./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--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7a2974a33527a9392dca8d355734fee3e0faaae6e14749128119c28fd0f37e8f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:33:44,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:33:44,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:33:44,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:33:44,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:33:44,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:33:44,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:33:44,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:33:44,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:33:44,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:33:44,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:33:44,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:33:44,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:33:44,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:33:44,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:33:44,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:33:44,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:33:44,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:33:44,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:33:44,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:33:44,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:33:44,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:33:44,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:33:44,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:33:44,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:33:44,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:33:44,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:33:44,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:33:44,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:33:44,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:33:44,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:33:44,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:33:44,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:33:44,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:33:44,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:33:44,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:33:44,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:33:44,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:33:44,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:33:44,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:33:44,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:33:44,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:33:44,797 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:33:44,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:33:44,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:33:44,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:33:44,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:33:44,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:33:44,798 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:33:44,799 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:33:44,799 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:33:44,799 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:33:44,799 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:33:44,799 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:33:44,800 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:33:44,800 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:33:44,800 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:33:44,800 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:33:44,800 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:33:44,801 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:33:44,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:33:44,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:33:44,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:33:44,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:33:44,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:33:44,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:33:44,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:33:44,803 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:33:44,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:33:44,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:33:44,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:33:44,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:33:44,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:33:44,804 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:33:44,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:33:44,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:33:44,807 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:33:44,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:33:44,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:33:44,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:33:44,808 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_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a2974a33527a9392dca8d355734fee3e0faaae6e14749128119c28fd0f37e8f [2022-11-03 02:33:45,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:33:45,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:33:45,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:33:45,149 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:33:45,151 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:33:45,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2022-11-03 02:33:45,251 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/data/8eb67b0be/07f025c7d5a741b48fbb80d380bd24e4/FLAGa65cd93c5 [2022-11-03 02:33:46,280 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:33:46,281 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2022-11-03 02:33:46,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/data/8eb67b0be/07f025c7d5a741b48fbb80d380bd24e4/FLAGa65cd93c5 [2022-11-03 02:33:46,621 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/data/8eb67b0be/07f025c7d5a741b48fbb80d380bd24e4 [2022-11-03 02:33:46,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:33:46,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:33:46,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:33:46,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:33:46,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:33:46,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:33:46" (1/1) ... [2022-11-03 02:33:46,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e87e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:46, skipping insertion in model container [2022-11-03 02:33:46,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:33:46" (1/1) ... [2022-11-03 02:33:46,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:33:46,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:33:50,179 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i[386204,386217] [2022-11-03 02:33:50,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:33:50,308 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:33:50,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i[386204,386217] [2022-11-03 02:33:50,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:33:51,071 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:33:51,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:51 WrapperNode [2022-11-03 02:33:51,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:33:51,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:33:51,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:33:51,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:33:51,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:51" (1/1) ... [2022-11-03 02:33:51,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:51" (1/1) ... [2022-11-03 02:33:51,572 INFO L138 Inliner]: procedures = 333, calls = 3594, calls flagged for inlining = 139, calls inlined = 136, statements flattened = 6651 [2022-11-03 02:33:51,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:33:51,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:33:51,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:33:51,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:33:51,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:51" (1/1) ... [2022-11-03 02:33:51,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:51" (1/1) ... [2022-11-03 02:33:51,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:51" (1/1) ... [2022-11-03 02:33:51,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:51" (1/1) ... [2022-11-03 02:33:51,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:51" (1/1) ... [2022-11-03 02:33:51,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:51" (1/1) ... [2022-11-03 02:33:51,995 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:51" (1/1) ... [2022-11-03 02:33:52,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:51" (1/1) ... [2022-11-03 02:33:52,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:33:52,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:33:52,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:33:52,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:33:52,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:51" (1/1) ... [2022-11-03 02:33:52,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:33:52,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:52,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:33:52,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:33:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure disable_ast [2022-11-03 02:33:52,165 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_ast [2022-11-03 02:33:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 02:33:52,166 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 02:33:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2022-11-03 02:33:52,166 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2022-11-03 02:33:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:33:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:33:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:33:52,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:33:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_interrupt [2022-11-03 02:33:52,289 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_interrupt [2022-11-03 02:33:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:33:52,290 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:33:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure reset_init_sia [2022-11-03 02:33:52,290 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_init_sia [2022-11-03 02:33:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-03 02:33:52,290 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-03 02:33:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:33:52,291 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:33:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_alloc_rx_buff [2022-11-03 02:33:52,291 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_alloc_rx_buff [2022-11-03 02:33:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 02:33:52,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 02:33:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure test_for_100Mb [2022-11-03 02:33:52,291 INFO L138 BoogieDeclarations]: Found implementation of procedure test_for_100Mb [2022-11-03 02:33:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:33:52,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:33:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2022-11-03 02:33:52,292 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2022-11-03 02:33:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_put_cache [2022-11-03 02:33:52,292 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_put_cache [2022-11-03 02:33:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-03 02:33:52,292 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-03 02:33:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2022-11-03 02:33:52,293 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2022-11-03 02:33:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure load_packet [2022-11-03 02:33:52,294 INFO L138 BoogieDeclarations]: Found implementation of procedure load_packet [2022-11-03 02:33:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:33:52,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:33:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_mii [2022-11-03 02:33:52,295 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_mii [2022-11-03 02:33:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2022-11-03 02:33:52,295 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2022-11-03 02:33:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_switch_mac_port [2022-11-03 02:33:52,295 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_switch_mac_port [2022-11-03 02:33:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:33:52,296 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:33:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure srom_latch [2022-11-03 02:33:52,296 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_latch [2022-11-03 02:33:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure is_100_up [2022-11-03 02:33:52,296 INFO L138 BoogieDeclarations]: Found implementation of procedure is_100_up [2022-11-03 02:33:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2022-11-03 02:33:52,297 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2022-11-03 02:33:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:33:52,297 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:33:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ta [2022-11-03 02:33:52,297 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ta [2022-11-03 02:33:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-11-03 02:33:52,297 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-11-03 02:33:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:33:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:33:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:33:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:33:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2022-11-03 02:33:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2022-11-03 02:33:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-03 02:33:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-03 02:33:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:33:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:33:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure build_setup_frame [2022-11-03 02:33:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure build_setup_frame [2022-11-03 02:33:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2022-11-03 02:33:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2022-11-03 02:33:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure test_mii_reg [2022-11-03 02:33:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure test_mii_reg [2022-11-03 02:33:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2022-11-03 02:33:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2022-11-03 02:33:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_cache_state [2022-11-03 02:33:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_cache_state [2022-11-03 02:33:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-03 02:33:52,308 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-03 02:33:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:33:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_media [2022-11-03 02:33:52,309 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_media [2022-11-03 02:33:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-03 02:33:52,310 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-03 02:33:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:33:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2022-11-03 02:33:52,311 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2022-11-03 02:33:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2022-11-03 02:33:52,311 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2022-11-03 02:33:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure mii_rd [2022-11-03 02:33:52,312 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_rd [2022-11-03 02:33:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure DevicePresent [2022-11-03 02:33:52,312 INFO L138 BoogieDeclarations]: Found implementation of procedure DevicePresent [2022-11-03 02:33:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-03 02:33:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-03 02:33:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2022-11-03 02:33:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2022-11-03 02:33:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:33:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2022-11-03 02:33:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2022-11-03 02:33:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-11-03 02:33:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-11-03 02:33:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:33:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:33:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 02:33:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 02:33:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:33:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:33:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2022-11-03 02:33:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2022-11-03 02:33:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-11-03 02:33:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_sw_reset [2022-11-03 02:33:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_sw_reset [2022-11-03 02:33:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:33:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2022-11-03 02:33:52,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2022-11-03 02:33:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-03 02:33:52,326 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-03 02:33:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:33:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure is_10_up [2022-11-03 02:33:52,326 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10_up [2022-11-03 02:33:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 02:33:52,327 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 02:33:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-03 02:33:52,327 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-03 02:33:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure is_anc_capable [2022-11-03 02:33:52,327 INFO L138 BoogieDeclarations]: Found implementation of procedure is_anc_capable [2022-11-03 02:33:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 02:33:52,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 02:33:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2022-11-03 02:33:52,328 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2022-11-03 02:33:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-03 02:33:52,328 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-03 02:33:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:33:52,328 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:33:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 02:33:52,328 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 02:33:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure is_spd_100 [2022-11-03 02:33:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure is_spd_100 [2022-11-03 02:33:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2022-11-03 02:33:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2022-11-03 02:33:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:33:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:33:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:33:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:33:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-03 02:33:52,330 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-03 02:33:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_queue_pkt [2022-11-03 02:33:52,330 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_queue_pkt [2022-11-03 02:33:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:33:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_mii [2022-11-03 02:33:52,330 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_mii [2022-11-03 02:33:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure test_media [2022-11-03 02:33:52,331 INFO L138 BoogieDeclarations]: Found implementation of procedure test_media [2022-11-03 02:33:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_rx_buffs [2022-11-03 02:33:52,331 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_rx_buffs [2022-11-03 02:33:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:33:52,331 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:33:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:33:52,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:33:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-03 02:33:52,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-03 02:33:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buffs [2022-11-03 02:33:52,332 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buffs [2022-11-03 02:33:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:33:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-11-03 02:33:52,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-11-03 02:33:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 02:33:52,333 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 02:33:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:33:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:33:52,333 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:33:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:33:52,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:33:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-11-03 02:33:52,334 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-11-03 02:33:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:33:52,334 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:33:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2022-11-03 02:33:52,334 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2022-11-03 02:33:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure ping_media [2022-11-03 02:33:52,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ping_media [2022-11-03 02:33:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:33:52,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:33:52,335 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-03 02:33:52,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-03 02:33:52,335 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2022-11-03 02:33:52,335 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2022-11-03 02:33:52,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:33:52,335 INFO L130 BoogieDeclarations]: Found specification of procedure srom_exec [2022-11-03 02:33:52,335 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_exec [2022-11-03 02:33:52,336 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:33:52,336 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:33:52,336 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 02:33:52,336 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 02:33:52,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:33:52,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:33:52,338 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_tx [2022-11-03 02:33:52,339 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_tx [2022-11-03 02:33:52,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:33:52,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:33:52,339 INFO L130 BoogieDeclarations]: Found specification of procedure gep_wr [2022-11-03 02:33:52,339 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_wr [2022-11-03 02:33:52,339 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-03 02:33:52,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-03 02:33:52,339 INFO L130 BoogieDeclarations]: Found specification of procedure srom_rd [2022-11-03 02:33:52,341 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_rd [2022-11-03 02:33:52,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:33:52,341 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:33:52,341 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:33:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_srom [2022-11-03 02:33:52,342 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_srom [2022-11-03 02:33:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:33:52,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:33:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure SetMulticastFilter [2022-11-03 02:33:52,342 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMulticastFilter [2022-11-03 02:33:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 02:33:52,342 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 02:33:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:33:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ioctl [2022-11-03 02:33:52,343 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ioctl [2022-11-03 02:33:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_cache [2022-11-03 02:33:52,343 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_cache [2022-11-03 02:33:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:33:52,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:33:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:33:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 02:33:52,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 02:33:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_srom [2022-11-03 02:33:52,344 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_srom [2022-11-03 02:33:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2022-11-03 02:33:52,344 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2022-11-03 02:33:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-03 02:33:52,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-03 02:33:52,346 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:33:52,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:33:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure mii_swap [2022-11-03 02:33:52,350 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_swap [2022-11-03 02:33:52,350 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2022-11-03 02:33:52,350 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2022-11-03 02:33:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_mii [2022-11-03 02:33:52,351 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_mii [2022-11-03 02:33:52,351 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2022-11-03 02:33:52,352 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2022-11-03 02:33:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure gep_rd [2022-11-03 02:33:52,354 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_rd [2022-11-03 02:33:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure mii_address [2022-11-03 02:33:52,354 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_address [2022-11-03 02:33:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_reset_phy [2022-11-03 02:33:52,354 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_reset_phy [2022-11-03 02:33:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_putb_cache [2022-11-03 02:33:52,355 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_putb_cache [2022-11-03 02:33:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buff [2022-11-03 02:33:52,355 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buff [2022-11-03 02:33:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_setup_intr [2022-11-03 02:33:52,355 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_setup_intr [2022-11-03 02:33:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2022-11-03 02:33:52,355 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2022-11-03 02:33:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_stats [2022-11-03 02:33:52,355 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_stats [2022-11-03 02:33:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_save_skbs [2022-11-03 02:33:52,356 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_save_skbs [2022-11-03 02:33:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2022-11-03 02:33:52,356 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2022-11-03 02:33:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 02:33:52,356 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 02:33:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-03 02:33:52,356 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-03 02:33:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure srom_map_media [2022-11-03 02:33:52,357 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_map_media [2022-11-03 02:33:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-03 02:33:52,357 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-03 02:33:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_close [2022-11-03 02:33:52,357 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_close [2022-11-03 02:33:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure yawn [2022-11-03 02:33:52,357 INFO L138 BoogieDeclarations]: Found implementation of procedure yawn [2022-11-03 02:33:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wdata [2022-11-03 02:33:52,358 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wdata [2022-11-03 02:33:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:33:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init_connection [2022-11-03 02:33:52,358 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init_connection [2022-11-03 02:33:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wr [2022-11-03 02:33:52,358 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wr [2022-11-03 02:33:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 02:33:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:33:52,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:33:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_state [2022-11-03 02:33:52,359 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_state [2022-11-03 02:33:53,671 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:33:53,675 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:33:54,213 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:34:25,902 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:34:29,831 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:34:29,831 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-11-03 02:34:29,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:34:29 BoogieIcfgContainer [2022-11-03 02:34:29,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:34:29,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:34:29,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:34:29,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:34:29,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:33:46" (1/3) ... [2022-11-03 02:34:29,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a536153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:34:29, skipping insertion in model container [2022-11-03 02:34:29,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:51" (2/3) ... [2022-11-03 02:34:29,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a536153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:34:29, skipping insertion in model container [2022-11-03 02:34:29,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:34:29" (3/3) ... [2022-11-03 02:34:29,849 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2022-11-03 02:34:29,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:34:29,873 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:34:30,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:34:30,025 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;@79e25ce8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:34:30,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:34:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 2706 states, 1731 states have (on average 1.3575967648757943) internal successors, (2350), 1793 states have internal predecessors, (2350), 854 states have call successors, (854), 136 states have call predecessors, (854), 135 states have return successors, (846), 835 states have call predecessors, (846), 846 states have call successors, (846) [2022-11-03 02:34:30,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 02:34:30,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:30,066 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 02:34:30,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:30,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:30,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1596020278, now seen corresponding path program 1 times [2022-11-03 02:34:30,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:34:30,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731669778] [2022-11-03 02:34:30,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:30,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:34:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-03 02:34:31,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:34:31,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731669778] [2022-11-03 02:34:31,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731669778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:31,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:31,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:34:31,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857964060] [2022-11-03 02:34:31,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:31,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:34:31,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:34:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:34:31,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:34:31,231 INFO L87 Difference]: Start difference. First operand has 2706 states, 1731 states have (on average 1.3575967648757943) internal successors, (2350), 1793 states have internal predecessors, (2350), 854 states have call successors, (854), 136 states have call predecessors, (854), 135 states have return successors, (846), 835 states have call predecessors, (846), 846 states have call successors, (846) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:34:33,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:40,671 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 [] [2022-11-03 02:34:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:41,136 INFO L93 Difference]: Finished difference Result 7765 states and 11873 transitions. [2022-11-03 02:34:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:34:41,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2022-11-03 02:34:41,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:41,201 INFO L225 Difference]: With dead ends: 7765 [2022-11-03 02:34:41,201 INFO L226 Difference]: Without dead ends: 5051 [2022-11-03 02:34:41,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:34:41,234 INFO L413 NwaCegarLoop]: 4430 mSDtfsCounter, 3578 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3578 SdHoareTripleChecker+Valid, 7930 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:41,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3578 Valid, 7930 Invalid, 850 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 843 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-11-03 02:34:41,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2022-11-03 02:34:41,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 5045. [2022-11-03 02:34:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5045 states, 3207 states have (on average 1.3489242282507017) internal successors, (4326), 3284 states have internal predecessors, (4326), 1578 states have call successors, (1578), 260 states have call predecessors, (1578), 259 states have return successors, (1577), 1555 states have call predecessors, (1577), 1577 states have call successors, (1577) [2022-11-03 02:34:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5045 states to 5045 states and 7481 transitions. [2022-11-03 02:34:41,741 INFO L78 Accepts]: Start accepts. Automaton has 5045 states and 7481 transitions. Word has length 102 [2022-11-03 02:34:41,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:41,744 INFO L495 AbstractCegarLoop]: Abstraction has 5045 states and 7481 transitions. [2022-11-03 02:34:41,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:34:41,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5045 states and 7481 transitions. [2022-11-03 02:34:41,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 02:34:41,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:41,757 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-03 02:34:41,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:34:41,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:41,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:41,759 INFO L85 PathProgramCache]: Analyzing trace with hash -631487762, now seen corresponding path program 1 times [2022-11-03 02:34:41,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:34:41,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127383310] [2022-11-03 02:34:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:41,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:34:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:34:42,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:34:42,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127383310] [2022-11-03 02:34:42,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127383310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:42,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:42,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:34:42,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901741003] [2022-11-03 02:34:42,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:42,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:34:42,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:34:42,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:34:42,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:42,662 INFO L87 Difference]: Start difference. First operand 5045 states and 7481 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:34:44,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:58,514 INFO L93 Difference]: Finished difference Result 15121 states and 22576 transitions. [2022-11-03 02:34:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:58,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 131 [2022-11-03 02:34:58,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:58,637 INFO L225 Difference]: With dead ends: 15121 [2022-11-03 02:34:58,637 INFO L226 Difference]: Without dead ends: 10093 [2022-11-03 02:34:58,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:34:58,689 INFO L413 NwaCegarLoop]: 4812 mSDtfsCounter, 3917 mSDsluCounter, 14453 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 18026 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:58,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3921 Valid, 18026 Invalid, 1707 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1703 Invalid, 1 Unknown, 0 Unchecked, 15.2s Time] [2022-11-03 02:34:58,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10093 states. [2022-11-03 02:34:59,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10093 to 10064. [2022-11-03 02:34:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10064 states, 6402 states have (on average 1.3495782567947516) internal successors, (8640), 6560 states have internal predecessors, (8640), 3144 states have call successors, (3144), 518 states have call predecessors, (3144), 517 states have return successors, (3288), 3091 states have call predecessors, (3288), 3143 states have call successors, (3288) [2022-11-03 02:34:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10064 states to 10064 states and 15072 transitions. [2022-11-03 02:34:59,476 INFO L78 Accepts]: Start accepts. Automaton has 10064 states and 15072 transitions. Word has length 131 [2022-11-03 02:34:59,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:59,479 INFO L495 AbstractCegarLoop]: Abstraction has 10064 states and 15072 transitions. [2022-11-03 02:34:59,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:34:59,480 INFO L276 IsEmpty]: Start isEmpty. Operand 10064 states and 15072 transitions. [2022-11-03 02:34:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-03 02:34:59,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:59,493 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-03 02:34:59,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:34:59,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:59,495 INFO L85 PathProgramCache]: Analyzing trace with hash 414724431, now seen corresponding path program 1 times [2022-11-03 02:34:59,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:34:59,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143119039] [2022-11-03 02:34:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:59,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:34:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:35:00,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:00,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143119039] [2022-11-03 02:35:00,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143119039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:00,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:00,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:35:00,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436212804] [2022-11-03 02:35:00,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:00,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:35:00,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:35:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:35:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:35:00,210 INFO L87 Difference]: Start difference. First operand 10064 states and 15072 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:35:02,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:04,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:13,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:13,862 INFO L93 Difference]: Finished difference Result 30202 states and 45238 transitions. [2022-11-03 02:35:13,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:35:13,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 134 [2022-11-03 02:35:13,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:14,065 INFO L225 Difference]: With dead ends: 30202 [2022-11-03 02:35:14,065 INFO L226 Difference]: Without dead ends: 20155 [2022-11-03 02:35:14,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:14,377 INFO L413 NwaCegarLoop]: 4568 mSDtfsCounter, 3918 mSDsluCounter, 13858 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3922 SdHoareTripleChecker+Valid, 17219 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:14,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3922 Valid, 17219 Invalid, 1648 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1645 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2022-11-03 02:35:14,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20155 states. [2022-11-03 02:35:15,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20155 to 20112. [2022-11-03 02:35:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20112 states, 12794 states have (on average 1.349851492887291) internal successors, (17270), 13126 states have internal predecessors, (17270), 6280 states have call successors, (6280), 1038 states have call predecessors, (6280), 1037 states have return successors, (6569), 6159 states have call predecessors, (6569), 6279 states have call successors, (6569) [2022-11-03 02:35:16,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20112 states to 20112 states and 30119 transitions. [2022-11-03 02:35:16,133 INFO L78 Accepts]: Start accepts. Automaton has 20112 states and 30119 transitions. Word has length 134 [2022-11-03 02:35:16,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:16,134 INFO L495 AbstractCegarLoop]: Abstraction has 20112 states and 30119 transitions. [2022-11-03 02:35:16,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:35:16,135 INFO L276 IsEmpty]: Start isEmpty. Operand 20112 states and 30119 transitions. [2022-11-03 02:35:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-03 02:35:16,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:16,142 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-03 02:35:16,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:35:16,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:16,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:16,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1535226547, now seen corresponding path program 1 times [2022-11-03 02:35:16,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:16,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270667480] [2022-11-03 02:35:16,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:16,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:35:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:16,814 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:35:16,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:16,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270667480] [2022-11-03 02:35:16,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270667480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:16,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:16,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:35:16,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025694768] [2022-11-03 02:35:16,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:16,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:35:16,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:35:16,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:35:16,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:35:16,818 INFO L87 Difference]: Start difference. First operand 20112 states and 30119 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:35:18,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:26,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:26,812 INFO L93 Difference]: Finished difference Result 31511 states and 46984 transitions. [2022-11-03 02:35:26,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:35:26,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 135 [2022-11-03 02:35:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:26,967 INFO L225 Difference]: With dead ends: 31511 [2022-11-03 02:35:26,967 INFO L226 Difference]: Without dead ends: 20176 [2022-11-03 02:35:27,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:27,035 INFO L413 NwaCegarLoop]: 3546 mSDtfsCounter, 3912 mSDsluCounter, 7837 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3916 SdHoareTripleChecker+Valid, 10625 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:27,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3916 Valid, 10625 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1155 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 02:35:27,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20176 states. [2022-11-03 02:35:28,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20176 to 20128. [2022-11-03 02:35:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20128 states, 12810 states have (on average 1.3494145199063232) internal successors, (17286), 13138 states have internal predecessors, (17286), 6276 states have call successors, (6276), 1042 states have call predecessors, (6276), 1041 states have return successors, (6565), 6159 states have call predecessors, (6565), 6275 states have call successors, (6565) [2022-11-03 02:35:28,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20128 states to 20128 states and 30127 transitions. [2022-11-03 02:35:28,833 INFO L78 Accepts]: Start accepts. Automaton has 20128 states and 30127 transitions. Word has length 135 [2022-11-03 02:35:28,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:28,834 INFO L495 AbstractCegarLoop]: Abstraction has 20128 states and 30127 transitions. [2022-11-03 02:35:28,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:35:28,834 INFO L276 IsEmpty]: Start isEmpty. Operand 20128 states and 30127 transitions. [2022-11-03 02:35:28,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 02:35:28,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:28,840 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-03 02:35:28,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:35:28,841 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:28,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:28,841 INFO L85 PathProgramCache]: Analyzing trace with hash -803598729, now seen corresponding path program 1 times [2022-11-03 02:35:28,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:28,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069103681] [2022-11-03 02:35:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:28,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:35:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:35:29,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:29,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069103681] [2022-11-03 02:35:29,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069103681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:29,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:29,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:35:29,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960405170] [2022-11-03 02:35:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:29,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:35:29,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:35:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:35:29,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:35:29,325 INFO L87 Difference]: Start difference. First operand 20128 states and 30127 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:35:31,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:43,491 INFO L93 Difference]: Finished difference Result 41614 states and 62093 transitions. [2022-11-03 02:35:43,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:35:43,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 132 [2022-11-03 02:35:43,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:43,736 INFO L225 Difference]: With dead ends: 41614 [2022-11-03 02:35:43,737 INFO L226 Difference]: Without dead ends: 30263 [2022-11-03 02:35:43,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:43,826 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 3913 mSDsluCounter, 13527 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 16800 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:43,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3917 Valid, 16800 Invalid, 1541 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1537 Invalid, 1 Unknown, 0 Unchecked, 12.9s Time] [2022-11-03 02:35:43,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30263 states. [2022-11-03 02:35:46,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30263 to 30188. [2022-11-03 02:35:46,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30188 states, 19224 states have (on average 1.349250936329588) internal successors, (25938), 19700 states have internal predecessors, (25938), 9402 states have call successors, (9402), 1562 states have call predecessors, (9402), 1561 states have return successors, (9981), 9239 states have call predecessors, (9981), 9401 states have call successors, (9981) [2022-11-03 02:35:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30188 states to 30188 states and 45321 transitions. [2022-11-03 02:35:46,403 INFO L78 Accepts]: Start accepts. Automaton has 30188 states and 45321 transitions. Word has length 132 [2022-11-03 02:35:46,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:46,404 INFO L495 AbstractCegarLoop]: Abstraction has 30188 states and 45321 transitions. [2022-11-03 02:35:46,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:35:46,404 INFO L276 IsEmpty]: Start isEmpty. Operand 30188 states and 45321 transitions. [2022-11-03 02:35:46,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-03 02:35:46,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:46,411 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-03 02:35:46,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:35:46,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:46,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:46,412 INFO L85 PathProgramCache]: Analyzing trace with hash -788905108, now seen corresponding path program 1 times [2022-11-03 02:35:46,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:46,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482869462] [2022-11-03 02:35:46,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:46,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:35:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:35:46,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:46,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482869462] [2022-11-03 02:35:46,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482869462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:46,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:46,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:35:46,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346386507] [2022-11-03 02:35:46,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:46,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:35:46,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:35:46,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:35:46,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:35:46,935 INFO L87 Difference]: Start difference. First operand 30188 states and 45321 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:35:48,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:35:57,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:57,152 INFO L93 Difference]: Finished difference Result 47318 states and 70701 transitions. [2022-11-03 02:35:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:35:57,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 136 [2022-11-03 02:35:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:57,454 INFO L225 Difference]: With dead ends: 47318 [2022-11-03 02:35:57,454 INFO L226 Difference]: Without dead ends: 30284 [2022-11-03 02:35:57,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:57,548 INFO L413 NwaCegarLoop]: 3546 mSDtfsCounter, 3910 mSDsluCounter, 7837 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3914 SdHoareTripleChecker+Valid, 10625 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:57,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3914 Valid, 10625 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1155 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-03 02:35:57,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30284 states. [2022-11-03 02:35:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30284 to 30212. [2022-11-03 02:35:59,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30212 states, 19248 states have (on average 1.3488154613466334) internal successors, (25962), 19718 states have internal predecessors, (25962), 9396 states have call successors, (9396), 1568 states have call predecessors, (9396), 1567 states have return successors, (9975), 9239 states have call predecessors, (9975), 9395 states have call successors, (9975) [2022-11-03 02:35:59,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30212 states to 30212 states and 45333 transitions. [2022-11-03 02:35:59,878 INFO L78 Accepts]: Start accepts. Automaton has 30212 states and 45333 transitions. Word has length 136 [2022-11-03 02:35:59,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:59,880 INFO L495 AbstractCegarLoop]: Abstraction has 30212 states and 45333 transitions. [2022-11-03 02:35:59,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:35:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 30212 states and 45333 transitions. [2022-11-03 02:35:59,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 02:35:59,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:59,887 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-03 02:35:59,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:35:59,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash -778811797, now seen corresponding path program 1 times [2022-11-03 02:35:59,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:59,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401096654] [2022-11-03 02:35:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:59,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:36:00,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:00,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401096654] [2022-11-03 02:36:00,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401096654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:00,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:00,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:36:00,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317842176] [2022-11-03 02:36:00,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:00,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:36:00,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:00,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:36:00,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:36:00,669 INFO L87 Difference]: Start difference. First operand 30212 states and 45333 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:36:02,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:14,068 INFO L93 Difference]: Finished difference Result 51734 states and 77315 transitions. [2022-11-03 02:36:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:36:14,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 133 [2022-11-03 02:36:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:14,257 INFO L225 Difference]: With dead ends: 51734 [2022-11-03 02:36:14,257 INFO L226 Difference]: Without dead ends: 30303 [2022-11-03 02:36:14,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:36:14,587 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 3911 mSDsluCounter, 13527 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3915 SdHoareTripleChecker+Valid, 16800 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:14,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3915 Valid, 16800 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1537 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2022-11-03 02:36:14,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30303 states. [2022-11-03 02:36:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30303 to 30228. [2022-11-03 02:36:16,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30228 states, 19264 states have (on average 1.3485257475083057) internal successors, (25978), 19730 states have internal predecessors, (25978), 9392 states have call successors, (9392), 1572 states have call predecessors, (9392), 1571 states have return successors, (9971), 9239 states have call predecessors, (9971), 9391 states have call successors, (9971) [2022-11-03 02:36:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30228 states to 30228 states and 45341 transitions. [2022-11-03 02:36:17,207 INFO L78 Accepts]: Start accepts. Automaton has 30228 states and 45341 transitions. Word has length 133 [2022-11-03 02:36:17,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:17,208 INFO L495 AbstractCegarLoop]: Abstraction has 30228 states and 45341 transitions. [2022-11-03 02:36:17,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:36:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 30228 states and 45341 transitions. [2022-11-03 02:36:17,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-03 02:36:17,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:17,216 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-03 02:36:17,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:36:17,217 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:17,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1054842708, now seen corresponding path program 1 times [2022-11-03 02:36:17,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:17,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455581772] [2022-11-03 02:36:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:17,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:36:18,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:18,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455581772] [2022-11-03 02:36:18,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455581772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:18,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:18,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:36:18,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395968700] [2022-11-03 02:36:18,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:18,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:36:18,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:18,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:36:18,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:36:18,014 INFO L87 Difference]: Start difference. First operand 30228 states and 45341 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:36:20,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:26,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:34,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:34,736 INFO L93 Difference]: Finished difference Result 51714 states and 77267 transitions. [2022-11-03 02:36:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:36:34,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 134 [2022-11-03 02:36:34,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:34,903 INFO L225 Difference]: With dead ends: 51714 [2022-11-03 02:36:34,903 INFO L226 Difference]: Without dead ends: 30263 [2022-11-03 02:36:34,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:36:34,995 INFO L413 NwaCegarLoop]: 4404 mSDtfsCounter, 3909 mSDsluCounter, 13527 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3913 SdHoareTripleChecker+Valid, 16800 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:34,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3913 Valid, 16800 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1536 Invalid, 2 Unknown, 0 Unchecked, 15.0s Time] [2022-11-03 02:36:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30263 states. [2022-11-03 02:36:37,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30263 to 30200. [2022-11-03 02:36:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30200 states, 19244 states have (on average 1.3482643940968613) internal successors, (25946), 19706 states have internal predecessors, (25946), 9384 states have call successors, (9384), 1572 states have call predecessors, (9384), 1571 states have return successors, (9963), 9235 states have call predecessors, (9963), 9383 states have call successors, (9963) [2022-11-03 02:36:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30200 states to 30200 states and 45293 transitions. [2022-11-03 02:36:37,408 INFO L78 Accepts]: Start accepts. Automaton has 30200 states and 45293 transitions. Word has length 134 [2022-11-03 02:36:37,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:37,409 INFO L495 AbstractCegarLoop]: Abstraction has 30200 states and 45293 transitions. [2022-11-03 02:36:37,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:36:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 30200 states and 45293 transitions. [2022-11-03 02:36:37,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 02:36:37,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:37,416 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-03 02:36:37,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:36:37,416 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:37,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1937482634, now seen corresponding path program 1 times [2022-11-03 02:36:37,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:37,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312746408] [2022-11-03 02:36:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:37,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:36:37,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:37,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312746408] [2022-11-03 02:36:37,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312746408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:37,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:37,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:36:37,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863644789] [2022-11-03 02:36:37,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:37,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:36:37,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:37,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:36:37,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:36:37,901 INFO L87 Difference]: Start difference. First operand 30200 states and 45293 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:36:39,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:36:50,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:50,486 INFO L93 Difference]: Finished difference Result 46963 states and 70110 transitions. [2022-11-03 02:36:50,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:36:50,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 137 [2022-11-03 02:36:50,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:50,637 INFO L225 Difference]: With dead ends: 46963 [2022-11-03 02:36:50,637 INFO L226 Difference]: Without dead ends: 29905 [2022-11-03 02:36:50,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:36:50,716 INFO L413 NwaCegarLoop]: 3546 mSDtfsCounter, 3908 mSDsluCounter, 7837 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3912 SdHoareTripleChecker+Valid, 10625 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:50,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3912 Valid, 10625 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1155 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-11-03 02:36:50,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29905 states. [2022-11-03 02:36:52,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29905 to 29851. [2022-11-03 02:36:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29851 states, 19017 states have (on average 1.3481095861597518) internal successors, (25637), 19469 states have internal predecessors, (25637), 9273 states have call successors, (9273), 1561 states have call predecessors, (9273), 1560 states have return successors, (9852), 9131 states have call predecessors, (9852), 9272 states have call successors, (9852) [2022-11-03 02:36:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29851 states to 29851 states and 44762 transitions. [2022-11-03 02:36:52,775 INFO L78 Accepts]: Start accepts. Automaton has 29851 states and 44762 transitions. Word has length 137 [2022-11-03 02:36:52,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:52,775 INFO L495 AbstractCegarLoop]: Abstraction has 29851 states and 44762 transitions. [2022-11-03 02:36:52,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 02:36:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand 29851 states and 44762 transitions. [2022-11-03 02:36:52,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-03 02:36:52,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:52,782 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-03 02:36:52,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:36:52,783 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:52,783 INFO L85 PathProgramCache]: Analyzing trace with hash -574949944, now seen corresponding path program 1 times [2022-11-03 02:36:52,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:36:52,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745360466] [2022-11-03 02:36:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:52,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:36:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-03 02:36:53,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:53,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745360466] [2022-11-03 02:36:53,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745360466] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:36:53,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223501260] [2022-11-03 02:36:53,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:53,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:53,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:53,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:53,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:36:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:55,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:36:55,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:36:55,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:55,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223501260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:55,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:36:55,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-03 02:36:55,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303773280] [2022-11-03 02:36:55,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:55,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:36:55,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:36:55,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:36:55,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:36:55,664 INFO L87 Difference]: Start difference. First operand 29851 states and 44762 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:36:57,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:02,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:26,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:26,487 INFO L93 Difference]: Finished difference Result 69922 states and 104921 transitions. [2022-11-03 02:37:26,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:37:26,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 144 [2022-11-03 02:37:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:26,733 INFO L225 Difference]: With dead ends: 69922 [2022-11-03 02:37:26,733 INFO L226 Difference]: Without dead ends: 49767 [2022-11-03 02:37:26,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:37:26,842 INFO L413 NwaCegarLoop]: 6771 mSDtfsCounter, 3917 mSDsluCounter, 33977 mSDsCounter, 0 mSdLazyCounter, 4104 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 37459 SdHoareTripleChecker+Invalid, 4106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4104 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:26,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3921 Valid, 37459 Invalid, 4106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4104 Invalid, 1 Unknown, 0 Unchecked, 28.1s Time] [2022-11-03 02:37:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49767 states. [2022-11-03 02:37:29,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49767 to 49636. [2022-11-03 02:37:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49636 states, 31632 states have (on average 1.3485078401618613) internal successors, (42656), 32396 states have internal predecessors, (42656), 15406 states have call successors, (15406), 2590 states have call predecessors, (15406), 2597 states have return successors, (16585), 15161 states have call predecessors, (16585), 15405 states have call successors, (16585) [2022-11-03 02:37:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49636 states to 49636 states and 74647 transitions. [2022-11-03 02:37:30,325 INFO L78 Accepts]: Start accepts. Automaton has 49636 states and 74647 transitions. Word has length 144 [2022-11-03 02:37:30,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:30,325 INFO L495 AbstractCegarLoop]: Abstraction has 49636 states and 74647 transitions. [2022-11-03 02:37:30,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:37:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 49636 states and 74647 transitions. [2022-11-03 02:37:30,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-03 02:37:30,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:30,334 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-03 02:37:30,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:30,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:37:30,549 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:30,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:30,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1082106170, now seen corresponding path program 1 times [2022-11-03 02:37:30,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:30,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841791709] [2022-11-03 02:37:30,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:30,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:37:31,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:31,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841791709] [2022-11-03 02:37:31,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841791709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:37:31,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386665902] [2022-11-03 02:37:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:31,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:31,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:31,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:31,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:37:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:33,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 2920 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:37:33,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:37:33,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:37:33,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386665902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:33,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:37:33,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 02:37:33,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52566622] [2022-11-03 02:37:33,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:33,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:37:33,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:33,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:37:33,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:37:33,574 INFO L87 Difference]: Start difference. First operand 49636 states and 74647 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:37:35,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:49,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:37:57,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:11,085 INFO L93 Difference]: Finished difference Result 109536 states and 164731 transitions. [2022-11-03 02:38:11,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:38:11,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 145 [2022-11-03 02:38:11,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:11,511 INFO L225 Difference]: With dead ends: 109536 [2022-11-03 02:38:11,512 INFO L226 Difference]: Without dead ends: 69596 [2022-11-03 02:38:11,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:38:11,864 INFO L413 NwaCegarLoop]: 6887 mSDtfsCounter, 3917 mSDsluCounter, 34389 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 38027 SdHoareTripleChecker+Invalid, 4057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:11,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3921 Valid, 38027 Invalid, 4057 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4054 Invalid, 2 Unknown, 0 Unchecked, 33.3s Time] [2022-11-03 02:38:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69596 states. [2022-11-03 02:38:15,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69596 to 69441. [2022-11-03 02:38:15,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69441 states, 44259 states have (on average 1.3485844686956325) internal successors, (59687), 45347 states have internal predecessors, (59687), 21539 states have call successors, (21539), 3619 states have call predecessors, (21539), 3642 states have return successors, (23330), 21187 states have call predecessors, (23330), 21538 states have call successors, (23330) [2022-11-03 02:38:16,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69441 states to 69441 states and 104556 transitions. [2022-11-03 02:38:16,636 INFO L78 Accepts]: Start accepts. Automaton has 69441 states and 104556 transitions. Word has length 145 [2022-11-03 02:38:16,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:16,641 INFO L495 AbstractCegarLoop]: Abstraction has 69441 states and 104556 transitions. [2022-11-03 02:38:16,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:38:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 69441 states and 104556 transitions. [2022-11-03 02:38:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-03 02:38:16,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:16,651 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-03 02:38:16,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:16,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:16,877 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:16,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:16,877 INFO L85 PathProgramCache]: Analyzing trace with hash -2117425631, now seen corresponding path program 1 times [2022-11-03 02:38:16,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:16,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671206552] [2022-11-03 02:38:16,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:16,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:38:18,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:18,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671206552] [2022-11-03 02:38:18,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671206552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:18,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434922613] [2022-11-03 02:38:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:18,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:18,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:18,010 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:18,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:38:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:19,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 2922 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:38:19,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:38:20,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:38:20,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434922613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:20,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:38:20,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 02:38:20,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764681568] [2022-11-03 02:38:20,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:20,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:38:20,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:20,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:38:20,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:38:20,052 INFO L87 Difference]: Start difference. First operand 69441 states and 104556 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:38:22,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:31,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:37,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:59,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:59,759 INFO L93 Difference]: Finished difference Result 149138 states and 224533 transitions. [2022-11-03 02:38:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:38:59,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 146 [2022-11-03 02:38:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:00,384 INFO L225 Difference]: With dead ends: 149138 [2022-11-03 02:39:00,384 INFO L226 Difference]: Without dead ends: 89393 [2022-11-03 02:39:00,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:39:00,760 INFO L413 NwaCegarLoop]: 7065 mSDtfsCounter, 3917 mSDsluCounter, 35245 mSDsCounter, 0 mSdLazyCounter, 4235 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 38917 SdHoareTripleChecker+Invalid, 4238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4235 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:00,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3921 Valid, 38917 Invalid, 4238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4235 Invalid, 2 Unknown, 0 Unchecked, 33.9s Time] [2022-11-03 02:39:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89393 states. [2022-11-03 02:39:06,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89393 to 69445. [2022-11-03 02:39:06,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69445 states, 44263 states have (on average 1.348552967489777) internal successors, (59691), 45347 states have internal predecessors, (59691), 21539 states have call successors, (21539), 3619 states have call predecessors, (21539), 3642 states have return successors, (23330), 21191 states have call predecessors, (23330), 21538 states have call successors, (23330) [2022-11-03 02:39:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69445 states to 69445 states and 104560 transitions. [2022-11-03 02:39:07,689 INFO L78 Accepts]: Start accepts. Automaton has 69445 states and 104560 transitions. Word has length 146 [2022-11-03 02:39:07,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:07,690 INFO L495 AbstractCegarLoop]: Abstraction has 69445 states and 104560 transitions. [2022-11-03 02:39:07,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:39:07,690 INFO L276 IsEmpty]: Start isEmpty. Operand 69445 states and 104560 transitions. [2022-11-03 02:39:07,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-03 02:39:07,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:07,698 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-03 02:39:07,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:39:07,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:39:07,925 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:39:07,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:07,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1252360141, now seen corresponding path program 1 times [2022-11-03 02:39:07,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:07,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771668089] [2022-11-03 02:39:07,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:07,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:39:08,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:08,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771668089] [2022-11-03 02:39:08,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771668089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:39:08,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181423983] [2022-11-03 02:39:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:08,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:39:08,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:39:08,777 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:39:08,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39abbf37-dbbe-426b-98b1-3447de97d6b2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:39:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:11,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 2924 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:39:11,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:39:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:39:11,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:39:11,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181423983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:11,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:39:11,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 02:39:11,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297597162] [2022-11-03 02:39:11,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:11,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:39:11,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:11,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:39:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:39:11,480 INFO L87 Difference]: Start difference. First operand 69445 states and 104560 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:39:13,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:18,539 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 []