./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 e04fb08f 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_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/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_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0 --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-e04fb08 [2022-11-16 20:34:45,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:34:45,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:34:45,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:34:45,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:34:45,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:34:45,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:34:45,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:34:45,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:34:45,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:34:45,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:34:45,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:34:45,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:34:45,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:34:45,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:34:45,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:34:45,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:34:45,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:34:45,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:34:45,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:34:45,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:34:45,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:34:45,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:34:45,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:34:45,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:34:45,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:34:45,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:34:45,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:34:45,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:34:45,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:34:45,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:34:45,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:34:45,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:34:45,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:34:45,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:34:45,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:34:45,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:34:45,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:34:45,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:34:45,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:34:45,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:34:45,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 20:34:45,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:34:45,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:34:45,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:34:45,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:34:45,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:34:45,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:34:45,855 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:34:45,856 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:34:45,856 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:34:45,856 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:34:45,856 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:34:45,856 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:34:45,857 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:34:45,857 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:34:45,857 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:34:45,857 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:34:45,857 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:34:45,858 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:34:45,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:34:45,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:34:45,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:34:45,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:34:45,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:34:45,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:34:45,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:34:45,868 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:34:45,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:34:45,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:34:45,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:34:45,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:34:45,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:34:45,870 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:34:45,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:34:45,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:34:45,873 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:34:45,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:34:45,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:34:45,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:34:45,873 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_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d [2022-11-16 20:34:46,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:34:46,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:34:46,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:34:46,255 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:34:46,259 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:34:46,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/../../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 [2022-11-16 20:34:46,354 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/data/c74175777/b80e3d4602c645e3a57fb2a5ff984aef/FLAG4123dc597 [2022-11-16 20:34:47,449 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:34:47,449 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/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 [2022-11-16 20:34:47,551 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/data/c74175777/b80e3d4602c645e3a57fb2a5ff984aef/FLAG4123dc597 [2022-11-16 20:34:47,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/data/c74175777/b80e3d4602c645e3a57fb2a5ff984aef [2022-11-16 20:34:47,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:34:47,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:34:47,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:34:47,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:34:47,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:34:47,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:34:47" (1/1) ... [2022-11-16 20:34:47,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309fe72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:47, skipping insertion in model container [2022-11-16 20:34:47,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:34:47" (1/1) ... [2022-11-16 20:34:47,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:34:47,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:34:52,363 WARN L229 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_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/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] [2022-11-16 20:34:52,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:34:52,455 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:34:53,151 WARN L229 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_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/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] [2022-11-16 20:34:53,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:34:53,427 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:34:53,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:53 WrapperNode [2022-11-16 20:34:53,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:34:53,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:34:53,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:34:53,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:34:53,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:53" (1/1) ... [2022-11-16 20:34:53,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:53" (1/1) ... [2022-11-16 20:34:53,802 INFO L138 Inliner]: procedures = 490, calls = 4855, calls flagged for inlining = 140, calls inlined = 118, statements flattened = 7470 [2022-11-16 20:34:53,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:34:53,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:34:53,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:34:53,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:34:53,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:53" (1/1) ... [2022-11-16 20:34:53,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:53" (1/1) ... [2022-11-16 20:34:53,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:53" (1/1) ... [2022-11-16 20:34:53,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:53" (1/1) ... [2022-11-16 20:34:54,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:53" (1/1) ... [2022-11-16 20:34:54,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:53" (1/1) ... [2022-11-16 20:34:54,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:53" (1/1) ... [2022-11-16 20:34:54,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:53" (1/1) ... [2022-11-16 20:34:54,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:34:54,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:34:54,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:34:54,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:34:54,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:53" (1/1) ... [2022-11-16 20:34:54,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:34:54,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:34:54,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:34:54,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62b5e9e7-0ecc-4890-8779-6c0f998b48b3/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:34:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-11-16 20:34:54,342 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-11-16 20:34:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_prepare_pkt [2022-11-16 20:34:54,342 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_prepare_pkt [2022-11-16 20:34:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-16 20:34:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-16 20:34:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-16 20:34:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-16 20:34:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_setup [2022-11-16 20:34:54,344 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_setup [2022-11-16 20:34:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-16 20:34:54,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-16 20:34:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 20:34:54,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 20:34:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure ll_dequeue [2022-11-16 20:34:54,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_dequeue [2022-11-16 20:34:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_close [2022-11-16 20:34:54,345 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_close [2022-11-16 20:34:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-11-16 20:34:54,345 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-11-16 20:34:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-16 20:34:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-16 20:34:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-16 20:34:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-16 20:34:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_flush [2022-11-16 20:34:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_flush [2022-11-16 20:34:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure ath_dequeue [2022-11-16 20:34:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_dequeue [2022-11-16 20:34:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-16 20:34:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-16 20:34:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 20:34:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure h5_link_control [2022-11-16 20:34:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_link_control [2022-11-16 20:34:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-16 20:34:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-16 20:34:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-16 20:34:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-16 20:34:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure bt_skb_alloc___1 [2022-11-16 20:34:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure bt_skb_alloc___1 [2022-11-16 20:34:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2022-11-16 20:34:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2022-11-16 20:34:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:34:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure h4_enqueue [2022-11-16 20:34:54,350 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_enqueue [2022-11-16 20:34:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-16 20:34:54,350 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-16 20:34:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure ath_hci_uart_work [2022-11-16 20:34:54,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_hci_uart_work [2022-11-16 20:34:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure btbcm_set_bdaddr [2022-11-16 20:34:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_setup [2022-11-16 20:34:54,351 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_setup [2022-11-16 20:34:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 20:34:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-16 20:34:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-16 20:34:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 20:34:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure __ll_do_awake [2022-11-16 20:34:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __ll_do_awake [2022-11-16 20:34:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_4 [2022-11-16 20:34:54,353 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_4 [2022-11-16 20:34:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure h5_peer_reset [2022-11-16 20:34:54,353 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_peer_reset [2022-11-16 20:34:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 20:34:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure h5_enqueue [2022-11-16 20:34:54,353 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_enqueue [2022-11-16 20:34:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_complete_rx_pkt [2022-11-16 20:34:54,354 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_complete_rx_pkt [2022-11-16 20:34:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-16 20:34:54,354 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-16 20:34:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_unregister_proto [2022-11-16 20:34:54,355 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_unregister_proto [2022-11-16 20:34:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-16 20:34:54,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-16 20:34:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure hci_get_drvdata [2022-11-16 20:34:54,355 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_get_drvdata [2022-11-16 20:34:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_close [2022-11-16 20:34:54,356 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_close [2022-11-16 20:34:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure btintel_set_bdaddr [2022-11-16 20:34:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2022-11-16 20:34:54,356 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2022-11-16 20:34:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_recv [2022-11-16 20:34:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_recv [2022-11-16 20:34:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_register_proto [2022-11-16 20:34:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_register_proto [2022-11-16 20:34:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_recv [2022-11-16 20:34:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_recv [2022-11-16 20:34:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-16 20:34:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-16 20:34:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_flush [2022-11-16 20:34:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_flush [2022-11-16 20:34:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 20:34:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2022-11-16 20:34:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2022-11-16 20:34:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev8 [2022-11-16 20:34:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev8 [2022-11-16 20:34:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:34:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure bscp_get_crc [2022-11-16 20:34:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure bscp_get_crc [2022-11-16 20:34:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-16 20:34:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-16 20:34:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 20:34:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 20:34:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 20:34:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_4 [2022-11-16 20:34:54,361 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_4 [2022-11-16 20:34:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_init_work [2022-11-16 20:34:54,361 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_init_work [2022-11-16 20:34:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure ll_close [2022-11-16 20:34:54,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_close [2022-11-16 20:34:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-16 20:34:54,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-16 20:34:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure hci_register_dev [2022-11-16 20:34:54,362 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_register_dev [2022-11-16 20:34:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure send_hcill_cmd [2022-11-16 20:34:54,363 INFO L138 BoogieDeclarations]: Found implementation of procedure send_hcill_cmd [2022-11-16 20:34:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-16 20:34:54,363 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-16 20:34:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure ath_flush [2022-11-16 20:34:54,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_flush [2022-11-16 20:34:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_slip_msgdelim [2022-11-16 20:34:54,364 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_slip_msgdelim [2022-11-16 20:34:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure h4_dequeue [2022-11-16 20:34:54,364 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_dequeue [2022-11-16 20:34:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure ath_wakeup_ar3k [2022-11-16 20:34:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_wakeup_ar3k [2022-11-16 20:34:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure h5_prepare_pkt [2022-11-16 20:34:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_prepare_pkt [2022-11-16 20:34:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-11-16 20:34:54,365 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-11-16 20:34:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-16 20:34:54,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-16 20:34:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_open [2022-11-16 20:34:54,366 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_open [2022-11-16 20:34:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-16 20:34:54,367 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-16 20:34:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_close [2022-11-16 20:34:54,367 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_close [2022-11-16 20:34:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-16 20:34:54,367 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-16 20:34:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure h5_cfg_field [2022-11-16 20:34:54,368 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_cfg_field [2022-11-16 20:34:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:34:54,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:34:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-16 20:34:54,368 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-16 20:34:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure h5_flush [2022-11-16 20:34:54,369 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_flush [2022-11-16 20:34:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-16 20:34:54,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-16 20:34:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure ll_check_data_len [2022-11-16 20:34:54,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_check_data_len [2022-11-16 20:34:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-11-16 20:34:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-11-16 20:34:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 20:34:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 20:34:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-16 20:34:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-16 20:34:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure h5_slip_one_byte [2022-11-16 20:34:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_slip_one_byte [2022-11-16 20:34:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-11-16 20:34:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-11-16 20:34:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2022-11-16 20:34:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2022-11-16 20:34:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_set_baudrate [2022-11-16 20:34:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_set_baudrate [2022-11-16 20:34:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2022-11-16 20:34:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2022-11-16 20:34:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2022-11-16 20:34:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2022-11-16 20:34:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure ath_open [2022-11-16 20:34:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_open [2022-11-16 20:34:54,373 INFO L130 BoogieDeclarations]: Found specification of procedure ath_setup [2022-11-16 20:34:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_setup [2022-11-16 20:34:54,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-16 20:34:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-16 20:34:54,373 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_dequeue [2022-11-16 20:34:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_dequeue [2022-11-16 20:34:54,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 20:34:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 20:34:54,374 INFO L130 BoogieDeclarations]: Found specification of procedure hci_free_dev [2022-11-16 20:34:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_free_dev [2022-11-16 20:34:54,374 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head [2022-11-16 20:34:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head [2022-11-16 20:34:54,375 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 20:34:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 20:34:54,375 INFO L130 BoogieDeclarations]: Found specification of procedure h4_open [2022-11-16 20:34:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_open [2022-11-16 20:34:54,375 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-16 20:34:54,376 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-16 20:34:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-16 20:34:54,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-16 20:34:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_send_frame [2022-11-16 20:34:54,376 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_send_frame [2022-11-16 20:34:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 20:34:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure __hci_cmd_sync [2022-11-16 20:34:54,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __hci_cmd_sync [2022-11-16 20:34:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure ath_close [2022-11-16 20:34:54,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_close [2022-11-16 20:34:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_crc_update [2022-11-16 20:34:54,377 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_crc_update [2022-11-16 20:34:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-16 20:34:54,378 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-16 20:34:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 20:34:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-16 20:34:54,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-16 20:34:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-11-16 20:34:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-11-16 20:34:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-16 20:34:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-16 20:34:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure hci_recv_frame [2022-11-16 20:34:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_recv_frame [2022-11-16 20:34:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 20:34:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure h4_close [2022-11-16 20:34:54,380 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_close [2022-11-16 20:34:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2022-11-16 20:34:54,380 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2022-11-16 20:34:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure h5_reset_rx [2022-11-16 20:34:54,380 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_reset_rx [2022-11-16 20:34:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-16 20:34:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-16 20:34:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure tty_set_termios [2022-11-16 20:34:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_set_termios [2022-11-16 20:34:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure h4_recv [2022-11-16 20:34:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_recv [2022-11-16 20:34:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-16 20:34:54,382 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-16 20:34:54,382 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-16 20:34:54,382 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-16 20:34:54,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-16 20:34:54,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-16 20:34:54,382 INFO L130 BoogieDeclarations]: Found specification of procedure ath_recv [2022-11-16 20:34:54,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_recv [2022-11-16 20:34:54,383 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_flush [2022-11-16 20:34:54,383 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_flush [2022-11-16 20:34:54,383 INFO L130 BoogieDeclarations]: Found specification of procedure h5_close [2022-11-16 20:34:54,383 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_close [2022-11-16 20:34:54,383 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_dequeue [2022-11-16 20:34:54,383 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_dequeue [2022-11-16 20:34:54,384 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-16 20:34:54,384 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-16 20:34:54,384 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_slip_one_byte [2022-11-16 20:34:54,384 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_slip_one_byte [2022-11-16 20:34:54,384 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_open [2022-11-16 20:34:54,384 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_open [2022-11-16 20:34:54,385 INFO L130 BoogieDeclarations]: Found specification of procedure h5_dequeue [2022-11-16 20:34:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_dequeue [2022-11-16 20:34:54,385 INFO L130 BoogieDeclarations]: Found specification of procedure h5_slip_delim [2022-11-16 20:34:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_slip_delim [2022-11-16 20:34:54,385 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_close [2022-11-16 20:34:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_close [2022-11-16 20:34:54,386 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-16 20:34:54,386 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-16 20:34:54,386 INFO L130 BoogieDeclarations]: Found specification of procedure ath_enqueue [2022-11-16 20:34:54,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_enqueue [2022-11-16 20:34:54,386 INFO L130 BoogieDeclarations]: Found specification of procedure h5_open [2022-11-16 20:34:54,386 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_open [2022-11-16 20:34:54,387 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-16 20:34:54,387 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-16 20:34:54,387 INFO L130 BoogieDeclarations]: Found specification of procedure ll_enqueue [2022-11-16 20:34:54,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_enqueue [2022-11-16 20:34:54,387 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-16 20:34:54,387 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-16 20:34:54,388 INFO L130 BoogieDeclarations]: Found specification of procedure h4_recv_buf [2022-11-16 20:34:54,388 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_recv_buf [2022-11-16 20:34:54,388 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 20:34:54,388 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 20:34:54,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 20:34:54,388 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev16 [2022-11-16 20:34:54,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev16 [2022-11-16 20:34:54,389 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-16 20:34:54,389 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-16 20:34:54,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 20:34:54,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 20:34:54,389 INFO L130 BoogieDeclarations]: Found specification of procedure tty_driver_flush_buffer [2022-11-16 20:34:54,390 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_driver_flush_buffer [2022-11-16 20:34:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure h5_recv [2022-11-16 20:34:54,390 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_recv [2022-11-16 20:34:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure ll_open [2022-11-16 20:34:54,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_open [2022-11-16 20:34:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tx_wakeup [2022-11-16 20:34:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tx_wakeup [2022-11-16 20:34:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-16 20:34:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-16 20:34:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-16 20:34:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-16 20:34:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_set_baudrate [2022-11-16 20:34:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_set_baudrate [2022-11-16 20:34:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure ll_flush [2022-11-16 20:34:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_flush [2022-11-16 20:34:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_enqueue [2022-11-16 20:34:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_enqueue [2022-11-16 20:34:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure h5_complete_rx_pkt [2022-11-16 20:34:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_complete_rx_pkt [2022-11-16 20:34:54,393 INFO L130 BoogieDeclarations]: Found specification of procedure ll_recv [2022-11-16 20:34:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_recv [2022-11-16 20:34:54,393 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_write_work [2022-11-16 20:34:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_write_work [2022-11-16 20:34:54,393 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-16 20:34:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-16 20:34:54,393 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-16 20:34:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-16 20:34:54,394 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-16 20:34:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-16 20:34:54,394 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_open [2022-11-16 20:34:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_open [2022-11-16 20:34:54,394 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_enqueue [2022-11-16 20:34:54,395 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_enqueue [2022-11-16 20:34:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-16 20:34:54,395 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-16 20:34:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 20:34:54,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 20:34:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:34:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-16 20:34:54,396 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-16 20:34:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure h4_flush [2022-11-16 20:34:54,396 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_flush [2022-11-16 20:34:55,393 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:34:55,401 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:34:56,230 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-16 20:35:09,393 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:35:11,726 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:35:11,726 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 20:35:11,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:35:11 BoogieIcfgContainer [2022-11-16 20:35:11,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:35:11,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:35:11,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:35:11,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:35:11,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:34:47" (1/3) ... [2022-11-16 20:35:11,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf9e578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:35:11, skipping insertion in model container [2022-11-16 20:35:11,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:34:53" (2/3) ... [2022-11-16 20:35:11,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf9e578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:35:11, skipping insertion in model container [2022-11-16 20:35:11,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:35:11" (3/3) ... [2022-11-16 20:35:11,745 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2022-11-16 20:35:11,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:35:11,766 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:35:11,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:35:11,917 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;@399076de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:35:11,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:35:11,930 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) [2022-11-16 20:35:11,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 20:35:11,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:11,971 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] [2022-11-16 20:35:11,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:11,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:11,980 INFO L85 PathProgramCache]: Analyzing trace with hash -749166710, now seen corresponding path program 1 times [2022-11-16 20:35:11,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:35:11,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744281327] [2022-11-16 20:35:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:11,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:35:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:13,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:35:13,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744281327] [2022-11-16 20:35:13,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744281327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:35:13,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:35:13,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:35:13,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303643787] [2022-11-16 20:35:13,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:35:13,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:35:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:35:13,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:35:13,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:35:13,862 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) [2022-11-16 20:35:16,615 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 [] [2022-11-16 20:35:21,543 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 [] [2022-11-16 20:35:21,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:35:21,926 INFO L93 Difference]: Finished difference Result 4619 states and 6852 transitions. [2022-11-16 20:35:21,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:35:21,929 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 [2022-11-16 20:35:21,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:35:21,967 INFO L225 Difference]: With dead ends: 4619 [2022-11-16 20:35:21,967 INFO L226 Difference]: Without dead ends: 2368 [2022-11-16 20:35:21,990 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 [2022-11-16 20:35:21,993 INFO L413 NwaCegarLoop]: 3031 mSDtfsCounter, 2952 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2959 SdHoareTripleChecker+Valid, 3430 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:35:21,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2959 Valid, 3430 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 405 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2022-11-16 20:35:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2022-11-16 20:35:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2367. [2022-11-16 20:35:22,182 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) [2022-11-16 20:35:22,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 3422 transitions. [2022-11-16 20:35:22,206 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 3422 transitions. Word has length 45 [2022-11-16 20:35:22,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:35:22,206 INFO L495 AbstractCegarLoop]: Abstraction has 2367 states and 3422 transitions. [2022-11-16 20:35:22,207 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) [2022-11-16 20:35:22,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 3422 transitions. [2022-11-16 20:35:22,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 20:35:22,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:22,218 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] [2022-11-16 20:35:22,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:35:22,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:22,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:22,219 INFO L85 PathProgramCache]: Analyzing trace with hash -854653186, now seen corresponding path program 1 times [2022-11-16 20:35:22,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:35:22,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063666286] [2022-11-16 20:35:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:22,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:35:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:23,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 20:35:23,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:35:23,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063666286] [2022-11-16 20:35:23,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063666286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:35:23,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:35:23,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 20:35:23,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791313801] [2022-11-16 20:35:23,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:35:23,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 20:35:23,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:35:23,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 20:35:23,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:35:23,828 INFO L87 Difference]: Start difference. First operand 2367 states and 3422 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 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) [2022-11-16 20:35:28,397 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 [] [2022-11-16 20:35:34,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:35:35,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:35:38,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:35:40,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:35:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:35:42,833 INFO L93 Difference]: Finished difference Result 4751 states and 6912 transitions. [2022-11-16 20:35:42,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:35:42,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 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 61 [2022-11-16 20:35:42,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:35:42,856 INFO L225 Difference]: With dead ends: 4751 [2022-11-16 20:35:42,856 INFO L226 Difference]: Without dead ends: 2385 [2022-11-16 20:35:42,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:35:42,871 INFO L413 NwaCegarLoop]: 2913 mSDtfsCounter, 6 mSDsluCounter, 14533 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 17446 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:35:42,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 17446 Invalid, 1921 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1919 Invalid, 2 Unknown, 0 Unchecked, 18.5s Time] [2022-11-16 20:35:42,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2022-11-16 20:35:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2373. [2022-11-16 20:35:42,987 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) [2022-11-16 20:35:43,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3431 transitions. [2022-11-16 20:35:43,006 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3431 transitions. Word has length 61 [2022-11-16 20:35:43,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:35:43,007 INFO L495 AbstractCegarLoop]: Abstraction has 2373 states and 3431 transitions. [2022-11-16 20:35:43,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 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) [2022-11-16 20:35:43,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3431 transitions. [2022-11-16 20:35:43,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 20:35:43,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:43,017 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, 1] [2022-11-16 20:35:43,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:35:43,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:43,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:43,019 INFO L85 PathProgramCache]: Analyzing trace with hash 16962058, now seen corresponding path program 1 times [2022-11-16 20:35:43,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:35:43,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491133479] [2022-11-16 20:35:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:43,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:35:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 20:35:44,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:35:44,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491133479] [2022-11-16 20:35:44,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491133479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:35:44,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:35:44,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 20:35:44,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168549554] [2022-11-16 20:35:44,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:35:44,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 20:35:44,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:35:44,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 20:35:44,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:35:44,623 INFO L87 Difference]: Start difference. First operand 2373 states and 3431 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 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) [2022-11-16 20:35:50,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:35:57,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:35:59,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:36:01,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:36:04,164 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 [] [2022-11-16 20:36:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:36:05,524 INFO L93 Difference]: Finished difference Result 4758 states and 6920 transitions. [2022-11-16 20:36:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:36:05,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 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 65 [2022-11-16 20:36:05,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:36:05,546 INFO L225 Difference]: With dead ends: 4758 [2022-11-16 20:36:05,547 INFO L226 Difference]: Without dead ends: 2386 [2022-11-16 20:36:05,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:36:05,569 INFO L413 NwaCegarLoop]: 2908 mSDtfsCounter, 6 mSDsluCounter, 14512 mSDsCounter, 0 mSdLazyCounter, 1916 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17420 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1916 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-11-16 20:36:05,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17420 Invalid, 1921 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1916 Invalid, 5 Unknown, 0 Unchecked, 20.6s Time] [2022-11-16 20:36:05,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2022-11-16 20:36:05,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2375. [2022-11-16 20:36:05,697 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) [2022-11-16 20:36:05,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3433 transitions. [2022-11-16 20:36:05,717 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3433 transitions. Word has length 65 [2022-11-16 20:36:05,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:36:05,720 INFO L495 AbstractCegarLoop]: Abstraction has 2375 states and 3433 transitions. [2022-11-16 20:36:05,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 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) [2022-11-16 20:36:05,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3433 transitions. [2022-11-16 20:36:05,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 20:36:05,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:36:05,751 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] [2022-11-16 20:36:05,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:36:05,751 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:36:05,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:36:05,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1872655467, now seen corresponding path program 1 times [2022-11-16 20:36:05,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:36:05,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170414400] [2022-11-16 20:36:05,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:36:05,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:36:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:36:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 20:36:06,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:36:06,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170414400] [2022-11-16 20:36:06,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170414400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:36:06,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:36:06,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:36:06,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564830261] [2022-11-16 20:36:06,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:36:06,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:36:06,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:36:06,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:36:06,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:36:06,507 INFO L87 Difference]: Start difference. First operand 2375 states and 3433 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) [2022-11-16 20:36:08,991 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 [] [2022-11-16 20:36:11,976 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 [] [2022-11-16 20:36:12,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:36:12,404 INFO L93 Difference]: Finished difference Result 4763 states and 6878 transitions. [2022-11-16 20:36:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:36:12,405 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 [2022-11-16 20:36:12,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:36:12,424 INFO L225 Difference]: With dead ends: 4763 [2022-11-16 20:36:12,424 INFO L226 Difference]: Without dead ends: 2389 [2022-11-16 20:36:12,438 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 [2022-11-16 20:36:12,439 INFO L413 NwaCegarLoop]: 2900 mSDtfsCounter, 3147 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3155 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:36:12,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3155 Valid, 2955 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 324 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2022-11-16 20:36:12,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2022-11-16 20:36:12,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2389. [2022-11-16 20:36:12,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 1474 states have (on average 1.3398914518317504) internal successors, (1975), 1517 states have internal predecessors, (1975), 731 states have call successors, (731), 181 states have call predecessors, (731), 183 states have return successors, (739), 719 states have call predecessors, (739), 730 states have call successors, (739) [2022-11-16 20:36:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3445 transitions. [2022-11-16 20:36:12,699 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3445 transitions. Word has length 71 [2022-11-16 20:36:12,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:36:12,699 INFO L495 AbstractCegarLoop]: Abstraction has 2389 states and 3445 transitions. [2022-11-16 20:36:12,700 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) [2022-11-16 20:36:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3445 transitions. [2022-11-16 20:36:12,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 20:36:12,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:36:12,716 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] [2022-11-16 20:36:12,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:36:12,717 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:36:12,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:36:12,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1662718337, now seen corresponding path program 1 times [2022-11-16 20:36:12,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:36:12,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473980453] [2022-11-16 20:36:12,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:36:12,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:36:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:36:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 20:36:13,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:36:13,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473980453] [2022-11-16 20:36:13,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473980453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:36:13,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:36:13,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:36:13,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669092554] [2022-11-16 20:36:13,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:36:13,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:36:13,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:36:13,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:36:13,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:36:13,455 INFO L87 Difference]: Start difference. First operand 2389 states and 3445 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) [2022-11-16 20:36:16,186 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 [] [2022-11-16 20:36:19,132 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 [] [2022-11-16 20:36:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:36:19,584 INFO L93 Difference]: Finished difference Result 4775 states and 6886 transitions. [2022-11-16 20:36:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:36:19,585 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 [2022-11-16 20:36:19,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:36:19,605 INFO L225 Difference]: With dead ends: 4775 [2022-11-16 20:36:19,606 INFO L226 Difference]: Without dead ends: 2387 [2022-11-16 20:36:19,621 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 [2022-11-16 20:36:19,622 INFO L413 NwaCegarLoop]: 2896 mSDtfsCounter, 3144 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3152 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:36:19,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3152 Valid, 2951 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 324 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-11-16 20:36:19,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2022-11-16 20:36:19,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2387. [2022-11-16 20:36:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2387 states, 1473 states have (on average 1.3394433129667345) internal successors, (1973), 1516 states have internal predecessors, (1973), 730 states have call successors, (730), 181 states have call predecessors, (730), 183 states have return successors, (738), 718 states have call predecessors, (738), 729 states have call successors, (738) [2022-11-16 20:36:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 3441 transitions. [2022-11-16 20:36:19,867 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 3441 transitions. Word has length 70 [2022-11-16 20:36:19,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:36:19,867 INFO L495 AbstractCegarLoop]: Abstraction has 2387 states and 3441 transitions. [2022-11-16 20:36:19,868 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) [2022-11-16 20:36:19,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 3441 transitions. [2022-11-16 20:36:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 20:36:19,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:36:19,885 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] [2022-11-16 20:36:19,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 20:36:19,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:36:19,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:36:19,887 INFO L85 PathProgramCache]: Analyzing trace with hash -430734728, now seen corresponding path program 1 times [2022-11-16 20:36:19,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:36:19,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735600429] [2022-11-16 20:36:19,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:36:19,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:36:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:36:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 20:36:20,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:36:20,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735600429] [2022-11-16 20:36:20,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735600429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:36:20,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:36:20,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:36:20,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970654239] [2022-11-16 20:36:20,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:36:20,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:36:20,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:36:20,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:36:20,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:36:20,417 INFO L87 Difference]: Start difference. First operand 2387 states and 3441 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) [2022-11-16 20:36:22,907 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 [] [2022-11-16 20:36:25,813 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 [] [2022-11-16 20:36:28,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:36:28,055 INFO L93 Difference]: Finished difference Result 7050 states and 10164 transitions. [2022-11-16 20:36:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:36:28,055 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 [2022-11-16 20:36:28,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:36:28,087 INFO L225 Difference]: With dead ends: 7050 [2022-11-16 20:36:28,087 INFO L226 Difference]: Without dead ends: 4664 [2022-11-16 20:36:28,100 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 [2022-11-16 20:36:28,101 INFO L413 NwaCegarLoop]: 3553 mSDtfsCounter, 3053 mSDsluCounter, 2864 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3061 SdHoareTripleChecker+Valid, 6417 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:36:28,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3061 Valid, 6417 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 656 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-11-16 20:36:28,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2022-11-16 20:36:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 4655. [2022-11-16 20:36:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4655 states, 2872 states have (on average 1.33983286908078) internal successors, (3848), 2958 states have internal predecessors, (3848), 1425 states have call successors, (1425), 353 states have call predecessors, (1425), 357 states have return successors, (1442), 1401 states have call predecessors, (1442), 1424 states have call successors, (1442) [2022-11-16 20:36:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4655 states to 4655 states and 6715 transitions. [2022-11-16 20:36:28,426 INFO L78 Accepts]: Start accepts. Automaton has 4655 states and 6715 transitions. Word has length 84 [2022-11-16 20:36:28,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:36:28,427 INFO L495 AbstractCegarLoop]: Abstraction has 4655 states and 6715 transitions. [2022-11-16 20:36:28,427 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) [2022-11-16 20:36:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand 4655 states and 6715 transitions. [2022-11-16 20:36:28,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 20:36:28,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:36:28,438 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] [2022-11-16 20:36:28,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 20:36:28,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:36:28,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:36:28,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1461503320, now seen corresponding path program 1 times [2022-11-16 20:36:28,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:36:28,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802973349] [2022-11-16 20:36:28,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:36:28,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:36:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:36:29,083 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 20:36:29,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:36:29,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802973349] [2022-11-16 20:36:29,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802973349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:36:29,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:36:29,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:36:29,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400683315] [2022-11-16 20:36:29,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:36:29,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:36:29,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:36:29,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:36:29,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:36:29,087 INFO L87 Difference]: Start difference. First operand 4655 states and 6715 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) [2022-11-16 20:36:31,883 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 [] [2022-11-16 20:36:33,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:36:34,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:36:34,449 INFO L93 Difference]: Finished difference Result 9307 states and 13424 transitions. [2022-11-16 20:36:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:36:34,449 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 [2022-11-16 20:36:34,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:36:34,481 INFO L225 Difference]: With dead ends: 9307 [2022-11-16 20:36:34,482 INFO L226 Difference]: Without dead ends: 4653 [2022-11-16 20:36:34,507 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 [2022-11-16 20:36:34,508 INFO L413 NwaCegarLoop]: 2890 mSDtfsCounter, 3182 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3186 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:36:34,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3186 Valid, 2895 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 318 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-16 20:36:34,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2022-11-16 20:36:34,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4653. [2022-11-16 20:36:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4653 states, 2871 states have (on average 1.339254615116684) internal successors, (3845), 2957 states have internal predecessors, (3845), 1423 states have call successors, (1423), 354 states have call predecessors, (1423), 358 states have return successors, (1440), 1399 states have call predecessors, (1440), 1422 states have call successors, (1440) [2022-11-16 20:36:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 6708 transitions. [2022-11-16 20:36:34,853 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 6708 transitions. Word has length 72 [2022-11-16 20:36:34,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:36:34,853 INFO L495 AbstractCegarLoop]: Abstraction has 4653 states and 6708 transitions. [2022-11-16 20:36:34,854 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) [2022-11-16 20:36:34,854 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 6708 transitions. [2022-11-16 20:36:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 20:36:34,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:36:34,869 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] [2022-11-16 20:36:34,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 20:36:34,870 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:36:34,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:36:34,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1023547230, now seen corresponding path program 1 times [2022-11-16 20:36:34,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:36:34,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894079644] [2022-11-16 20:36:34,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:36:34,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:36:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:36:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 20:36:35,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:36:35,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894079644] [2022-11-16 20:36:35,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894079644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:36:35,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:36:35,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:36:35,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880873868] [2022-11-16 20:36:35,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:36:35,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:36:35,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:36:35,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:36:35,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:36:35,555 INFO L87 Difference]: Start difference. First operand 4653 states and 6708 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) [2022-11-16 20:36:37,952 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 [] [2022-11-16 20:36:41,291 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 [] [2022-11-16 20:36:41,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:36:41,663 INFO L93 Difference]: Finished difference Result 9301 states and 13409 transitions. [2022-11-16 20:36:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:36:41,664 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 [2022-11-16 20:36:41,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:36:41,696 INFO L225 Difference]: With dead ends: 9301 [2022-11-16 20:36:41,697 INFO L226 Difference]: Without dead ends: 4649 [2022-11-16 20:36:41,719 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 [2022-11-16 20:36:41,720 INFO L413 NwaCegarLoop]: 2888 mSDtfsCounter, 3133 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3141 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-16 20:36:41,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3141 Valid, 2943 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 324 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-11-16 20:36:41,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4649 states. [2022-11-16 20:36:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4649 to 4649. [2022-11-16 20:36:42,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 2869 states have (on average 1.338794004879749) internal successors, (3841), 2955 states have internal predecessors, (3841), 1421 states have call successors, (1421), 354 states have call predecessors, (1421), 358 states have return successors, (1438), 1397 states have call predecessors, (1438), 1420 states have call successors, (1438) [2022-11-16 20:36:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 6700 transitions. [2022-11-16 20:36:42,090 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 6700 transitions. Word has length 73 [2022-11-16 20:36:42,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:36:42,091 INFO L495 AbstractCegarLoop]: Abstraction has 4649 states and 6700 transitions. [2022-11-16 20:36:42,091 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) [2022-11-16 20:36:42,091 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 6700 transitions. [2022-11-16 20:36:42,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 20:36:42,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:36:42,106 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] [2022-11-16 20:36:42,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 20:36:42,106 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:36:42,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:36:42,107 INFO L85 PathProgramCache]: Analyzing trace with hash -149670771, now seen corresponding path program 1 times [2022-11-16 20:36:42,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:36:42,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058797723] [2022-11-16 20:36:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:36:42,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:36:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:36:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 20:36:42,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:36:42,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058797723] [2022-11-16 20:36:42,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058797723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:36:42,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:36:42,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:36:42,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222307037] [2022-11-16 20:36:42,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:36:42,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:36:42,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:36:42,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:36:42,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:36:42,444 INFO L87 Difference]: Start difference. First operand 4649 states and 6700 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) [2022-11-16 20:36:44,741 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 [] [2022-11-16 20:36:50,609 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 [] [2022-11-16 20:36:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:36:50,941 INFO L93 Difference]: Finished difference Result 13838 states and 19930 transitions. [2022-11-16 20:36:50,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:36:50,941 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 [2022-11-16 20:36:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:36:50,991 INFO L225 Difference]: With dead ends: 13838 [2022-11-16 20:36:50,991 INFO L226 Difference]: Without dead ends: 9190 [2022-11-16 20:36:51,005 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 [2022-11-16 20:36:51,006 INFO L413 NwaCegarLoop]: 3614 mSDtfsCounter, 3096 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 6471 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-16 20:36:51,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3100 Valid, 6471 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 659 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-11-16 20:36:51,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9190 states. [2022-11-16 20:36:51,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9190 to 9185. [2022-11-16 20:36:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9185 states, 5662 states have (on average 1.337336630166019) internal successors, (7572), 5835 states have internal predecessors, (7572), 2809 states have call successors, (2809), 704 states have call predecessors, (2809), 713 states have return successors, (2844), 2761 states have call predecessors, (2844), 2808 states have call successors, (2844) [2022-11-16 20:36:51,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9185 states to 9185 states and 13225 transitions. [2022-11-16 20:36:51,666 INFO L78 Accepts]: Start accepts. Automaton has 9185 states and 13225 transitions. Word has length 100 [2022-11-16 20:36:51,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:36:51,667 INFO L495 AbstractCegarLoop]: Abstraction has 9185 states and 13225 transitions. [2022-11-16 20:36:51,667 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) [2022-11-16 20:36:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 9185 states and 13225 transitions. [2022-11-16 20:36:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 20:36:51,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:36:51,678 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] [2022-11-16 20:36:51,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 20:36:51,679 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:36:51,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:36:51,679 INFO L85 PathProgramCache]: Analyzing trace with hash -821780918, now seen corresponding path program 1 times [2022-11-16 20:36:51,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:36:51,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457674501] [2022-11-16 20:36:51,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:36:51,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:36:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:36:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 20:36:52,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:36:52,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457674501] [2022-11-16 20:36:52,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457674501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:36:52,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:36:52,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:36:52,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189117361] [2022-11-16 20:36:52,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:36:52,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:36:52,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:36:52,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:36:52,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:36:52,030 INFO L87 Difference]: Start difference. First operand 9185 states and 13225 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) [2022-11-16 20:36:54,378 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 [] [2022-11-16 20:36:58,495 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 [] [2022-11-16 20:36:59,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:36:59,856 INFO L93 Difference]: Finished difference Result 27263 states and 39236 transitions. [2022-11-16 20:36:59,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:36:59,857 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 [2022-11-16 20:36:59,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:36:59,965 INFO L225 Difference]: With dead ends: 27263 [2022-11-16 20:36:59,965 INFO L226 Difference]: Without dead ends: 18079 [2022-11-16 20:37:00,013 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 [2022-11-16 20:37:00,014 INFO L413 NwaCegarLoop]: 3662 mSDtfsCounter, 3042 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 6519 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-16 20:37:00,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 6519 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 661 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-16 20:37:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18079 states. [2022-11-16 20:37:01,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18079 to 18063. [2022-11-16 20:37:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18063 states, 11122 states have (on average 1.3360906311814422) internal successors, (14860), 11469 states have internal predecessors, (14860), 5531 states have call successors, (5531), 1392 states have call predecessors, (5531), 1409 states have return successors, (5602), 5433 states have call predecessors, (5602), 5530 states have call successors, (5602) [2022-11-16 20:37:01,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18063 states to 18063 states and 25993 transitions. [2022-11-16 20:37:01,673 INFO L78 Accepts]: Start accepts. Automaton has 18063 states and 25993 transitions. Word has length 107 [2022-11-16 20:37:01,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:37:01,674 INFO L495 AbstractCegarLoop]: Abstraction has 18063 states and 25993 transitions. [2022-11-16 20:37:01,674 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) [2022-11-16 20:37:01,674 INFO L276 IsEmpty]: Start isEmpty. Operand 18063 states and 25993 transitions. [2022-11-16 20:37:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 20:37:01,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:37:01,683 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] [2022-11-16 20:37:01,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 20:37:01,684 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:37:01,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:37:01,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1914897921, now seen corresponding path program 1 times [2022-11-16 20:37:01,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:37:01,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483729411] [2022-11-16 20:37:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:37:01,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:37:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:37:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 20:37:02,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:37:02,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483729411] [2022-11-16 20:37:02,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483729411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:37:02,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:37:02,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:37:02,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578953755] [2022-11-16 20:37:02,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:37:02,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:37:02,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:37:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:37:02,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:37:02,015 INFO L87 Difference]: Start difference. First operand 18063 states and 25993 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2022-11-16 20:37:05,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:37:11,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:37:12,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:37:12,281 INFO L93 Difference]: Finished difference Result 53812 states and 77368 transitions. [2022-11-16 20:37:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:37:12,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 124 [2022-11-16 20:37:12,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:37:12,469 INFO L225 Difference]: With dead ends: 53812 [2022-11-16 20:37:12,469 INFO L226 Difference]: Without dead ends: 35750 [2022-11-16 20:37:12,547 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 [2022-11-16 20:37:12,547 INFO L413 NwaCegarLoop]: 3736 mSDtfsCounter, 3101 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3105 SdHoareTripleChecker+Valid, 6593 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:37:12,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3105 Valid, 6593 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 667 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-11-16 20:37:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35750 states. [2022-11-16 20:37:15,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35750 to 35745. [2022-11-16 20:37:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35745 states, 21977 states have (on average 1.3339855303271602) internal successors, (29317), 22672 states have internal predecessors, (29317), 10952 states have call successors, (10952), 2780 states have call predecessors, (10952), 2815 states have return successors, (11095), 10756 states have call predecessors, (11095), 10951 states have call successors, (11095) [2022-11-16 20:37:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35745 states to 35745 states and 51364 transitions. [2022-11-16 20:37:15,527 INFO L78 Accepts]: Start accepts. Automaton has 35745 states and 51364 transitions. Word has length 124 [2022-11-16 20:37:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:37:15,528 INFO L495 AbstractCegarLoop]: Abstraction has 35745 states and 51364 transitions. [2022-11-16 20:37:15,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2022-11-16 20:37:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand 35745 states and 51364 transitions. [2022-11-16 20:37:15,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 20:37:15,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:37:15,540 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] [2022-11-16 20:37:15,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 20:37:15,541 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:37:15,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:37:15,542 INFO L85 PathProgramCache]: Analyzing trace with hash 864358103, now seen corresponding path program 1 times [2022-11-16 20:37:15,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:37:15,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839840619] [2022-11-16 20:37:15,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:37:15,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:37:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:37:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 20:37:16,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:37:16,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839840619] [2022-11-16 20:37:16,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839840619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:37:16,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:37:16,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:37:16,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695929190] [2022-11-16 20:37:16,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:37:16,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:37:16,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:37:16,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:37:16,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:37:16,011 INFO L87 Difference]: Start difference. First operand 35745 states and 51364 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) [2022-11-16 20:37:18,348 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 [] [2022-11-16 20:37:26,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:37:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:37:27,652 INFO L93 Difference]: Finished difference Result 105622 states and 151439 transitions. [2022-11-16 20:37:27,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:37:27,653 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 [2022-11-16 20:37:27,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:37:28,042 INFO L225 Difference]: With dead ends: 105622 [2022-11-16 20:37:28,042 INFO L226 Difference]: Without dead ends: 69878 [2022-11-16 20:37:28,193 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 [2022-11-16 20:37:28,194 INFO L413 NwaCegarLoop]: 3920 mSDtfsCounter, 3011 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3015 SdHoareTripleChecker+Valid, 6730 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:37:28,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3015 Valid, 6730 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 736 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-16 20:37:28,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69878 states. [2022-11-16 20:37:33,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69878 to 69873. [2022-11-16 20:37:33,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69873 states, 42825 states have (on average 1.3285931115002918) internal successors, (56897), 44216 states have internal predecessors, (56897), 21436 states have call successors, (21436), 5540 states have call predecessors, (21436), 5611 states have return successors, (21723), 21044 states have call predecessors, (21723), 21435 states have call successors, (21723) [2022-11-16 20:37:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69873 states to 69873 states and 100056 transitions. [2022-11-16 20:37:34,755 INFO L78 Accepts]: Start accepts. Automaton has 69873 states and 100056 transitions. Word has length 124 [2022-11-16 20:37:34,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:37:34,755 INFO L495 AbstractCegarLoop]: Abstraction has 69873 states and 100056 transitions. [2022-11-16 20:37:34,756 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) [2022-11-16 20:37:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand 69873 states and 100056 transitions. [2022-11-16 20:37:34,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-16 20:37:34,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:37:34,770 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] [2022-11-16 20:37:34,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 20:37:34,770 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:37:34,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:37:34,771 INFO L85 PathProgramCache]: Analyzing trace with hash 411007532, now seen corresponding path program 1 times [2022-11-16 20:37:34,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:37:34,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871257231] [2022-11-16 20:37:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:37:34,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:37:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:37:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 20:37:35,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:37:35,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871257231] [2022-11-16 20:37:35,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871257231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:37:35,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:37:35,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:37:35,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114076685] [2022-11-16 20:37:35,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:37:35,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:37:35,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:37:35,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:37:35,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:37:35,256 INFO L87 Difference]: Start difference. First operand 69873 states and 100056 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) [2022-11-16 20:37:37,871 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 [] [2022-11-16 20:37:49,303 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 [] [2022-11-16 20:37:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:37:52,281 INFO L93 Difference]: Finished difference Result 205817 states and 293899 transitions. [2022-11-16 20:37:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:37:52,282 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 [2022-11-16 20:37:52,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:37:53,180 INFO L225 Difference]: With dead ends: 205817 [2022-11-16 20:37:53,180 INFO L226 Difference]: Without dead ends: 135945 [2022-11-16 20:37:53,823 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 [2022-11-16 20:37:53,824 INFO L413 NwaCegarLoop]: 3582 mSDtfsCounter, 2984 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2988 SdHoareTripleChecker+Valid, 6377 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:37:53,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2988 Valid, 6377 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 722 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2022-11-16 20:37:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135945 states.