./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--scsi--dpt_i2o.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS --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 0c3010ce5e1d1499df5a7edf91735fcbf8e6e49f56d21e0e77b6af352c375fd6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:35:16,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:35:16,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:35:17,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:35:17,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:35:17,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:35:17,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:35:17,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:35:17,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:35:17,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:35:17,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:35:17,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:35:17,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:35:17,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:35:17,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:35:17,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:35:17,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:35:17,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:35:17,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:35:17,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:35:17,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:35:17,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:35:17,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:35:17,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:35:17,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:35:17,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:35:17,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:35:17,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:35:17,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:35:17,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:35:17,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:35:17,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:35:17,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:35:17,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:35:17,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:35:17,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:35:17,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:35:17,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:35:17,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:35:17,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:35:17,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:35:17,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:35:17,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:35:17,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:35:17,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:35:17,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:35:17,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:35:17,161 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:35:17,161 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:35:17,162 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:35:17,162 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:35:17,162 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:35:17,163 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:35:17,164 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:35:17,164 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:35:17,164 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:35:17,165 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:35:17,165 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:35:17,165 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:35:17,165 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:35:17,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:35:17,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:35:17,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:35:17,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:35:17,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:35:17,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:35:17,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:35:17,170 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:35:17,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:35:17,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:35:17,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:35:17,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:35:17,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:35:17,172 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:35:17,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:35:17,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:35:17,172 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:35:17,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:35:17,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:35:17,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:35:17,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c3010ce5e1d1499df5a7edf91735fcbf8e6e49f56d21e0e77b6af352c375fd6 [2022-11-19 08:35:17,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:35:17,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:35:17,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:35:17,483 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:35:17,484 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:35:17,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i [2022-11-19 08:35:17,566 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/data/a1b142121/61907c174e4c482bbab5fa2522320d92/FLAGa024010bd [2022-11-19 08:35:18,638 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:35:18,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i [2022-11-19 08:35:18,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/data/a1b142121/61907c174e4c482bbab5fa2522320d92/FLAGa024010bd [2022-11-19 08:35:18,974 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/data/a1b142121/61907c174e4c482bbab5fa2522320d92 [2022-11-19 08:35:18,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:35:18,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:35:18,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:35:18,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:35:18,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:35:18,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:35:18" (1/1) ... [2022-11-19 08:35:18,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac29a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:18, skipping insertion in model container [2022-11-19 08:35:18,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:35:18" (1/1) ... [2022-11-19 08:35:19,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:35:19,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:35:19,819 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4571] [2022-11-19 08:35:19,824 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4572-4573] [2022-11-19 08:35:20,158 WARN L234 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_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i[141860,141873] [2022-11-19 08:35:21,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:35:21,361 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:35:21,490 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4571] [2022-11-19 08:35:21,491 WARN L1258 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4572-4573] [2022-11-19 08:35:21,502 WARN L234 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_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i[141860,141873] [2022-11-19 08:35:22,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:35:22,157 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:35:22,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:22 WrapperNode [2022-11-19 08:35:22,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:35:22,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:35:22,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:35:22,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:35:22,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:22" (1/1) ... [2022-11-19 08:35:22,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:22" (1/1) ... [2022-11-19 08:35:22,543 INFO L138 Inliner]: procedures = 250, calls = 2395, calls flagged for inlining = 129, calls inlined = 127, statements flattened = 6488 [2022-11-19 08:35:22,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:35:22,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:35:22,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:35:22,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:35:22,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:22" (1/1) ... [2022-11-19 08:35:22,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:22" (1/1) ... [2022-11-19 08:35:22,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:22" (1/1) ... [2022-11-19 08:35:22,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:22" (1/1) ... [2022-11-19 08:35:22,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:22" (1/1) ... [2022-11-19 08:35:22,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:22" (1/1) ... [2022-11-19 08:35:22,864 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:22" (1/1) ... [2022-11-19 08:35:22,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:22" (1/1) ... [2022-11-19 08:35:22,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:35:22,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:35:22,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:35:22,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:35:22,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:22" (1/1) ... [2022-11-19 08:35:22,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:35:22,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:35:22,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:35:23,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:35:23,035 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_cmd_from_context [2022-11-19 08:35:23,035 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_cmd_from_context [2022-11-19 08:35:23,036 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-19 08:35:23,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:35:23,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:35:23,036 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 08:35:23,036 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 08:35:23,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:35:23,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:35:23,037 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_delete_hba [2022-11-19 08:35:23,037 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_delete_hba [2022-11-19 08:35:23,037 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2022-11-19 08:35:23,037 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2022-11-19 08:35:23,037 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2022-11-19 08:35:23,038 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2022-11-19 08:35:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-19 08:35:23,038 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-19 08:35:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-19 08:35:23,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-19 08:35:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:35:23,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:35:23,039 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_status_get [2022-11-19 08:35:23,039 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_status_get [2022-11-19 08:35:23,039 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_build_sys_table [2022-11-19 08:35:23,039 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_build_sys_table [2022-11-19 08:35:23,039 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2022-11-19 08:35:23,040 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2022-11-19 08:35:23,040 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_online_hba [2022-11-19 08:35:23,040 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_online_hba [2022-11-19 08:35:23,040 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_remove_host [2022-11-19 08:35:23,040 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_remove_host [2022-11-19 08:35:23,040 INFO L130 BoogieDeclarations]: Found specification of procedure __scsi_iterate_devices [2022-11-19 08:35:23,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __scsi_iterate_devices [2022-11-19 08:35:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 08:35:23,041 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 08:35:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:35:23,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:35:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_2 [2022-11-19 08:35:23,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_2 [2022-11-19 08:35:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2022-11-19 08:35:23,042 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2022-11-19 08:35:23,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:35:23,043 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:35:23,043 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_query_scalar [2022-11-19 08:35:23,044 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_query_scalar [2022-11-19 08:35:23,045 INFO L130 BoogieDeclarations]: Found specification of procedure dma_high [2022-11-19 08:35:23,045 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_high [2022-11-19 08:35:23,045 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:35:23,045 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:35:23,045 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 08:35:23,046 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 08:35:23,046 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_hba_reset [2022-11-19 08:35:23,046 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_hba_reset [2022-11-19 08:35:23,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:35:23,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:35:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-19 08:35:23,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-19 08:35:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-11-19 08:35:23,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-11-19 08:35:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 08:35:23,048 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 08:35:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:35:23,049 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 08:35:23,049 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 08:35:23,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:35:23,049 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-19 08:35:23,049 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-19 08:35:23,050 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_lct_get [2022-11-19 08:35:23,050 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_lct_get [2022-11-19 08:35:23,050 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 08:35:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 08:35:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:35:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:35:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 08:35:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 08:35:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_reparse_lct [2022-11-19 08:35:23,052 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_reparse_lct [2022-11-19 08:35:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 08:35:23,052 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 08:35:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_post_wait [2022-11-19 08:35:23,053 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_post_wait [2022-11-19 08:35:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:35:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:35:23,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:35:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-19 08:35:23,055 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-19 08:35:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure dma_low [2022-11-19 08:35:23,055 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_low [2022-11-19 08:35:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 08:35:23,056 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 08:35:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 08:35:23,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 08:35:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_adjust_queue_depth [2022-11-19 08:35:23,057 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_adjust_queue_depth [2022-11-19 08:35:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:35:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_activate_hba [2022-11-19 08:35:23,057 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_activate_hba [2022-11-19 08:35:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-19 08:35:23,058 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-19 08:35:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:35:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_ioctl [2022-11-19 08:35:23,058 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_ioctl [2022-11-19 08:35:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_reset_hba [2022-11-19 08:35:23,059 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_reset_hba [2022-11-19 08:35:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:35:23,060 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:35:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_read_blink_led [2022-11-19 08:35:23,063 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_read_blink_led [2022-11-19 08:35:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 08:35:23,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 08:35:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-19 08:35:23,066 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-19 08:35:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:35:23,068 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:35:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:35:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-19 08:35:23,082 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-19 08:35:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_send_nop [2022-11-19 08:35:23,083 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_send_nop [2022-11-19 08:35:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-19 08:35:23,083 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-19 08:35:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:35:23,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:35:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:35:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_install_device [2022-11-19 08:35:23,084 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_install_device [2022-11-19 08:35:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure dpt_dma64 [2022-11-19 08:35:23,084 INFO L138 BoogieDeclarations]: Found implementation of procedure dpt_dma64 [2022-11-19 08:35:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-19 08:35:23,084 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-19 08:35:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:35:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_cmd_to_context [2022-11-19 08:35:23,084 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_cmd_to_context [2022-11-19 08:35:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:35:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 08:35:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-19 08:35:23,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-19 08:35:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:35:23,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:35:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-19 08:35:23,085 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-19 08:35:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-19 08:35:23,086 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-19 08:35:23,086 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_set_state [2022-11-19 08:35:23,086 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_set_state [2022-11-19 08:35:23,086 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-19 08:35:23,086 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-19 08:35:23,086 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_online [2022-11-19 08:35:23,086 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_online [2022-11-19 08:35:23,086 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_post_this [2022-11-19 08:35:23,086 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_post_this [2022-11-19 08:35:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 08:35:23,087 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 08:35:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-19 08:35:23,087 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-19 08:35:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_sys_shutdown [2022-11-19 08:35:23,087 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_sys_shutdown [2022-11-19 08:35:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 08:35:23,087 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 08:35:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 08:35:23,088 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 08:35:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:35:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_report_hba_unit [2022-11-19 08:35:23,088 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_report_hba_unit [2022-11-19 08:35:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2022-11-19 08:35:23,089 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2022-11-19 08:35:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-19 08:35:23,089 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-19 08:35:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:35:23,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:35:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 08:35:23,089 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 08:35:24,156 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:35:24,159 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:35:24,984 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:35:40,124 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:35:42,574 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:35:42,574 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:35:42,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:35:42 BoogieIcfgContainer [2022-11-19 08:35:42,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:35:42,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:35:42,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:35:42,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:35:42,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:35:18" (1/3) ... [2022-11-19 08:35:42,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f57d152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:35:42, skipping insertion in model container [2022-11-19 08:35:42,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:35:22" (2/3) ... [2022-11-19 08:35:42,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f57d152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:35:42, skipping insertion in model container [2022-11-19 08:35:42,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:35:42" (3/3) ... [2022-11-19 08:35:42,604 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i [2022-11-19 08:35:42,625 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:35:42,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:35:42,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:35:42,737 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16849235, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:35:42,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:35:42,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 1509 states, 994 states have (on average 1.3853118712273642) internal successors, (1377), 1018 states have internal predecessors, (1377), 437 states have call successors, (437), 77 states have call predecessors, (437), 76 states have return successors, (431), 430 states have call predecessors, (431), 431 states have call successors, (431) [2022-11-19 08:35:42,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-19 08:35:42,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:42,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:42,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:35:42,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:42,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1867549064, now seen corresponding path program 1 times [2022-11-19 08:35:42,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:42,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929265561] [2022-11-19 08:35:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:42,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 08:35:43,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:43,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929265561] [2022-11-19 08:35:43,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929265561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:43,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:43,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:35:43,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335658524] [2022-11-19 08:35:43,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:43,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:35:43,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:43,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:35:43,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:35:43,818 INFO L87 Difference]: Start difference. First operand has 1509 states, 994 states have (on average 1.3853118712273642) internal successors, (1377), 1018 states have internal predecessors, (1377), 437 states have call successors, (437), 77 states have call predecessors, (437), 76 states have return successors, (431), 430 states have call predecessors, (431), 431 states have call successors, (431) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:35:46,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:49,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:52,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:54,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:57,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:35:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:35:57,094 INFO L93 Difference]: Finished difference Result 4271 states and 6436 transitions. [2022-11-19 08:35:57,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:35:57,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2022-11-19 08:35:57,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:35:57,163 INFO L225 Difference]: With dead ends: 4271 [2022-11-19 08:35:57,164 INFO L226 Difference]: Without dead ends: 2739 [2022-11-19 08:35:57,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:35:57,198 INFO L413 NwaCegarLoop]: 2392 mSDtfsCounter, 1856 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 4377 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:35:57,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1864 Valid, 4377 Invalid, 481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 469 Invalid, 4 Unknown, 0 Unchecked, 12.8s Time] [2022-11-19 08:35:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2022-11-19 08:35:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2728. [2022-11-19 08:35:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2728 states, 1799 states have (on average 1.3718732629238466) internal successors, (2468), 1828 states have internal predecessors, (2468), 787 states have call successors, (787), 142 states have call predecessors, (787), 141 states have return successors, (786), 783 states have call predecessors, (786), 786 states have call successors, (786) [2022-11-19 08:35:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 4041 transitions. [2022-11-19 08:35:57,575 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 4041 transitions. Word has length 53 [2022-11-19 08:35:57,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:35:57,577 INFO L495 AbstractCegarLoop]: Abstraction has 2728 states and 4041 transitions. [2022-11-19 08:35:57,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:35:57,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 4041 transitions. [2022-11-19 08:35:57,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 08:35:57,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:35:57,597 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:35:57,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:35:57,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:35:57,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:35:57,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1933950879, now seen corresponding path program 1 times [2022-11-19 08:35:57,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:35:57,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466339317] [2022-11-19 08:35:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:35:57,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:35:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:35:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:35:58,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:35:58,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466339317] [2022-11-19 08:35:58,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466339317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:35:58,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:35:58,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:35:58,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918954373] [2022-11-19 08:35:58,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:35:58,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:35:58,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:35:58,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:35:58,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:35:58,074 INFO L87 Difference]: Start difference. First operand 2728 states and 4041 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 08:36:00,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:03,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:06,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:09,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:10,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:10,783 INFO L93 Difference]: Finished difference Result 5182 states and 7840 transitions. [2022-11-19 08:36:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:36:10,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-11-19 08:36:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:10,840 INFO L225 Difference]: With dead ends: 5182 [2022-11-19 08:36:10,840 INFO L226 Difference]: Without dead ends: 5179 [2022-11-19 08:36:10,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:36:10,849 INFO L413 NwaCegarLoop]: 2785 mSDtfsCounter, 2049 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:10,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2049 Valid, 4704 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 463 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2022-11-19 08:36:10,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5179 states. [2022-11-19 08:36:11,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5179 to 5071. [2022-11-19 08:36:11,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5071 states, 3362 states have (on average 1.3753718024985129) internal successors, (4624), 3405 states have internal predecessors, (4624), 1438 states have call successors, (1438), 268 states have call predecessors, (1438), 270 states have return successors, (1573), 1441 states have call predecessors, (1573), 1437 states have call successors, (1573) [2022-11-19 08:36:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5071 states to 5071 states and 7635 transitions. [2022-11-19 08:36:11,205 INFO L78 Accepts]: Start accepts. Automaton has 5071 states and 7635 transitions. Word has length 67 [2022-11-19 08:36:11,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:11,208 INFO L495 AbstractCegarLoop]: Abstraction has 5071 states and 7635 transitions. [2022-11-19 08:36:11,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 08:36:11,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5071 states and 7635 transitions. [2022-11-19 08:36:11,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-19 08:36:11,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:11,213 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:36:11,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:36:11,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:11,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash 384081191, now seen corresponding path program 1 times [2022-11-19 08:36:11,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:11,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544460974] [2022-11-19 08:36:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:11,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 08:36:12,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:12,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544460974] [2022-11-19 08:36:12,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544460974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:36:12,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:36:12,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:36:12,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076331597] [2022-11-19 08:36:12,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:36:12,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:36:12,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:12,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:36:12,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:36:12,347 INFO L87 Difference]: Start difference. First operand 5071 states and 7635 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 08:36:14,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:17,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:22,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:22,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:22,362 INFO L93 Difference]: Finished difference Result 9511 states and 14546 transitions. [2022-11-19 08:36:22,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:36:22,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-11-19 08:36:22,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:22,462 INFO L225 Difference]: With dead ends: 9511 [2022-11-19 08:36:22,462 INFO L226 Difference]: Without dead ends: 9508 [2022-11-19 08:36:22,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:36:22,475 INFO L413 NwaCegarLoop]: 2530 mSDtfsCounter, 2047 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 4450 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:22,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2047 Valid, 4450 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 433 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2022-11-19 08:36:22,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9508 states. [2022-11-19 08:36:23,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9508 to 9442. [2022-11-19 08:36:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9442 states, 6258 states have (on average 1.3769574944071588) internal successors, (8617), 6352 states have internal predecessors, (8617), 2664 states have call successors, (2664), 517 states have call predecessors, (2664), 519 states have return successors, (3152), 2644 states have call predecessors, (3152), 2663 states have call successors, (3152) [2022-11-19 08:36:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9442 states to 9442 states and 14433 transitions. [2022-11-19 08:36:23,170 INFO L78 Accepts]: Start accepts. Automaton has 9442 states and 14433 transitions. Word has length 75 [2022-11-19 08:36:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:23,171 INFO L495 AbstractCegarLoop]: Abstraction has 9442 states and 14433 transitions. [2022-11-19 08:36:23,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 08:36:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 9442 states and 14433 transitions. [2022-11-19 08:36:23,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-19 08:36:23,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:23,182 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:36:23,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:36:23,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash -906563763, now seen corresponding path program 1 times [2022-11-19 08:36:23,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:23,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500015773] [2022-11-19 08:36:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:23,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:23,525 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-19 08:36:23,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:23,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500015773] [2022-11-19 08:36:23,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500015773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:36:23,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:36:23,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:36:23,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407198097] [2022-11-19 08:36:23,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:36:23,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:36:23,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:23,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:36:23,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:36:23,529 INFO L87 Difference]: Start difference. First operand 9442 states and 14433 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:36:25,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:28,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:30,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:34,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:34,706 INFO L93 Difference]: Finished difference Result 25977 states and 39578 transitions. [2022-11-19 08:36:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:36:34,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2022-11-19 08:36:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:34,855 INFO L225 Difference]: With dead ends: 25977 [2022-11-19 08:36:34,856 INFO L226 Difference]: Without dead ends: 16544 [2022-11-19 08:36:34,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:36:34,954 INFO L413 NwaCegarLoop]: 2442 mSDtfsCounter, 1715 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:34,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1726 Valid, 4412 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 459 Invalid, 4 Unknown, 0 Unchecked, 10.5s Time] [2022-11-19 08:36:34,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16544 states. [2022-11-19 08:36:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16544 to 16508. [2022-11-19 08:36:36,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16508 states, 10915 states have (on average 1.3691250572606506) internal successors, (14944), 11101 states have internal predecessors, (14944), 4667 states have call successors, (4667), 921 states have call predecessors, (4667), 925 states have return successors, (5502), 4613 states have call predecessors, (5502), 4666 states have call successors, (5502) [2022-11-19 08:36:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16508 states to 16508 states and 25113 transitions. [2022-11-19 08:36:36,213 INFO L78 Accepts]: Start accepts. Automaton has 16508 states and 25113 transitions. Word has length 90 [2022-11-19 08:36:36,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:36,213 INFO L495 AbstractCegarLoop]: Abstraction has 16508 states and 25113 transitions. [2022-11-19 08:36:36,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:36:36,214 INFO L276 IsEmpty]: Start isEmpty. Operand 16508 states and 25113 transitions. [2022-11-19 08:36:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-19 08:36:36,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:36,226 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-19 08:36:36,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:36:36,226 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash -263571525, now seen corresponding path program 1 times [2022-11-19 08:36:36,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:36,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997170446] [2022-11-19 08:36:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:36,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:36:36,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:36,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997170446] [2022-11-19 08:36:36,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997170446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:36:36,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:36:36,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:36:36,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571074459] [2022-11-19 08:36:36,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:36:36,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:36:36,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:36,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:36:36,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:36:36,763 INFO L87 Difference]: Start difference. First operand 16508 states and 25113 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-19 08:36:39,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:42,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:45,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:47,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:51,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:56,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:36:56,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:56,976 INFO L93 Difference]: Finished difference Result 49462 states and 75342 transitions. [2022-11-19 08:36:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:36:56,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 98 [2022-11-19 08:36:56,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:57,252 INFO L225 Difference]: With dead ends: 49462 [2022-11-19 08:36:57,254 INFO L226 Difference]: Without dead ends: 32971 [2022-11-19 08:36:57,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:36:57,371 INFO L413 NwaCegarLoop]: 2396 mSDtfsCounter, 2403 mSDsluCounter, 6561 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 147 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 8957 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:57,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2420 Valid, 8957 Invalid, 1112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [147 Valid, 962 Invalid, 3 Unknown, 0 Unchecked, 18.6s Time] [2022-11-19 08:36:57,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32971 states. [2022-11-19 08:36:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32971 to 32742. [2022-11-19 08:36:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32742 states, 21681 states have (on average 1.3701397537013975) internal successors, (29706), 22092 states have internal predecessors, (29706), 9226 states have call successors, (9226), 1802 states have call predecessors, (9226), 1834 states have return successors, (10997), 9103 states have call predecessors, (10997), 9225 states have call successors, (10997) [2022-11-19 08:36:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32742 states to 32742 states and 49929 transitions. [2022-11-19 08:36:59,996 INFO L78 Accepts]: Start accepts. Automaton has 32742 states and 49929 transitions. Word has length 98 [2022-11-19 08:36:59,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:59,997 INFO L495 AbstractCegarLoop]: Abstraction has 32742 states and 49929 transitions. [2022-11-19 08:36:59,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-19 08:36:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 32742 states and 49929 transitions. [2022-11-19 08:37:00,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-19 08:37:00,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:00,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-19 08:37:00,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:37:00,015 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:00,016 INFO L85 PathProgramCache]: Analyzing trace with hash -983707628, now seen corresponding path program 1 times [2022-11-19 08:37:00,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:37:00,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993939989] [2022-11-19 08:37:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:00,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:37:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:37:00,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:37:00,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993939989] [2022-11-19 08:37:00,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993939989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:00,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:37:00,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:37:00,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138843241] [2022-11-19 08:37:00,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:00,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:37:00,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:37:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:37:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:37:00,699 INFO L87 Difference]: Start difference. First operand 32742 states and 49929 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-19 08:37:03,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:06,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:08,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:10,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:19,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:19,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:19,760 INFO L93 Difference]: Finished difference Result 78422 states and 119596 transitions. [2022-11-19 08:37:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:37:19,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 96 [2022-11-19 08:37:19,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:20,232 INFO L225 Difference]: With dead ends: 78422 [2022-11-19 08:37:20,233 INFO L226 Difference]: Without dead ends: 45697 [2022-11-19 08:37:20,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:37:20,619 INFO L413 NwaCegarLoop]: 2749 mSDtfsCounter, 2394 mSDsluCounter, 7267 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 147 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 10016 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:20,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 10016 Invalid, 1245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [147 Valid, 1094 Invalid, 4 Unknown, 0 Unchecked, 16.3s Time] [2022-11-19 08:37:20,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45697 states. [2022-11-19 08:37:23,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45697 to 45516. [2022-11-19 08:37:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45516 states, 30160 states have (on average 1.3703580901856764) internal successors, (41330), 30720 states have internal predecessors, (41330), 12832 states have call successors, (12832), 2475 states have call predecessors, (12832), 2523 states have return successors, (15273), 12676 states have call predecessors, (15273), 12831 states have call successors, (15273) [2022-11-19 08:37:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45516 states to 45516 states and 69435 transitions. [2022-11-19 08:37:24,681 INFO L78 Accepts]: Start accepts. Automaton has 45516 states and 69435 transitions. Word has length 96 [2022-11-19 08:37:24,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:24,682 INFO L495 AbstractCegarLoop]: Abstraction has 45516 states and 69435 transitions. [2022-11-19 08:37:24,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-19 08:37:24,682 INFO L276 IsEmpty]: Start isEmpty. Operand 45516 states and 69435 transitions. [2022-11-19 08:37:24,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-19 08:37:24,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:24,693 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-19 08:37:24,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:37:24,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:24,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1795625503, now seen corresponding path program 1 times [2022-11-19 08:37:24,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:37:24,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562099824] [2022-11-19 08:37:24,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:24,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:37:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:37:25,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:37:25,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562099824] [2022-11-19 08:37:25,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562099824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:25,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:37:25,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:37:25,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522336830] [2022-11-19 08:37:25,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:25,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:37:25,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:37:25,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:37:25,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:37:25,048 INFO L87 Difference]: Start difference. First operand 45516 states and 69435 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-19 08:37:28,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:30,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:32,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:33,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:36,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:40,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:42,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:44,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:49,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:51,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:53,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:53,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:53,725 INFO L93 Difference]: Finished difference Result 92514 states and 140904 transitions. [2022-11-19 08:37:53,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:37:53,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 97 [2022-11-19 08:37:53,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:54,328 INFO L225 Difference]: With dead ends: 92514 [2022-11-19 08:37:54,328 INFO L226 Difference]: Without dead ends: 47015 [2022-11-19 08:37:54,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:37:54,661 INFO L413 NwaCegarLoop]: 2396 mSDtfsCounter, 2405 mSDsluCounter, 6561 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 147 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 8957 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:54,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2420 Valid, 8957 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 960 Invalid, 7 Unknown, 0 Unchecked, 25.7s Time] [2022-11-19 08:37:54,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47015 states. [2022-11-19 08:37:57,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47015 to 46782. [2022-11-19 08:37:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46782 states, 30954 states have (on average 1.3689345480390256) internal successors, (42374), 31530 states have internal predecessors, (42374), 13154 states have call successors, (13154), 2619 states have call predecessors, (13154), 2673 states have return successors, (15605), 12988 states have call predecessors, (15605), 13153 states have call successors, (15605) [2022-11-19 08:37:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46782 states to 46782 states and 71133 transitions. [2022-11-19 08:37:58,004 INFO L78 Accepts]: Start accepts. Automaton has 46782 states and 71133 transitions. Word has length 97 [2022-11-19 08:37:58,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:58,005 INFO L495 AbstractCegarLoop]: Abstraction has 46782 states and 71133 transitions. [2022-11-19 08:37:58,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-19 08:37:58,006 INFO L276 IsEmpty]: Start isEmpty. Operand 46782 states and 71133 transitions. [2022-11-19 08:37:58,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-19 08:37:58,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:58,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-19 08:37:58,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:37:58,016 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:58,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:58,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1484223576, now seen corresponding path program 1 times [2022-11-19 08:37:58,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:37:58,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035110048] [2022-11-19 08:37:58,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:58,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:37:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:37:58,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:37:58,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035110048] [2022-11-19 08:37:58,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035110048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:58,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:37:58,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:37:58,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053567010] [2022-11-19 08:37:58,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:58,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:37:58,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:37:58,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:37:58,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:37:58,396 INFO L87 Difference]: Start difference. First operand 46782 states and 71133 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-19 08:38:01,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:05,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:07,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:10,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:19,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:19,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:38:19,801 INFO L93 Difference]: Finished difference Result 106502 states and 161948 transitions. [2022-11-19 08:38:19,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:38:19,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 95 [2022-11-19 08:38:19,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:38:20,290 INFO L225 Difference]: With dead ends: 106502 [2022-11-19 08:38:20,290 INFO L226 Difference]: Without dead ends: 58463 [2022-11-19 08:38:20,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:38:20,824 INFO L413 NwaCegarLoop]: 2851 mSDtfsCounter, 2391 mSDsluCounter, 7467 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 147 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 10318 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:38:20,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2408 Valid, 10318 Invalid, 1276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [147 Valid, 1124 Invalid, 5 Unknown, 0 Unchecked, 17.4s Time] [2022-11-19 08:38:20,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58463 states. [2022-11-19 08:38:24,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58463 to 58234. [2022-11-19 08:38:24,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58234 states, 38552 states have (on average 1.370330981531438) internal successors, (52829), 39289 states have internal predecessors, (52829), 16386 states have call successors, (16386), 3237 states have call predecessors, (16386), 3295 states have return successors, (19435), 16147 states have call predecessors, (19435), 16385 states have call successors, (19435) [2022-11-19 08:38:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58234 states to 58234 states and 88650 transitions. [2022-11-19 08:38:25,298 INFO L78 Accepts]: Start accepts. Automaton has 58234 states and 88650 transitions. Word has length 95 [2022-11-19 08:38:25,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:38:25,299 INFO L495 AbstractCegarLoop]: Abstraction has 58234 states and 88650 transitions. [2022-11-19 08:38:25,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-19 08:38:25,299 INFO L276 IsEmpty]: Start isEmpty. Operand 58234 states and 88650 transitions. [2022-11-19 08:38:25,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-19 08:38:25,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:38:25,322 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-19 08:38:25,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:38:25,323 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:38:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:38:25,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1457079755, now seen corresponding path program 1 times [2022-11-19 08:38:25,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:38:25,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330061987] [2022-11-19 08:38:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:38:25,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:38:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:38:25,634 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-19 08:38:25,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:38:25,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330061987] [2022-11-19 08:38:25,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330061987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:38:25,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:38:25,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:38:25,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493260285] [2022-11-19 08:38:25,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:38:25,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:38:25,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:38:25,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:38:25,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:38:25,638 INFO L87 Difference]: Start difference. First operand 58234 states and 88650 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:38:28,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:31,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:33,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:45,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:45,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:38:45,734 INFO L93 Difference]: Finished difference Result 163476 states and 248627 transitions. [2022-11-19 08:38:45,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:38:45,734 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-11-19 08:38:45,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:38:46,841 INFO L225 Difference]: With dead ends: 163476 [2022-11-19 08:38:46,842 INFO L226 Difference]: Without dead ends: 105259 [2022-11-19 08:38:47,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:38:47,348 INFO L413 NwaCegarLoop]: 2977 mSDtfsCounter, 1818 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 4955 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:38:47,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1828 Valid, 4955 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 544 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2022-11-19 08:38:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105259 states. [2022-11-19 08:38:54,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105259 to 105254. [2022-11-19 08:38:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105254 states, 69703 states have (on average 1.3676599285540076) internal successors, (95330), 70828 states have internal predecessors, (95330), 29262 states have call successors, (29262), 6176 states have call predecessors, (29262), 6288 states have return successors, (35237), 28933 states have call predecessors, (35237), 29261 states have call successors, (35237) [2022-11-19 08:38:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105254 states to 105254 states and 159829 transitions. [2022-11-19 08:38:55,715 INFO L78 Accepts]: Start accepts. Automaton has 105254 states and 159829 transitions. Word has length 109 [2022-11-19 08:38:55,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:38:55,716 INFO L495 AbstractCegarLoop]: Abstraction has 105254 states and 159829 transitions. [2022-11-19 08:38:55,716 INFO L496 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 08:38:55,716 INFO L276 IsEmpty]: Start isEmpty. Operand 105254 states and 159829 transitions. [2022-11-19 08:38:55,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-19 08:38:55,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:38:55,729 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:38:55,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:38:55,730 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:38:55,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:38:55,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2005712513, now seen corresponding path program 1 times [2022-11-19 08:38:55,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:38:55,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249372427] [2022-11-19 08:38:55,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:38:55,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:38:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:38:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-19 08:38:56,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:38:56,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249372427] [2022-11-19 08:38:56,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249372427] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:38:56,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610696959] [2022-11-19 08:38:56,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:38:56,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:38:56,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:38:56,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:38:56,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3783e4c-55ad-4120-a03a-de2ebe9ef5cd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:38:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:38:58,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:38:58,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:38:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:38:58,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:38:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-19 08:38:59,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610696959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:38:59,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [251310379] [2022-11-19 08:38:59,407 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2022-11-19 08:38:59,407 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:38:59,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:38:59,419 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:38:59,419 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:39:04,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:39:04,701 INFO L217 Elim1Store]: Index analysis took 675 ms [2022-11-19 08:39:23,736 WARN L233 SmtUtils]: Spent 18.95s on a formula simplification. DAG size of input: 1533 DAG size of output: 1007 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 08:39:23,742 INFO L321 Elim1Store]: treesize reduction 1732, result has 46.4 percent of original size [2022-11-19 08:39:23,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 171 select indices, 171 select index equivalence classes, 14537 disjoint index pairs (out of 14535 index pairs), introduced 171 new quantified variables, introduced 170 case distinctions, treesize of input 862 treesize of output 2022