./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_2ced4375-fbd5-4de0-ad95-a432127a2d66/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ced4375-fbd5-4de0-ad95-a432127a2d66/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_2ced4375-fbd5-4de0-ad95-a432127a2d66/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ced4375-fbd5-4de0-ad95-a432127a2d66/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ced4375-fbd5-4de0-ad95-a432127a2d66/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_2ced4375-fbd5-4de0-ad95-a432127a2d66/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 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 --- 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 08:27:38,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:27:38,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:27:39,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:27:39,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:27:39,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:27:39,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:27:39,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:27:39,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:27:39,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:27:39,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:27:39,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:27:39,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:27:39,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:27:39,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:27:39,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:27:39,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:27:39,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:27:39,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:27:39,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:27:39,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:27:39,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:27:39,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:27:39,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:27:39,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:27:39,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:27:39,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:27:39,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:27:39,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:27:39,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:27:39,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:27:39,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:27:39,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:27:39,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:27:39,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:27:39,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:27:39,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:27:39,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:27:39,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:27:39,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:27:39,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:27:39,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ced4375-fbd5-4de0-ad95-a432127a2d66/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:27:39,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:27:39,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:27:39,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:27:39,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:27:39,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:27:39,116 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:27:39,117 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:27:39,117 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:27:39,117 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:27:39,117 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:27:39,118 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:27:39,118 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:27:39,118 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:27:39,118 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:27:39,118 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:27:39,119 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:27:39,119 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:27:39,119 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:27:39,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:27:39,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:27:39,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:27:39,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:27:39,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:27:39,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:27:39,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:27:39,121 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:27:39,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:27:39,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:27:39,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:27:39,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:27:39,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:27:39,123 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:27:39,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:27:39,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:27:39,123 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:27:39,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:27:39,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:27:39,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:27:39,124 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_2ced4375-fbd5-4de0-ad95-a432127a2d66/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ced4375-fbd5-4de0-ad95-a432127a2d66/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 [2022-11-19 08:27:39,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:27:39,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:27:39,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:27:39,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:27:39,434 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:27:39,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ced4375-fbd5-4de0-ad95-a432127a2d66/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-11-19 08:27:39,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ced4375-fbd5-4de0-ad95-a432127a2d66/bin/utaipan-I9t0OCRTmS/data/4f0b42835/e81f5c06dfa74bf5b94415b24595a1e8/FLAG717834c0b [2022-11-19 08:27:40,540 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:27:40,541 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ced4375-fbd5-4de0-ad95-a432127a2d66/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-11-19 08:27:40,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ced4375-fbd5-4de0-ad95-a432127a2d66/bin/utaipan-I9t0OCRTmS/data/4f0b42835/e81f5c06dfa74bf5b94415b24595a1e8/FLAG717834c0b [2022-11-19 08:27:40,867 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ced4375-fbd5-4de0-ad95-a432127a2d66/bin/utaipan-I9t0OCRTmS/data/4f0b42835/e81f5c06dfa74bf5b94415b24595a1e8 [2022-11-19 08:27:40,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:27:40,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:27:40,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:27:40,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:27:40,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:27:40,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:27:40" (1/1) ... [2022-11-19 08:27:40,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60192623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:40, skipping insertion in model container [2022-11-19 08:27:40,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:27:40" (1/1) ... [2022-11-19 08:27:40,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:27:41,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:27:43,541 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_2ced4375-fbd5-4de0-ad95-a432127a2d66/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2022-11-19 08:27:43,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:27:43,738 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:27:44,248 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_2ced4375-fbd5-4de0-ad95-a432127a2d66/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2022-11-19 08:27:44,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:27:44,383 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:27:44,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:44 WrapperNode [2022-11-19 08:27:44,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:27:44,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:27:44,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:27:44,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:27:44,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:44" (1/1) ... [2022-11-19 08:27:44,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:44" (1/1) ... [2022-11-19 08:27:44,712 INFO L138 Inliner]: procedures = 341, calls = 1917, calls flagged for inlining = 158, calls inlined = 154, statements flattened = 4980 [2022-11-19 08:27:44,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:27:44,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:27:44,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:27:44,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:27:44,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:44" (1/1) ... [2022-11-19 08:27:44,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:44" (1/1) ... [2022-11-19 08:27:44,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:44" (1/1) ... [2022-11-19 08:27:44,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:44" (1/1) ... [2022-11-19 08:27:44,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:44" (1/1) ... [2022-11-19 08:27:44,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:44" (1/1) ... [2022-11-19 08:27:45,040 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:44" (1/1) ... [2022-11-19 08:27:45,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:44" (1/1) ... [2022-11-19 08:27:45,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:27:45,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:27:45,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:27:45,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:27:45,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:44" (1/1) ... [2022-11-19 08:27:45,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:27:45,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ced4375-fbd5-4de0-ad95-a432127a2d66/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:45,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ced4375-fbd5-4de0-ad95-a432127a2d66/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:27:45,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ced4375-fbd5-4de0-ad95-a432127a2d66/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:27:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure queue_iso [2022-11-19 08:27:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_iso [2022-11-19 08:27:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-19 08:27:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-19 08:27:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_channel [2022-11-19 08:27:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_channel [2022-11-19 08:27:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_register [2022-11-19 08:27:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_register [2022-11-19 08:27:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_establish_pp_connection [2022-11-19 08:27:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_establish_pp_connection [2022-11-19 08:27:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 08:27:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 08:27:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-19 08:27:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure node_req [2022-11-19 08:27:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure node_req [2022-11-19 08:27:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:27:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:27:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_lock [2022-11-19 08:27:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_lock [2022-11-19 08:27:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-11-19 08:27:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-11-19 08:27:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-19 08:27:45,216 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-19 08:27:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:27:45,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:27:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_read [2022-11-19 08:27:45,216 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_read [2022-11-19 08:27:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2022-11-19 08:27:45,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2022-11-19 08:27:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 08:27:45,217 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 08:27:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:27:45,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:27:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure pad_operands [2022-11-19 08:27:45,218 INFO L138 BoogieDeclarations]: Found implementation of procedure pad_operands [2022-11-19 08:27:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_set_pids [2022-11-19 08:27:45,218 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_set_pids [2022-11-19 08:27:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_ca_io_poll [2022-11-19 08:27:45,218 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_ca_io_poll [2022-11-19 08:27:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-11-19 08:27:45,219 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-11-19 08:27:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_release [2022-11-19 08:27:45,219 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_release [2022-11-19 08:27:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure clear_operands [2022-11-19 08:27:45,219 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_operands [2022-11-19 08:27:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 08:27:45,220 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 08:27:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_open [2022-11-19 08:27:45,221 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_open [2022-11-19 08:27:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:27:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-11-19 08:27:45,223 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-11-19 08:27:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure avc_write [2022-11-19 08:27:45,224 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_write [2022-11-19 08:27:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure get_opcr [2022-11-19 08:27:45,224 INFO L138 BoogieDeclarations]: Found implementation of procedure get_opcr [2022-11-19 08:27:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:27:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-19 08:27:45,225 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-19 08:27:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure collect_channels [2022-11-19 08:27:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure collect_channels [2022-11-19 08:27:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:27:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:27:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_context_destroy [2022-11-19 08:27:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_context_destroy [2022-11-19 08:27:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_unregister_rc [2022-11-19 08:27:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_unregister_rc [2022-11-19 08:27:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_status [2022-11-19 08:27:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_status [2022-11-19 08:27:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 08:27:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 08:27:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-19 08:27:45,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-19 08:27:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 08:27:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 08:27:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:27:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:27:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-11-19 08:27:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-11-19 08:27:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2022-11-19 08:27:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2022-11-19 08:27:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:27:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-19 08:27:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-19 08:27:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure node_remove [2022-11-19 08:27:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure node_remove [2022-11-19 08:27:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:27:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_unregister [2022-11-19 08:27:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_unregister [2022-11-19 08:27:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure add_pid_filter [2022-11-19 08:27:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pid_filter [2022-11-19 08:27:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:27:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure is_register_rc [2022-11-19 08:27:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure is_register_rc [2022-11-19 08:27:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure dealloc_channel [2022-11-19 08:27:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure dealloc_channel [2022-11-19 08:27:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:27:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:27:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:27:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:27:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-11-19 08:27:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-11-19 08:27:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:27:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2022-11-19 08:27:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2022-11-19 08:27:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure debug_fcp [2022-11-19 08:27:45,237 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_fcp [2022-11-19 08:27:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-11-19 08:27:45,237 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-11-19 08:27:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-19 08:27:45,238 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-19 08:27:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:27:45,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:27:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_net_release [2022-11-19 08:27:45,242 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_net_release [2022-11-19 08:27:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:27:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:27:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:27:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 08:27:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure set_opcr [2022-11-19 08:27:45,251 INFO L138 BoogieDeclarations]: Found implementation of procedure set_opcr [2022-11-19 08:27:45,252 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-19 08:27:45,252 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-19 08:27:45,252 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:27:45,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:27:45,252 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_buffer_destroy [2022-11-19 08:27:45,252 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_buffer_destroy [2022-11-19 08:27:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure node_probe [2022-11-19 08:27:45,253 INFO L138 BoogieDeclarations]: Found implementation of procedure node_probe [2022-11-19 08:27:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure get_ca_object_pos [2022-11-19 08:27:45,253 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ca_object_pos [2022-11-19 08:27:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure node_update [2022-11-19 08:27:45,253 INFO L138 BoogieDeclarations]: Found implementation of procedure node_update [2022-11-19 08:27:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure avc_register_remote_control [2022-11-19 08:27:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_register_remote_control [2022-11-19 08:27:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-11-19 08:27:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-11-19 08:27:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 08:27:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 08:27:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure device_of [2022-11-19 08:27:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure device_of [2022-11-19 08:27:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2022-11-19 08:27:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2022-11-19 08:27:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure fw_core_remove_address_handler [2022-11-19 08:27:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_core_remove_address_handler [2022-11-19 08:27:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:27:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:27:45,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:27:46,163 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:27:46,166 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:28:01,911 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:28:05,856 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:28:05,856 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 08:28:05,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:28:05 BoogieIcfgContainer [2022-11-19 08:28:05,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:28:05,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:28:05,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:28:05,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:28:05,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:27:40" (1/3) ... [2022-11-19 08:28:05,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f7a17f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:28:05, skipping insertion in model container [2022-11-19 08:28:05,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:44" (2/3) ... [2022-11-19 08:28:05,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f7a17f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:28:05, skipping insertion in model container [2022-11-19 08:28:05,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:28:05" (3/3) ... [2022-11-19 08:28:05,870 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-11-19 08:28:05,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:28:05,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:28:05,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:28:05,965 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;@ef2289b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:28:05,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:28:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 823 states, 513 states have (on average 1.3840155945419104) internal successors, (710), 536 states have internal predecessors, (710), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2022-11-19 08:28:05,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 08:28:05,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:05,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:05,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:28:06,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:06,003 INFO L85 PathProgramCache]: Analyzing trace with hash -149625227, now seen corresponding path program 1 times [2022-11-19 08:28:06,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:06,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774419927] [2022-11-19 08:28:06,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:06,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:06,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:06,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:06,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774419927] [2022-11-19 08:28:06,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774419927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:06,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:06,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:28:06,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552708423] [2022-11-19 08:28:06,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:06,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:28:06,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:06,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:28:06,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:28:06,741 INFO L87 Difference]: Start difference. First operand has 823 states, 513 states have (on average 1.3840155945419104) internal successors, (710), 536 states have internal predecessors, (710), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:09,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:11,980 WARN L539 Checker$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 08:28:14,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:16,439 WARN L539 Checker$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 08:28:17,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:21,312 WARN L539 Checker$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 08:28:23,943 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 08:28:24,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:24,008 INFO L93 Difference]: Finished difference Result 2304 states and 3426 transitions. [2022-11-19 08:28:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:28:24,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-19 08:28:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:24,048 INFO L225 Difference]: With dead ends: 2304 [2022-11-19 08:28:24,050 INFO L226 Difference]: Without dead ends: 1476 [2022-11-19 08:28:24,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 08:28:24,062 INFO L413 NwaCegarLoop]: 1240 mSDtfsCounter, 915 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:24,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2238 Invalid, 383 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 376 Invalid, 6 Unknown, 0 Unchecked, 17.0s Time] [2022-11-19 08:28:24,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-19 08:28:24,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1448. [2022-11-19 08:28:24,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 909 states have (on average 1.3784378437843785) internal successors, (1253), 941 states have internal predecessors, (1253), 414 states have call successors, (414), 126 states have call predecessors, (414), 124 states have return successors, (408), 404 states have call predecessors, (408), 405 states have call successors, (408) [2022-11-19 08:28:24,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2075 transitions. [2022-11-19 08:28:24,238 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2075 transitions. Word has length 15 [2022-11-19 08:28:24,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:24,239 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 2075 transitions. [2022-11-19 08:28:24,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:24,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2075 transitions. [2022-11-19 08:28:24,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 08:28:24,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:24,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:24,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:28:24,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:28:24,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:24,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1140025530, now seen corresponding path program 1 times [2022-11-19 08:28:24,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:24,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955626117] [2022-11-19 08:28:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:24,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:24,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955626117] [2022-11-19 08:28:24,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955626117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:24,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:24,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:28:24,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152546536] [2022-11-19 08:28:24,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:24,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:28:24,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:24,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:28:24,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:28:24,548 INFO L87 Difference]: Start difference. First operand 1448 states and 2075 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:28:27,439 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 08:28:29,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:31,495 WARN L539 Checker$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 08:28:34,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:36,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:39,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:42,435 WARN L539 Checker$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 08:28:42,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:42,488 INFO L93 Difference]: Finished difference Result 3533 states and 5050 transitions. [2022-11-19 08:28:42,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:28:42,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-19 08:28:42,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:42,507 INFO L225 Difference]: With dead ends: 3533 [2022-11-19 08:28:42,507 INFO L226 Difference]: Without dead ends: 2086 [2022-11-19 08:28:42,515 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 08:28:42,517 INFO L413 NwaCegarLoop]: 1235 mSDtfsCounter, 888 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:42,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2221 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 376 Invalid, 6 Unknown, 0 Unchecked, 17.8s Time] [2022-11-19 08:28:42,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2022-11-19 08:28:42,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 2079. [2022-11-19 08:28:42,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2079 states, 1308 states have (on average 1.3761467889908257) internal successors, (1800), 1351 states have internal predecessors, (1800), 585 states have call successors, (585), 188 states have call predecessors, (585), 185 states have return successors, (582), 574 states have call predecessors, (582), 576 states have call successors, (582) [2022-11-19 08:28:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 2967 transitions. [2022-11-19 08:28:42,728 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 2967 transitions. Word has length 16 [2022-11-19 08:28:42,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:42,728 INFO L495 AbstractCegarLoop]: Abstraction has 2079 states and 2967 transitions. [2022-11-19 08:28:42,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:28:42,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 2967 transitions. [2022-11-19 08:28:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 08:28:42,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:42,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:42,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:28:42,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:28:42,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash -721914373, now seen corresponding path program 1 times [2022-11-19 08:28:42,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:42,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751714543] [2022-11-19 08:28:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:42,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:42,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:42,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751714543] [2022-11-19 08:28:42,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751714543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:42,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:42,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:28:42,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307220978] [2022-11-19 08:28:42,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:42,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:28:42,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:42,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:28:42,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:28:42,955 INFO L87 Difference]: Start difference. First operand 2079 states and 2967 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:45,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:47,864 WARN L539 Checker$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 08:28:49,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:52,114 WARN L539 Checker$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 08:28:55,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:28:58,075 WARN L539 Checker$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 08:28:58,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:58,468 INFO L93 Difference]: Finished difference Result 3618 states and 5187 transitions. [2022-11-19 08:28:58,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:28:58,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-19 08:28:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:58,496 INFO L225 Difference]: With dead ends: 3618 [2022-11-19 08:28:58,496 INFO L226 Difference]: Without dead ends: 3614 [2022-11-19 08:28:58,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 08:28:58,504 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 905 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:58,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 2048 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 331 Invalid, 6 Unknown, 0 Unchecked, 15.3s Time] [2022-11-19 08:28:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2022-11-19 08:28:58,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3610. [2022-11-19 08:28:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 2287 states have (on average 1.3830345430695234) internal successors, (3163), 2378 states have internal predecessors, (3163), 979 states have call successors, (979), 352 states have call predecessors, (979), 343 states have return successors, (1035), 929 states have call predecessors, (1035), 970 states have call successors, (1035) [2022-11-19 08:28:58,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 5177 transitions. [2022-11-19 08:28:58,702 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 5177 transitions. Word has length 16 [2022-11-19 08:28:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:58,702 INFO L495 AbstractCegarLoop]: Abstraction has 3610 states and 5177 transitions. [2022-11-19 08:28:58,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:28:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 5177 transitions. [2022-11-19 08:28:58,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 08:28:58,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:58,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:58,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:28:58,707 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:28:58,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:58,708 INFO L85 PathProgramCache]: Analyzing trace with hash -904992294, now seen corresponding path program 1 times [2022-11-19 08:28:58,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:58,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918852343] [2022-11-19 08:28:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:58,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:59,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:28:59,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918852343] [2022-11-19 08:28:59,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918852343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:59,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:59,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:28:59,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428676986] [2022-11-19 08:28:59,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:59,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:28:59,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:28:59,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:28:59,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:28:59,042 INFO L87 Difference]: Start difference. First operand 3610 states and 5177 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:29:01,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:03,575 WARN L539 Checker$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 08:29:05,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:08,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:09,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:13,058 WARN L539 Checker$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 08:29:15,645 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 08:29:16,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:16,339 INFO L93 Difference]: Finished difference Result 6038 states and 8668 transitions. [2022-11-19 08:29:16,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:16,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-19 08:29:16,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:16,377 INFO L225 Difference]: With dead ends: 6038 [2022-11-19 08:29:16,377 INFO L226 Difference]: Without dead ends: 6035 [2022-11-19 08:29:16,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 08:29:16,383 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 1071 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:16,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 2221 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 358 Invalid, 6 Unknown, 0 Unchecked, 17.0s Time] [2022-11-19 08:29:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6035 states. [2022-11-19 08:29:16,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6035 to 6026. [2022-11-19 08:29:16,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 3823 states have (on average 1.385037928328538) internal successors, (5295), 3973 states have internal predecessors, (5295), 1630 states have call successors, (1630), 587 states have call predecessors, (1630), 572 states have return successors, (1732), 1549 states have call predecessors, (1732), 1621 states have call successors, (1732) [2022-11-19 08:29:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 8657 transitions. [2022-11-19 08:29:16,811 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 8657 transitions. Word has length 17 [2022-11-19 08:29:16,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:16,812 INFO L495 AbstractCegarLoop]: Abstraction has 6026 states and 8657 transitions. [2022-11-19 08:29:16,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:29:16,812 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 8657 transitions. [2022-11-19 08:29:16,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 08:29:16,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:16,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:16,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:29:16,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:16,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:16,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2009531614, now seen corresponding path program 1 times [2022-11-19 08:29:16,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:16,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250247646] [2022-11-19 08:29:16,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:16,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:29:17,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:17,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250247646] [2022-11-19 08:29:17,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250247646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:17,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:17,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:29:17,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104124269] [2022-11-19 08:29:17,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:17,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:17,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:17,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:17,018 INFO L87 Difference]: Start difference. First operand 6026 states and 8657 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:29:19,625 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 08:29:21,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:23,686 WARN L539 Checker$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 08:29:26,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:30,241 WARN L539 Checker$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 08:29:33,416 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 08:29:33,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:33,586 INFO L93 Difference]: Finished difference Result 11258 states and 16481 transitions. [2022-11-19 08:29:33,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:33,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 08:29:33,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:33,660 INFO L225 Difference]: With dead ends: 11258 [2022-11-19 08:29:33,660 INFO L226 Difference]: Without dead ends: 11254 [2022-11-19 08:29:33,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 08:29:33,673 INFO L413 NwaCegarLoop]: 1226 mSDtfsCounter, 955 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:33,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 2216 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 366 Invalid, 6 Unknown, 0 Unchecked, 16.2s Time] [2022-11-19 08:29:33,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11254 states. [2022-11-19 08:29:34,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11254 to 11246. [2022-11-19 08:29:34,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11246 states, 7163 states have (on average 1.3862906603378473) internal successors, (9930), 7445 states have internal predecessors, (9930), 3015 states have call successors, (3015), 1107 states have call predecessors, (3015), 1067 states have return successors, (3515), 2851 states have call predecessors, (3515), 3006 states have call successors, (3515) [2022-11-19 08:29:34,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11246 states to 11246 states and 16460 transitions. [2022-11-19 08:29:34,396 INFO L78 Accepts]: Start accepts. Automaton has 11246 states and 16460 transitions. Word has length 18 [2022-11-19 08:29:34,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:34,397 INFO L495 AbstractCegarLoop]: Abstraction has 11246 states and 16460 transitions. [2022-11-19 08:29:34,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:29:34,398 INFO L276 IsEmpty]: Start isEmpty. Operand 11246 states and 16460 transitions. [2022-11-19 08:29:34,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 08:29:34,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:34,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:34,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:29:34,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:34,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:34,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2129502883, now seen corresponding path program 1 times [2022-11-19 08:29:34,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:34,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640898547] [2022-11-19 08:29:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:34,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:29:34,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:34,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640898547] [2022-11-19 08:29:34,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640898547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:34,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:34,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:29:34,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73020923] [2022-11-19 08:29:34,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:34,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:34,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:34,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:34,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:34,661 INFO L87 Difference]: Start difference. First operand 11246 states and 16460 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:29:37,287 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 08:29:39,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:41,343 WARN L539 Checker$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 08:29:43,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:47,267 WARN L539 Checker$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 08:29:49,863 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 08:29:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:50,740 INFO L93 Difference]: Finished difference Result 11262 states and 16476 transitions. [2022-11-19 08:29:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:50,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 08:29:50,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:50,811 INFO L225 Difference]: With dead ends: 11262 [2022-11-19 08:29:50,812 INFO L226 Difference]: Without dead ends: 11259 [2022-11-19 08:29:50,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 08:29:50,823 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 1067 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:50,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 2227 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 358 Invalid, 6 Unknown, 0 Unchecked, 15.7s Time] [2022-11-19 08:29:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11259 states. [2022-11-19 08:29:51,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11259 to 11249. [2022-11-19 08:29:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11249 states, 7166 states have (on average 1.3862684900921016) internal successors, (9934), 7448 states have internal predecessors, (9934), 3015 states have call successors, (3015), 1107 states have call predecessors, (3015), 1067 states have return successors, (3515), 2851 states have call predecessors, (3515), 3006 states have call successors, (3515) [2022-11-19 08:29:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11249 states to 11249 states and 16464 transitions. [2022-11-19 08:29:51,494 INFO L78 Accepts]: Start accepts. Automaton has 11249 states and 16464 transitions. Word has length 19 [2022-11-19 08:29:51,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:51,494 INFO L495 AbstractCegarLoop]: Abstraction has 11249 states and 16464 transitions. [2022-11-19 08:29:51,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:29:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand 11249 states and 16464 transitions. [2022-11-19 08:29:51,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 08:29:51,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:51,496 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] [2022-11-19 08:29:51,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:29:51,496 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:51,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:51,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1590548543, now seen corresponding path program 1 times [2022-11-19 08:29:51,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:51,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171815339] [2022-11-19 08:29:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:51,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:29:51,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:51,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171815339] [2022-11-19 08:29:51,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171815339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:51,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:51,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:29:51,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983207452] [2022-11-19 08:29:51,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:51,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:51,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:51,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:51,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:51,727 INFO L87 Difference]: Start difference. First operand 11249 states and 16464 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:29:54,311 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 08:29:56,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:58,370 WARN L539 Checker$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 08:30:00,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:03,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:05,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:08,177 WARN L539 Checker$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 08:30:08,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:08,839 INFO L93 Difference]: Finished difference Result 11263 states and 16476 transitions. [2022-11-19 08:30:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:30:08,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-19 08:30:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:08,888 INFO L225 Difference]: With dead ends: 11263 [2022-11-19 08:30:08,888 INFO L226 Difference]: Without dead ends: 11250 [2022-11-19 08:30:08,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 08:30:08,894 INFO L413 NwaCegarLoop]: 1233 mSDtfsCounter, 1064 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:08,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 2231 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 357 Invalid, 6 Unknown, 0 Unchecked, 16.7s Time] [2022-11-19 08:30:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11250 states. [2022-11-19 08:30:09,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11250 to 11240. [2022-11-19 08:30:09,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11240 states, 7159 states have (on average 1.3859477580667692) internal successors, (9922), 7441 states have internal predecessors, (9922), 3014 states have call successors, (3014), 1106 states have call predecessors, (3014), 1066 states have return successors, (3514), 2850 states have call predecessors, (3514), 3005 states have call successors, (3514) [2022-11-19 08:30:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11240 states to 11240 states and 16450 transitions. [2022-11-19 08:30:09,576 INFO L78 Accepts]: Start accepts. Automaton has 11240 states and 16450 transitions. Word has length 20 [2022-11-19 08:30:09,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:09,576 INFO L495 AbstractCegarLoop]: Abstraction has 11240 states and 16450 transitions. [2022-11-19 08:30:09,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:30:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 11240 states and 16450 transitions. [2022-11-19 08:30:09,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-19 08:30:09,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:09,581 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 08:30:09,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:30:09,581 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash -258368778, now seen corresponding path program 1 times [2022-11-19 08:30:09,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:09,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304203968] [2022-11-19 08:30:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:09,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:30:09,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:09,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304203968] [2022-11-19 08:30:09,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304203968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:09,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:09,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:30:09,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614847228] [2022-11-19 08:30:09,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:09,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:30:09,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:09,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:30:09,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:30:09,977 INFO L87 Difference]: Start difference. First operand 11240 states and 16450 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:30:13,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:15,186 WARN L539 Checker$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 08:30:17,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:19,916 WARN L539 Checker$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 08:30:25,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:28,013 WARN L539 Checker$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 08:30:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:28,230 INFO L93 Difference]: Finished difference Result 20454 states and 29945 transitions. [2022-11-19 08:30:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:30:28,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-19 08:30:28,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:28,287 INFO L225 Difference]: With dead ends: 20454 [2022-11-19 08:30:28,287 INFO L226 Difference]: Without dead ends: 11310 [2022-11-19 08:30:28,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:30:28,413 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 39 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 6 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:28,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2997 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 533 Invalid, 6 Unknown, 0 Unchecked, 17.8s Time] [2022-11-19 08:30:28,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11310 states. [2022-11-19 08:30:29,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11310 to 11254. [2022-11-19 08:30:29,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11254 states, 7173 states have (on average 1.385055067614666) internal successors, (9935), 7455 states have internal predecessors, (9935), 3014 states have call successors, (3014), 1106 states have call predecessors, (3014), 1066 states have return successors, (3514), 2850 states have call predecessors, (3514), 3005 states have call successors, (3514) [2022-11-19 08:30:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11254 states to 11254 states and 16463 transitions. [2022-11-19 08:30:29,138 INFO L78 Accepts]: Start accepts. Automaton has 11254 states and 16463 transitions. Word has length 41 [2022-11-19 08:30:29,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:29,140 INFO L495 AbstractCegarLoop]: Abstraction has 11254 states and 16463 transitions. [2022-11-19 08:30:29,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:30:29,140 INFO L276 IsEmpty]: Start isEmpty. Operand 11254 states and 16463 transitions. [2022-11-19 08:30:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-19 08:30:29,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:29,147 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 08:30:29,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:30:29,148 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1587224658, now seen corresponding path program 1 times [2022-11-19 08:30:29,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:29,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799017530] [2022-11-19 08:30:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:29,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:30:29,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:29,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799017530] [2022-11-19 08:30:29,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799017530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:29,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:29,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:30:29,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462205026] [2022-11-19 08:30:29,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:29,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:30:29,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:29,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:30:29,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:30:29,624 INFO L87 Difference]: Start difference. First operand 11254 states and 16463 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:30:32,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:34,811 WARN L539 Checker$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 08:30:36,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:38,871 WARN L539 Checker$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 08:30:41,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:46,732 WARN L539 Checker$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 08:30:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:47,678 INFO L93 Difference]: Finished difference Result 20402 states and 29858 transitions. [2022-11-19 08:30:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:30:47,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-19 08:30:47,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:47,734 INFO L225 Difference]: With dead ends: 20402 [2022-11-19 08:30:47,734 INFO L226 Difference]: Without dead ends: 11246 [2022-11-19 08:30:47,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:30:47,774 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 1047 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:47,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 3439 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 547 Invalid, 6 Unknown, 0 Unchecked, 17.5s Time] [2022-11-19 08:30:47,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11246 states. [2022-11-19 08:30:48,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11246 to 11236. [2022-11-19 08:30:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11236 states, 7167 states have (on average 1.3848193107297335) internal successors, (9925), 7447 states have internal predecessors, (9925), 3002 states have call successors, (3002), 1106 states have call predecessors, (3002), 1066 states have return successors, (3502), 2840 states have call predecessors, (3502), 2993 states have call successors, (3502) [2022-11-19 08:30:48,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11236 states to 11236 states and 16429 transitions. [2022-11-19 08:30:48,526 INFO L78 Accepts]: Start accepts. Automaton has 11236 states and 16429 transitions. Word has length 43 [2022-11-19 08:30:48,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:48,527 INFO L495 AbstractCegarLoop]: Abstraction has 11236 states and 16429 transitions. [2022-11-19 08:30:48,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 08:30:48,527 INFO L276 IsEmpty]: Start isEmpty. Operand 11236 states and 16429 transitions. [2022-11-19 08:30:48,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-19 08:30:48,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:48,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:30:48,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:30:48,531 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:48,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1289942693, now seen corresponding path program 1 times [2022-11-19 08:30:48,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:48,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467058820] [2022-11-19 08:30:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:48,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:30:48,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:48,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467058820] [2022-11-19 08:30:48,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467058820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:48,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:48,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:30:48,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019882802] [2022-11-19 08:30:48,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:48,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:30:48,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:48,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:30:48,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:48,716 INFO L87 Difference]: Start difference. First operand 11236 states and 16429 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:30:51,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:54,150 WARN L539 Checker$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 08:30:56,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:58,197 WARN L539 Checker$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 08:31:00,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:02,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:05,633 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 08:31:05,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:05,922 INFO L93 Difference]: Finished difference Result 23201 states and 33966 transitions. [2022-11-19 08:31:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:05,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2022-11-19 08:31:05,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:05,978 INFO L225 Difference]: With dead ends: 23201 [2022-11-19 08:31:05,978 INFO L226 Difference]: Without dead ends: 11966 [2022-11-19 08:31:06,017 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 08:31:06,018 INFO L413 NwaCegarLoop]: 1233 mSDtfsCounter, 419 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:06,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 2219 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 6 Unknown, 0 Unchecked, 16.7s Time] [2022-11-19 08:31:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11966 states. [2022-11-19 08:31:06,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11966 to 11827. [2022-11-19 08:31:06,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11827 states, 7767 states have (on average 1.419595725505343) internal successors, (11026), 8082 states have internal predecessors, (11026), 2966 states have call successors, (2966), 1137 states have call predecessors, (2966), 1093 states have return successors, (3362), 2786 states have call predecessors, (3362), 2957 states have call successors, (3362) [2022-11-19 08:31:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11827 states to 11827 states and 17354 transitions. [2022-11-19 08:31:06,708 INFO L78 Accepts]: Start accepts. Automaton has 11827 states and 17354 transitions. Word has length 55 [2022-11-19 08:31:06,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:06,708 INFO L495 AbstractCegarLoop]: Abstraction has 11827 states and 17354 transitions. [2022-11-19 08:31:06,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:31:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand 11827 states and 17354 transitions. [2022-11-19 08:31:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-19 08:31:06,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:06,712 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 08:31:06,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:31:06,713 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:06,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:06,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1494169510, now seen corresponding path program 1 times [2022-11-19 08:31:06,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:06,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236560820] [2022-11-19 08:31:06,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:06,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms