./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-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:42:17,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:42:17,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:42:17,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:42:17,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:42:17,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:42:17,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:42:17,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:42:17,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:42:17,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:42:17,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:42:17,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:42:17,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:42:17,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:42:17,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:42:17,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:42:17,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:42:17,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:42:17,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:42:17,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:42:17,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:42:17,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:42:17,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:42:17,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:42:17,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:42:17,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:42:17,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:42:17,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:42:17,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:42:17,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:42:17,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:42:17,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:42:17,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:42:17,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:42:17,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:42:17,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:42:17,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:42:17,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:42:17,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:42:17,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:42:17,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:42:17,569 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:42:17,610 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:42:17,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:42:17,615 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:42:17,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:42:17,616 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:42:17,616 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:42:17,616 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:42:17,616 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:42:17,617 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:42:17,617 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:42:17,618 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:42:17,618 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:42:17,618 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:42:17,619 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:42:17,619 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:42:17,619 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:42:17,619 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:42:17,619 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:42:17,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:42:17,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:42:17,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:42:17,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:42:17,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:42:17,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:42:17,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:42:17,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:42:17,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:42:17,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:42:17,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:42:17,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:42:17,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:42:17,625 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:42:17,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:42:17,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:42:17,625 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:42:17,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:42:17,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:42:17,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:42:17,627 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_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d [2022-11-03 03:42:17,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:42:17,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:42:17,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:42:17,904 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:42:17,917 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:42:17,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2022-11-03 03:42:18,009 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/data/4dfe3e90a/83adc76a76eb46bca333f16f87970612/FLAGdac60f2b2 [2022-11-03 03:42:19,093 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:42:19,094 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2022-11-03 03:42:19,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/data/4dfe3e90a/83adc76a76eb46bca333f16f87970612/FLAGdac60f2b2 [2022-11-03 03:42:19,370 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/data/4dfe3e90a/83adc76a76eb46bca333f16f87970612 [2022-11-03 03:42:19,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:42:19,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:42:19,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:42:19,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:42:19,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:42:19,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:19" (1/1) ... [2022-11-03 03:42:19,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487c0fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:19, skipping insertion in model container [2022-11-03 03:42:19,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:19" (1/1) ... [2022-11-03 03:42:19,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:42:19,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:42:23,497 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i[448815,448828] [2022-11-03 03:42:23,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:42:23,581 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:42:24,242 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i[448815,448828] [2022-11-03 03:42:24,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:42:24,620 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:42:24,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:24 WrapperNode [2022-11-03 03:42:24,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:42:24,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:42:24,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:42:24,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:42:24,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:24" (1/1) ... [2022-11-03 03:42:24,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:24" (1/1) ... [2022-11-03 03:42:25,025 INFO L138 Inliner]: procedures = 490, calls = 4671, calls flagged for inlining = 140, calls inlined = 118, statements flattened = 7284 [2022-11-03 03:42:25,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:42:25,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:42:25,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:42:25,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:42:25,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:24" (1/1) ... [2022-11-03 03:42:25,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:24" (1/1) ... [2022-11-03 03:42:25,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:24" (1/1) ... [2022-11-03 03:42:25,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:24" (1/1) ... [2022-11-03 03:42:25,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:24" (1/1) ... [2022-11-03 03:42:25,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:24" (1/1) ... [2022-11-03 03:42:25,390 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:24" (1/1) ... [2022-11-03 03:42:25,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:24" (1/1) ... [2022-11-03 03:42:25,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:42:25,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:42:25,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:42:25,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:42:25,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:24" (1/1) ... [2022-11-03 03:42:25,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:42:25,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:42:25,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:42:25,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd442de6-cec5-41b0-ac80-73b1ab6d0ae0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:42:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-11-03 03:42:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-11-03 03:42:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_prepare_pkt [2022-11-03 03:42:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_prepare_pkt [2022-11-03 03:42:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:42:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:42:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-03 03:42:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-03 03:42:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_setup [2022-11-03 03:42:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_setup [2022-11-03 03:42:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 03:42:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 03:42:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:42:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:42:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure ll_dequeue [2022-11-03 03:42:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_dequeue [2022-11-03 03:42:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_close [2022-11-03 03:42:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_close [2022-11-03 03:42:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-11-03 03:42:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-11-03 03:42:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 03:42:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 03:42:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:42:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:42:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_flush [2022-11-03 03:42:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_flush [2022-11-03 03:42:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure ath_dequeue [2022-11-03 03:42:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_dequeue [2022-11-03 03:42:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-03 03:42:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-03 03:42:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 03:42:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure h5_link_control [2022-11-03 03:42:25,556 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_link_control [2022-11-03 03:42:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:42:25,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:42:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:42:25,556 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:42:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure bt_skb_alloc___1 [2022-11-03 03:42:25,557 INFO L138 BoogieDeclarations]: Found implementation of procedure bt_skb_alloc___1 [2022-11-03 03:42:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2022-11-03 03:42:25,557 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2022-11-03 03:42:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:42:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure h4_enqueue [2022-11-03 03:42:25,557 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_enqueue [2022-11-03 03:42:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-03 03:42:25,558 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-03 03:42:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure ath_hci_uart_work [2022-11-03 03:42:25,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_hci_uart_work [2022-11-03 03:42:25,559 INFO L130 BoogieDeclarations]: Found specification of procedure btbcm_set_bdaddr [2022-11-03 03:42:25,559 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_setup [2022-11-03 03:42:25,560 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_setup [2022-11-03 03:42:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:42:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 03:42:25,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 03:42:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:42:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure __ll_do_awake [2022-11-03 03:42:25,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __ll_do_awake [2022-11-03 03:42:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_4 [2022-11-03 03:42:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_4 [2022-11-03 03:42:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure h5_peer_reset [2022-11-03 03:42:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_peer_reset [2022-11-03 03:42:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:42:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure h5_enqueue [2022-11-03 03:42:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_enqueue [2022-11-03 03:42:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_complete_rx_pkt [2022-11-03 03:42:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_complete_rx_pkt [2022-11-03 03:42:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:42:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:42:25,564 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_unregister_proto [2022-11-03 03:42:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_unregister_proto [2022-11-03 03:42:25,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 03:42:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 03:42:25,564 INFO L130 BoogieDeclarations]: Found specification of procedure hci_get_drvdata [2022-11-03 03:42:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_get_drvdata [2022-11-03 03:42:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_close [2022-11-03 03:42:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_close [2022-11-03 03:42:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure btintel_set_bdaddr [2022-11-03 03:42:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2022-11-03 03:42:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2022-11-03 03:42:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_recv [2022-11-03 03:42:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_recv [2022-11-03 03:42:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_register_proto [2022-11-03 03:42:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_register_proto [2022-11-03 03:42:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_recv [2022-11-03 03:42:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_recv [2022-11-03 03:42:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 03:42:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 03:42:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_flush [2022-11-03 03:42:25,568 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_flush [2022-11-03 03:42:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:42:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2022-11-03 03:42:25,569 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2022-11-03 03:42:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev8 [2022-11-03 03:42:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev8 [2022-11-03 03:42:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:42:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure bscp_get_crc [2022-11-03 03:42:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure bscp_get_crc [2022-11-03 03:42:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:42:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:42:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:42:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:42:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:42:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_4 [2022-11-03 03:42:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_4 [2022-11-03 03:42:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_init_work [2022-11-03 03:42:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_init_work [2022-11-03 03:42:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure ll_close [2022-11-03 03:42:25,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_close [2022-11-03 03:42:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:42:25,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:42:25,573 INFO L130 BoogieDeclarations]: Found specification of procedure hci_register_dev [2022-11-03 03:42:25,575 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_register_dev [2022-11-03 03:42:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure send_hcill_cmd [2022-11-03 03:42:25,576 INFO L138 BoogieDeclarations]: Found implementation of procedure send_hcill_cmd [2022-11-03 03:42:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 03:42:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 03:42:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure ath_flush [2022-11-03 03:42:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_flush [2022-11-03 03:42:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_slip_msgdelim [2022-11-03 03:42:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_slip_msgdelim [2022-11-03 03:42:25,584 INFO L130 BoogieDeclarations]: Found specification of procedure h4_dequeue [2022-11-03 03:42:25,584 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_dequeue [2022-11-03 03:42:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure ath_wakeup_ar3k [2022-11-03 03:42:25,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_wakeup_ar3k [2022-11-03 03:42:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure h5_prepare_pkt [2022-11-03 03:42:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_prepare_pkt [2022-11-03 03:42:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-11-03 03:42:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-11-03 03:42:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 03:42:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 03:42:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_open [2022-11-03 03:42:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_open [2022-11-03 03:42:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 03:42:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 03:42:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_close [2022-11-03 03:42:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_close [2022-11-03 03:42:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:42:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:42:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure h5_cfg_field [2022-11-03 03:42:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_cfg_field [2022-11-03 03:42:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:42:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:42:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 03:42:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 03:42:25,588 INFO L130 BoogieDeclarations]: Found specification of procedure h5_flush [2022-11-03 03:42:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_flush [2022-11-03 03:42:25,588 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 03:42:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-03 03:42:25,588 INFO L130 BoogieDeclarations]: Found specification of procedure ll_check_data_len [2022-11-03 03:42:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_check_data_len [2022-11-03 03:42:25,588 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-11-03 03:42:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-11-03 03:42:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:42:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:42:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:42:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:42:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure h5_slip_one_byte [2022-11-03 03:42:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_slip_one_byte [2022-11-03 03:42:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-11-03 03:42:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-11-03 03:42:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2022-11-03 03:42:25,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2022-11-03 03:42:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_set_baudrate [2022-11-03 03:42:25,590 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_set_baudrate [2022-11-03 03:42:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2022-11-03 03:42:25,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2022-11-03 03:42:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2022-11-03 03:42:25,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2022-11-03 03:42:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure ath_open [2022-11-03 03:42:25,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_open [2022-11-03 03:42:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure ath_setup [2022-11-03 03:42:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_setup [2022-11-03 03:42:25,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:42:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:42:25,591 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_dequeue [2022-11-03 03:42:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_dequeue [2022-11-03 03:42:25,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:42:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:42:25,591 INFO L130 BoogieDeclarations]: Found specification of procedure hci_free_dev [2022-11-03 03:42:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_free_dev [2022-11-03 03:42:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head [2022-11-03 03:42:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head [2022-11-03 03:42:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:42:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:42:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure h4_open [2022-11-03 03:42:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_open [2022-11-03 03:42:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 03:42:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 03:42:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 03:42:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 03:42:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_send_frame [2022-11-03 03:42:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_send_frame [2022-11-03 03:42:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:42:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure __hci_cmd_sync [2022-11-03 03:42:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __hci_cmd_sync [2022-11-03 03:42:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure ath_close [2022-11-03 03:42:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_close [2022-11-03 03:42:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_crc_update [2022-11-03 03:42:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_crc_update [2022-11-03 03:42:25,594 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:42:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:42:25,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:42:25,594 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:42:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 03:42:25,594 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-11-03 03:42:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-11-03 03:42:25,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 03:42:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 03:42:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure hci_recv_frame [2022-11-03 03:42:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_recv_frame [2022-11-03 03:42:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:42:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure h4_close [2022-11-03 03:42:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_close [2022-11-03 03:42:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2022-11-03 03:42:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2022-11-03 03:42:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure h5_reset_rx [2022-11-03 03:42:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_reset_rx [2022-11-03 03:42:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-03 03:42:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-03 03:42:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure tty_set_termios [2022-11-03 03:42:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_set_termios [2022-11-03 03:42:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure h4_recv [2022-11-03 03:42:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_recv [2022-11-03 03:42:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:42:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:42:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 03:42:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 03:42:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-03 03:42:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-03 03:42:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure ath_recv [2022-11-03 03:42:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_recv [2022-11-03 03:42:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_flush [2022-11-03 03:42:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_flush [2022-11-03 03:42:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure h5_close [2022-11-03 03:42:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_close [2022-11-03 03:42:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_dequeue [2022-11-03 03:42:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_dequeue [2022-11-03 03:42:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 03:42:25,602 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 03:42:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_slip_one_byte [2022-11-03 03:42:25,603 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_slip_one_byte [2022-11-03 03:42:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_open [2022-11-03 03:42:25,603 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_open [2022-11-03 03:42:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure h5_dequeue [2022-11-03 03:42:25,603 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_dequeue [2022-11-03 03:42:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure h5_slip_delim [2022-11-03 03:42:25,603 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_slip_delim [2022-11-03 03:42:25,604 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_close [2022-11-03 03:42:25,604 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_close [2022-11-03 03:42:25,604 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-03 03:42:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-03 03:42:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure ath_enqueue [2022-11-03 03:42:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_enqueue [2022-11-03 03:42:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure h5_open [2022-11-03 03:42:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_open [2022-11-03 03:42:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 03:42:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 03:42:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure ll_enqueue [2022-11-03 03:42:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_enqueue [2022-11-03 03:42:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 03:42:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 03:42:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure h4_recv_buf [2022-11-03 03:42:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_recv_buf [2022-11-03 03:42:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:42:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:42:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:42:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev16 [2022-11-03 03:42:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev16 [2022-11-03 03:42:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-03 03:42:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-03 03:42:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:42:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:42:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure tty_driver_flush_buffer [2022-11-03 03:42:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_driver_flush_buffer [2022-11-03 03:42:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure h5_recv [2022-11-03 03:42:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_recv [2022-11-03 03:42:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure ll_open [2022-11-03 03:42:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_open [2022-11-03 03:42:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tx_wakeup [2022-11-03 03:42:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tx_wakeup [2022-11-03 03:42:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 03:42:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 03:42:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 03:42:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 03:42:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_set_baudrate [2022-11-03 03:42:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_set_baudrate [2022-11-03 03:42:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure ll_flush [2022-11-03 03:42:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_flush [2022-11-03 03:42:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_enqueue [2022-11-03 03:42:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_enqueue [2022-11-03 03:42:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure h5_complete_rx_pkt [2022-11-03 03:42:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_complete_rx_pkt [2022-11-03 03:42:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure ll_recv [2022-11-03 03:42:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_recv [2022-11-03 03:42:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_write_work [2022-11-03 03:42:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_write_work [2022-11-03 03:42:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 03:42:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 03:42:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-03 03:42:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-03 03:42:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 03:42:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 03:42:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_open [2022-11-03 03:42:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_open [2022-11-03 03:42:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_enqueue [2022-11-03 03:42:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_enqueue [2022-11-03 03:42:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 03:42:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 03:42:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:42:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 03:42:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:42:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-03 03:42:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-03 03:42:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure h4_flush [2022-11-03 03:42:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_flush [2022-11-03 03:42:26,600 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:42:26,609 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:42:27,357 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:42:39,924 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:42:41,800 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:42:41,800 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:42:41,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:41 BoogieIcfgContainer [2022-11-03 03:42:41,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:42:41,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:42:41,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:42:41,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:42:41,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:42:19" (1/3) ... [2022-11-03 03:42:41,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b489ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:41, skipping insertion in model container [2022-11-03 03:42:41,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:24" (2/3) ... [2022-11-03 03:42:41,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b489ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:41, skipping insertion in model container [2022-11-03 03:42:41,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:41" (3/3) ... [2022-11-03 03:42:41,815 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2022-11-03 03:42:41,836 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:42:41,836 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:42:41,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:42:41,944 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;@64c21276, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:42:41,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:42:41,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 2225 states, 1367 states have (on average 1.3569861009509876) internal successors, (1855), 1421 states have internal predecessors, (1855), 709 states have call successors, (709), 148 states have call predecessors, (709), 147 states have return successors, (699), 686 states have call predecessors, (699), 699 states have call successors, (699) [2022-11-03 03:42:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 03:42:41,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:41,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:41,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:42,002 INFO L85 PathProgramCache]: Analyzing trace with hash 451103600, now seen corresponding path program 1 times [2022-11-03 03:42:42,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:42,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881809717] [2022-11-03 03:42:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:42,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:42:43,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:43,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881809717] [2022-11-03 03:42:43,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881809717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:43,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:43,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:42:43,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55956959] [2022-11-03 03:42:43,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:43,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:42:43,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:43,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:42:43,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:42:43,641 INFO L87 Difference]: Start difference. First operand has 2225 states, 1367 states have (on average 1.3569861009509876) internal successors, (1855), 1421 states have internal predecessors, (1855), 709 states have call successors, (709), 148 states have call predecessors, (709), 147 states have return successors, (699), 686 states have call predecessors, (699), 699 states have call successors, (699) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 03:42:46,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:42:49,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:42:49,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:49,891 INFO L93 Difference]: Finished difference Result 4619 states and 6852 transitions. [2022-11-03 03:42:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:42:49,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-11-03 03:42:49,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:49,932 INFO L225 Difference]: With dead ends: 4619 [2022-11-03 03:42:49,933 INFO L226 Difference]: Without dead ends: 2368 [2022-11-03 03:42:49,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:42:49,955 INFO L413 NwaCegarLoop]: 3030 mSDtfsCounter, 2952 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2959 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:49,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2959 Valid, 3431 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 402 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-11-03 03:42:49,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2022-11-03 03:42:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2367. [2022-11-03 03:42:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 1460 states have (on average 1.3424657534246576) internal successors, (1960), 1503 states have internal predecessors, (1960), 730 states have call successors, (730), 177 states have call predecessors, (730), 176 states have return successors, (732), 715 states have call predecessors, (732), 729 states have call successors, (732) [2022-11-03 03:42:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 3422 transitions. [2022-11-03 03:42:50,207 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 3422 transitions. Word has length 45 [2022-11-03 03:42:50,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:50,207 INFO L495 AbstractCegarLoop]: Abstraction has 2367 states and 3422 transitions. [2022-11-03 03:42:50,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 03:42:50,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 3422 transitions. [2022-11-03 03:42:50,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 03:42:50,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:50,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:50,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:42:50,223 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:50,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:50,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1966425707, now seen corresponding path program 1 times [2022-11-03 03:42:50,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:50,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211263715] [2022-11-03 03:42:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:50,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 03:42:51,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:51,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211263715] [2022-11-03 03:42:51,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211263715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:51,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:51,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:42:51,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103690632] [2022-11-03 03:42:51,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:51,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:42:51,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:51,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:42:51,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:42:51,658 INFO L87 Difference]: Start difference. First operand 2367 states and 3422 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 03:42:55,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:01,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:02,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:02,684 INFO L93 Difference]: Finished difference Result 4751 states and 6912 transitions. [2022-11-03 03:43:02,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:43:02,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2022-11-03 03:43:02,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:02,702 INFO L225 Difference]: With dead ends: 4751 [2022-11-03 03:43:02,703 INFO L226 Difference]: Without dead ends: 2385 [2022-11-03 03:43:02,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:43:02,716 INFO L413 NwaCegarLoop]: 2915 mSDtfsCounter, 6 mSDsluCounter, 16107 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 17457 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:02,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 17457 Invalid, 1922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1920 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2022-11-03 03:43:02,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2022-11-03 03:43:02,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2373. [2022-11-03 03:43:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 1464 states have (on average 1.3415300546448088) internal successors, (1964), 1507 states have internal predecessors, (1964), 730 states have call successors, (730), 177 states have call predecessors, (730), 178 states have return successors, (737), 717 states have call predecessors, (737), 729 states have call successors, (737) [2022-11-03 03:43:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3431 transitions. [2022-11-03 03:43:02,829 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3431 transitions. Word has length 62 [2022-11-03 03:43:02,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:02,831 INFO L495 AbstractCegarLoop]: Abstraction has 2373 states and 3431 transitions. [2022-11-03 03:43:02,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 03:43:02,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3431 transitions. [2022-11-03 03:43:02,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 03:43:02,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:02,842 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:02,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:43:02,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:02,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:02,852 INFO L85 PathProgramCache]: Analyzing trace with hash 771792319, now seen corresponding path program 1 times [2022-11-03 03:43:02,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:02,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163010700] [2022-11-03 03:43:02,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:02,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 03:43:04,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:04,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163010700] [2022-11-03 03:43:04,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163010700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:04,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:04,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:43:04,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136354084] [2022-11-03 03:43:04,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:04,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:43:04,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:04,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:43:04,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:43:04,019 INFO L87 Difference]: Start difference. First operand 2373 states and 3431 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 03:43:07,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:12,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:14,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:16,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:18,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:18,100 INFO L93 Difference]: Finished difference Result 4758 states and 6920 transitions. [2022-11-03 03:43:18,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:43:18,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 64 [2022-11-03 03:43:18,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:18,119 INFO L225 Difference]: With dead ends: 4758 [2022-11-03 03:43:18,119 INFO L226 Difference]: Without dead ends: 2386 [2022-11-03 03:43:18,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:43:18,136 INFO L413 NwaCegarLoop]: 2907 mSDtfsCounter, 6 mSDsluCounter, 16077 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17414 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:18,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17414 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1926 Invalid, 1 Unknown, 0 Unchecked, 13.9s Time] [2022-11-03 03:43:18,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2022-11-03 03:43:18,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2375. [2022-11-03 03:43:18,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 1466 states have (on average 1.3410641200545703) internal successors, (1966), 1508 states have internal predecessors, (1966), 730 states have call successors, (730), 177 states have call predecessors, (730), 178 states have return successors, (737), 718 states have call predecessors, (737), 729 states have call successors, (737) [2022-11-03 03:43:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3433 transitions. [2022-11-03 03:43:18,254 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3433 transitions. Word has length 64 [2022-11-03 03:43:18,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:18,258 INFO L495 AbstractCegarLoop]: Abstraction has 2375 states and 3433 transitions. [2022-11-03 03:43:18,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 03:43:18,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3433 transitions. [2022-11-03 03:43:18,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 03:43:18,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:18,271 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:18,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:43:18,271 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:18,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:18,272 INFO L85 PathProgramCache]: Analyzing trace with hash 376673855, now seen corresponding path program 1 times [2022-11-03 03:43:18,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:18,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387389997] [2022-11-03 03:43:18,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:18,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:43:18,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:18,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387389997] [2022-11-03 03:43:18,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387389997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:18,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:18,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:18,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184065314] [2022-11-03 03:43:18,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:18,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:18,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:18,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:18,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:18,746 INFO L87 Difference]: Start difference. First operand 2375 states and 3433 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:43:21,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:26,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:26,850 INFO L93 Difference]: Finished difference Result 7059 states and 10198 transitions. [2022-11-03 03:43:26,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:26,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 84 [2022-11-03 03:43:26,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:26,880 INFO L225 Difference]: With dead ends: 7059 [2022-11-03 03:43:26,881 INFO L226 Difference]: Without dead ends: 4685 [2022-11-03 03:43:26,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:26,894 INFO L413 NwaCegarLoop]: 3572 mSDtfsCounter, 3105 mSDsluCounter, 3183 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3109 SdHoareTripleChecker+Valid, 6443 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:26,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3109 Valid, 6443 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 659 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2022-11-03 03:43:26,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4685 states. [2022-11-03 03:43:27,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4685 to 4681. [2022-11-03 03:43:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4681 states, 2888 states have (on average 1.3403739612188366) internal successors, (3871), 2972 states have internal predecessors, (3871), 1438 states have call successors, (1438), 351 states have call predecessors, (1438), 354 states have return successors, (1453), 1415 states have call predecessors, (1453), 1437 states have call successors, (1453) [2022-11-03 03:43:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4681 states to 4681 states and 6762 transitions. [2022-11-03 03:43:27,132 INFO L78 Accepts]: Start accepts. Automaton has 4681 states and 6762 transitions. Word has length 84 [2022-11-03 03:43:27,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:27,132 INFO L495 AbstractCegarLoop]: Abstraction has 4681 states and 6762 transitions. [2022-11-03 03:43:27,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:43:27,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4681 states and 6762 transitions. [2022-11-03 03:43:27,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 03:43:27,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:27,143 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:27,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:43:27,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:27,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:27,144 INFO L85 PathProgramCache]: Analyzing trace with hash 70984508, now seen corresponding path program 1 times [2022-11-03 03:43:27,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:27,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032607115] [2022-11-03 03:43:27,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:27,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:43:27,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:27,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032607115] [2022-11-03 03:43:27,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032607115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:27,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:27,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:27,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293074976] [2022-11-03 03:43:27,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:27,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:27,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:27,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:27,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:27,719 INFO L87 Difference]: Start difference. First operand 4681 states and 6762 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 03:43:30,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:32,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:33,374 INFO L93 Difference]: Finished difference Result 9389 states and 13549 transitions. [2022-11-03 03:43:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:33,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 70 [2022-11-03 03:43:33,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:33,412 INFO L225 Difference]: With dead ends: 9389 [2022-11-03 03:43:33,412 INFO L226 Difference]: Without dead ends: 4709 [2022-11-03 03:43:33,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:33,440 INFO L413 NwaCegarLoop]: 2899 mSDtfsCounter, 3148 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3156 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:33,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3156 Valid, 2954 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 325 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2022-11-03 03:43:33,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2022-11-03 03:43:33,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 4709. [2022-11-03 03:43:33,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4709 states, 2904 states have (on average 1.3391873278236914) internal successors, (3889), 2990 states have internal predecessors, (3889), 1440 states have call successors, (1440), 359 states have call predecessors, (1440), 364 states have return successors, (1457), 1417 states have call predecessors, (1457), 1439 states have call successors, (1457) [2022-11-03 03:43:33,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4709 states to 4709 states and 6786 transitions. [2022-11-03 03:43:33,760 INFO L78 Accepts]: Start accepts. Automaton has 4709 states and 6786 transitions. Word has length 70 [2022-11-03 03:43:33,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:33,760 INFO L495 AbstractCegarLoop]: Abstraction has 4709 states and 6786 transitions. [2022-11-03 03:43:33,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 03:43:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4709 states and 6786 transitions. [2022-11-03 03:43:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 03:43:33,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:33,770 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:33,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:43:33,770 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:33,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:33,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1492720877, now seen corresponding path program 1 times [2022-11-03 03:43:33,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:33,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704239418] [2022-11-03 03:43:33,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:33,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:43:34,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:34,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704239418] [2022-11-03 03:43:34,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704239418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:34,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:34,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:34,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944102777] [2022-11-03 03:43:34,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:34,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:34,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:34,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:34,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:34,287 INFO L87 Difference]: Start difference. First operand 4709 states and 6786 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 03:43:36,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:39,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:40,016 INFO L93 Difference]: Finished difference Result 9413 states and 13565 transitions. [2022-11-03 03:43:40,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:40,016 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), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-11-03 03:43:40,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:40,041 INFO L225 Difference]: With dead ends: 9413 [2022-11-03 03:43:40,042 INFO L226 Difference]: Without dead ends: 4705 [2022-11-03 03:43:40,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:40,063 INFO L413 NwaCegarLoop]: 2895 mSDtfsCounter, 3141 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3149 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:40,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3149 Valid, 2950 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 325 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 03:43:40,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4705 states. [2022-11-03 03:43:40,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4705 to 4705. [2022-11-03 03:43:40,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4705 states, 2902 states have (on average 1.3387319090282563) internal successors, (3885), 2988 states have internal predecessors, (3885), 1438 states have call successors, (1438), 359 states have call predecessors, (1438), 364 states have return successors, (1455), 1415 states have call predecessors, (1455), 1437 states have call successors, (1455) [2022-11-03 03:43:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4705 states to 4705 states and 6778 transitions. [2022-11-03 03:43:40,404 INFO L78 Accepts]: Start accepts. Automaton has 4705 states and 6778 transitions. Word has length 73 [2022-11-03 03:43:40,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:40,405 INFO L495 AbstractCegarLoop]: Abstraction has 4705 states and 6778 transitions. [2022-11-03 03:43:40,405 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), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 03:43:40,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4705 states and 6778 transitions. [2022-11-03 03:43:40,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 03:43:40,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:40,415 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:40,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:43:40,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:40,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:40,416 INFO L85 PathProgramCache]: Analyzing trace with hash 27051475, now seen corresponding path program 1 times [2022-11-03 03:43:40,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:40,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158033927] [2022-11-03 03:43:40,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:40,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:43:40,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:40,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158033927] [2022-11-03 03:43:40,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158033927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:40,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:40,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:40,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510344492] [2022-11-03 03:43:40,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:40,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:40,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:40,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:40,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:40,935 INFO L87 Difference]: Start difference. First operand 4705 states and 6778 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 03:43:43,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:46,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:46,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:46,594 INFO L93 Difference]: Finished difference Result 9405 states and 13549 transitions. [2022-11-03 03:43:46,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:46,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2022-11-03 03:43:46,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:46,621 INFO L225 Difference]: With dead ends: 9405 [2022-11-03 03:43:46,622 INFO L226 Difference]: Without dead ends: 4701 [2022-11-03 03:43:46,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:46,641 INFO L413 NwaCegarLoop]: 2891 mSDtfsCounter, 3138 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:46,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3146 Valid, 2946 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 325 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 03:43:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2022-11-03 03:43:46,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 4701. [2022-11-03 03:43:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4701 states, 2900 states have (on average 1.3382758620689654) internal successors, (3881), 2986 states have internal predecessors, (3881), 1436 states have call successors, (1436), 359 states have call predecessors, (1436), 364 states have return successors, (1453), 1413 states have call predecessors, (1453), 1435 states have call successors, (1453) [2022-11-03 03:43:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4701 states to 4701 states and 6770 transitions. [2022-11-03 03:43:47,005 INFO L78 Accepts]: Start accepts. Automaton has 4701 states and 6770 transitions. Word has length 72 [2022-11-03 03:43:47,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:47,008 INFO L495 AbstractCegarLoop]: Abstraction has 4701 states and 6770 transitions. [2022-11-03 03:43:47,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 03:43:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 4701 states and 6770 transitions. [2022-11-03 03:43:47,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 03:43:47,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:47,023 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:47,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:43:47,023 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:47,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:47,024 INFO L85 PathProgramCache]: Analyzing trace with hash 822707612, now seen corresponding path program 1 times [2022-11-03 03:43:47,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:47,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659359958] [2022-11-03 03:43:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:47,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:43:47,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:47,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659359958] [2022-11-03 03:43:47,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659359958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:47,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:47,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:47,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751947444] [2022-11-03 03:43:47,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:47,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:47,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:47,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:47,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:47,466 INFO L87 Difference]: Start difference. First operand 4701 states and 6770 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 03:43:49,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:51,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:51,444 INFO L93 Difference]: Finished difference Result 9399 states and 13534 transitions. [2022-11-03 03:43:51,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:51,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2022-11-03 03:43:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:51,469 INFO L225 Difference]: With dead ends: 9399 [2022-11-03 03:43:51,469 INFO L226 Difference]: Without dead ends: 4699 [2022-11-03 03:43:51,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:51,481 INFO L413 NwaCegarLoop]: 2885 mSDtfsCounter, 3179 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3183 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:51,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3183 Valid, 2890 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 319 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-03 03:43:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4699 states. [2022-11-03 03:43:51,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4699 to 4699. [2022-11-03 03:43:51,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4699 states, 2899 states have (on average 1.3377026560883063) internal successors, (3878), 2985 states have internal predecessors, (3878), 1434 states have call successors, (1434), 360 states have call predecessors, (1434), 365 states have return successors, (1451), 1411 states have call predecessors, (1451), 1433 states have call successors, (1451) [2022-11-03 03:43:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4699 states to 4699 states and 6763 transitions. [2022-11-03 03:43:51,886 INFO L78 Accepts]: Start accepts. Automaton has 4699 states and 6763 transitions. Word has length 71 [2022-11-03 03:43:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:51,887 INFO L495 AbstractCegarLoop]: Abstraction has 4699 states and 6763 transitions. [2022-11-03 03:43:51,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 03:43:51,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4699 states and 6763 transitions. [2022-11-03 03:43:51,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 03:43:51,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:51,896 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:51,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:43:51,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:51,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:51,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1265073631, now seen corresponding path program 1 times [2022-11-03 03:43:51,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:51,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38447018] [2022-11-03 03:43:51,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:51,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 03:43:52,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:43:52,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38447018] [2022-11-03 03:43:52,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38447018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:52,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:52,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:43:52,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39831257] [2022-11-03 03:43:52,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:52,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:52,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:43:52,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:43:52,138 INFO L87 Difference]: Start difference. First operand 4699 states and 6763 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:43:54,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:43:57,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:00,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:00,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:00,564 INFO L93 Difference]: Finished difference Result 13988 states and 20119 transitions. [2022-11-03 03:44:00,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:00,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 100 [2022-11-03 03:44:00,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:00,612 INFO L225 Difference]: With dead ends: 13988 [2022-11-03 03:44:00,612 INFO L226 Difference]: Without dead ends: 9290 [2022-11-03 03:44:00,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:00,627 INFO L413 NwaCegarLoop]: 3613 mSDtfsCounter, 3096 mSDsluCounter, 3167 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 6469 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:00,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3100 Valid, 6469 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 661 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2022-11-03 03:44:00,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9290 states. [2022-11-03 03:44:01,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9290 to 9285. [2022-11-03 03:44:01,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9285 states, 5722 states have (on average 1.3362460678084587) internal successors, (7646), 5895 states have internal predecessors, (7646), 2835 states have call successors, (2835), 716 states have call predecessors, (2835), 727 states have return successors, (2870), 2789 states have call predecessors, (2870), 2834 states have call successors, (2870) [2022-11-03 03:44:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9285 states to 9285 states and 13351 transitions. [2022-11-03 03:44:01,315 INFO L78 Accepts]: Start accepts. Automaton has 9285 states and 13351 transitions. Word has length 100 [2022-11-03 03:44:01,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:01,315 INFO L495 AbstractCegarLoop]: Abstraction has 9285 states and 13351 transitions. [2022-11-03 03:44:01,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:44:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 9285 states and 13351 transitions. [2022-11-03 03:44:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-03 03:44:01,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:01,324 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:01,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:44:01,325 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:01,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:01,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1511851994, now seen corresponding path program 1 times [2022-11-03 03:44:01,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:01,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733106919] [2022-11-03 03:44:01,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:01,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 03:44:01,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:01,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733106919] [2022-11-03 03:44:01,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733106919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:01,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:01,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:01,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695715821] [2022-11-03 03:44:01,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:01,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:01,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:01,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:01,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:01,563 INFO L87 Difference]: Start difference. First operand 9285 states and 13351 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:44:03,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:07,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:08,795 INFO L93 Difference]: Finished difference Result 27473 states and 39498 transitions. [2022-11-03 03:44:08,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:08,796 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), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 107 [2022-11-03 03:44:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:08,888 INFO L225 Difference]: With dead ends: 27473 [2022-11-03 03:44:08,888 INFO L226 Difference]: Without dead ends: 18189 [2022-11-03 03:44:08,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:08,929 INFO L413 NwaCegarLoop]: 3657 mSDtfsCounter, 3042 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 6513 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:08,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 6513 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 663 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-11-03 03:44:08,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18189 states. [2022-11-03 03:44:10,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18189 to 18163. [2022-11-03 03:44:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18163 states, 11182 states have (on average 1.3355392595242355) internal successors, (14934), 11529 states have internal predecessors, (14934), 5557 states have call successors, (5557), 1404 states have call predecessors, (5557), 1423 states have return successors, (5628), 5461 states have call predecessors, (5628), 5556 states have call successors, (5628) [2022-11-03 03:44:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18163 states to 18163 states and 26119 transitions. [2022-11-03 03:44:10,194 INFO L78 Accepts]: Start accepts. Automaton has 18163 states and 26119 transitions. Word has length 107 [2022-11-03 03:44:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:10,194 INFO L495 AbstractCegarLoop]: Abstraction has 18163 states and 26119 transitions. [2022-11-03 03:44:10,194 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), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:44:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 18163 states and 26119 transitions. [2022-11-03 03:44:10,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-03 03:44:10,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:10,203 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:10,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:44:10,203 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:10,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:10,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1197151970, now seen corresponding path program 1 times [2022-11-03 03:44:10,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:10,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101691379] [2022-11-03 03:44:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:10,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:44:10,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:10,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101691379] [2022-11-03 03:44:10,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101691379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:10,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:10,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:10,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036952274] [2022-11-03 03:44:10,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:10,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:10,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:10,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:10,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:10,566 INFO L87 Difference]: Start difference. First operand 18163 states and 26119 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:44:12,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:17,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:20,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:20,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:20,874 INFO L93 Difference]: Finished difference Result 53676 states and 77024 transitions. [2022-11-03 03:44:20,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:20,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2022-11-03 03:44:20,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:21,134 INFO L225 Difference]: With dead ends: 53676 [2022-11-03 03:44:21,135 INFO L226 Difference]: Without dead ends: 35514 [2022-11-03 03:44:21,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:21,196 INFO L413 NwaCegarLoop]: 3720 mSDtfsCounter, 3011 mSDsluCounter, 3116 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3015 SdHoareTripleChecker+Valid, 6529 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:21,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3015 Valid, 6529 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 716 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2022-11-03 03:44:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35514 states. [2022-11-03 03:44:23,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35514 to 35509. [2022-11-03 03:44:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35509 states, 21795 states have (on average 1.3303509979353063) internal successors, (28995), 22490 states have internal predecessors, (28995), 10878 states have call successors, (10878), 2796 states have call predecessors, (10878), 2835 states have return successors, (11021), 10686 states have call predecessors, (11021), 10877 states have call successors, (11021) [2022-11-03 03:44:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35509 states to 35509 states and 50894 transitions. [2022-11-03 03:44:23,977 INFO L78 Accepts]: Start accepts. Automaton has 35509 states and 50894 transitions. Word has length 124 [2022-11-03 03:44:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:23,978 INFO L495 AbstractCegarLoop]: Abstraction has 35509 states and 50894 transitions. [2022-11-03 03:44:23,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:44:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 35509 states and 50894 transitions. [2022-11-03 03:44:23,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-03 03:44:23,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:23,985 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:23,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:44:23,986 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:23,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:23,987 INFO L85 PathProgramCache]: Analyzing trace with hash -247762056, now seen corresponding path program 1 times [2022-11-03 03:44:23,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:23,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953131578] [2022-11-03 03:44:23,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:23,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:44:24,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:24,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953131578] [2022-11-03 03:44:24,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953131578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:24,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:24,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:24,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054661434] [2022-11-03 03:44:24,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:24,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:24,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:24,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:24,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:24,489 INFO L87 Difference]: Start difference. First operand 35509 states and 50894 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:44:26,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:33,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:35,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:35,234 INFO L93 Difference]: Finished difference Result 105787 states and 151474 transitions. [2022-11-03 03:44:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:35,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 125 [2022-11-03 03:44:35,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:35,863 INFO L225 Difference]: With dead ends: 105787 [2022-11-03 03:44:35,863 INFO L226 Difference]: Without dead ends: 70279 [2022-11-03 03:44:36,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:36,008 INFO L413 NwaCegarLoop]: 3993 mSDtfsCounter, 3101 mSDsluCounter, 3167 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3105 SdHoareTripleChecker+Valid, 6849 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:36,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3105 Valid, 6849 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 697 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 03:44:36,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70279 states. [2022-11-03 03:44:40,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70279 to 70273. [2022-11-03 03:44:40,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70273 states, 43065 states have (on average 1.3280622315105073) internal successors, (57193), 44456 states have internal predecessors, (57193), 21540 states have call successors, (21540), 5588 states have call predecessors, (21540), 5667 states have return successors, (21827), 21156 states have call predecessors, (21827), 21539 states have call successors, (21827) [2022-11-03 03:44:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70273 states to 70273 states and 100560 transitions. [2022-11-03 03:44:41,540 INFO L78 Accepts]: Start accepts. Automaton has 70273 states and 100560 transitions. Word has length 125 [2022-11-03 03:44:41,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:41,541 INFO L495 AbstractCegarLoop]: Abstraction has 70273 states and 100560 transitions. [2022-11-03 03:44:41,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:44:41,541 INFO L276 IsEmpty]: Start isEmpty. Operand 70273 states and 100560 transitions. [2022-11-03 03:44:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 03:44:41,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:41,549 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:41,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:44:41,550 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:41,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:41,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1238310376, now seen corresponding path program 1 times [2022-11-03 03:44:41,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:44:41,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381011399] [2022-11-03 03:44:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:41,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:44:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 03:44:41,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:44:41,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381011399] [2022-11-03 03:44:41,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381011399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:41,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:41,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:44:41,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986202228] [2022-11-03 03:44:41,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:41,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:44:41,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:44:41,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:44:41,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:41,849 INFO L87 Difference]: Start difference. First operand 70273 states and 100560 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:44:44,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:52,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:44:56,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:56,483 INFO L93 Difference]: Finished difference Result 206297 states and 294483 transitions. [2022-11-03 03:44:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:44:56,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2022-11-03 03:44:56,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:57,711 INFO L225 Difference]: With dead ends: 206297 [2022-11-03 03:44:57,711 INFO L226 Difference]: Without dead ends: 136025 [2022-11-03 03:44:57,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:44:57,928 INFO L413 NwaCegarLoop]: 3565 mSDtfsCounter, 2940 mSDsluCounter, 3100 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 6359 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:57,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 6359 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 723 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2022-11-03 03:44:58,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136025 states.