounter, 5124 mSDsluCounter, 5332 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5129 SdHoareTripleChecker+Valid, 10875 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:24,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5129 Valid, 10875 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1326 Invalid, 5 Unknown, 0 Unchecked, 19.8s Time] [2021-11-25 19:12:24,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13851 states. [2021-11-25 19:12:25,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13851 to 13843. [2021-11-25 19:12:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13843 states, 8434 states have (on average 1.3208442020393645) internal successors, (11140), 8691 states have internal predecessors, (11140), 4500 states have call successors, (4500), 911 states have call predecessors, (4500), 908 states have return successors, (4512), 4420 states have call predecessors, (4512), 4498 states have call successors, (4512) [2021-11-25 19:12:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13843 states to 13843 states and 20152 transitions. [2021-11-25 19:12:25,839 INFO L78 Accepts]: Start accepts. Automaton has 13843 states and 20152 transitions. Word has length 130 [2021-11-25 19:12:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:25,841 INFO L470 AbstractCegarLoop]: Abstraction has 13843 states and 20152 transitions. [2021-11-25 19:12:25,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 19:12:25,843 INFO L276 IsEmpty]: Start isEmpty. Operand 13843 states and 20152 transitions. [2021-11-25 19:12:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-25 19:12:25,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:25,862 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:25,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:12:25,864 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:25,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash -674229498, now seen corresponding path program 1 times [2021-11-25 19:12:25,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:25,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350798101] [2021-11-25 19:12:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:25,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-25 19:12:26,617 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:26,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350798101] [2021-11-25 19:12:26,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350798101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:26,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:26,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:12:26,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750687333] [2021-11-25 19:12:26,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:26,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:12:26,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:26,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:12:26,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:12:26,622 INFO L87 Difference]: Start difference. First operand 13843 states and 20152 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:12:28,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:31,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:33,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:12:40,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:41,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:43,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:46,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:48,059 INFO L93 Difference]: Finished difference Result 39779 states and 57922 transitions. [2021-11-25 19:12:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:12:48,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 151 [2021-11-25 19:12:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:48,228 INFO L225 Difference]: With dead ends: 39779 [2021-11-25 19:12:48,229 INFO L226 Difference]: Without dead ends: 25955 [2021-11-25 19:12:48,312 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:12:48,315 INFO L933 BasicCegarLoop]: 6418 mSDtfsCounter, 4918 mSDsluCounter, 5337 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4922 SdHoareTripleChecker+Valid, 11145 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:48,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4922 Valid, 11145 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1326 Invalid, 5 Unknown, 0 Unchecked, 20.7s Time] [2021-11-25 19:12:48,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25955 states. [2021-11-25 19:12:49,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25955 to 25947. [2021-11-25 19:12:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25947 states, 15833 states have (on average 1.3228699551569507) internal successors, (20945), 16307 states have internal predecessors, (20945), 8410 states have call successors, (8410), 1706 states have call predecessors, (8410), 1703 states have return successors, (8432), 8270 states have call predecessors, (8432), 8408 states have call successors, (8432) [2021-11-25 19:12:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25947 states to 25947 states and 37787 transitions. [2021-11-25 19:12:49,773 INFO L78 Accepts]: Start accepts. Automaton has 25947 states and 37787 transitions. Word has length 151 [2021-11-25 19:12:49,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:49,773 INFO L470 AbstractCegarLoop]: Abstraction has 25947 states and 37787 transitions. [2021-11-25 19:12:49,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:12:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 25947 states and 37787 transitions. [2021-11-25 19:12:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-25 19:12:49,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:49,797 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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] [2021-11-25 19:12:49,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:12:49,797 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:49,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:49,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1747239250, now seen corresponding path program 1 times [2021-11-25 19:12:49,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:49,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521240168] [2021-11-25 19:12:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:49,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-25 19:12:50,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:50,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521240168] [2021-11-25 19:12:50,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521240168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:50,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:50,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:12:50,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89623454] [2021-11-25 19:12:50,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:50,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:12:50,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:50,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:12:50,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:12:50,771 INFO L87 Difference]: Start difference. First operand 25947 states and 37787 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-25 19:12:52,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:55,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:58,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:13:02,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:13:07,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:13:09,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:13:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:14,048 INFO L93 Difference]: Finished difference Result 64788 states and 94345 transitions. [2021-11-25 19:13:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:14,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 192 [2021-11-25 19:13:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:14,475 INFO L225 Difference]: With dead ends: 64788 [2021-11-25 19:13:14,476 INFO L226 Difference]: Without dead ends: 38860 [2021-11-25 19:13:14,567 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:13:14,572 INFO L933 BasicCegarLoop]: 8447 mSDtfsCounter, 5241 mSDsluCounter, 5323 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 16 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5246 SdHoareTripleChecker+Valid, 13160 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:14,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5246 Valid, 13160 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1703 Invalid, 5 Unknown, 0 Unchecked, 22.3s Time] [2021-11-25 19:13:14,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38860 states. [2021-11-25 19:13:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38860 to 38852. [2021-11-25 19:13:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38852 states, 23712 states have (on average 1.3219888663967612) internal successors, (31347), 24417 states have internal predecessors, (31347), 12579 states have call successors, (12579), 2564 states have call predecessors, (12579), 2560 states have return successors, (12613), 12371 states have call predecessors, (12613), 12577 states have call successors, (12613) [2021-11-25 19:13:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38852 states to 38852 states and 56539 transitions. [2021-11-25 19:13:16,910 INFO L78 Accepts]: Start accepts. Automaton has 38852 states and 56539 transitions. Word has length 192 [2021-11-25 19:13:16,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:16,911 INFO L470 AbstractCegarLoop]: Abstraction has 38852 states and 56539 transitions. [2021-11-25 19:13:16,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-25 19:13:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 38852 states and 56539 transitions. [2021-11-25 19:13:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-25 19:13:16,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:16,945 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 9, 9, 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] [2021-11-25 19:13:16,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:13:16,945 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:16,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:16,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1415797862, now seen corresponding path program 1 times [2021-11-25 19:13:16,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:16,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727908537] [2021-11-25 19:13:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:16,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-25 19:13:17,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:17,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727908537] [2021-11-25 19:13:17,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727908537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:17,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:17,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:13:17,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237272919] [2021-11-25 19:13:17,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:17,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:17,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:17,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:17,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:17,447 INFO L87 Difference]: Start difference. First operand 38852 states and 56539 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-25 19:13:19,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:13:21,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:13:24,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:13:26,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:13:29,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:13:31,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:13:37,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:13:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:43,236 INFO L93 Difference]: Finished difference Result 101180 states and 146478 transitions. [2021-11-25 19:13:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:43,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 213 [2021-11-25 19:13:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:43,821 INFO L225 Difference]: With dead ends: 101180 [2021-11-25 19:13:43,821 INFO L226 Difference]: Without dead ends: 62347 [2021-11-25 19:13:43,989 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:13:43,989 INFO L933 BasicCegarLoop]: 7238 mSDtfsCounter, 3568 mSDsluCounter, 5313 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3574 SdHoareTripleChecker+Valid, 11947 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:43,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3574 Valid, 11947 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1580 Invalid, 6 Unknown, 0 Unchecked, 24.3s Time] [2021-11-25 19:13:44,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62347 states. [2021-11-25 19:13:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62347 to 62341. [2021-11-25 19:13:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62341 states, 38276 states have (on average 1.3201483958616365) internal successors, (50530), 39406 states have internal predecessors, (50530), 19672 states have call successors, (19672), 4399 states have call predecessors, (19672), 4392 states have return successors, (19748), 19350 states have call predecessors, (19748), 19670 states have call successors, (19748) [2021-11-25 19:13:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62341 states to 62341 states and 89950 transitions. [2021-11-25 19:13:47,248 INFO L78 Accepts]: Start accepts. Automaton has 62341 states and 89950 transitions. Word has length 213 [2021-11-25 19:13:47,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:47,249 INFO L470 AbstractCegarLoop]: Abstraction has 62341 states and 89950 transitions. [2021-11-25 19:13:47,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-25 19:13:47,249 INFO L276 IsEmpty]: Start isEmpty. Operand 62341 states and 89950 transitions. [2021-11-25 19:13:47,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-25 19:13:47,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:47,310 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 19:13:47,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:13:47,311 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:47,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:47,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2088933976, now seen corresponding path program 1 times [2021-11-25 19:13:47,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:47,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800910309] [2021-11-25 19:13:47,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:47,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-25 19:13:48,160 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:48,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800910309] [2021-11-25 19:13:48,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800910309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:48,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:48,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:13:48,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818929941] [2021-11-25 19:13:48,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:48,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:13:48,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:48,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:13:48,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:13:48,163 INFO L87 Difference]: Start difference. First operand 62341 states and 89950 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:13:50,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:13:53,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:13:56,143 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:04,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:06,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:08,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:14,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:14:14,721 INFO L93 Difference]: Finished difference Result 124855 states and 181517 transitions. [2021-11-25 19:14:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:14:14,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 206 [2021-11-25 19:14:14,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:14:15,323 INFO L225 Difference]: With dead ends: 124855 [2021-11-25 19:14:15,324 INFO L226 Difference]: Without dead ends: 62533 [2021-11-25 19:14:15,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:14:15,551 INFO L933 BasicCegarLoop]: 4752 mSDtfsCounter, 5 mSDsluCounter, 16085 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18996 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:14:15,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 18996 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2470 Invalid, 4 Unknown, 0 Unchecked, 24.5s Time] [2021-11-25 19:14:15,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62533 states. [2021-11-25 19:14:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62533 to 62437. [2021-11-25 19:14:17,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62437 states, 38348 states have (on average 1.3195473036403462) internal successors, (50602), 39478 states have internal predecessors, (50602), 19672 states have call successors, (19672), 4399 states have call predecessors, (19672), 4416 states have return successors, (20094), 19374 states have call predecessors, (20094), 19670 states have call successors, (20094) [2021-11-25 19:14:18,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62437 states to 62437 states and 90368 transitions. [2021-11-25 19:14:18,484 INFO L78 Accepts]: Start accepts. Automaton has 62437 states and 90368 transitions. Word has length 206 [2021-11-25 19:14:18,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:18,486 INFO L470 AbstractCegarLoop]: Abstraction has 62437 states and 90368 transitions. [2021-11-25 19:14:18,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:14:18,486 INFO L276 IsEmpty]: Start isEmpty. Operand 62437 states and 90368 transitions. [2021-11-25 19:14:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-25 19:14:18,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:18,554 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 19:14:18,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:14:18,555 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:18,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:18,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1156798312, now seen corresponding path program 1 times [2021-11-25 19:14:18,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:14:18,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401222052] [2021-11-25 19:14:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:18,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:14:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-25 19:14:19,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:14:19,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401222052] [2021-11-25 19:14:19,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401222052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:19,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701843853] [2021-11-25 19:14:19,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:19,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:19,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:19,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:14:19,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:14:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:22,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 8841 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:14:22,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-25 19:14:22,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:14:22,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701843853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:14:22,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:14:22,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2021-11-25 19:14:22,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163163685] [2021-11-25 19:14:22,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:14:22,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:14:22,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:14:22,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:14:22,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:14:22,742 INFO L87 Difference]: Start difference. First operand 62437 states and 90368 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2021-11-25 19:14:23,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:25,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:28,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:30,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:33,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:37,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:39,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:42,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:14:46,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:48,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:53,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:55,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:56,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:14:59,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:02,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:04,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:09,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:09,924 INFO L93 Difference]: Finished difference Result 125215 states and 184204 transitions. [2021-11-25 19:15:09,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:15:09,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) Word has length 211 [2021-11-25 19:15:09,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:10,250 INFO L225 Difference]: With dead ends: 125215 [2021-11-25 19:15:10,251 INFO L226 Difference]: Without dead ends: 62677 [2021-11-25 19:15:10,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:15:10,640 INFO L933 BasicCegarLoop]: 4734 mSDtfsCounter, 19 mSDsluCounter, 21319 mSDsCounter, 0 mSdLazyCounter, 3249 mSolverCounterSat, 23 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 23591 SdHoareTripleChecker+Invalid, 3281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3249 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:10,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 23591 Invalid, 3281 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 3249 Invalid, 9 Unknown, 0 Unchecked, 45.0s Time] [2021-11-25 19:15:10,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62677 states. [2021-11-25 19:15:12,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62677 to 62653. [2021-11-25 19:15:12,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62653 states, 38456 states have (on average 1.3192739754524652) internal successors, (50734), 39622 states have internal predecessors, (50734), 19744 states have call successors, (19744), 4399 states have call predecessors, (19744), 4452 states have return successors, (20226), 19446 states have call predecessors, (20226), 19742 states have call successors, (20226) [2021-11-25 19:15:13,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62653 states to 62653 states and 90704 transitions. [2021-11-25 19:15:13,614 INFO L78 Accepts]: Start accepts. Automaton has 62653 states and 90704 transitions. Word has length 211 [2021-11-25 19:15:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:13,615 INFO L470 AbstractCegarLoop]: Abstraction has 62653 states and 90704 transitions. [2021-11-25 19:15:13,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2021-11-25 19:15:13,616 INFO L276 IsEmpty]: Start isEmpty. Operand 62653 states and 90704 transitions. [2021-11-25 19:15:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-25 19:15:13,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:13,661 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 19:15:13,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:13,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:13,881 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:13,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:13,881 INFO L85 PathProgramCache]: Analyzing trace with hash -442095770, now seen corresponding path program 1 times [2021-11-25 19:15:13,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:15:13,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855987852] [2021-11-25 19:15:13,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:13,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:15:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-25 19:15:14,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:15:14,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855987852] [2021-11-25 19:15:14,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855987852] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:14,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817768181] [2021-11-25 19:15:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:14,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:14,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:14,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:14,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:15:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:17,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 8843 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:15:17,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-25 19:15:17,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:15:17,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817768181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:17,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:15:17,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-25 19:15:17,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470243574] [2021-11-25 19:15:17,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:17,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:15:17,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:15:17,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:15:17,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:15:17,584 INFO L87 Difference]: Start difference. First operand 62653 states and 90704 transitions. Second operand has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2021-11-25 19:15:19,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:23,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:26,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:15:30,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:36,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:38,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:15:46,539 INFO L93 Difference]: Finished difference Result 125647 states and 184900 transitions. [2021-11-25 19:15:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:15:46,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) Word has length 212 [2021-11-25 19:15:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:15:47,096 INFO L225 Difference]: With dead ends: 125647 [2021-11-25 19:15:47,096 INFO L226 Difference]: Without dead ends: 62893 [2021-11-25 19:15:47,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:15:47,304 INFO L933 BasicCegarLoop]: 4727 mSDtfsCounter, 36 mSDsluCounter, 21269 mSDsCounter, 0 mSdLazyCounter, 3270 mSolverCounterSat, 32 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 23548 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3270 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:15:47,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 23548 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3270 Invalid, 5 Unknown, 0 Unchecked, 27.1s Time] [2021-11-25 19:15:47,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62893 states. [2021-11-25 19:15:49,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62893 to 62653. [2021-11-25 19:15:49,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62653 states, 38456 states have (on average 1.3192739754524652) internal successors, (50734), 39622 states have internal predecessors, (50734), 19744 states have call successors, (19744), 4399 states have call predecessors, (19744), 4452 states have return successors, (20226), 19446 states have call predecessors, (20226), 19742 states have call successors, (20226) [2021-11-25 19:15:49,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62653 states to 62653 states and 90704 transitions. [2021-11-25 19:15:49,862 INFO L78 Accepts]: Start accepts. Automaton has 62653 states and 90704 transitions. Word has length 212 [2021-11-25 19:15:49,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:15:49,864 INFO L470 AbstractCegarLoop]: Abstraction has 62653 states and 90704 transitions. [2021-11-25 19:15:49,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2021-11-25 19:15:49,864 INFO L276 IsEmpty]: Start isEmpty. Operand 62653 states and 90704 transitions. [2021-11-25 19:15:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-25 19:15:49,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:15:49,902 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 19:15:49,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:15:50,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:50,117 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:15:50,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:15:50,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2004636643, now seen corresponding path program 1 times [2021-11-25 19:15:50,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:15:50,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711736856] [2021-11-25 19:15:50,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:50,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:15:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-25 19:15:50,849 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:15:50,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711736856] [2021-11-25 19:15:50,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711736856] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:15:50,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427002464] [2021-11-25 19:15:50,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:15:50,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:15:50,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:15:50,851 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:15:50,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:15:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:15:53,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 8845 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:15:53,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:15:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-25 19:15:53,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:15:53,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427002464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:15:53,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:15:53,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-25 19:15:53,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842407281] [2021-11-25 19:15:53,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:15:53,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:15:53,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:15:53,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:15:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:15:53,721 INFO L87 Difference]: Start difference. First operand 62653 states and 90704 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2021-11-25 19:15:55,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:15:59,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:03,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:16:06,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:16:08,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:16:19,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:20,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:23,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:25,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:35,715 INFO L93 Difference]: Finished difference Result 125669 states and 184813 transitions. [2021-11-25 19:16:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:16:35,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) Word has length 213 [2021-11-25 19:16:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:36,444 INFO L225 Difference]: With dead ends: 125669 [2021-11-25 19:16:36,444 INFO L226 Difference]: Without dead ends: 63015 [2021-11-25 19:16:36,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:16:36,812 INFO L933 BasicCegarLoop]: 4723 mSDtfsCounter, 40 mSDsluCounter, 21269 mSDsCounter, 0 mSdLazyCounter, 3285 mSolverCounterSat, 34 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 23536 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3285 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:36,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 23536 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3285 Invalid, 7 Unknown, 0 Unchecked, 39.9s Time] [2021-11-25 19:16:36,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63015 states. [2021-11-25 19:16:39,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63015 to 62961. [2021-11-25 19:16:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62961 states, 38632 states have (on average 1.3189583764754607) internal successors, (50954), 39820 states have internal predecessors, (50954), 19832 states have call successors, (19832), 4421 states have call predecessors, (19832), 4496 states have return successors, (20384), 19534 states have call predecessors, (20384), 19830 states have call successors, (20384) [2021-11-25 19:16:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62961 states to 62961 states and 91170 transitions. [2021-11-25 19:16:40,023 INFO L78 Accepts]: Start accepts. Automaton has 62961 states and 91170 transitions. Word has length 213 [2021-11-25 19:16:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:40,025 INFO L470 AbstractCegarLoop]: Abstraction has 62961 states and 91170 transitions. [2021-11-25 19:16:40,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2021-11-25 19:16:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 62961 states and 91170 transitions. [2021-11-25 19:16:40,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-25 19:16:40,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:40,113 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 19:16:40,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:40,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 19:16:40,329 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:16:40,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:40,329 INFO L85 PathProgramCache]: Analyzing trace with hash 395143656, now seen corresponding path program 1 times [2021-11-25 19:16:40,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:16:40,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318635794] [2021-11-25 19:16:40,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:40,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:16:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-25 19:16:41,450 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:16:41,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318635794] [2021-11-25 19:16:41,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318635794] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:16:41,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719420879] [2021-11-25 19:16:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:41,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:16:41,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:16:41,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:16:41,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:16:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:44,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 8787 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:16:44,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-25 19:16:44,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:16:44,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719420879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:44,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:16:44,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2021-11-25 19:16:44,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623134920] [2021-11-25 19:16:44,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:44,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 19:16:44,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:16:44,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 19:16:44,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:16:44,829 INFO L87 Difference]: Start difference. First operand 62961 states and 91170 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 5 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 19:16:46,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:50,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:16:55,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:17:00,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:02,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:06,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:11,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:14,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:16,818 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:18,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:21,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:24,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:25,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:28,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:30,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:34,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:35,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:37,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:43,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:17:51,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:17:51,309 INFO L93 Difference]: Finished difference Result 126187 states and 183807 transitions. [2021-11-25 19:17:51,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:17:51,310 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 5 states have call predecessors, (28), 2 states have call successors, (28) Word has length 208 [2021-11-25 19:17:51,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:17:51,729 INFO L225 Difference]: With dead ends: 126187 [2021-11-25 19:17:51,729 INFO L226 Difference]: Without dead ends: 63245 [2021-11-25 19:17:52,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:17:52,250 INFO L933 BasicCegarLoop]: 4768 mSDtfsCounter, 6 mSDsluCounter, 48399 mSDsCounter, 0 mSdLazyCounter, 6206 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 47655 SdHoareTripleChecker+Invalid, 6215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6206 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:17:52,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 47655 Invalid, 6215 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 6206 Invalid, 7 Unknown, 0 Unchecked, 63.9s Time] [2021-11-25 19:17:52,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63245 states. [2021-11-25 19:17:54,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63245 to 63131. [2021-11-25 19:17:54,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63131 states, 38759 states have (on average 1.3172940478340514) internal successors, (51057), 39948 states have internal predecessors, (51057), 19832 states have call successors, (19832), 4421 states have call predecessors, (19832), 4539 states have return successors, (20505), 19576 states have call predecessors, (20505), 19830 states have call successors, (20505) [2021-11-25 19:17:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63131 states to 63131 states and 91394 transitions. [2021-11-25 19:17:55,395 INFO L78 Accepts]: Start accepts. Automaton has 63131 states and 91394 transitions. Word has length 208 [2021-11-25 19:17:55,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:17:55,397 INFO L470 AbstractCegarLoop]: Abstraction has 63131 states and 91394 transitions. [2021-11-25 19:17:55,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (28), 5 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 19:17:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand 63131 states and 91394 transitions. [2021-11-25 19:17:55,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-25 19:17:55,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:17:55,458 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 19:17:55,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:17:55,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:17:55,684 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:17:55,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:17:55,685 INFO L85 PathProgramCache]: Analyzing trace with hash -598153428, now seen corresponding path program 1 times [2021-11-25 19:17:55,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:17:55,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104758384] [2021-11-25 19:17:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:17:55,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:17:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:17:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-25 19:17:56,151 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:17:56,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104758384] [2021-11-25 19:17:56,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104758384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:17:56,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:17:56,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:17:56,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711816025] [2021-11-25 19:17:56,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:17:56,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:17:56,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:17:56,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:17:56,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:17:56,155 INFO L87 Difference]: Start difference. First operand 63131 states and 91394 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 19:17:58,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:01,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:03,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:18:05,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:18:12,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:14,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:18:19,113 INFO L93 Difference]: Finished difference Result 126435 states and 184131 transitions. [2021-11-25 19:18:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:18:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 219 [2021-11-25 19:18:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:18:19,522 INFO L225 Difference]: With dead ends: 126435 [2021-11-25 19:18:19,522 INFO L226 Difference]: Without dead ends: 63323 [2021-11-25 19:18:19,854 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:18:19,856 INFO L933 BasicCegarLoop]: 4754 mSDtfsCounter, 5 mSDsluCounter, 5362 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 9502 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:18:19,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 9502 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1233 Invalid, 5 Unknown, 0 Unchecked, 21.0s Time] [2021-11-25 19:18:19,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63323 states. [2021-11-25 19:18:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63323 to 63155. [2021-11-25 19:18:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63155 states, 38783 states have (on average 1.3170976974447568) internal successors, (51081), 39972 states have internal predecessors, (51081), 19832 states have call successors, (19832), 4421 states have call predecessors, (19832), 4539 states have return successors, (20505), 19576 states have call predecessors, (20505), 19830 states have call successors, (20505) [2021-11-25 19:18:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63155 states to 63155 states and 91418 transitions. [2021-11-25 19:18:23,160 INFO L78 Accepts]: Start accepts. Automaton has 63155 states and 91418 transitions. Word has length 219 [2021-11-25 19:18:23,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:18:23,169 INFO L470 AbstractCegarLoop]: Abstraction has 63155 states and 91418 transitions. [2021-11-25 19:18:23,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 19:18:23,170 INFO L276 IsEmpty]: Start isEmpty. Operand 63155 states and 91418 transitions. [2021-11-25 19:18:23,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-25 19:18:23,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:18:23,215 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 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] [2021-11-25 19:18:23,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:18:23,215 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:18:23,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:18:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1436520391, now seen corresponding path program 1 times [2021-11-25 19:18:23,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:18:23,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781286467] [2021-11-25 19:18:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:18:23,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:18:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:18:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-25 19:18:23,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:18:23,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781286467] [2021-11-25 19:18:23,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781286467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:18:23,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:18:23,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:18:23,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744557804] [2021-11-25 19:18:23,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:18:23,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:18:23,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:18:23,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:18:23,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:18:23,798 INFO L87 Difference]: Start difference. First operand 63155 states and 91418 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-25 19:18:26,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:28,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:31,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:18:34,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:37,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:39,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:41,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:46,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:18:49,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:18:49,879 INFO L93 Difference]: Finished difference Result 133863 states and 195219 transitions. [2021-11-25 19:18:49,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:18:49,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 213 [2021-11-25 19:18:49,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:18:50,660 INFO L225 Difference]: With dead ends: 133863 [2021-11-25 19:18:50,661 INFO L226 Difference]: Without dead ends: 70727 [2021-11-25 19:18:50,941 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:18:50,942 INFO L933 BasicCegarLoop]: 5456 mSDtfsCounter, 602 mSDsluCounter, 5472 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 9 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 10319 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:18:50,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 10319 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1305 Invalid, 6 Unknown, 0 Unchecked, 23.3s Time] [2021-11-25 19:18:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70727 states. [2021-11-25 19:18:53,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70727 to 63167. [2021-11-25 19:18:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63167 states, 38795 states have (on average 1.3169996133522361) internal successors, (51093), 39984 states have internal predecessors, (51093), 19832 states have call successors, (19832), 4421 states have call predecessors, (19832), 4539 states have return successors, (20505), 19576 states have call predecessors, (20505), 19830 states have call successors, (20505) [2021-11-25 19:18:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63167 states to 63167 states and 91430 transitions. [2021-11-25 19:18:54,206 INFO L78 Accepts]: Start accepts. Automaton has 63167 states and 91430 transitions. Word has length 213 [2021-11-25 19:18:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:18:54,208 INFO L470 AbstractCegarLoop]: Abstraction has 63167 states and 91430 transitions. [2021-11-25 19:18:54,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-25 19:18:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 63167 states and 91430 transitions. [2021-11-25 19:18:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-25 19:18:54,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:18:54,248 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 19:18:54,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:18:54,248 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:18:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:18:54,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1725664921, now seen corresponding path program 1 times [2021-11-25 19:18:54,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:18:54,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123074805] [2021-11-25 19:18:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:18:54,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:18:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:18:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-25 19:18:54,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:18:54,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123074805] [2021-11-25 19:18:54,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123074805] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:18:54,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477219924] [2021-11-25 19:18:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:18:54,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:18:54,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:18:54,781 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:18:54,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:18:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:18:57,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 8908 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:18:57,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:18:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-25 19:18:58,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:18:58,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477219924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:18:58,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:18:58,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-25 19:18:58,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335757864] [2021-11-25 19:18:58,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:18:58,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:18:58,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:18:58,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:18:58,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:18:58,419 INFO L87 Difference]: Start difference. First operand 63167 states and 91430 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 19:19:00,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:03,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:06,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:19:08,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:19:10,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:19:12,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:19:17,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:21,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:24,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:25,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:26,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:28,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:30,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:39,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:19:39,562 INFO L93 Difference]: Finished difference Result 126943 states and 186872 transitions. [2021-11-25 19:19:39,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:19:39,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 227 [2021-11-25 19:19:39,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:19:39,922 INFO L225 Difference]: With dead ends: 126943 [2021-11-25 19:19:39,923 INFO L226 Difference]: Without dead ends: 63795 [2021-11-25 19:19:40,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:19:40,199 INFO L933 BasicCegarLoop]: 4780 mSDtfsCounter, 5 mSDsluCounter, 16167 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 19103 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:19:40,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 19103 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2471 Invalid, 8 Unknown, 0 Unchecked, 38.8s Time] [2021-11-25 19:19:40,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63795 states. [2021-11-25 19:19:42,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63795 to 63331. [2021-11-25 19:19:42,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63331 states, 38935 states have (on average 1.3158597662771285) internal successors, (51233), 40090 states have internal predecessors, (51233), 19832 states have call successors, (19832), 4421 states have call predecessors, (19832), 4563 states have return successors, (20587), 19634 states have call predecessors, (20587), 19830 states have call successors, (20587) [2021-11-25 19:19:43,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63331 states to 63331 states and 91652 transitions. [2021-11-25 19:19:43,597 INFO L78 Accepts]: Start accepts. Automaton has 63331 states and 91652 transitions. Word has length 227 [2021-11-25 19:19:43,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:19:43,598 INFO L470 AbstractCegarLoop]: Abstraction has 63331 states and 91652 transitions. [2021-11-25 19:19:43,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 19:19:43,598 INFO L276 IsEmpty]: Start isEmpty. Operand 63331 states and 91652 transitions. [2021-11-25 19:19:43,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-25 19:19:43,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:43,640 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:19:43,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-25 19:19:43,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:43,842 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:19:43,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:43,842 INFO L85 PathProgramCache]: Analyzing trace with hash -76636266, now seen corresponding path program 1 times [2021-11-25 19:19:43,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:43,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598437434] [2021-11-25 19:19:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:43,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:44,261 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-25 19:19:44,261 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:44,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598437434] [2021-11-25 19:19:44,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598437434] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:44,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157478129] [2021-11-25 19:19:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:44,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:44,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:44,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:19:44,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:19:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:47,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 8968 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:19:47,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:47,833 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-25 19:19:47,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:19:47,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157478129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:19:47,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:19:47,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-25 19:19:47,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811330025] [2021-11-25 19:19:47,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:19:47,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:19:47,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:19:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:19:47,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:19:47,836 INFO L87 Difference]: Start difference. First operand 63331 states and 91652 transitions. Second operand has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 7 states have internal predecessors, (103), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-25 19:19:50,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:53,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:19:57,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:20:02,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:05,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:12,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:15,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:17,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:18,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:21,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:28,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:30,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:38,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:20:38,461 INFO L93 Difference]: Finished difference Result 127075 states and 185996 transitions. [2021-11-25 19:20:38,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:20:38,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 7 states have internal predecessors, (103), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 233 [2021-11-25 19:20:38,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:20:38,831 INFO L225 Difference]: With dead ends: 127075 [2021-11-25 19:20:38,831 INFO L226 Difference]: Without dead ends: 63763 [2021-11-25 19:20:39,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:20:39,112 INFO L933 BasicCegarLoop]: 4722 mSDtfsCounter, 38 mSDsluCounter, 26590 mSDsCounter, 0 mSdLazyCounter, 3918 mSolverCounterSat, 37 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 28246 SdHoareTripleChecker+Invalid, 3962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3918 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:20:39,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 28246 Invalid, 3962 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 3918 Invalid, 7 Unknown, 0 Unchecked, 48.0s Time] [2021-11-25 19:20:39,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63763 states. [2021-11-25 19:20:41,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63763 to 63715. [2021-11-25 19:20:42,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63715 states, 39175 states have (on average 1.3151499680918954) internal successors, (51521), 40330 states have internal predecessors, (51521), 19928 states have call successors, (19928), 4445 states have call predecessors, (19928), 4611 states have return successors, (20725), 19754 states have call predecessors, (20725), 19926 states have call successors, (20725) [2021-11-25 19:20:42,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63715 states to 63715 states and 92174 transitions. [2021-11-25 19:20:42,424 INFO L78 Accepts]: Start accepts. Automaton has 63715 states and 92174 transitions. Word has length 233 [2021-11-25 19:20:42,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:20:42,425 INFO L470 AbstractCegarLoop]: Abstraction has 63715 states and 92174 transitions. [2021-11-25 19:20:42,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 7 states have internal predecessors, (103), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-25 19:20:42,425 INFO L276 IsEmpty]: Start isEmpty. Operand 63715 states and 92174 transitions. [2021-11-25 19:20:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-25 19:20:42,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:20:42,467 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:20:42,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:20:42,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-25 19:20:42,668 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:20:42,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:20:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2039072415, now seen corresponding path program 1 times [2021-11-25 19:20:42,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:20:42,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127844698] [2021-11-25 19:20:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:42,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:20:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-25 19:20:43,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:20:43,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127844698] [2021-11-25 19:20:43,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127844698] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:20:43,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273852887] [2021-11-25 19:20:43,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:20:43,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:20:43,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:20:43,461 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:20:43,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:20:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:20:46,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 8970 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:20:46,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:20:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-25 19:20:46,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:20:46,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273852887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:20:46,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:20:46,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-25 19:20:46,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688330514] [2021-11-25 19:20:46,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:20:46,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:20:46,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:20:46,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:20:46,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:20:46,720 INFO L87 Difference]: Start difference. First operand 63715 states and 92174 transitions. Second operand has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-25 19:20:48,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:53,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:55,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:57,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:20:59,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:04,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:21:09,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:13,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:17,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:20,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:22,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:23,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:25,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:31,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:38,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:21:38,098 INFO L93 Difference]: Finished difference Result 127843 states and 186892 transitions. [2021-11-25 19:21:38,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:21:38,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 234 [2021-11-25 19:21:38,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:21:38,479 INFO L225 Difference]: With dead ends: 127843 [2021-11-25 19:21:38,479 INFO L226 Difference]: Without dead ends: 64147 [2021-11-25 19:21:39,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:21:39,096 INFO L933 BasicCegarLoop]: 4719 mSDtfsCounter, 42 mSDsluCounter, 21261 mSDsCounter, 0 mSdLazyCounter, 3270 mSolverCounterSat, 39 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 23524 SdHoareTripleChecker+Invalid, 3319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3270 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:21:39,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 23524 Invalid, 3319 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 3270 Invalid, 10 Unknown, 0 Unchecked, 49.1s Time] [2021-11-25 19:21:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64147 states. [2021-11-25 19:21:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64147 to 64099. [2021-11-25 19:21:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64099 states, 39415 states have (on average 1.3144488139033363) internal successors, (51809), 40570 states have internal predecessors, (51809), 20024 states have call successors, (20024), 4469 states have call predecessors, (20024), 4659 states have return successors, (20963), 19874 states have call predecessors, (20963), 20022 states have call successors, (20963) [2021-11-25 19:21:42,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64099 states to 64099 states and 92796 transitions. [2021-11-25 19:21:42,330 INFO L78 Accepts]: Start accepts. Automaton has 64099 states and 92796 transitions. Word has length 234 [2021-11-25 19:21:42,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:21:42,331 INFO L470 AbstractCegarLoop]: Abstraction has 64099 states and 92796 transitions. [2021-11-25 19:21:42,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-25 19:21:42,331 INFO L276 IsEmpty]: Start isEmpty. Operand 64099 states and 92796 transitions. [2021-11-25 19:21:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-25 19:21:42,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:21:42,374 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 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] [2021-11-25 19:21:42,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:21:42,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:21:42,575 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:21:42,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:21:42,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1130061830, now seen corresponding path program 1 times [2021-11-25 19:21:42,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:21:42,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762961043] [2021-11-25 19:21:42,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:21:42,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:21:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:21:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2021-11-25 19:21:43,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:21:43,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762961043] [2021-11-25 19:21:43,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762961043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:21:43,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:21:43,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:21:43,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218932460] [2021-11-25 19:21:43,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:21:43,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:21:43,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:21:43,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:21:43,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:21:43,577 INFO L87 Difference]: Start difference. First operand 64099 states and 92796 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-25 19:21:45,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:48,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:21:52,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:21:55,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:01,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:03,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:05,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:08,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:11,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:16,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:19,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:20,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:22:20,873 INFO L93 Difference]: Finished difference Result 151363 states and 223625 transitions. [2021-11-25 19:22:20,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:22:20,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 215 [2021-11-25 19:22:20,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:22:21,386 INFO L225 Difference]: With dead ends: 151363 [2021-11-25 19:22:21,386 INFO L226 Difference]: Without dead ends: 87283 [2021-11-25 19:22:21,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:22:21,636 INFO L933 BasicCegarLoop]: 6049 mSDtfsCounter, 2436 mSDsluCounter, 12675 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 367 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2812 SdHoareTripleChecker+Valid, 17346 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 2123 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:22:21,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2812 Valid, 17346 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 2123 Invalid, 6 Unknown, 0 Unchecked, 33.9s Time] [2021-11-25 19:22:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87283 states. [2021-11-25 19:22:24,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87283 to 64123. [2021-11-25 19:22:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64123 states, 39439 states have (on average 1.3142574608889677) internal successors, (51833), 40594 states have internal predecessors, (51833), 20024 states have call successors, (20024), 4469 states have call predecessors, (20024), 4659 states have return successors, (20963), 19874 states have call predecessors, (20963), 20022 states have call successors, (20963) [2021-11-25 19:22:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64123 states to 64123 states and 92820 transitions. [2021-11-25 19:22:25,622 INFO L78 Accepts]: Start accepts. Automaton has 64123 states and 92820 transitions. Word has length 215 [2021-11-25 19:22:25,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:22:25,623 INFO L470 AbstractCegarLoop]: Abstraction has 64123 states and 92820 transitions. [2021-11-25 19:22:25,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-25 19:22:25,623 INFO L276 IsEmpty]: Start isEmpty. Operand 64123 states and 92820 transitions. [2021-11-25 19:22:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-25 19:22:25,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:22:25,691 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:22:25,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 19:22:25,691 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:22:25,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:22:25,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1542738223, now seen corresponding path program 1 times [2021-11-25 19:22:25,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:22:25,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298877551] [2021-11-25 19:22:25,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:25,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:22:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-25 19:22:26,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:22:26,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298877551] [2021-11-25 19:22:26,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298877551] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:22:26,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571013807] [2021-11-25 19:22:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:22:26,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:22:26,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:22:26,249 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:22:26,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:22:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:22:29,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 8972 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:22:29,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:22:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-25 19:22:30,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:22:30,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571013807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:22:30,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:22:30,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-25 19:22:30,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604330071] [2021-11-25 19:22:30,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:22:30,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:22:30,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:22:30,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:22:30,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:22:30,050 INFO L87 Difference]: Start difference. First operand 64123 states and 92820 transitions. Second operand has 7 states, 6 states have (on average 17.5) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-25 19:22:32,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:35,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:40,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:22:44,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:47,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:48,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:52,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:56,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:22:58,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:00,436 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:03,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:05,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:09,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:23:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:23:19,530 INFO L93 Difference]: Finished difference Result 128635 states and 188196 transitions. [2021-11-25 19:23:19,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:23:19,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.5) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 235 [2021-11-25 19:23:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:23:19,920 INFO L225 Difference]: With dead ends: 128635 [2021-11-25 19:23:19,920 INFO L226 Difference]: Without dead ends: 64387 [2021-11-25 19:23:20,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:23:20,436 INFO L933 BasicCegarLoop]: 4718 mSDtfsCounter, 36 mSDsluCounter, 26579 mSDsCounter, 0 mSdLazyCounter, 3916 mSolverCounterSat, 41 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 28231 SdHoareTripleChecker+Invalid, 3963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3916 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:23:20,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 28231 Invalid, 3963 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 3916 Invalid, 6 Unknown, 0 Unchecked, 46.8s Time] [2021-11-25 19:23:20,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64387 states. [2021-11-25 19:23:23,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64387 to 64279. [2021-11-25 19:23:23,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64279 states, 39535 states have (on average 1.3141014291134439) internal successors, (51953), 40690 states have internal predecessors, (51953), 20072 states have call successors, (20072), 4469 states have call predecessors, (20072), 4671 states have return successors, (21155), 19934 states have call predecessors, (21155), 20070 states have call successors, (21155) [2021-11-25 19:23:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64279 states to 64279 states and 93180 transitions. [2021-11-25 19:23:23,483 INFO L78 Accepts]: Start accepts. Automaton has 64279 states and 93180 transitions. Word has length 235 [2021-11-25 19:23:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:23:23,483 INFO L470 AbstractCegarLoop]: Abstraction has 64279 states and 93180 transitions. [2021-11-25 19:23:23,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.5) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-25 19:23:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 64279 states and 93180 transitions. [2021-11-25 19:23:23,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-25 19:23:23,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:23:23,535 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:23:23,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-25 19:23:23,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-25 19:23:23,736 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:23:23,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:23:23,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1359021318, now seen corresponding path program 1 times [2021-11-25 19:23:23,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:23:23,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956249434] [2021-11-25 19:23:23,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:23,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:23:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:23:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-25 19:23:24,584 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:23:24,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956249434] [2021-11-25 19:23:24,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956249434] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:23:24,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416131217] [2021-11-25 19:23:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:23:24,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:23:24,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:23:24,587 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:23:24,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf8656-bb9c-485b-89e1-3a586781b13a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process