./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/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_055e457e-8ada-43d7-aa6f-ac297c5f3d55/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/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_055e457e-8ada-43d7-aa6f-ac297c5f3d55/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 08b5f37246b5db2704912edf2e599b38e840680a1db95349b6967c3c4646cf90 --- 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 08:11:16,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:11:16,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:11:16,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:11:16,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:11:16,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:11:16,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:11:16,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:11:16,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:11:16,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:11:16,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:11:16,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:11:16,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:11:16,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:11:16,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:11:16,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:11:16,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:11:16,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:11:16,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:11:16,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:11:16,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:11:16,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:11:16,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:11:16,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:11:16,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:11:16,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:11:16,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:11:16,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:11:16,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:11:16,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:11:16,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:11:16,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:11:16,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:11:16,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:11:16,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:11:16,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:11:16,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:11:16,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:11:16,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:11:16,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:11:16,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:11:16,105 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:11:16,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:11:16,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:11:16,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:11:16,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:11:16,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:11:16,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:11:16,142 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:11:16,142 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:11:16,143 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:11:16,143 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:11:16,144 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:11:16,144 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:11:16,144 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:11:16,144 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:11:16,145 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:11:16,145 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:11:16,145 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:11:16,145 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:11:16,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:11:16,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:11:16,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:11:16,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:11:16,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:11:16,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:11:16,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:11:16,149 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:11:16,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:11:16,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:11:16,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:11:16,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:11:16,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:11:16,150 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:11:16,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:11:16,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:11:16,151 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:11:16,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:11:16,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:11:16,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:11:16,151 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_055e457e-8ada-43d7-aa6f-ac297c5f3d55/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08b5f37246b5db2704912edf2e599b38e840680a1db95349b6967c3c4646cf90 [2022-11-19 08:11:16,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:11:16,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:11:16,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:11:16,486 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:11:16,487 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:11:16,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i [2022-11-19 08:11:16,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/bin/utaipan-I9t0OCRTmS/data/dafaf9fcd/23726efe545d4cdcbd79cb3d794acdec/FLAG08092edf6 [2022-11-19 08:11:17,575 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:11:17,576 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i [2022-11-19 08:11:17,637 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/bin/utaipan-I9t0OCRTmS/data/dafaf9fcd/23726efe545d4cdcbd79cb3d794acdec/FLAG08092edf6 [2022-11-19 08:11:17,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/bin/utaipan-I9t0OCRTmS/data/dafaf9fcd/23726efe545d4cdcbd79cb3d794acdec [2022-11-19 08:11:17,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:11:17,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:11:17,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:11:17,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:11:17,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:11:17,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:11:17" (1/1) ... [2022-11-19 08:11:17,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d538b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:17, skipping insertion in model container [2022-11-19 08:11:17,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:11:17" (1/1) ... [2022-11-19 08:11:17,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:11:18,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:11:21,247 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_055e457e-8ada-43d7-aa6f-ac297c5f3d55/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i[370344,370357] [2022-11-19 08:11:21,468 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-19 08:11:21,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:11:21,502 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:11:22,135 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_055e457e-8ada-43d7-aa6f-ac297c5f3d55/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i[370344,370357] [2022-11-19 08:11:22,151 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-19 08:11:22,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:11:22,302 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:11:22,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:22 WrapperNode [2022-11-19 08:11:22,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:11:22,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:11:22,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:11:22,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:11:22,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:22" (1/1) ... [2022-11-19 08:11:22,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:22" (1/1) ... [2022-11-19 08:11:22,835 INFO L138 Inliner]: procedures = 381, calls = 4812, calls flagged for inlining = 148, calls inlined = 144, statements flattened = 12092 [2022-11-19 08:11:22,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:11:22,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:11:22,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:11:22,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:11:22,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:22" (1/1) ... [2022-11-19 08:11:22,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:22" (1/1) ... [2022-11-19 08:11:22,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:22" (1/1) ... [2022-11-19 08:11:22,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:22" (1/1) ... [2022-11-19 08:11:23,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:22" (1/1) ... [2022-11-19 08:11:23,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:22" (1/1) ... [2022-11-19 08:11:23,277 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:22" (1/1) ... [2022-11-19 08:11:23,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:22" (1/1) ... [2022-11-19 08:11:23,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:11:23,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:11:23,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:11:23,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:11:23,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:22" (1/1) ... [2022-11-19 08:11:23,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:11:23,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:11:23,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:11:23,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055e457e-8ada-43d7-aa6f-ac297c5f3d55/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:11:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure single_unlink_async [2022-11-19 08:11:23,472 INFO L138 BoogieDeclarations]: Found implementation of procedure single_unlink_async [2022-11-19 08:11:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_poll_PSS [2022-11-19 08:11:23,472 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_poll_PSS [2022-11-19 08:11:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure end_unlink_async [2022-11-19 08:11:23,472 INFO L138 BoogieDeclarations]: Found implementation of procedure end_unlink_async [2022-11-19 08:11:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_status_buf [2022-11-19 08:11:23,473 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_status_buf [2022-11-19 08:11:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-11-19 08:11:23,473 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-11-19 08:11:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qh_alloc [2022-11-19 08:11:23,473 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qh_alloc [2022-11-19 08:11:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:11:23,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:11:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:11:23,474 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:11:23,474 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_urb_dequeue [2022-11-19 08:11:23,474 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_urb_dequeue [2022-11-19 08:11:23,474 INFO L130 BoogieDeclarations]: Found specification of procedure turn_on_io_watchdog [2022-11-19 08:11:23,474 INFO L138 BoogieDeclarations]: Found implementation of procedure turn_on_io_watchdog [2022-11-19 08:11:23,474 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2022-11-19 08:11:23,474 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2022-11-19 08:11:23,475 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_to_hcd [2022-11-19 08:11:23,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_to_hcd [2022-11-19 08:11:23,475 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-19 08:11:23,475 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-19 08:11:23,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:11:23,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:11:23,475 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpup [2022-11-19 08:11:23,475 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpup [2022-11-19 08:11:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure usb_disabled [2022-11-19 08:11:23,476 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_disabled [2022-11-19 08:11:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure qh_destroy [2022-11-19 08:11:23,476 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_destroy [2022-11-19 08:11:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure end_free_itds [2022-11-19 08:11:23,477 INFO L138 BoogieDeclarations]: Found implementation of procedure end_free_itds [2022-11-19 08:11:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 08:11:23,477 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 08:11:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:11:23,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:11:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hcd_remove [2022-11-19 08:11:23,477 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hcd_remove [2022-11-19 08:11:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_next_shadow [2022-11-19 08:11:23,478 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_next_shadow [2022-11-19 08:11:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_poll_ASS [2022-11-19 08:11:23,478 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_poll_ASS [2022-11-19 08:11:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_buffer [2022-11-19 08:11:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_buffer [2022-11-19 08:11:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_run [2022-11-19 08:11:23,480 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_run [2022-11-19 08:11:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 08:11:23,480 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 08:11:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:11:23,480 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:11:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_intr [2022-11-19 08:11:23,481 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_intr [2022-11-19 08:11:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:11:23,481 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:11:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hub_status_data [2022-11-19 08:11:23,482 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hub_status_data [2022-11-19 08:11:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_set_command_bit [2022-11-19 08:11:23,482 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_set_command_bit [2022-11-19 08:11:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure debug_output [2022-11-19 08:11:23,483 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_output [2022-11-19 08:11:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2022-11-19 08:11:23,483 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2022-11-19 08:11:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 08:11:23,483 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 08:11:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qtd_init [2022-11-19 08:11:23,484 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qtd_init [2022-11-19 08:11:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 08:11:23,484 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 08:11:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2022-11-19 08:11:23,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2022-11-19 08:11:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_relinquish_port [2022-11-19 08:11:23,485 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_relinquish_port [2022-11-19 08:11:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_fotg210 [2022-11-19 08:11:23,485 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_fotg210 [2022-11-19 08:11:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_irq [2022-11-19 08:11:23,485 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_irq [2022-11-19 08:11:23,486 INFO L130 BoogieDeclarations]: Found specification of procedure start_free_itds [2022-11-19 08:11:23,486 INFO L138 BoogieDeclarations]: Found implementation of procedure start_free_itds [2022-11-19 08:11:23,486 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-19 08:11:23,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-19 08:11:23,486 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_stop [2022-11-19 08:11:23,487 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_stop [2022-11-19 08:11:23,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:11:23,487 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 08:11:23,488 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 08:11:23,488 INFO L130 BoogieDeclarations]: Found specification of procedure bus_to_hcd [2022-11-19 08:11:23,488 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_to_hcd [2022-11-19 08:11:23,489 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_clear_command_bit [2022-11-19 08:11:23,489 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_clear_command_bit [2022-11-19 08:11:23,489 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_list_free [2022-11-19 08:11:23,489 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_list_free [2022-11-19 08:11:23,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:11:23,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 08:11:23,489 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2022-11-19 08:11:23,490 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2022-11-19 08:11:23,490 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-11-19 08:11:23,490 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-11-19 08:11:23,490 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-19 08:11:23,490 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-19 08:11:23,490 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_fill [2022-11-19 08:11:23,491 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_fill [2022-11-19 08:11:23,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 08:11:23,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 08:11:23,491 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_readl [2022-11-19 08:11:23,492 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_readl [2022-11-19 08:11:23,494 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 08:11:23,495 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 08:11:23,495 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2022-11-19 08:11:23,495 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2022-11-19 08:11:23,495 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_clear_tt_buffer [2022-11-19 08:11:23,497 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_clear_tt_buffer [2022-11-19 08:11:23,498 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-19 08:11:23,498 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-19 08:11:23,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:11:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:11:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_writel [2022-11-19 08:11:23,503 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_writel [2022-11-19 08:11:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_command_buf [2022-11-19 08:11:23,503 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_command_buf [2022-11-19 08:11:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure start_iaa_cycle [2022-11-19 08:11:23,503 INFO L138 BoogieDeclarations]: Found implementation of procedure start_iaa_cycle [2022-11-19 08:11:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_halt [2022-11-19 08:11:23,504 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_halt [2022-11-19 08:11:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-11-19 08:11:23,592 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-11-19 08:11:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hcd_probe [2022-11-19 08:11:23,592 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hcd_probe [2022-11-19 08:11:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_usecs [2022-11-19 08:11:23,592 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_usecs [2022-11-19 08:11:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 08:11:23,592 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 08:11:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_endpoint_disable [2022-11-19 08:11:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_endpoint_disable [2022-11-19 08:11:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-19 08:11:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-19 08:11:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 08:11:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 08:11:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:11:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:11:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 08:11:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 08:11:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure qh_completions [2022-11-19 08:11:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_completions [2022-11-19 08:11:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_mem_cleanup [2022-11-19 08:11:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_mem_cleanup [2022-11-19 08:11:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_handle_controller_death [2022-11-19 08:11:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_handle_controller_death [2022-11-19 08:11:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 08:11:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 08:11:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure disable_periodic [2022-11-19 08:11:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_periodic [2022-11-19 08:11:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_hcd [2022-11-19 08:11:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_hcd [2022-11-19 08:11:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure enable_periodic [2022-11-19 08:11:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_periodic [2022-11-19 08:11:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_port_speed [2022-11-19 08:11:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_port_speed [2022-11-19 08:11:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure qh_lines [2022-11-19 08:11:23,595 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_lines [2022-11-19 08:11:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-19 08:11:23,595 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-19 08:11:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_shutdown [2022-11-19 08:11:23,595 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_shutdown [2022-11-19 08:11:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-19 08:11:23,595 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-19 08:11:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_handle_intr_unlinks [2022-11-19 08:11:23,595 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_handle_intr_unlinks [2022-11-19 08:11:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_enable_event [2022-11-19 08:11:23,595 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_enable_event [2022-11-19 08:11:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qtd_free [2022-11-19 08:11:23,596 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qtd_free [2022-11-19 08:11:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_read_frame_index [2022-11-19 08:11:23,596 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_read_frame_index [2022-11-19 08:11:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_unlink_urb_from_ep [2022-11-19 08:11:23,596 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_unlink_urb_from_ep [2022-11-19 08:11:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:11:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_quiesce [2022-11-19 08:11:23,596 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_quiesce [2022-11-19 08:11:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_debug_buffer [2022-11-19 08:11:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_debug_buffer [2022-11-19 08:11:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure qh_schedule [2022-11-19 08:11:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_schedule [2022-11-19 08:11:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_get_frame [2022-11-19 08:11:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_get_frame [2022-11-19 08:11:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure check_intr_schedule [2022-11-19 08:11:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure check_intr_schedule [2022-11-19 08:11:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2022-11-19 08:11:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2022-11-19 08:11:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 08:11:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 08:11:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_silence_controller [2022-11-19 08:11:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_silence_controller [2022-11-19 08:11:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-19 08:11:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-19 08:11:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:11:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:11:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_clear_tt_buffer_complete [2022-11-19 08:11:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_clear_tt_buffer_complete [2022-11-19 08:11:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-19 08:11:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-19 08:11:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-19 08:11:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-19 08:11:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:11:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_endpoint_reset [2022-11-19 08:11:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_endpoint_reset [2022-11-19 08:11:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_link_urb_to_ep [2022-11-19 08:11:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_link_urb_to_ep [2022-11-19 08:11:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-19 08:11:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-19 08:11:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:11:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:11:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure iso_sched_free [2022-11-19 08:11:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure iso_sched_free [2022-11-19 08:11:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 08:11:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 08:11:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:11:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_reset [2022-11-19 08:11:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_reset [2022-11-19 08:11:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 08:11:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 08:11:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-19 08:11:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-19 08:11:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:11:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure usb_calc_bus_time [2022-11-19 08:11:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_calc_bus_time [2022-11-19 08:11:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_cancel [2022-11-19 08:11:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_cancel [2022-11-19 08:11:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure qh_link_async [2022-11-19 08:11:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_link_async [2022-11-19 08:11:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:11:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qtd_alloc [2022-11-19 08:11:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qtd_alloc [2022-11-19 08:11:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_work [2022-11-19 08:11:23,608 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_work [2022-11-19 08:11:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure qh_urb_transaction [2022-11-19 08:11:23,608 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_urb_transaction [2022-11-19 08:11:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-19 08:11:23,608 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-19 08:11:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:11:23,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:11:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hub_control [2022-11-19 08:11:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hub_control [2022-11-19 08:11:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure check_period [2022-11-19 08:11:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure check_period [2022-11-19 08:11:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2022-11-19 08:11:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2022-11-19 08:11:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2022-11-19 08:11:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2022-11-19 08:11:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 08:11:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 08:11:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure shadow_next_periodic [2022-11-19 08:11:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure shadow_next_periodic [2022-11-19 08:11:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-19 08:11:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-19 08:11:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpu [2022-11-19 08:11:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpu [2022-11-19 08:11:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure handshake [2022-11-19 08:11:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure handshake [2022-11-19 08:11:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure debug_close [2022-11-19 08:11:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_close [2022-11-19 08:11:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_debug_buffer [2022-11-19 08:11:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_debug_buffer [2022-11-19 08:11:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure qh_refresh [2022-11-19 08:11:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_refresh [2022-11-19 08:11:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 08:11:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 08:11:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_urb_enqueue [2022-11-19 08:11:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_urb_enqueue [2022-11-19 08:11:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_async [2022-11-19 08:11:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_async [2022-11-19 08:11:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-19 08:11:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-19 08:11:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_hc32 [2022-11-19 08:11:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_hc32 [2022-11-19 08:11:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 08:11:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 08:11:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-19 08:11:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-19 08:11:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 08:11:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 08:11:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 08:11:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 08:11:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure qh_append_tds [2022-11-19 08:11:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_append_tds [2022-11-19 08:11:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:11:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_fotg210_init [2022-11-19 08:11:23,615 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_fotg210_init [2022-11-19 08:11:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_port_handed_over [2022-11-19 08:11:23,615 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_port_handed_over [2022-11-19 08:11:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_urb_done [2022-11-19 08:11:23,615 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_urb_done [2022-11-19 08:11:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:11:23,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:11:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2022-11-19 08:11:23,615 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2022-11-19 08:11:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 08:11:23,616 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 08:11:24,977 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:11:24,991 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:11:25,876 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:11:37,255 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_platform_driver_unregister_16_returnLabel#1: assume { :end_inline_ldv_platform_driver_unregister_16 } true; [2022-11-19 08:11:37,556 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:11:42,210 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:11:42,210 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 08:11:42,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:11:42 BoogieIcfgContainer [2022-11-19 08:11:42,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:11:42,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:11:42,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:11:42,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:11:42,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:11:17" (1/3) ... [2022-11-19 08:11:42,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4045f58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:11:42, skipping insertion in model container [2022-11-19 08:11:42,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:11:22" (2/3) ... [2022-11-19 08:11:42,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4045f58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:11:42, skipping insertion in model container [2022-11-19 08:11:42,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:11:42" (3/3) ... [2022-11-19 08:11:42,232 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i [2022-11-19 08:11:42,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:11:42,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:11:42,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:11:42,412 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;@7a9d9464, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:11:42,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:11:42,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 2981 states, 1853 states have (on average 1.3405288720992985) internal successors, (2484), 1942 states have internal predecessors, (2484), 983 states have call successors, (983), 144 states have call predecessors, (983), 143 states have return successors, (975), 956 states have call predecessors, (975), 975 states have call successors, (975) [2022-11-19 08:11:42,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-19 08:11:42,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:42,473 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:42,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:42,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:42,481 INFO L85 PathProgramCache]: Analyzing trace with hash -621672407, now seen corresponding path program 1 times [2022-11-19 08:11:42,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:42,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667686947] [2022-11-19 08:11:42,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:42,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-19 08:11:44,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:44,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667686947] [2022-11-19 08:11:44,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667686947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:44,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:44,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:11:44,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810641553] [2022-11-19 08:11:44,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:44,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:11:44,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:44,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:11:44,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:44,116 INFO L87 Difference]: Start difference. First operand has 2981 states, 1853 states have (on average 1.3405288720992985) internal successors, (2484), 1942 states have internal predecessors, (2484), 983 states have call successors, (983), 144 states have call predecessors, (983), 143 states have return successors, (975), 956 states have call predecessors, (975), 975 states have call successors, (975) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-19 08:11:46,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:11:51,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:51,066 INFO L93 Difference]: Finished difference Result 8796 states and 13121 transitions. [2022-11-19 08:11:51,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:11:51,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 296 [2022-11-19 08:11:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:51,141 INFO L225 Difference]: With dead ends: 8796 [2022-11-19 08:11:51,141 INFO L226 Difference]: Without dead ends: 5837 [2022-11-19 08:11:51,169 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 08:11:51,173 INFO L413 NwaCegarLoop]: 4986 mSDtfsCounter, 4304 mSDsluCounter, 4033 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4304 SdHoareTripleChecker+Valid, 9019 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:51,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4304 Valid, 9019 Invalid, 793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 791 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-19 08:11:51,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5837 states. [2022-11-19 08:11:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5837 to 5822. [2022-11-19 08:11:51,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5822 states, 3633 states have (on average 1.335810624827966) internal successors, (4853), 3788 states have internal predecessors, (4853), 1905 states have call successors, (1905), 284 states have call predecessors, (1905), 283 states have return successors, (1899), 1859 states have call predecessors, (1899), 1899 states have call successors, (1899) [2022-11-19 08:11:51,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5822 states to 5822 states and 8657 transitions. [2022-11-19 08:11:51,886 INFO L78 Accepts]: Start accepts. Automaton has 5822 states and 8657 transitions. Word has length 296 [2022-11-19 08:11:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:11:51,888 INFO L495 AbstractCegarLoop]: Abstraction has 5822 states and 8657 transitions. [2022-11-19 08:11:51,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-19 08:11:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5822 states and 8657 transitions. [2022-11-19 08:11:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-19 08:11:51,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:51,895 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:51,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:11:51,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:11:51,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:51,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1225165412, now seen corresponding path program 1 times [2022-11-19 08:11:51,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:51,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783051533] [2022-11-19 08:11:51,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:51,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-19 08:11:52,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:52,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783051533] [2022-11-19 08:11:52,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783051533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:52,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:52,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:11:52,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205366800] [2022-11-19 08:11:52,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:52,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:11:52,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:52,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:11:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:11:52,834 INFO L87 Difference]: Start difference. First operand 5822 states and 8657 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-19 08:11:54,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:11:59,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:11:59,154 INFO L93 Difference]: Finished difference Result 17297 states and 25716 transitions. [2022-11-19 08:11:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:11:59,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 297 [2022-11-19 08:11:59,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:11:59,396 INFO L225 Difference]: With dead ends: 17297 [2022-11-19 08:11:59,396 INFO L226 Difference]: Without dead ends: 11536 [2022-11-19 08:11:59,433 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 08:11:59,435 INFO L413 NwaCegarLoop]: 4974 mSDtfsCounter, 4264 mSDsluCounter, 3999 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 8973 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:11:59,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4264 Valid, 8973 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 790 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-19 08:11:59,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11536 states. [2022-11-19 08:12:00,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11536 to 11520. [2022-11-19 08:12:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11520 states, 7193 states have (on average 1.336299179758098) internal successors, (9612), 7500 states have internal predecessors, (9612), 3761 states have call successors, (3761), 566 states have call predecessors, (3761), 565 states have return successors, (3755), 3673 states have call predecessors, (3755), 3755 states have call successors, (3755) [2022-11-19 08:12:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11520 states to 11520 states and 17128 transitions. [2022-11-19 08:12:00,401 INFO L78 Accepts]: Start accepts. Automaton has 11520 states and 17128 transitions. Word has length 297 [2022-11-19 08:12:00,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:00,406 INFO L495 AbstractCegarLoop]: Abstraction has 11520 states and 17128 transitions. [2022-11-19 08:12:00,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-19 08:12:00,407 INFO L276 IsEmpty]: Start isEmpty. Operand 11520 states and 17128 transitions. [2022-11-19 08:12:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-19 08:12:00,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:00,416 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:00,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:12:00,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:00,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:00,422 INFO L85 PathProgramCache]: Analyzing trace with hash -594156467, now seen corresponding path program 1 times [2022-11-19 08:12:00,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:00,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394779183] [2022-11-19 08:12:00,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:00,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-19 08:12:01,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:01,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394779183] [2022-11-19 08:12:01,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394779183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:01,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:01,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:01,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260536932] [2022-11-19 08:12:01,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:01,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:01,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:01,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:01,562 INFO L87 Difference]: Start difference. First operand 11520 states and 17128 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-19 08:12:03,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:12:08,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:08,444 INFO L93 Difference]: Finished difference Result 34031 states and 50578 transitions. [2022-11-19 08:12:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:08,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 302 [2022-11-19 08:12:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:08,586 INFO L225 Difference]: With dead ends: 34031 [2022-11-19 08:12:08,586 INFO L226 Difference]: Without dead ends: 22572 [2022-11-19 08:12:08,650 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 08:12:08,651 INFO L413 NwaCegarLoop]: 5265 mSDtfsCounter, 4238 mSDsluCounter, 3998 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4238 SdHoareTripleChecker+Valid, 9263 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:08,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4238 Valid, 9263 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 839 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-19 08:12:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22572 states. [2022-11-19 08:12:10,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22572 to 22558. [2022-11-19 08:12:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22558 states, 14094 states have (on average 1.3363842769973038) internal successors, (18835), 14688 states have internal predecessors, (18835), 7345 states have call successors, (7345), 1119 states have call predecessors, (7345), 1118 states have return successors, (7339), 7184 states have call predecessors, (7339), 7339 states have call successors, (7339) [2022-11-19 08:12:10,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22558 states to 22558 states and 33519 transitions. [2022-11-19 08:12:10,600 INFO L78 Accepts]: Start accepts. Automaton has 22558 states and 33519 transitions. Word has length 302 [2022-11-19 08:12:10,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:10,601 INFO L495 AbstractCegarLoop]: Abstraction has 22558 states and 33519 transitions. [2022-11-19 08:12:10,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-19 08:12:10,601 INFO L276 IsEmpty]: Start isEmpty. Operand 22558 states and 33519 transitions. [2022-11-19 08:12:10,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-19 08:12:10,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:10,608 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:10,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:12:10,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:10,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:10,609 INFO L85 PathProgramCache]: Analyzing trace with hash 380372539, now seen corresponding path program 1 times [2022-11-19 08:12:10,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:10,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224878187] [2022-11-19 08:12:10,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:10,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-19 08:12:11,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:11,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224878187] [2022-11-19 08:12:11,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224878187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:11,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:11,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:11,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468360614] [2022-11-19 08:12:11,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:11,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:11,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:11,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:11,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:11,499 INFO L87 Difference]: Start difference. First operand 22558 states and 33519 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:12:13,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:12:15,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:15,718 INFO L93 Difference]: Finished difference Result 22560 states and 33520 transitions. [2022-11-19 08:12:15,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:15,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 304 [2022-11-19 08:12:15,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:15,848 INFO L225 Difference]: With dead ends: 22560 [2022-11-19 08:12:15,848 INFO L226 Difference]: Without dead ends: 22557 [2022-11-19 08:12:15,865 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 08:12:15,866 INFO L413 NwaCegarLoop]: 4010 mSDtfsCounter, 4325 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:15,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4325 Valid, 4010 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 387 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-11-19 08:12:15,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22557 states. [2022-11-19 08:12:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22557 to 22557. [2022-11-19 08:12:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22557 states, 14094 states have (on average 1.336313324819072) internal successors, (18834), 14687 states have internal predecessors, (18834), 7344 states have call successors, (7344), 1119 states have call predecessors, (7344), 1118 states have return successors, (7339), 7184 states have call predecessors, (7339), 7339 states have call successors, (7339) [2022-11-19 08:12:17,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22557 states to 22557 states and 33517 transitions. [2022-11-19 08:12:17,776 INFO L78 Accepts]: Start accepts. Automaton has 22557 states and 33517 transitions. Word has length 304 [2022-11-19 08:12:17,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:17,779 INFO L495 AbstractCegarLoop]: Abstraction has 22557 states and 33517 transitions. [2022-11-19 08:12:17,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:12:17,779 INFO L276 IsEmpty]: Start isEmpty. Operand 22557 states and 33517 transitions. [2022-11-19 08:12:17,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-19 08:12:17,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:17,786 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:17,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:12:17,786 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:17,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:17,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1095024594, now seen corresponding path program 1 times [2022-11-19 08:12:17,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:17,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872718104] [2022-11-19 08:12:17,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:17,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-19 08:12:18,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:18,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872718104] [2022-11-19 08:12:18,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872718104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:18,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:18,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:18,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575675472] [2022-11-19 08:12:18,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:18,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:18,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:18,508 INFO L87 Difference]: Start difference. First operand 22557 states and 33517 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:12:20,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:12:22,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:22,782 INFO L93 Difference]: Finished difference Result 22559 states and 33518 transitions. [2022-11-19 08:12:22,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:22,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 305 [2022-11-19 08:12:22,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:22,886 INFO L225 Difference]: With dead ends: 22559 [2022-11-19 08:12:22,886 INFO L226 Difference]: Without dead ends: 22556 [2022-11-19 08:12:22,900 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 08:12:22,901 INFO L413 NwaCegarLoop]: 4008 mSDtfsCounter, 4322 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4322 SdHoareTripleChecker+Valid, 4008 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:22,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4322 Valid, 4008 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 387 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-19 08:12:22,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22556 states. [2022-11-19 08:12:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22556 to 22556. [2022-11-19 08:12:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22556 states, 14094 states have (on average 1.3362423726408401) internal successors, (18833), 14686 states have internal predecessors, (18833), 7343 states have call successors, (7343), 1119 states have call predecessors, (7343), 1118 states have return successors, (7339), 7184 states have call predecessors, (7339), 7339 states have call successors, (7339) [2022-11-19 08:12:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22556 states to 22556 states and 33515 transitions. [2022-11-19 08:12:24,997 INFO L78 Accepts]: Start accepts. Automaton has 22556 states and 33515 transitions. Word has length 305 [2022-11-19 08:12:24,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:24,998 INFO L495 AbstractCegarLoop]: Abstraction has 22556 states and 33515 transitions. [2022-11-19 08:12:24,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:12:24,998 INFO L276 IsEmpty]: Start isEmpty. Operand 22556 states and 33515 transitions. [2022-11-19 08:12:25,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-19 08:12:25,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:25,004 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:25,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:12:25,004 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:25,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:25,005 INFO L85 PathProgramCache]: Analyzing trace with hash 412309406, now seen corresponding path program 1 times [2022-11-19 08:12:25,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:25,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907009601] [2022-11-19 08:12:25,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:25,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-19 08:12:25,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:25,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907009601] [2022-11-19 08:12:25,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907009601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:25,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:25,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:25,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843677862] [2022-11-19 08:12:25,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:25,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:25,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:25,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:25,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:25,761 INFO L87 Difference]: Start difference. First operand 22556 states and 33515 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:12:27,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:12:31,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:31,173 INFO L93 Difference]: Finished difference Result 31597 states and 46208 transitions. [2022-11-19 08:12:31,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:31,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 306 [2022-11-19 08:12:31,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:31,306 INFO L225 Difference]: With dead ends: 31597 [2022-11-19 08:12:31,306 INFO L226 Difference]: Without dead ends: 31593 [2022-11-19 08:12:31,321 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 08:12:31,321 INFO L413 NwaCegarLoop]: 4392 mSDtfsCounter, 3933 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3933 SdHoareTripleChecker+Valid, 6362 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:31,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3933 Valid, 6362 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 615 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 08:12:31,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31593 states. [2022-11-19 08:12:33,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31593 to 31591. [2022-11-19 08:12:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31591 states, 19701 states have (on average 1.323283082077052) internal successors, (26070), 20494 states have internal predecessors, (26070), 10064 states have call successors, (10064), 1826 states have call predecessors, (10064), 1825 states have return successors, (10062), 9879 states have call predecessors, (10062), 10062 states have call successors, (10062) [2022-11-19 08:12:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31591 states to 31591 states and 46196 transitions. [2022-11-19 08:12:33,498 INFO L78 Accepts]: Start accepts. Automaton has 31591 states and 46196 transitions. Word has length 306 [2022-11-19 08:12:33,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:33,499 INFO L495 AbstractCegarLoop]: Abstraction has 31591 states and 46196 transitions. [2022-11-19 08:12:33,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:12:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 31591 states and 46196 transitions. [2022-11-19 08:12:33,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-19 08:12:33,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:33,502 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:33,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:12:33,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:33,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:33,503 INFO L85 PathProgramCache]: Analyzing trace with hash -104971983, now seen corresponding path program 1 times [2022-11-19 08:12:33,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:33,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782284970] [2022-11-19 08:12:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:33,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-19 08:12:34,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:34,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782284970] [2022-11-19 08:12:34,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782284970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:34,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:34,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:34,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273860728] [2022-11-19 08:12:34,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:34,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:34,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:34,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:34,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:34,460 INFO L87 Difference]: Start difference. First operand 31591 states and 46196 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:12:35,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:12:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:38,504 INFO L93 Difference]: Finished difference Result 31593 states and 46197 transitions. [2022-11-19 08:12:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:38,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 307 [2022-11-19 08:12:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:38,627 INFO L225 Difference]: With dead ends: 31593 [2022-11-19 08:12:38,627 INFO L226 Difference]: Without dead ends: 31536 [2022-11-19 08:12:38,642 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 08:12:38,643 INFO L413 NwaCegarLoop]: 4003 mSDtfsCounter, 4314 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4314 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:38,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4314 Valid, 4003 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 08:12:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31536 states. [2022-11-19 08:12:40,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31536 to 31536. [2022-11-19 08:12:40,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31536 states, 19679 states have (on average 1.32283144468723) internal successors, (26032), 20464 states have internal predecessors, (26032), 10039 states have call successors, (10039), 1818 states have call predecessors, (10039), 1817 states have return successors, (10038), 9862 states have call predecessors, (10038), 10038 states have call successors, (10038) [2022-11-19 08:12:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31536 states to 31536 states and 46109 transitions. [2022-11-19 08:12:40,822 INFO L78 Accepts]: Start accepts. Automaton has 31536 states and 46109 transitions. Word has length 307 [2022-11-19 08:12:40,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:40,823 INFO L495 AbstractCegarLoop]: Abstraction has 31536 states and 46109 transitions. [2022-11-19 08:12:40,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:12:40,824 INFO L276 IsEmpty]: Start isEmpty. Operand 31536 states and 46109 transitions. [2022-11-19 08:12:40,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-19 08:12:40,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:40,853 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:40,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:12:40,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:40,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:40,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1900608712, now seen corresponding path program 1 times [2022-11-19 08:12:40,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:40,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731594840] [2022-11-19 08:12:40,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:40,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3174 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2022-11-19 08:12:42,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:42,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731594840] [2022-11-19 08:12:42,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731594840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:42,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:42,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:12:42,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238214772] [2022-11-19 08:12:42,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:42,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:12:42,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:42,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:12:42,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:12:42,174 INFO L87 Difference]: Start difference. First operand 31536 states and 46109 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-19 08:12:44,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:12:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:49,476 INFO L93 Difference]: Finished difference Result 63035 states and 92161 transitions. [2022-11-19 08:12:49,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:12:49,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 457 [2022-11-19 08:12:49,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:49,595 INFO L225 Difference]: With dead ends: 63035 [2022-11-19 08:12:49,595 INFO L226 Difference]: Without dead ends: 31536 [2022-11-19 08:12:49,713 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 08:12:49,714 INFO L413 NwaCegarLoop]: 3988 mSDtfsCounter, 3 mSDsluCounter, 7971 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11959 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:49,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11959 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1162 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-19 08:12:49,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31536 states. [2022-11-19 08:12:51,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31536 to 31536. [2022-11-19 08:12:51,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31536 states, 19679 states have (on average 1.3224249199654454) internal successors, (26024), 20464 states have internal predecessors, (26024), 10039 states have call successors, (10039), 1818 states have call predecessors, (10039), 1817 states have return successors, (10038), 9862 states have call predecessors, (10038), 10038 states have call successors, (10038) [2022-11-19 08:12:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31536 states to 31536 states and 46101 transitions. [2022-11-19 08:12:51,723 INFO L78 Accepts]: Start accepts. Automaton has 31536 states and 46101 transitions. Word has length 457 [2022-11-19 08:12:51,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:51,724 INFO L495 AbstractCegarLoop]: Abstraction has 31536 states and 46101 transitions. [2022-11-19 08:12:51,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-19 08:12:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 31536 states and 46101 transitions. [2022-11-19 08:12:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-11-19 08:12:51,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:51,753 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:12:51,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:12:51,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1396219680, now seen corresponding path program 1 times [2022-11-19 08:12:51,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:51,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096328896] [2022-11-19 08:12:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:51,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3174 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2022-11-19 08:12:52,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:52,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096328896] [2022-11-19 08:12:52,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096328896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:52,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:52,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:52,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414767966] [2022-11-19 08:12:52,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:52,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:52,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:52,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:52,879 INFO L87 Difference]: Start difference. First operand 31536 states and 46101 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-19 08:12:54,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:13:00,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:00,980 INFO L93 Difference]: Finished difference Result 77969 states and 114016 transitions. [2022-11-19 08:13:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:13:00,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 485 [2022-11-19 08:13:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:01,158 INFO L225 Difference]: With dead ends: 77969 [2022-11-19 08:13:01,158 INFO L226 Difference]: Without dead ends: 46494 [2022-11-19 08:13:01,249 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 08:13:01,249 INFO L413 NwaCegarLoop]: 7520 mSDtfsCounter, 4254 mSDsluCounter, 3963 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4254 SdHoareTripleChecker+Valid, 11483 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:01,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4254 Valid, 11483 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1112 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-19 08:13:01,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46494 states. [2022-11-19 08:13:04,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46494 to 46489. [2022-11-19 08:13:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46489 states, 29027 states have (on average 1.3228029076377166) internal successors, (38397), 30184 states have internal predecessors, (38397), 14792 states have call successors, (14792), 2670 states have call predecessors, (14792), 2669 states have return successors, (14791), 14532 states have call predecessors, (14791), 14791 states have call successors, (14791) [2022-11-19 08:13:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46489 states to 46489 states and 67980 transitions. [2022-11-19 08:13:04,732 INFO L78 Accepts]: Start accepts. Automaton has 46489 states and 67980 transitions. Word has length 485 [2022-11-19 08:13:04,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:04,733 INFO L495 AbstractCegarLoop]: Abstraction has 46489 states and 67980 transitions. [2022-11-19 08:13:04,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-19 08:13:04,734 INFO L276 IsEmpty]: Start isEmpty. Operand 46489 states and 67980 transitions. [2022-11-19 08:13:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-19 08:13:04,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:04,777 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:13:04,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:13:04,778 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:04,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1219265199, now seen corresponding path program 1 times [2022-11-19 08:13:04,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:04,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577396414] [2022-11-19 08:13:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:04,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:05,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2022-11-19 08:13:05,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:05,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577396414] [2022-11-19 08:13:05,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577396414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:13:05,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:13:05,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:13:05,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211105827] [2022-11-19 08:13:05,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:13:05,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:13:05,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:05,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:13:05,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:13:05,999 INFO L87 Difference]: Start difference. First operand 46489 states and 67980 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-19 08:13:08,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []