./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:41:27,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:41:27,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:41:28,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:41:28,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:41:28,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:41:28,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:41:28,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:41:28,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:41:28,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:41:28,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:41:28,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:41:28,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:41:28,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:41:28,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:41:28,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:41:28,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:41:28,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:41:28,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:41:28,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:41:28,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:41:28,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:41:28,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:41:28,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:41:28,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:41:28,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:41:28,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:41:28,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:41:28,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:41:28,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:41:28,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:41:28,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:41:28,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:41:28,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:41:28,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:41:28,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:41:28,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:41:28,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:41:28,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:41:28,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:41:28,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:41:28,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:41:28,097 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:41:28,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:41:28,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:41:28,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:41:28,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:41:28,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:41:28,100 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:41:28,100 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:41:28,100 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:41:28,100 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:41:28,101 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:41:28,101 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:41:28,102 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:41:28,102 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:41:28,102 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:41:28,102 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:41:28,102 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:41:28,103 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:41:28,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:41:28,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:41:28,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:41:28,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:41:28,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:41:28,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:41:28,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:41:28,104 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:41:28,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:41:28,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:41:28,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:41:28,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:41:28,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:41:28,106 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:41:28,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:41:28,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:41:28,106 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:41:28,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:41:28,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:41:28,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:41:28,108 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_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 [2022-11-03 02:41:28,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:41:28,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:41:28,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:41:28,405 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:41:28,406 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:41:28,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-11-03 02:41:28,481 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/data/809858bd8/e14fa6ce968c4f9fa9bdbdbad0e83251/FLAGc961c8bd1 [2022-11-03 02:41:29,476 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:41:29,477 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-11-03 02:41:29,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/data/809858bd8/e14fa6ce968c4f9fa9bdbdbad0e83251/FLAGc961c8bd1 [2022-11-03 02:41:29,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/data/809858bd8/e14fa6ce968c4f9fa9bdbdbad0e83251 [2022-11-03 02:41:29,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:41:29,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:41:29,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:41:29,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:41:29,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:41:29,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:41:29" (1/1) ... [2022-11-03 02:41:29,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2baf22f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:29, skipping insertion in model container [2022-11-03 02:41:29,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:41:29" (1/1) ... [2022-11-03 02:41:29,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:41:30,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:41:31,513 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i[231089,231102] [2022-11-03 02:41:31,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:41:31,690 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:41:32,085 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i[231089,231102] [2022-11-03 02:41:32,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:41:32,439 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:41:32,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:32 WrapperNode [2022-11-03 02:41:32,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:41:32,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:41:32,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:41:32,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:41:32,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:32" (1/1) ... [2022-11-03 02:41:32,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:32" (1/1) ... [2022-11-03 02:41:32,934 INFO L138 Inliner]: procedures = 206, calls = 2928, calls flagged for inlining = 89, calls inlined = 81, statements flattened = 7883 [2022-11-03 02:41:32,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:41:32,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:41:32,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:41:32,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:41:32,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:32" (1/1) ... [2022-11-03 02:41:32,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:32" (1/1) ... [2022-11-03 02:41:33,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:32" (1/1) ... [2022-11-03 02:41:33,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:32" (1/1) ... [2022-11-03 02:41:33,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:32" (1/1) ... [2022-11-03 02:41:33,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:32" (1/1) ... [2022-11-03 02:41:33,424 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:32" (1/1) ... [2022-11-03 02:41:33,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:32" (1/1) ... [2022-11-03 02:41:33,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:41:33,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:41:33,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:41:33,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:41:33,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:32" (1/1) ... [2022-11-03 02:41:33,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:41:33,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:41:33,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:41:33,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7054a411-e56d-4f9f-852c-a600dee947ff/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:41:33,601 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2022-11-03 02:41:33,602 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2022-11-03 02:41:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-11-03 02:41:33,602 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-11-03 02:41:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2022-11-03 02:41:33,602 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2022-11-03 02:41:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-11-03 02:41:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-11-03 02:41:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2022-11-03 02:41:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2022-11-03 02:41:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:41:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:41:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2022-11-03 02:41:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2022-11-03 02:41:33,604 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2022-11-03 02:41:33,604 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2022-11-03 02:41:33,604 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2022-11-03 02:41:33,604 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2022-11-03 02:41:33,604 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2022-11-03 02:41:33,604 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2022-11-03 02:41:33,605 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:41:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:41:33,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:41:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:41:33,605 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-03 02:41:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-03 02:41:33,605 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2022-11-03 02:41:33,606 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2022-11-03 02:41:33,606 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:41:33,606 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:41:33,606 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-11-03 02:41:33,607 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-11-03 02:41:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:41:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2022-11-03 02:41:33,607 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2022-11-03 02:41:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-11-03 02:41:33,608 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-11-03 02:41:33,608 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-11-03 02:41:33,608 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-11-03 02:41:33,608 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-03 02:41:33,608 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-03 02:41:33,609 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2022-11-03 02:41:33,609 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2022-11-03 02:41:33,609 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-11-03 02:41:33,609 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-11-03 02:41:33,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:41:33,610 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2022-11-03 02:41:33,610 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2022-11-03 02:41:33,610 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-03 02:41:33,611 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-03 02:41:33,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:41:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:41:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-11-03 02:41:33,612 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-11-03 02:41:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 02:41:33,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 02:41:33,612 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2022-11-03 02:41:33,612 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2022-11-03 02:41:33,613 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-11-03 02:41:33,613 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-11-03 02:41:33,613 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:41:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:41:33,614 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2022-11-03 02:41:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2022-11-03 02:41:33,614 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2022-11-03 02:41:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2022-11-03 02:41:33,614 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2022-11-03 02:41:33,614 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2022-11-03 02:41:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-11-03 02:41:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-11-03 02:41:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 02:41:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 02:41:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2022-11-03 02:41:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2022-11-03 02:41:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2022-11-03 02:41:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2022-11-03 02:41:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-11-03 02:41:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-11-03 02:41:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-11-03 02:41:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-11-03 02:41:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:41:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-03 02:41:33,618 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-03 02:41:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-03 02:41:33,618 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-03 02:41:33,619 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2022-11-03 02:41:33,619 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2022-11-03 02:41:33,619 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-11-03 02:41:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-11-03 02:41:33,620 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2022-11-03 02:41:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2022-11-03 02:41:33,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:41:33,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-11-03 02:41:33,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-11-03 02:41:33,621 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-11-03 02:41:33,622 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-11-03 02:41:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:41:33,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:41:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-11-03 02:41:33,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-11-03 02:41:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2022-11-03 02:41:33,622 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2022-11-03 02:41:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2022-11-03 02:41:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2022-11-03 02:41:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:41:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-11-03 02:41:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-11-03 02:41:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:41:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2022-11-03 02:41:33,624 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2022-11-03 02:41:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:41:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-11-03 02:41:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-11-03 02:41:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2022-11-03 02:41:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2022-11-03 02:41:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2022-11-03 02:41:33,631 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2022-11-03 02:41:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-11-03 02:41:33,631 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-11-03 02:41:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:41:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-11-03 02:41:33,638 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-11-03 02:41:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:41:33,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:41:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:41:33,638 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:41:34,660 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:41:34,665 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:41:42,890 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:41:46,852 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:41:46,853 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:41:46,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:41:46 BoogieIcfgContainer [2022-11-03 02:41:46,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:41:46,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:41:46,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:41:46,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:41:46,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:41:29" (1/3) ... [2022-11-03 02:41:46,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52658a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:41:46, skipping insertion in model container [2022-11-03 02:41:46,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:32" (2/3) ... [2022-11-03 02:41:46,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52658a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:41:46, skipping insertion in model container [2022-11-03 02:41:46,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:41:46" (3/3) ... [2022-11-03 02:41:46,870 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2022-11-03 02:41:46,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:41:46,890 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:41:47,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:41:47,070 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;@7ca539da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:41:47,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:41:47,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 1588 states, 1102 states have (on average 1.5544464609800364) internal successors, (1713), 1113 states have internal predecessors, (1713), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) [2022-11-03 02:41:47,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 02:41:47,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:47,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:41:47,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:47,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:47,111 INFO L85 PathProgramCache]: Analyzing trace with hash 949156419, now seen corresponding path program 1 times [2022-11-03 02:41:47,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:41:47,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672176190] [2022-11-03 02:41:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:47,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:41:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:41:48,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:41:48,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672176190] [2022-11-03 02:41:48,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672176190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:48,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:48,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:41:48,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584547319] [2022-11-03 02:41:48,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:48,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:41:48,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:41:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:41:48,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:41:48,364 INFO L87 Difference]: Start difference. First operand has 1588 states, 1102 states have (on average 1.5544464609800364) internal successors, (1713), 1113 states have internal predecessors, (1713), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:41:49,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:49,652 INFO L93 Difference]: Finished difference Result 4751 states and 8225 transitions. [2022-11-03 02:41:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:41:49,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-11-03 02:41:49,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:49,746 INFO L225 Difference]: With dead ends: 4751 [2022-11-03 02:41:49,747 INFO L226 Difference]: Without dead ends: 3160 [2022-11-03 02:41:49,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:41:49,810 INFO L413 NwaCegarLoop]: 2763 mSDtfsCounter, 2531 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 5103 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:49,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2531 Valid, 5103 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:41:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3160 states. [2022-11-03 02:41:50,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3160 to 3134. [2022-11-03 02:41:50,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3134 states, 2181 states have (on average 1.5529573590096286) internal successors, (3387), 2190 states have internal predecessors, (3387), 841 states have call successors, (841), 112 states have call predecessors, (841), 111 states have return successors, (832), 832 states have call predecessors, (832), 832 states have call successors, (832) [2022-11-03 02:41:50,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 5060 transitions. [2022-11-03 02:41:50,146 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 5060 transitions. Word has length 31 [2022-11-03 02:41:50,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:50,147 INFO L495 AbstractCegarLoop]: Abstraction has 3134 states and 5060 transitions. [2022-11-03 02:41:50,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:41:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 5060 transitions. [2022-11-03 02:41:50,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:41:50,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:50,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:41:50,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:41:50,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:50,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:50,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1606644239, now seen corresponding path program 1 times [2022-11-03 02:41:50,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:41:50,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080468435] [2022-11-03 02:41:50,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:50,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:41:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:41:50,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:41:50,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080468435] [2022-11-03 02:41:50,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080468435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:50,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:50,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:41:50,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837728515] [2022-11-03 02:41:50,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:50,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:41:50,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:41:50,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:41:50,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:41:50,869 INFO L87 Difference]: Start difference. First operand 3134 states and 5060 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:41:51,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:51,988 INFO L93 Difference]: Finished difference Result 9383 states and 15148 transitions. [2022-11-03 02:41:51,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:41:51,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-03 02:41:51,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:52,267 INFO L225 Difference]: With dead ends: 9383 [2022-11-03 02:41:52,267 INFO L226 Difference]: Without dead ends: 6250 [2022-11-03 02:41:52,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:41:52,307 INFO L413 NwaCegarLoop]: 2801 mSDtfsCounter, 2531 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 5140 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:52,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2531 Valid, 5140 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:41:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2022-11-03 02:41:52,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 6224. [2022-11-03 02:41:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 4335 states have (on average 1.552479815455594) internal successors, (6730), 4344 states have internal predecessors, (6730), 1667 states have call successors, (1667), 222 states have call predecessors, (1667), 221 states have return successors, (1658), 1658 states have call predecessors, (1658), 1658 states have call successors, (1658) [2022-11-03 02:41:52,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 10055 transitions. [2022-11-03 02:41:52,640 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 10055 transitions. Word has length 29 [2022-11-03 02:41:52,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:52,641 INFO L495 AbstractCegarLoop]: Abstraction has 6224 states and 10055 transitions. [2022-11-03 02:41:52,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:41:52,641 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 10055 transitions. [2022-11-03 02:41:52,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 02:41:52,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:52,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:41:52,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:41:52,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:52,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:52,661 INFO L85 PathProgramCache]: Analyzing trace with hash -423390410, now seen corresponding path program 1 times [2022-11-03 02:41:52,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:41:52,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832946257] [2022-11-03 02:41:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:52,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:41:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:41:53,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:41:53,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832946257] [2022-11-03 02:41:53,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832946257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:53,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:53,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:41:53,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653016161] [2022-11-03 02:41:53,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:53,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:41:53,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:41:53,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:41:53,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:41:53,243 INFO L87 Difference]: Start difference. First operand 6224 states and 10055 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:41:54,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:54,566 INFO L93 Difference]: Finished difference Result 18653 states and 30133 transitions. [2022-11-03 02:41:54,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:41:54,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-03 02:41:54,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:54,669 INFO L225 Difference]: With dead ends: 18653 [2022-11-03 02:41:54,669 INFO L226 Difference]: Without dead ends: 12430 [2022-11-03 02:41:54,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:41:54,730 INFO L413 NwaCegarLoop]: 3071 mSDtfsCounter, 2541 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2541 SdHoareTripleChecker+Valid, 5413 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:54,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2541 Valid, 5413 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:41:54,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12430 states. [2022-11-03 02:41:55,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12430 to 12404. [2022-11-03 02:41:55,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12404 states, 8643 states have (on average 1.5520074048362837) internal successors, (13414), 8652 states have internal predecessors, (13414), 3319 states have call successors, (3319), 442 states have call predecessors, (3319), 441 states have return successors, (3310), 3310 states have call predecessors, (3310), 3310 states have call successors, (3310) [2022-11-03 02:41:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12404 states to 12404 states and 20043 transitions. [2022-11-03 02:41:55,550 INFO L78 Accepts]: Start accepts. Automaton has 12404 states and 20043 transitions. Word has length 25 [2022-11-03 02:41:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:55,551 INFO L495 AbstractCegarLoop]: Abstraction has 12404 states and 20043 transitions. [2022-11-03 02:41:55,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:41:55,551 INFO L276 IsEmpty]: Start isEmpty. Operand 12404 states and 20043 transitions. [2022-11-03 02:41:55,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 02:41:55,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:55,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:41:55,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:41:55,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:55,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:55,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1219371380, now seen corresponding path program 1 times [2022-11-03 02:41:55,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:41:55,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288200226] [2022-11-03 02:41:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:55,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:41:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:41:56,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:41:56,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288200226] [2022-11-03 02:41:56,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288200226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:56,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:56,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:41:56,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466598197] [2022-11-03 02:41:56,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:56,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:41:56,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:41:56,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:41:56,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:41:56,122 INFO L87 Difference]: Start difference. First operand 12404 states and 20043 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:41:58,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:58,359 INFO L93 Difference]: Finished difference Result 37145 states and 60013 transitions. [2022-11-03 02:41:58,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:41:58,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-11-03 02:41:58,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:58,551 INFO L225 Difference]: With dead ends: 37145 [2022-11-03 02:41:58,551 INFO L226 Difference]: Without dead ends: 24742 [2022-11-03 02:41:58,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:41:58,641 INFO L413 NwaCegarLoop]: 3063 mSDtfsCounter, 2532 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2532 SdHoareTripleChecker+Valid, 5402 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:58,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2532 Valid, 5402 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:41:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24742 states. [2022-11-03 02:42:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24742 to 24716. [2022-11-03 02:42:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24716 states, 17223 states have (on average 1.5512976833304302) internal successors, (26718), 17232 states have internal predecessors, (26718), 6611 states have call successors, (6611), 882 states have call predecessors, (6611), 881 states have return successors, (6602), 6602 states have call predecessors, (6602), 6602 states have call successors, (6602) [2022-11-03 02:42:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24716 states to 24716 states and 39931 transitions. [2022-11-03 02:42:00,466 INFO L78 Accepts]: Start accepts. Automaton has 24716 states and 39931 transitions. Word has length 28 [2022-11-03 02:42:00,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:00,466 INFO L495 AbstractCegarLoop]: Abstraction has 24716 states and 39931 transitions. [2022-11-03 02:42:00,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:42:00,468 INFO L276 IsEmpty]: Start isEmpty. Operand 24716 states and 39931 transitions. [2022-11-03 02:42:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:42:00,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:00,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:00,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:42:00,471 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:00,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1046381638, now seen corresponding path program 1 times [2022-11-03 02:42:00,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:42:00,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195135120] [2022-11-03 02:42:00,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:00,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:42:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:01,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:42:01,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195135120] [2022-11-03 02:42:01,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195135120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:01,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:01,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:42:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690653930] [2022-11-03 02:42:01,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:01,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:42:01,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:42:01,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:42:01,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:42:01,070 INFO L87 Difference]: Start difference. First operand 24716 states and 39931 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:42:03,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:03,669 INFO L93 Difference]: Finished difference Result 74081 states and 119677 transitions. [2022-11-03 02:42:03,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:42:03,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-03 02:42:03,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:04,192 INFO L225 Difference]: With dead ends: 74081 [2022-11-03 02:42:04,192 INFO L226 Difference]: Without dead ends: 49366 [2022-11-03 02:42:04,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:42:04,326 INFO L413 NwaCegarLoop]: 3055 mSDtfsCounter, 2537 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2537 SdHoareTripleChecker+Valid, 5397 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:04,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2537 Valid, 5397 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:42:04,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49366 states. [2022-11-03 02:42:06,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49366 to 49340. [2022-11-03 02:42:06,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49340 states, 34383 states have (on average 1.550708198819184) internal successors, (53318), 34392 states have internal predecessors, (53318), 13195 states have call successors, (13195), 1762 states have call predecessors, (13195), 1761 states have return successors, (13186), 13186 states have call predecessors, (13186), 13186 states have call successors, (13186) [2022-11-03 02:42:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49340 states to 49340 states and 79699 transitions. [2022-11-03 02:42:07,633 INFO L78 Accepts]: Start accepts. Automaton has 49340 states and 79699 transitions. Word has length 29 [2022-11-03 02:42:07,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:07,633 INFO L495 AbstractCegarLoop]: Abstraction has 49340 states and 79699 transitions. [2022-11-03 02:42:07,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:42:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 49340 states and 79699 transitions. [2022-11-03 02:42:07,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:42:07,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:07,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:07,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:42:07,637 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:07,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:07,637 INFO L85 PathProgramCache]: Analyzing trace with hash -502477926, now seen corresponding path program 1 times [2022-11-03 02:42:07,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:42:07,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821657466] [2022-11-03 02:42:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:07,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:42:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:08,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:42:08,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821657466] [2022-11-03 02:42:08,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821657466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:08,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:08,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:42:08,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614999864] [2022-11-03 02:42:08,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:08,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:42:08,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:42:08,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:42:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:42:08,416 INFO L87 Difference]: Start difference. First operand 49340 states and 79699 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:42:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:12,590 INFO L93 Difference]: Finished difference Result 147889 states and 238869 transitions. [2022-11-03 02:42:12,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:42:12,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-03 02:42:12,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:13,409 INFO L225 Difference]: With dead ends: 147889 [2022-11-03 02:42:13,410 INFO L226 Difference]: Without dead ends: 98550 [2022-11-03 02:42:13,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:42:13,785 INFO L413 NwaCegarLoop]: 3369 mSDtfsCounter, 2540 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 5711 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:13,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2540 Valid, 5711 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:42:13,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98550 states. [2022-11-03 02:42:18,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98550 to 98524. [2022-11-03 02:42:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98524 states, 68655 states have (on average 1.5500983176753331) internal successors, (106422), 68664 states have internal predecessors, (106422), 26347 states have call successors, (26347), 3522 states have call predecessors, (26347), 3521 states have return successors, (26338), 26338 states have call predecessors, (26338), 26338 states have call successors, (26338) [2022-11-03 02:42:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98524 states to 98524 states and 159107 transitions. [2022-11-03 02:42:18,915 INFO L78 Accepts]: Start accepts. Automaton has 98524 states and 159107 transitions. Word has length 26 [2022-11-03 02:42:18,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:18,916 INFO L495 AbstractCegarLoop]: Abstraction has 98524 states and 159107 transitions. [2022-11-03 02:42:18,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:42:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 98524 states and 159107 transitions. [2022-11-03 02:42:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:42:18,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:18,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:18,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:42:18,918 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:18,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:18,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1408955877, now seen corresponding path program 1 times [2022-11-03 02:42:18,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:42:18,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452334182] [2022-11-03 02:42:18,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:18,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:42:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:19,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:19,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:42:19,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452334182] [2022-11-03 02:42:19,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452334182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:19,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:19,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:42:19,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414628671] [2022-11-03 02:42:19,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:19,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:42:19,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:42:19,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:42:19,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:42:19,909 INFO L87 Difference]: Start difference. First operand 98524 states and 159107 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:42:27,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:27,274 INFO L93 Difference]: Finished difference Result 295057 states and 476421 transitions. [2022-11-03 02:42:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:42:27,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2022-11-03 02:42:27,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:28,759 INFO L225 Difference]: With dead ends: 295057 [2022-11-03 02:42:28,760 INFO L226 Difference]: Without dead ends: 196534 [2022-11-03 02:42:29,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:42:29,638 INFO L413 NwaCegarLoop]: 3393 mSDtfsCounter, 2525 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 5732 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:29,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2525 Valid, 5732 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:42:29,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196534 states.