./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 4e7fbc69 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_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW/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_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 15:06:20,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:06:20,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:06:20,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:06:20,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:06:20,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:06:20,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:06:20,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:06:20,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:06:20,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:06:20,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:06:20,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:06:20,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:06:20,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:06:20,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:06:20,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:06:20,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:06:20,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:06:20,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:06:20,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:06:20,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:06:20,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:06:20,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:06:20,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:06:20,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:06:20,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:06:20,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:06:20,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:06:20,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:06:20,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:06:20,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:06:20,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:06:20,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:06:20,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:06:20,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:06:20,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:06:20,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:06:20,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:06:20,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:06:20,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:06:20,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:06:20,360 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:06:20,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:06:20,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:06:20,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:06:20,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:06:20,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:06:20,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:06:20,389 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:06:20,389 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:06:20,389 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:06:20,389 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:06:20,390 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:06:20,390 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:06:20,390 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:06:20,390 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:06:20,391 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:06:20,391 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:06:20,391 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:06:20,391 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:06:20,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:06:20,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:06:20,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:06:20,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:06:20,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:06:20,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:06:20,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:06:20,393 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:06:20,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:06:20,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:06:20,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:06:20,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:06:20,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:06:20,395 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:06:20,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:06:20,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:06:20,395 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:06:20,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:06:20,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:06:20,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:06:20,396 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_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08b5f37246b5db2704912edf2e599b38e840680a1db95349b6967c3c4646cf90 [2022-11-23 15:06:20,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:06:20,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:06:20,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:06:20,767 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:06:20,768 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:06:20,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW/../../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 [2022-11-23 15:06:23,955 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:06:24,723 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:06:24,723 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82c407a0-9bee-46dc-ac3b-64226684793e/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 [2022-11-23 15:06:24,763 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW/data/31984bbe9/7388e7e32796411796cb781022f4ce51/FLAGb0b54d13f [2022-11-23 15:06:24,780 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW/data/31984bbe9/7388e7e32796411796cb781022f4ce51 [2022-11-23 15:06:24,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:06:24,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:06:24,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:06:24,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:06:24,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:06:24,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:06:24" (1/1) ... [2022-11-23 15:06:24,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe5d32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:24, skipping insertion in model container [2022-11-23 15:06:24,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:06:24" (1/1) ... [2022-11-23 15:06:24,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:06:24,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:06:28,145 WARN L237 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_82c407a0-9bee-46dc-ac3b-64226684793e/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] [2022-11-23 15:06:28,396 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-23 15:06:28,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:06:28,454 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:06:29,182 WARN L237 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_82c407a0-9bee-46dc-ac3b-64226684793e/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] [2022-11-23 15:06:29,200 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-23 15:06:29,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:06:29,303 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:06:29,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:29 WrapperNode [2022-11-23 15:06:29,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:06:29,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:06:29,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:06:29,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:06:29,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:29" (1/1) ... [2022-11-23 15:06:29,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:29" (1/1) ... [2022-11-23 15:06:29,818 INFO L138 Inliner]: procedures = 381, calls = 4810, calls flagged for inlining = 148, calls inlined = 144, statements flattened = 11586 [2022-11-23 15:06:29,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:06:29,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:06:29,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:06:29,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:06:29,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:29" (1/1) ... [2022-11-23 15:06:29,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:29" (1/1) ... [2022-11-23 15:06:29,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:29" (1/1) ... [2022-11-23 15:06:29,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:29" (1/1) ... [2022-11-23 15:06:30,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:29" (1/1) ... [2022-11-23 15:06:30,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:29" (1/1) ... [2022-11-23 15:06:30,355 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:29" (1/1) ... [2022-11-23 15:06:30,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:29" (1/1) ... [2022-11-23 15:06:30,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:06:30,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:06:30,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:06:30,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:06:30,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:29" (1/1) ... [2022-11-23 15:06:30,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:06:30,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:06:30,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:06:30,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82c407a0-9bee-46dc-ac3b-64226684793e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:06:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure single_unlink_async [2022-11-23 15:06:30,558 INFO L138 BoogieDeclarations]: Found implementation of procedure single_unlink_async [2022-11-23 15:06:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_poll_PSS [2022-11-23 15:06:30,559 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_poll_PSS [2022-11-23 15:06:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure end_unlink_async [2022-11-23 15:06:30,559 INFO L138 BoogieDeclarations]: Found implementation of procedure end_unlink_async [2022-11-23 15:06:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_status_buf [2022-11-23 15:06:30,559 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_status_buf [2022-11-23 15:06:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-11-23 15:06:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-11-23 15:06:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qh_alloc [2022-11-23 15:06:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qh_alloc [2022-11-23 15:06:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:06:30,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:06:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:06:30,561 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:06:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_urb_dequeue [2022-11-23 15:06:30,561 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_urb_dequeue [2022-11-23 15:06:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure turn_on_io_watchdog [2022-11-23 15:06:30,562 INFO L138 BoogieDeclarations]: Found implementation of procedure turn_on_io_watchdog [2022-11-23 15:06:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2022-11-23 15:06:30,562 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2022-11-23 15:06:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_to_hcd [2022-11-23 15:06:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_to_hcd [2022-11-23 15:06:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-23 15:06:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-23 15:06:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:06:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:06:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpup [2022-11-23 15:06:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpup [2022-11-23 15:06:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure usb_disabled [2022-11-23 15:06:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_disabled [2022-11-23 15:06:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure qh_destroy [2022-11-23 15:06:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_destroy [2022-11-23 15:06:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure end_free_itds [2022-11-23 15:06:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure end_free_itds [2022-11-23 15:06:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 15:06:30,566 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 15:06:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 15:06:30,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 15:06:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hcd_remove [2022-11-23 15:06:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hcd_remove [2022-11-23 15:06:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_next_shadow [2022-11-23 15:06:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_next_shadow [2022-11-23 15:06:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_poll_ASS [2022-11-23 15:06:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_poll_ASS [2022-11-23 15:06:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_buffer [2022-11-23 15:06:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_buffer [2022-11-23 15:06:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_run [2022-11-23 15:06:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_run [2022-11-23 15:06:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 15:06:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 15:06:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:06:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:06:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_intr [2022-11-23 15:06:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_intr [2022-11-23 15:06:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:06:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:06:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hub_status_data [2022-11-23 15:06:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hub_status_data [2022-11-23 15:06:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_set_command_bit [2022-11-23 15:06:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_set_command_bit [2022-11-23 15:06:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure debug_output [2022-11-23 15:06:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_output [2022-11-23 15:06:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2022-11-23 15:06:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2022-11-23 15:06:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 15:06:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 15:06:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qtd_init [2022-11-23 15:06:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qtd_init [2022-11-23 15:06:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 15:06:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 15:06:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2022-11-23 15:06:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2022-11-23 15:06:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_relinquish_port [2022-11-23 15:06:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_relinquish_port [2022-11-23 15:06:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_fotg210 [2022-11-23 15:06:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_fotg210 [2022-11-23 15:06:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_irq [2022-11-23 15:06:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_irq [2022-11-23 15:06:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure start_free_itds [2022-11-23 15:06:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure start_free_itds [2022-11-23 15:06:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-23 15:06:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-23 15:06:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_stop [2022-11-23 15:06:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_stop [2022-11-23 15:06:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:06:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 15:06:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 15:06:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure bus_to_hcd [2022-11-23 15:06:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_to_hcd [2022-11-23 15:06:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_clear_command_bit [2022-11-23 15:06:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_clear_command_bit [2022-11-23 15:06:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_list_free [2022-11-23 15:06:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_list_free [2022-11-23 15:06:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:06:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 15:06:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2022-11-23 15:06:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2022-11-23 15:06:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-11-23 15:06:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-11-23 15:06:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-23 15:06:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-23 15:06:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_fill [2022-11-23 15:06:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_fill [2022-11-23 15:06:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:06:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:06:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_readl [2022-11-23 15:06:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_readl [2022-11-23 15:06:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 15:06:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 15:06:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2022-11-23 15:06:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2022-11-23 15:06:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_clear_tt_buffer [2022-11-23 15:06:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_clear_tt_buffer [2022-11-23 15:06:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-23 15:06:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-23 15:06:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:06:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:06:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_writel [2022-11-23 15:06:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_writel [2022-11-23 15:06:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_command_buf [2022-11-23 15:06:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_command_buf [2022-11-23 15:06:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure start_iaa_cycle [2022-11-23 15:06:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure start_iaa_cycle [2022-11-23 15:06:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_halt [2022-11-23 15:06:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_halt [2022-11-23 15:06:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-11-23 15:06:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-11-23 15:06:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hcd_probe [2022-11-23 15:06:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hcd_probe [2022-11-23 15:06:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_usecs [2022-11-23 15:06:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_usecs [2022-11-23 15:06:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 15:06:30,636 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 15:06:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_endpoint_disable [2022-11-23 15:06:30,636 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_endpoint_disable [2022-11-23 15:06:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-23 15:06:30,636 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-23 15:06:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 15:06:30,636 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 15:06:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 15:06:30,636 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 15:06:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 15:06:30,636 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 15:06:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure qh_completions [2022-11-23 15:06:30,637 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_completions [2022-11-23 15:06:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_mem_cleanup [2022-11-23 15:06:30,637 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_mem_cleanup [2022-11-23 15:06:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_handle_controller_death [2022-11-23 15:06:30,637 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_handle_controller_death [2022-11-23 15:06:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 15:06:30,637 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 15:06:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure disable_periodic [2022-11-23 15:06:30,637 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_periodic [2022-11-23 15:06:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_hcd [2022-11-23 15:06:30,638 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_hcd [2022-11-23 15:06:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure enable_periodic [2022-11-23 15:06:30,638 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_periodic [2022-11-23 15:06:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_port_speed [2022-11-23 15:06:30,638 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_port_speed [2022-11-23 15:06:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure qh_lines [2022-11-23 15:06:30,638 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_lines [2022-11-23 15:06:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-23 15:06:30,638 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-23 15:06:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_shutdown [2022-11-23 15:06:30,651 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_shutdown [2022-11-23 15:06:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 15:06:30,651 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 15:06:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_handle_intr_unlinks [2022-11-23 15:06:30,651 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_handle_intr_unlinks [2022-11-23 15:06:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_enable_event [2022-11-23 15:06:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_enable_event [2022-11-23 15:06:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qtd_free [2022-11-23 15:06:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qtd_free [2022-11-23 15:06:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_read_frame_index [2022-11-23 15:06:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_read_frame_index [2022-11-23 15:06:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_unlink_urb_from_ep [2022-11-23 15:06:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_unlink_urb_from_ep [2022-11-23 15:06:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:06:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_quiesce [2022-11-23 15:06:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_quiesce [2022-11-23 15:06:30,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_debug_buffer [2022-11-23 15:06:30,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_debug_buffer [2022-11-23 15:06:30,653 INFO L130 BoogieDeclarations]: Found specification of procedure qh_schedule [2022-11-23 15:06:30,653 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_schedule [2022-11-23 15:06:30,653 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_get_frame [2022-11-23 15:06:30,653 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_get_frame [2022-11-23 15:06:30,653 INFO L130 BoogieDeclarations]: Found specification of procedure check_intr_schedule [2022-11-23 15:06:30,653 INFO L138 BoogieDeclarations]: Found implementation of procedure check_intr_schedule [2022-11-23 15:06:30,654 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2022-11-23 15:06:30,654 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2022-11-23 15:06:30,654 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 15:06:30,654 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 15:06:30,654 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_silence_controller [2022-11-23 15:06:30,654 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_silence_controller [2022-11-23 15:06:30,655 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-23 15:06:30,655 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-23 15:06:30,655 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:06:30,655 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:06:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_clear_tt_buffer_complete [2022-11-23 15:06:30,656 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_clear_tt_buffer_complete [2022-11-23 15:06:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-23 15:06:30,657 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-23 15:06:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-23 15:06:30,657 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-23 15:06:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:06:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_endpoint_reset [2022-11-23 15:06:30,658 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_endpoint_reset [2022-11-23 15:06:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_link_urb_to_ep [2022-11-23 15:06:30,659 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_link_urb_to_ep [2022-11-23 15:06:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-23 15:06:30,659 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-23 15:06:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:06:30,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:06:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure iso_sched_free [2022-11-23 15:06:30,660 INFO L138 BoogieDeclarations]: Found implementation of procedure iso_sched_free [2022-11-23 15:06:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 15:06:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 15:06:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:06:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_reset [2022-11-23 15:06:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_reset [2022-11-23 15:06:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 15:06:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 15:06:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-23 15:06:30,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-23 15:06:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:06:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure usb_calc_bus_time [2022-11-23 15:06:30,663 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_calc_bus_time [2022-11-23 15:06:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_cancel [2022-11-23 15:06:30,663 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_cancel [2022-11-23 15:06:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure qh_link_async [2022-11-23 15:06:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_link_async [2022-11-23 15:06:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:06:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_qtd_alloc [2022-11-23 15:06:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_qtd_alloc [2022-11-23 15:06:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_work [2022-11-23 15:06:30,668 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_work [2022-11-23 15:06:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure qh_urb_transaction [2022-11-23 15:06:30,669 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_urb_transaction [2022-11-23 15:06:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-23 15:06:30,670 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-23 15:06:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:06:30,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:06:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_hub_control [2022-11-23 15:06:30,671 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_hub_control [2022-11-23 15:06:30,679 INFO L130 BoogieDeclarations]: Found specification of procedure check_period [2022-11-23 15:06:30,679 INFO L138 BoogieDeclarations]: Found implementation of procedure check_period [2022-11-23 15:06:30,679 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2022-11-23 15:06:30,679 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2022-11-23 15:06:30,679 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2022-11-23 15:06:30,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2022-11-23 15:06:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-23 15:06:30,680 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-23 15:06:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure shadow_next_periodic [2022-11-23 15:06:30,680 INFO L138 BoogieDeclarations]: Found implementation of procedure shadow_next_periodic [2022-11-23 15:06:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-23 15:06:30,680 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-23 15:06:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpu [2022-11-23 15:06:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpu [2022-11-23 15:06:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure handshake [2022-11-23 15:06:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure handshake [2022-11-23 15:06:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure debug_close [2022-11-23 15:06:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_close [2022-11-23 15:06:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_debug_buffer [2022-11-23 15:06:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_debug_buffer [2022-11-23 15:06:30,682 INFO L130 BoogieDeclarations]: Found specification of procedure qh_refresh [2022-11-23 15:06:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_refresh [2022-11-23 15:06:30,682 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 15:06:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 15:06:30,682 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_urb_enqueue [2022-11-23 15:06:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_urb_enqueue [2022-11-23 15:06:30,682 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_async [2022-11-23 15:06:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_async [2022-11-23 15:06:30,683 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-23 15:06:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-23 15:06:30,683 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_hc32 [2022-11-23 15:06:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_hc32 [2022-11-23 15:06:30,683 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 15:06:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 15:06:30,683 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-23 15:06:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-23 15:06:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 15:06:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 15:06:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 15:06:30,685 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 15:06:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure qh_append_tds [2022-11-23 15:06:30,686 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_append_tds [2022-11-23 15:06:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:06:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_fotg210_init [2022-11-23 15:06:30,686 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_fotg210_init [2022-11-23 15:06:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_port_handed_over [2022-11-23 15:06:30,687 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_port_handed_over [2022-11-23 15:06:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure fotg210_urb_done [2022-11-23 15:06:30,687 INFO L138 BoogieDeclarations]: Found implementation of procedure fotg210_urb_done [2022-11-23 15:06:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:06:30,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:06:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2022-11-23 15:06:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2022-11-23 15:06:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 15:06:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 15:06:31,909 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:06:31,913 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:06:32,674 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:06:45,737 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_platform_driver_unregister_16_returnLabel#1: assume { :end_inline_ldv_platform_driver_unregister_16 } true; [2022-11-23 15:06:46,211 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:06:49,736 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:06:49,737 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:06:49,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:06:49 BoogieIcfgContainer [2022-11-23 15:06:49,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:06:49,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:06:49,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:06:49,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:06:49,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:06:24" (1/3) ... [2022-11-23 15:06:49,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33664f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:06:49, skipping insertion in model container [2022-11-23 15:06:49,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:29" (2/3) ... [2022-11-23 15:06:49,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33664f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:06:49, skipping insertion in model container [2022-11-23 15:06:49,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:06:49" (3/3) ... [2022-11-23 15:06:49,760 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--fotg210-hcd.ko-entry_point.cil.out.i [2022-11-23 15:06:49,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:06:49,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:06:49,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:06:49,933 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;@7267415b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:06:49,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:06:49,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 2983 states, 1855 states have (on average 1.3412398921832884) internal successors, (2488), 1944 states have internal predecessors, (2488), 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) [2022-11-23 15:06:49,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-23 15:06:49,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:49,973 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] [2022-11-23 15:06:49,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:49,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:49,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1337838728, now seen corresponding path program 1 times [2022-11-23 15:06:49,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:49,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217471644] [2022-11-23 15:06:49,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:50,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-23 15:06:51,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:51,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217471644] [2022-11-23 15:06:51,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217471644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:51,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:51,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:06:51,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412329023] [2022-11-23 15:06:51,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:51,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:06:51,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:51,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:06:51,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:06:51,854 INFO L87 Difference]: Start difference. First operand has 2983 states, 1855 states have (on average 1.3412398921832884) internal successors, (2488), 1944 states have internal predecessors, (2488), 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) [2022-11-23 15:06:53,960 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 [] [2022-11-23 15:06:58,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:58,939 INFO L93 Difference]: Finished difference Result 8802 states and 13133 transitions. [2022-11-23 15:06:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:06:58,943 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 [2022-11-23 15:06:58,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:59,045 INFO L225 Difference]: With dead ends: 8802 [2022-11-23 15:06:59,045 INFO L226 Difference]: Without dead ends: 5841 [2022-11-23 15:06:59,080 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 [2022-11-23 15:06:59,085 INFO L413 NwaCegarLoop]: 5023 mSDtfsCounter, 4308 mSDsluCounter, 4070 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4308 SdHoareTripleChecker+Valid, 9093 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:59,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4308 Valid, 9093 Invalid, 727 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 725 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-23 15:06:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5841 states. [2022-11-23 15:06:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5841 to 5826. [2022-11-23 15:06:59,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5826 states, 3637 states have (on average 1.3365411053065714) internal successors, (4861), 3792 states have internal predecessors, (4861), 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) [2022-11-23 15:06:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 8665 transitions. [2022-11-23 15:06:59,961 INFO L78 Accepts]: Start accepts. Automaton has 5826 states and 8665 transitions. Word has length 296 [2022-11-23 15:06:59,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:59,966 INFO L495 AbstractCegarLoop]: Abstraction has 5826 states and 8665 transitions. [2022-11-23 15:06:59,967 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) [2022-11-23 15:06:59,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5826 states and 8665 transitions. [2022-11-23 15:06:59,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-23 15:06:59,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:59,987 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] [2022-11-23 15:06:59,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:06:59,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:59,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:59,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2110920236, now seen corresponding path program 1 times [2022-11-23 15:06:59,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:59,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890061436] [2022-11-23 15:06:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:59,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-23 15:07:01,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:01,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890061436] [2022-11-23 15:07:01,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890061436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:01,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:01,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:07:01,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538024308] [2022-11-23 15:07:01,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:01,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:07:01,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:01,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:07:01,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:07:01,173 INFO L87 Difference]: Start difference. First operand 5826 states and 8665 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) [2022-11-23 15:07:03,262 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 [] [2022-11-23 15:07:08,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:07:08,457 INFO L93 Difference]: Finished difference Result 17309 states and 25740 transitions. [2022-11-23 15:07:08,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:07:08,457 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 [2022-11-23 15:07:08,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:07:08,560 INFO L225 Difference]: With dead ends: 17309 [2022-11-23 15:07:08,561 INFO L226 Difference]: Without dead ends: 11544 [2022-11-23 15:07:08,601 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 [2022-11-23 15:07:08,602 INFO L413 NwaCegarLoop]: 5011 mSDtfsCounter, 4268 mSDsluCounter, 4036 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4268 SdHoareTripleChecker+Valid, 9047 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:07:08,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4268 Valid, 9047 Invalid, 726 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 724 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 15:07:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11544 states. [2022-11-23 15:07:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11544 to 11528. [2022-11-23 15:07:09,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11528 states, 7201 states have (on average 1.33703652270518) internal successors, (9628), 7508 states have internal predecessors, (9628), 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) [2022-11-23 15:07:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11528 states to 11528 states and 17144 transitions. [2022-11-23 15:07:09,517 INFO L78 Accepts]: Start accepts. Automaton has 11528 states and 17144 transitions. Word has length 297 [2022-11-23 15:07:09,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:07:09,522 INFO L495 AbstractCegarLoop]: Abstraction has 11528 states and 17144 transitions. [2022-11-23 15:07:09,524 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) [2022-11-23 15:07:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 11528 states and 17144 transitions. [2022-11-23 15:07:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-23 15:07:09,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:09,533 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] [2022-11-23 15:07:09,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:07:09,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:09,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:09,545 INFO L85 PathProgramCache]: Analyzing trace with hash 396037884, now seen corresponding path program 1 times [2022-11-23 15:07:09,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:09,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772873627] [2022-11-23 15:07:09,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:09,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-23 15:07:10,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:10,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772873627] [2022-11-23 15:07:10,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772873627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:10,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:10,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:07:10,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266486050] [2022-11-23 15:07:10,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:10,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:07:10,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:10,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:07:10,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:07:10,462 INFO L87 Difference]: Start difference. First operand 11528 states and 17144 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) [2022-11-23 15:07:12,544 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 [] [2022-11-23 15:07:17,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:07:17,692 INFO L93 Difference]: Finished difference Result 34053 states and 50622 transitions. [2022-11-23 15:07:17,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:07:17,693 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 [2022-11-23 15:07:17,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:07:17,905 INFO L225 Difference]: With dead ends: 34053 [2022-11-23 15:07:17,905 INFO L226 Difference]: Without dead ends: 22586 [2022-11-23 15:07:17,992 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 [2022-11-23 15:07:17,997 INFO L413 NwaCegarLoop]: 5309 mSDtfsCounter, 4242 mSDsluCounter, 4035 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4242 SdHoareTripleChecker+Valid, 9344 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:07:17,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4242 Valid, 9344 Invalid, 772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 770 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 15:07:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22586 states. [2022-11-23 15:07:19,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22586 to 22572. [2022-11-23 15:07:19,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22572 states, 14108 states have (on average 1.3370428125886022) internal successors, (18863), 14702 states have internal predecessors, (18863), 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) [2022-11-23 15:07:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22572 states to 22572 states and 33547 transitions. [2022-11-23 15:07:20,061 INFO L78 Accepts]: Start accepts. Automaton has 22572 states and 33547 transitions. Word has length 302 [2022-11-23 15:07:20,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:07:20,066 INFO L495 AbstractCegarLoop]: Abstraction has 22572 states and 33547 transitions. [2022-11-23 15:07:20,067 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) [2022-11-23 15:07:20,067 INFO L276 IsEmpty]: Start isEmpty. Operand 22572 states and 33547 transitions. [2022-11-23 15:07:20,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-23 15:07:20,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:20,075 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] [2022-11-23 15:07:20,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:07:20,076 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:20,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash 629848176, now seen corresponding path program 1 times [2022-11-23 15:07:20,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:20,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54058815] [2022-11-23 15:07:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:20,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-23 15:07:21,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:21,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54058815] [2022-11-23 15:07:21,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54058815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:21,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:21,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:07:21,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959927425] [2022-11-23 15:07:21,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:21,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:07:21,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:21,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:07:21,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:07:21,164 INFO L87 Difference]: Start difference. First operand 22572 states and 33547 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) [2022-11-23 15:07:23,258 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 [] [2022-11-23 15:07:26,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:07:26,092 INFO L93 Difference]: Finished difference Result 22574 states and 33548 transitions. [2022-11-23 15:07:26,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:07:26,094 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 [2022-11-23 15:07:26,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:07:26,267 INFO L225 Difference]: With dead ends: 22574 [2022-11-23 15:07:26,267 INFO L226 Difference]: Without dead ends: 22571 [2022-11-23 15:07:26,290 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 [2022-11-23 15:07:26,294 INFO L413 NwaCegarLoop]: 4047 mSDtfsCounter, 4329 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4329 SdHoareTripleChecker+Valid, 4047 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:07:26,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4329 Valid, 4047 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 354 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 15:07:26,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22571 states. [2022-11-23 15:07:28,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22571 to 22571. [2022-11-23 15:07:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22571 states, 14108 states have (on average 1.3369719308193933) internal successors, (18862), 14701 states have internal predecessors, (18862), 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) [2022-11-23 15:07:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22571 states to 22571 states and 33545 transitions. [2022-11-23 15:07:28,240 INFO L78 Accepts]: Start accepts. Automaton has 22571 states and 33545 transitions. Word has length 304 [2022-11-23 15:07:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:07:28,242 INFO L495 AbstractCegarLoop]: Abstraction has 22571 states and 33545 transitions. [2022-11-23 15:07:28,243 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) [2022-11-23 15:07:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 22571 states and 33545 transitions. [2022-11-23 15:07:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-23 15:07:28,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:28,251 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] [2022-11-23 15:07:28,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:07:28,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:28,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:28,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1951251740, now seen corresponding path program 1 times [2022-11-23 15:07:28,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:28,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434905435] [2022-11-23 15:07:28,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:28,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-23 15:07:29,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:29,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434905435] [2022-11-23 15:07:29,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434905435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:29,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:29,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:07:29,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354729069] [2022-11-23 15:07:29,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:29,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:07:29,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:29,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:07:29,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:07:29,124 INFO L87 Difference]: Start difference. First operand 22571 states and 33545 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) [2022-11-23 15:07:31,213 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 [] [2022-11-23 15:07:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:07:34,014 INFO L93 Difference]: Finished difference Result 22573 states and 33546 transitions. [2022-11-23 15:07:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:07:34,015 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 [2022-11-23 15:07:34,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:07:34,204 INFO L225 Difference]: With dead ends: 22573 [2022-11-23 15:07:34,204 INFO L226 Difference]: Without dead ends: 22570 [2022-11-23 15:07:34,223 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 [2022-11-23 15:07:34,226 INFO L413 NwaCegarLoop]: 4045 mSDtfsCounter, 4326 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4326 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:07:34,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4326 Valid, 4045 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 354 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-23 15:07:34,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22570 states. [2022-11-23 15:07:36,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22570 to 22570. [2022-11-23 15:07:36,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22570 states, 14108 states have (on average 1.3369010490501843) internal successors, (18861), 14700 states have internal predecessors, (18861), 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) [2022-11-23 15:07:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22570 states to 22570 states and 33543 transitions. [2022-11-23 15:07:36,240 INFO L78 Accepts]: Start accepts. Automaton has 22570 states and 33543 transitions. Word has length 305 [2022-11-23 15:07:36,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:07:36,241 INFO L495 AbstractCegarLoop]: Abstraction has 22570 states and 33543 transitions. [2022-11-23 15:07:36,242 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) [2022-11-23 15:07:36,242 INFO L276 IsEmpty]: Start isEmpty. Operand 22570 states and 33543 transitions. [2022-11-23 15:07:36,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-23 15:07:36,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:36,249 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] [2022-11-23 15:07:36,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:07:36,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:36,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash -360965645, now seen corresponding path program 1 times [2022-11-23 15:07:36,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:36,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994570573] [2022-11-23 15:07:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:36,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-23 15:07:37,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:37,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994570573] [2022-11-23 15:07:37,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994570573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:37,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:37,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:07:37,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591834523] [2022-11-23 15:07:37,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:37,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:07:37,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:07:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:07:37,553 INFO L87 Difference]: Start difference. First operand 22570 states and 33543 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) [2022-11-23 15:07:39,643 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 [] [2022-11-23 15:07:43,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:07:43,659 INFO L93 Difference]: Finished difference Result 31611 states and 46236 transitions. [2022-11-23 15:07:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:07:43,668 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 [2022-11-23 15:07:43,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:07:43,849 INFO L225 Difference]: With dead ends: 31611 [2022-11-23 15:07:43,849 INFO L226 Difference]: Without dead ends: 31607 [2022-11-23 15:07:43,866 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 [2022-11-23 15:07:43,867 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 3933 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3933 SdHoareTripleChecker+Valid, 6419 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:07:43,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3933 Valid, 6419 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 566 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-23 15:07:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31607 states. [2022-11-23 15:07:46,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31607 to 31605. [2022-11-23 15:07:46,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31605 states, 19715 states have (on average 1.3237636317524728) internal successors, (26098), 20508 states have internal predecessors, (26098), 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) [2022-11-23 15:07:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31605 states to 31605 states and 46224 transitions. [2022-11-23 15:07:46,244 INFO L78 Accepts]: Start accepts. Automaton has 31605 states and 46224 transitions. Word has length 306 [2022-11-23 15:07:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:07:46,245 INFO L495 AbstractCegarLoop]: Abstraction has 31605 states and 46224 transitions. [2022-11-23 15:07:46,245 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) [2022-11-23 15:07:46,246 INFO L276 IsEmpty]: Start isEmpty. Operand 31605 states and 46224 transitions. [2022-11-23 15:07:46,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-23 15:07:46,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:46,252 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] [2022-11-23 15:07:46,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:07:46,253 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:46,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:46,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1693267911, now seen corresponding path program 1 times [2022-11-23 15:07:46,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:46,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158718158] [2022-11-23 15:07:46,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:46,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2022-11-23 15:07:47,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:47,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158718158] [2022-11-23 15:07:47,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158718158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:47,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:47,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:07:47,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312371346] [2022-11-23 15:07:47,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:47,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:07:47,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:47,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:07:47,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:07:47,251 INFO L87 Difference]: Start difference. First operand 31605 states and 46224 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) [2022-11-23 15:07:49,346 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 [] [2022-11-23 15:07:52,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:07:52,451 INFO L93 Difference]: Finished difference Result 31607 states and 46225 transitions. [2022-11-23 15:07:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:07:52,452 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 [2022-11-23 15:07:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:07:52,631 INFO L225 Difference]: With dead ends: 31607 [2022-11-23 15:07:52,631 INFO L226 Difference]: Without dead ends: 31550 [2022-11-23 15:07:52,651 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 [2022-11-23 15:07:52,652 INFO L413 NwaCegarLoop]: 4040 mSDtfsCounter, 4318 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4318 SdHoareTripleChecker+Valid, 4040 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:07:52,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4318 Valid, 4040 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 353 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 15:07:52,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31550 states. [2022-11-23 15:07:54,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31550 to 31550. [2022-11-23 15:07:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31550 states, 19693 states have (on average 1.323312852282537) internal successors, (26060), 20478 states have internal predecessors, (26060), 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) [2022-11-23 15:07:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31550 states to 31550 states and 46137 transitions. [2022-11-23 15:07:55,155 INFO L78 Accepts]: Start accepts. Automaton has 31550 states and 46137 transitions. Word has length 307 [2022-11-23 15:07:55,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:07:55,157 INFO L495 AbstractCegarLoop]: Abstraction has 31550 states and 46137 transitions. [2022-11-23 15:07:55,157 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) [2022-11-23 15:07:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand 31550 states and 46137 transitions. [2022-11-23 15:07:55,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-23 15:07:55,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:55,194 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] [2022-11-23 15:07:55,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:07:55,195 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:55,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:55,196 INFO L85 PathProgramCache]: Analyzing trace with hash -956820248, now seen corresponding path program 1 times [2022-11-23 15:07:55,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:55,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407055572] [2022-11-23 15:07:55,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:55,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3174 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2022-11-23 15:07:56,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:56,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407055572] [2022-11-23 15:07:56,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407055572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:56,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:56,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:07:56,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046981710] [2022-11-23 15:07:56,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:56,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:07:56,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:56,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:07:56,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:07:56,398 INFO L87 Difference]: Start difference. First operand 31550 states and 46137 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) [2022-11-23 15:07:58,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:08:00,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:08:02,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:08:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:08:09,205 INFO L93 Difference]: Finished difference Result 63063 states and 92217 transitions. [2022-11-23 15:08:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:08:09,206 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 [2022-11-23 15:08:09,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:08:09,372 INFO L225 Difference]: With dead ends: 63063 [2022-11-23 15:08:09,373 INFO L226 Difference]: Without dead ends: 31550 [2022-11-23 15:08:09,516 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 [2022-11-23 15:08:09,517 INFO L413 NwaCegarLoop]: 4025 mSDtfsCounter, 3 mSDsluCounter, 8045 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12070 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:08:09,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12070 Invalid, 1067 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1064 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2022-11-23 15:08:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31550 states. [2022-11-23 15:08:11,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31550 to 31550. [2022-11-23 15:08:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31550 states, 19693 states have (on average 1.3229066165642613) internal successors, (26052), 20478 states have internal predecessors, (26052), 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) [2022-11-23 15:08:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31550 states to 31550 states and 46129 transitions. [2022-11-23 15:08:11,632 INFO L78 Accepts]: Start accepts. Automaton has 31550 states and 46129 transitions. Word has length 457 [2022-11-23 15:08:11,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:08:11,633 INFO L495 AbstractCegarLoop]: Abstraction has 31550 states and 46129 transitions. [2022-11-23 15:08:11,633 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) [2022-11-23 15:08:11,633 INFO L276 IsEmpty]: Start isEmpty. Operand 31550 states and 46129 transitions. [2022-11-23 15:08:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-23 15:08:11,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:11,665 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] [2022-11-23 15:08:11,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:08:11,665 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:11,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:11,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2070950474, now seen corresponding path program 1 times [2022-11-23 15:08:11,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:08:11,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304789503] [2022-11-23 15:08:11,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:11,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:08:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2022-11-23 15:08:13,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:08:13,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304789503] [2022-11-23 15:08:13,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304789503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:08:13,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:08:13,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:08:13,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279221511] [2022-11-23 15:08:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:08:13,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:08:13,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:08:13,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:08:13,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:08:13,028 INFO L87 Difference]: Start difference. First operand 31550 states and 46129 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) [2022-11-23 15:08:15,124 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 [] [2022-11-23 15:08:22,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:08:22,606 INFO L93 Difference]: Finished difference Result 78006 states and 114089 transitions. [2022-11-23 15:08:22,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:08:22,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 484 [2022-11-23 15:08:22,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:08:22,817 INFO L225 Difference]: With dead ends: 78006 [2022-11-23 15:08:22,817 INFO L226 Difference]: Without dead ends: 46517 [2022-11-23 15:08:23,072 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 [2022-11-23 15:08:23,073 INFO L413 NwaCegarLoop]: 7592 mSDtfsCounter, 4263 mSDsluCounter, 4005 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4263 SdHoareTripleChecker+Valid, 11597 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:08:23,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4263 Valid, 11597 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1018 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-23 15:08:23,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46517 states. [2022-11-23 15:08:25,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46517 to 46513. [2022-11-23 15:08:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46513 states, 29049 states have (on average 1.3232469276050811) internal successors, (38439), 30206 states have internal predecessors, (38439), 14794 states have call successors, (14794), 2670 states have call predecessors, (14794), 2669 states have return successors, (14793), 14534 states have call predecessors, (14793), 14793 states have call successors, (14793) [2022-11-23 15:08:26,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46513 states to 46513 states and 68026 transitions. [2022-11-23 15:08:26,041 INFO L78 Accepts]: Start accepts. Automaton has 46513 states and 68026 transitions. Word has length 484 [2022-11-23 15:08:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:08:26,043 INFO L495 AbstractCegarLoop]: Abstraction has 46513 states and 68026 transitions. [2022-11-23 15:08:26,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-11-23 15:08:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 46513 states and 68026 transitions. [2022-11-23 15:08:26,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-11-23 15:08:26,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:26,073 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:08:26,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:08:26,074 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:26,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:26,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1733212302, now seen corresponding path program 1 times [2022-11-23 15:08:26,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:08:26,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781781284] [2022-11-23 15:08:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:26,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:08:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3176 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2022-11-23 15:08:27,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:08:27,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781781284] [2022-11-23 15:08:27,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781781284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:08:27,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:08:27,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:08:27,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649295242] [2022-11-23 15:08:27,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:08:27,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:08:27,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:08:27,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:08:27,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:08:27,419 INFO L87 Difference]: Start difference. First operand 46513 states and 68026 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-11-23 15:08:29,507 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 [] [2022-11-23 15:08:37,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:08:37,977 INFO L93 Difference]: Finished difference Result 114588 states and 167656 transitions. [2022-11-23 15:08:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:08:37,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 490 [2022-11-23 15:08:37,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:08:38,309 INFO L225 Difference]: With dead ends: 114588 [2022-11-23 15:08:38,309 INFO L226 Difference]: Without dead ends: 68136 [2022-11-23 15:08:38,652 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 [2022-11-23 15:08:38,653 INFO L413 NwaCegarLoop]: 7569 mSDtfsCounter, 4239 mSDsluCounter, 3981 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4239 SdHoareTripleChecker+Valid, 11550 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:08:38,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4239 Valid, 11550 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1011 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-23 15:08:38,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68136 states. [2022-11-23 15:08:42,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68136 to 68133. [2022-11-23 15:08:42,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68133 states, 42583 states have (on average 1.3238146678251885) internal successors, (56372), 44274 states have internal predecessors, (56372), 21658 states have call successors, (21658), 3892 states have call predecessors, (21658), 3891 states have return successors, (21657), 21282 states have call predecessors, (21657), 21657 states have call successors, (21657) [2022-11-23 15:08:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68133 states to 68133 states and 99687 transitions. [2022-11-23 15:08:43,034 INFO L78 Accepts]: Start accepts. Automaton has 68133 states and 99687 transitions. Word has length 490 [2022-11-23 15:08:43,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:08:43,036 INFO L495 AbstractCegarLoop]: Abstraction has 68133 states and 99687 transitions. [2022-11-23 15:08:43,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-11-23 15:08:43,036 INFO L276 IsEmpty]: Start isEmpty. Operand 68133 states and 99687 transitions. [2022-11-23 15:08:43,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-11-23 15:08:43,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:43,062 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] [2022-11-23 15:08:43,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:08:43,062 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:43,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1131494788, now seen corresponding path program 1 times [2022-11-23 15:08:43,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:08:43,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283610698] [2022-11-23 15:08:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:43,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:08:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat