./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:17:26,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:17:26,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:17:26,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:17:26,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:17:26,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:17:26,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:17:26,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:17:26,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:17:26,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:17:26,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:17:26,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:17:26,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:17:26,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:17:26,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:17:26,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:17:26,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:17:26,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:17:26,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:17:26,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:17:26,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:17:26,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:17:26,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:17:26,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:17:26,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:17:26,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:17:26,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:17:26,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:17:26,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:17:26,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:17:26,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:17:26,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:17:26,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:17:26,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:17:26,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:17:26,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:17:26,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:17:26,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:17:26,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:17:26,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:17:26,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:17:26,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:17:26,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:17:26,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:17:26,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:17:26,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:17:26,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:17:26,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:17:26,845 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:17:26,845 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:17:26,845 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:17:26,846 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:17:26,847 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:17:26,847 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:17:26,848 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:17:26,848 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:17:26,848 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:17:26,849 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:17:26,849 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:17:26,849 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:17:26,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:17:26,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:17:26,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:17:26,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:17:26,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:17:26,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:17:26,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:17:26,852 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:17:26,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:17:26,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:17:26,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:17:26,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:17:26,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:17:26,855 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:17:26,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:17:26,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:17:26,856 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:17:26,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:17:26,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:17:26,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:17:26,857 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_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 [2022-11-23 15:17:27,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:17:27,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:17:27,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:17:27,213 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:17:27,213 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:17:27,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-11-23 15:17:30,779 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:17:31,601 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:17:31,602 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-11-23 15:17:31,677 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW/data/c94b0cb4e/dbe530d6c59342788802be0b24c04259/FLAG4b48d9c09 [2022-11-23 15:17:31,698 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW/data/c94b0cb4e/dbe530d6c59342788802be0b24c04259 [2022-11-23 15:17:31,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:17:31,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:17:31,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:17:31,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:17:31,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:17:31,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:17:31" (1/1) ... [2022-11-23 15:17:31,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408fcc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:31, skipping insertion in model container [2022-11-23 15:17:31,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:17:31" (1/1) ... [2022-11-23 15:17:31,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:17:31,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:17:34,694 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2022-11-23 15:17:34,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:17:34,948 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:17:35,464 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2022-11-23 15:17:35,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:17:35,647 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:17:35,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35 WrapperNode [2022-11-23 15:17:35,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:17:35,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:17:35,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:17:35,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:17:35,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:35,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:36,051 INFO L138 Inliner]: procedures = 341, calls = 1917, calls flagged for inlining = 158, calls inlined = 154, statements flattened = 4988 [2022-11-23 15:17:36,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:17:36,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:17:36,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:17:36,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:17:36,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:36,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:36,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:36,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:36,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:36,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:36,452 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:36,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:36,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:17:36,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:17:36,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:17:36,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:17:36,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (1/1) ... [2022-11-23 15:17:36,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:17:36,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:17:36,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:17:36,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68224955-be02-43f3-99b5-c80806fd29ec/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:17:36,632 INFO L130 BoogieDeclarations]: Found specification of procedure queue_iso [2022-11-23 15:17:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_iso [2022-11-23 15:17:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-23 15:17:36,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-23 15:17:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_channel [2022-11-23 15:17:36,633 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_channel [2022-11-23 15:17:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_register [2022-11-23 15:17:36,634 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_register [2022-11-23 15:17:36,634 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_establish_pp_connection [2022-11-23 15:17:36,634 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_establish_pp_connection [2022-11-23 15:17:36,634 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 15:17:36,635 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 15:17:36,635 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-23 15:17:36,635 INFO L130 BoogieDeclarations]: Found specification of procedure node_req [2022-11-23 15:17:36,636 INFO L138 BoogieDeclarations]: Found implementation of procedure node_req [2022-11-23 15:17:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:17:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:17:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_lock [2022-11-23 15:17:36,637 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_lock [2022-11-23 15:17:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-11-23 15:17:36,637 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-11-23 15:17:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-23 15:17:36,638 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-23 15:17:36,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:17:36,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:17:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_read [2022-11-23 15:17:36,640 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_read [2022-11-23 15:17:36,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2022-11-23 15:17:36,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2022-11-23 15:17:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 15:17:36,641 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 15:17:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 15:17:36,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 15:17:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure pad_operands [2022-11-23 15:17:36,642 INFO L138 BoogieDeclarations]: Found implementation of procedure pad_operands [2022-11-23 15:17:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_set_pids [2022-11-23 15:17:36,643 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_set_pids [2022-11-23 15:17:36,643 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_ca_io_poll [2022-11-23 15:17:36,643 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_ca_io_poll [2022-11-23 15:17:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-11-23 15:17:36,644 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-11-23 15:17:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_release [2022-11-23 15:17:36,644 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_release [2022-11-23 15:17:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure clear_operands [2022-11-23 15:17:36,645 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_operands [2022-11-23 15:17:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 15:17:36,645 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 15:17:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_open [2022-11-23 15:17:36,646 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_open [2022-11-23 15:17:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:17:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-11-23 15:17:36,647 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-11-23 15:17:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure avc_write [2022-11-23 15:17:36,649 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_write [2022-11-23 15:17:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure get_opcr [2022-11-23 15:17:36,649 INFO L138 BoogieDeclarations]: Found implementation of procedure get_opcr [2022-11-23 15:17:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:17:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-23 15:17:36,650 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-23 15:17:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure collect_channels [2022-11-23 15:17:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure collect_channels [2022-11-23 15:17:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:17:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:17:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_context_destroy [2022-11-23 15:17:36,652 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_context_destroy [2022-11-23 15:17:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_unregister_rc [2022-11-23 15:17:36,652 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_unregister_rc [2022-11-23 15:17:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_status [2022-11-23 15:17:36,653 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_status [2022-11-23 15:17:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 15:17:36,653 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 15:17:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 15:17:36,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 15:17:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 15:17:36,656 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 15:17:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 15:17:36,656 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 15:17:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-11-23 15:17:36,657 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-11-23 15:17:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2022-11-23 15:17:36,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2022-11-23 15:17:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:17:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-23 15:17:36,659 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-23 15:17:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure node_remove [2022-11-23 15:17:36,660 INFO L138 BoogieDeclarations]: Found implementation of procedure node_remove [2022-11-23 15:17:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:17:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_unregister [2022-11-23 15:17:36,660 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_unregister [2022-11-23 15:17:36,661 INFO L130 BoogieDeclarations]: Found specification of procedure add_pid_filter [2022-11-23 15:17:36,661 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pid_filter [2022-11-23 15:17:36,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:17:36,662 INFO L130 BoogieDeclarations]: Found specification of procedure is_register_rc [2022-11-23 15:17:36,663 INFO L138 BoogieDeclarations]: Found implementation of procedure is_register_rc [2022-11-23 15:17:36,663 INFO L130 BoogieDeclarations]: Found specification of procedure dealloc_channel [2022-11-23 15:17:36,663 INFO L138 BoogieDeclarations]: Found implementation of procedure dealloc_channel [2022-11-23 15:17:36,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:17:36,664 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:17:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:17:36,664 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:17:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-11-23 15:17:36,665 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-11-23 15:17:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:17:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2022-11-23 15:17:36,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2022-11-23 15:17:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure debug_fcp [2022-11-23 15:17:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_fcp [2022-11-23 15:17:36,666 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-11-23 15:17:36,666 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-11-23 15:17:36,667 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-23 15:17:36,668 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-23 15:17:36,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:17:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:17:36,673 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_net_release [2022-11-23 15:17:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_net_release [2022-11-23 15:17:36,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:17:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:17:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:17:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 15:17:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure set_opcr [2022-11-23 15:17:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure set_opcr [2022-11-23 15:17:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-23 15:17:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-23 15:17:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:17:36,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:17:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_buffer_destroy [2022-11-23 15:17:36,683 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_buffer_destroy [2022-11-23 15:17:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure node_probe [2022-11-23 15:17:36,684 INFO L138 BoogieDeclarations]: Found implementation of procedure node_probe [2022-11-23 15:17:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure get_ca_object_pos [2022-11-23 15:17:36,684 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ca_object_pos [2022-11-23 15:17:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure node_update [2022-11-23 15:17:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure node_update [2022-11-23 15:17:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure avc_register_remote_control [2022-11-23 15:17:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_register_remote_control [2022-11-23 15:17:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-11-23 15:17:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-11-23 15:17:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 15:17:36,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 15:17:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure device_of [2022-11-23 15:17:36,686 INFO L138 BoogieDeclarations]: Found implementation of procedure device_of [2022-11-23 15:17:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2022-11-23 15:17:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2022-11-23 15:17:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure fw_core_remove_address_handler [2022-11-23 15:17:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_core_remove_address_handler [2022-11-23 15:17:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:17:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:17:36,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:17:37,781 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:17:37,785 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:17:57,142 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:18:01,714 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:18:01,714 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:18:01,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:18:01 BoogieIcfgContainer [2022-11-23 15:18:01,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:18:01,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:18:01,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:18:01,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:18:01,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:17:31" (1/3) ... [2022-11-23 15:18:01,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16353a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:18:01, skipping insertion in model container [2022-11-23 15:18:01,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:17:35" (2/3) ... [2022-11-23 15:18:01,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16353a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:18:01, skipping insertion in model container [2022-11-23 15:18:01,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:18:01" (3/3) ... [2022-11-23 15:18:01,742 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-11-23 15:18:01,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:18:01,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:18:01,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:18:01,890 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;@66ba574c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:18:01,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:18:01,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 823 states, 513 states have (on average 1.3840155945419104) internal successors, (710), 536 states have internal predecessors, (710), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2022-11-23 15:18:01,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 15:18:01,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:01,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:01,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:18:01,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:01,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1731021513, now seen corresponding path program 1 times [2022-11-23 15:18:01,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:01,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348756922] [2022-11-23 15:18:01,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:01,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:18:02,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:02,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348756922] [2022-11-23 15:18:02,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348756922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:02,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:02,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:18:02,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171355522] [2022-11-23 15:18:02,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:02,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:18:02,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:02,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:18:02,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:02,763 INFO L87 Difference]: Start difference. First operand has 823 states, 513 states have (on average 1.3840155945419104) internal successors, (710), 536 states have internal predecessors, (710), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:18:06,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:08,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:10,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:12,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:16,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:19,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:19,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:19,460 INFO L93 Difference]: Finished difference Result 2304 states and 3426 transitions. [2022-11-23 15:18:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:18:19,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-23 15:18:19,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:19,512 INFO L225 Difference]: With dead ends: 2304 [2022-11-23 15:18:19,513 INFO L226 Difference]: Without dead ends: 1476 [2022-11-23 15:18:19,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:19,542 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 915 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:19,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2230 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 375 Invalid, 6 Unknown, 0 Unchecked, 16.4s Time] [2022-11-23 15:18:19,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-23 15:18:19,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1448. [2022-11-23 15:18:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 909 states have (on average 1.3784378437843785) internal successors, (1253), 941 states have internal predecessors, (1253), 414 states have call successors, (414), 126 states have call predecessors, (414), 124 states have return successors, (408), 404 states have call predecessors, (408), 405 states have call successors, (408) [2022-11-23 15:18:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2075 transitions. [2022-11-23 15:18:19,832 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2075 transitions. Word has length 15 [2022-11-23 15:18:19,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:19,832 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 2075 transitions. [2022-11-23 15:18:19,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:18:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2075 transitions. [2022-11-23 15:18:19,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:18:19,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:19,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:19,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:18:19,840 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:18:19,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:19,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1008113013, now seen corresponding path program 1 times [2022-11-23 15:18:19,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:19,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563562371] [2022-11-23 15:18:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:19,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:18:20,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:20,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563562371] [2022-11-23 15:18:20,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563562371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:20,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:20,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:18:20,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18705638] [2022-11-23 15:18:20,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:20,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:18:20,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:20,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:18:20,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:20,398 INFO L87 Difference]: Start difference. First operand 1448 states and 2075 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:18:23,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:25,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:27,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:30,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:34,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:37,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:37,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:37,372 INFO L93 Difference]: Finished difference Result 3533 states and 5050 transitions. [2022-11-23 15:18:37,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:18:37,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-23 15:18:37,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:37,391 INFO L225 Difference]: With dead ends: 3533 [2022-11-23 15:18:37,391 INFO L226 Difference]: Without dead ends: 2086 [2022-11-23 15:18:37,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:37,402 INFO L413 NwaCegarLoop]: 1211 mSDtfsCounter, 888 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:37,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2197 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 372 Invalid, 6 Unknown, 0 Unchecked, 16.8s Time] [2022-11-23 15:18:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2022-11-23 15:18:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 2079. [2022-11-23 15:18:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2079 states, 1308 states have (on average 1.3761467889908257) internal successors, (1800), 1351 states have internal predecessors, (1800), 585 states have call successors, (585), 188 states have call predecessors, (585), 185 states have return successors, (582), 574 states have call predecessors, (582), 576 states have call successors, (582) [2022-11-23 15:18:37,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 2967 transitions. [2022-11-23 15:18:37,541 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 2967 transitions. Word has length 16 [2022-11-23 15:18:37,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:37,542 INFO L495 AbstractCegarLoop]: Abstraction has 2079 states and 2967 transitions. [2022-11-23 15:18:37,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:18:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 2967 transitions. [2022-11-23 15:18:37,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:18:37,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:37,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:37,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:18:37,545 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:18:37,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:37,545 INFO L85 PathProgramCache]: Analyzing trace with hash 928816372, now seen corresponding path program 1 times [2022-11-23 15:18:37,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:37,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730533244] [2022-11-23 15:18:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:37,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:18:37,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:37,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730533244] [2022-11-23 15:18:37,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730533244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:37,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:37,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:18:37,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608141410] [2022-11-23 15:18:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:37,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:18:37,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:37,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:18:37,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:37,814 INFO L87 Difference]: Start difference. First operand 2079 states and 2967 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:18:41,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:43,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:45,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:47,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:52,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:54,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:18:54,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:18:54,905 INFO L93 Difference]: Finished difference Result 3618 states and 5187 transitions. [2022-11-23 15:18:54,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:18:54,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 15:18:54,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:18:54,935 INFO L225 Difference]: With dead ends: 3618 [2022-11-23 15:18:54,935 INFO L226 Difference]: Without dead ends: 3614 [2022-11-23 15:18:54,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:54,939 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 905 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:18:54,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 2048 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 331 Invalid, 6 Unknown, 0 Unchecked, 16.9s Time] [2022-11-23 15:18:54,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2022-11-23 15:18:55,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3610. [2022-11-23 15:18:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 2287 states have (on average 1.3830345430695234) internal successors, (3163), 2378 states have internal predecessors, (3163), 979 states have call successors, (979), 352 states have call predecessors, (979), 343 states have return successors, (1035), 929 states have call predecessors, (1035), 970 states have call successors, (1035) [2022-11-23 15:18:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 5177 transitions. [2022-11-23 15:18:55,192 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 5177 transitions. Word has length 16 [2022-11-23 15:18:55,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:18:55,193 INFO L495 AbstractCegarLoop]: Abstraction has 3610 states and 5177 transitions. [2022-11-23 15:18:55,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:18:55,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 5177 transitions. [2022-11-23 15:18:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:18:55,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:18:55,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:18:55,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:18:55,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:18:55,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:18:55,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1271946658, now seen corresponding path program 1 times [2022-11-23 15:18:55,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:18:55,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258828273] [2022-11-23 15:18:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:18:55,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:18:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:18:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:18:55,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:18:55,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258828273] [2022-11-23 15:18:55,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258828273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:18:55,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:18:55,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:18:55,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900517714] [2022-11-23 15:18:55,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:18:55,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:18:55,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:18:55,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:18:55,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:18:55,462 INFO L87 Difference]: Start difference. First operand 3610 states and 5177 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:18:58,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:00,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:02,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:04,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:09,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:11,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:13,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:13,201 INFO L93 Difference]: Finished difference Result 6038 states and 8668 transitions. [2022-11-23 15:19:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:13,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 15:19:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:13,248 INFO L225 Difference]: With dead ends: 6038 [2022-11-23 15:19:13,249 INFO L226 Difference]: Without dead ends: 6035 [2022-11-23 15:19:13,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:13,256 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 1071 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:13,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 2221 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 358 Invalid, 6 Unknown, 0 Unchecked, 17.5s Time] [2022-11-23 15:19:13,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6035 states. [2022-11-23 15:19:13,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6035 to 6026. [2022-11-23 15:19:13,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 3823 states have (on average 1.385037928328538) internal successors, (5295), 3973 states have internal predecessors, (5295), 1630 states have call successors, (1630), 587 states have call predecessors, (1630), 572 states have return successors, (1732), 1549 states have call predecessors, (1732), 1621 states have call successors, (1732) [2022-11-23 15:19:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 8657 transitions. [2022-11-23 15:19:13,917 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 8657 transitions. Word has length 17 [2022-11-23 15:19:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:13,918 INFO L495 AbstractCegarLoop]: Abstraction has 6026 states and 8657 transitions. [2022-11-23 15:19:13,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:19:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 8657 transitions. [2022-11-23 15:19:13,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 15:19:13,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:13,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:13,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:19:13,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:13,923 INFO L85 PathProgramCache]: Analyzing trace with hash -776118985, now seen corresponding path program 1 times [2022-11-23 15:19:13,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:13,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047138806] [2022-11-23 15:19:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:13,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:19:14,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:14,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047138806] [2022-11-23 15:19:14,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047138806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:14,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:14,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:19:14,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742288099] [2022-11-23 15:19:14,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:14,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:14,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:14,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:14,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:14,204 INFO L87 Difference]: Start difference. First operand 6026 states and 8657 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:19:16,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:18,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:21,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:23,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:28,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:30,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:31,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:31,081 INFO L93 Difference]: Finished difference Result 11258 states and 16481 transitions. [2022-11-23 15:19:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:31,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-23 15:19:31,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:31,162 INFO L225 Difference]: With dead ends: 11258 [2022-11-23 15:19:31,163 INFO L226 Difference]: Without dead ends: 11254 [2022-11-23 15:19:31,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:31,174 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 955 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:31,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 2217 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 366 Invalid, 6 Unknown, 0 Unchecked, 16.4s Time] [2022-11-23 15:19:31,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11254 states. [2022-11-23 15:19:31,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11254 to 11246. [2022-11-23 15:19:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11246 states, 7163 states have (on average 1.3862906603378473) internal successors, (9930), 7445 states have internal predecessors, (9930), 3015 states have call successors, (3015), 1107 states have call predecessors, (3015), 1067 states have return successors, (3515), 2851 states have call predecessors, (3515), 3006 states have call successors, (3515) [2022-11-23 15:19:32,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11246 states to 11246 states and 16460 transitions. [2022-11-23 15:19:32,039 INFO L78 Accepts]: Start accepts. Automaton has 11246 states and 16460 transitions. Word has length 18 [2022-11-23 15:19:32,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:32,039 INFO L495 AbstractCegarLoop]: Abstraction has 11246 states and 16460 transitions. [2022-11-23 15:19:32,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:19:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 11246 states and 16460 transitions. [2022-11-23 15:19:32,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 15:19:32,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:32,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:32,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:19:32,043 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:32,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:32,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1709641857, now seen corresponding path program 1 times [2022-11-23 15:19:32,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:32,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265164770] [2022-11-23 15:19:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:32,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:19:32,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:32,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265164770] [2022-11-23 15:19:32,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265164770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:32,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:32,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:19:32,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63218611] [2022-11-23 15:19:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:32,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:32,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:32,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:32,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:32,262 INFO L87 Difference]: Start difference. First operand 11246 states and 16460 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:19:34,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:36,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:39,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:41,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:43,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:45,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:48,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:19:49,586 INFO L93 Difference]: Finished difference Result 11262 states and 16476 transitions. [2022-11-23 15:19:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:19:49,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-23 15:19:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:19:49,669 INFO L225 Difference]: With dead ends: 11262 [2022-11-23 15:19:49,670 INFO L226 Difference]: Without dead ends: 11259 [2022-11-23 15:19:49,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:49,682 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 1067 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:19:49,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 2227 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 358 Invalid, 6 Unknown, 0 Unchecked, 16.9s Time] [2022-11-23 15:19:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11259 states. [2022-11-23 15:19:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11259 to 11249. [2022-11-23 15:19:50,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11249 states, 7166 states have (on average 1.3862684900921016) internal successors, (9934), 7448 states have internal predecessors, (9934), 3015 states have call successors, (3015), 1107 states have call predecessors, (3015), 1067 states have return successors, (3515), 2851 states have call predecessors, (3515), 3006 states have call successors, (3515) [2022-11-23 15:19:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11249 states to 11249 states and 16464 transitions. [2022-11-23 15:19:50,570 INFO L78 Accepts]: Start accepts. Automaton has 11249 states and 16464 transitions. Word has length 19 [2022-11-23 15:19:50,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:19:50,570 INFO L495 AbstractCegarLoop]: Abstraction has 11249 states and 16464 transitions. [2022-11-23 15:19:50,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:19:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand 11249 states and 16464 transitions. [2022-11-23 15:19:50,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 15:19:50,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:50,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:50,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:19:50,572 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:19:50,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:50,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1458821498, now seen corresponding path program 1 times [2022-11-23 15:19:50,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:50,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114516017] [2022-11-23 15:19:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:50,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:19:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:19:50,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:19:50,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114516017] [2022-11-23 15:19:50,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114516017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:19:50,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:19:50,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:19:50,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625086389] [2022-11-23 15:19:50,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:19:50,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:19:50,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:19:50,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:19:50,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:19:50,796 INFO L87 Difference]: Start difference. First operand 11249 states and 16464 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:19:53,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:55,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:19:57,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:00,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:03,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:06,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:07,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:07,477 INFO L93 Difference]: Finished difference Result 11263 states and 16476 transitions. [2022-11-23 15:20:07,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:20:07,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-23 15:20:07,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:07,542 INFO L225 Difference]: With dead ends: 11263 [2022-11-23 15:20:07,542 INFO L226 Difference]: Without dead ends: 11250 [2022-11-23 15:20:07,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:20:07,552 INFO L413 NwaCegarLoop]: 1233 mSDtfsCounter, 1064 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:07,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 2231 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 357 Invalid, 6 Unknown, 0 Unchecked, 16.2s Time] [2022-11-23 15:20:07,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11250 states. [2022-11-23 15:20:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11250 to 11240. [2022-11-23 15:20:08,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11240 states, 7159 states have (on average 1.3859477580667692) internal successors, (9922), 7441 states have internal predecessors, (9922), 3014 states have call successors, (3014), 1106 states have call predecessors, (3014), 1066 states have return successors, (3514), 2850 states have call predecessors, (3514), 3005 states have call successors, (3514) [2022-11-23 15:20:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11240 states to 11240 states and 16450 transitions. [2022-11-23 15:20:08,418 INFO L78 Accepts]: Start accepts. Automaton has 11240 states and 16450 transitions. Word has length 20 [2022-11-23 15:20:08,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:08,418 INFO L495 AbstractCegarLoop]: Abstraction has 11240 states and 16450 transitions. [2022-11-23 15:20:08,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:20:08,419 INFO L276 IsEmpty]: Start isEmpty. Operand 11240 states and 16450 transitions. [2022-11-23 15:20:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-23 15:20:08,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:08,423 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:20:08,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:20:08,424 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:20:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:08,424 INFO L85 PathProgramCache]: Analyzing trace with hash -505345, now seen corresponding path program 1 times [2022-11-23 15:20:08,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:08,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934283569] [2022-11-23 15:20:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:08,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:20:09,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:09,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934283569] [2022-11-23 15:20:09,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934283569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:09,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:09,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:20:09,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90557996] [2022-11-23 15:20:09,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:09,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:20:09,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:09,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:20:09,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:20:09,012 INFO L87 Difference]: Start difference. First operand 11240 states and 16450 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 15:20:12,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:14,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:16,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:19,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:25,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:28,326 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 [] [2022-11-23 15:20:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:28,547 INFO L93 Difference]: Finished difference Result 20454 states and 29945 transitions. [2022-11-23 15:20:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:20:28,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-23 15:20:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:28,605 INFO L225 Difference]: With dead ends: 20454 [2022-11-23 15:20:28,605 INFO L226 Difference]: Without dead ends: 11310 [2022-11-23 15:20:28,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:20:28,654 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 39 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 6 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:28,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2997 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 533 Invalid, 6 Unknown, 0 Unchecked, 19.0s Time] [2022-11-23 15:20:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11310 states. [2022-11-23 15:20:29,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11310 to 11254. [2022-11-23 15:20:29,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11254 states, 7173 states have (on average 1.385055067614666) internal successors, (9935), 7455 states have internal predecessors, (9935), 3014 states have call successors, (3014), 1106 states have call predecessors, (3014), 1066 states have return successors, (3514), 2850 states have call predecessors, (3514), 3005 states have call successors, (3514) [2022-11-23 15:20:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11254 states to 11254 states and 16463 transitions. [2022-11-23 15:20:29,369 INFO L78 Accepts]: Start accepts. Automaton has 11254 states and 16463 transitions. Word has length 41 [2022-11-23 15:20:29,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:29,371 INFO L495 AbstractCegarLoop]: Abstraction has 11254 states and 16463 transitions. [2022-11-23 15:20:29,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 15:20:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 11254 states and 16463 transitions. [2022-11-23 15:20:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-23 15:20:29,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:29,378 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:20:29,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:20:29,379 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:20:29,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:29,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1695659563, now seen corresponding path program 1 times [2022-11-23 15:20:29,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:29,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176714947] [2022-11-23 15:20:29,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:29,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:20:29,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:29,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176714947] [2022-11-23 15:20:29,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176714947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:29,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:29,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:20:29,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634933610] [2022-11-23 15:20:29,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:29,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:20:29,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:29,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:20:29,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:20:29,873 INFO L87 Difference]: Start difference. First operand 11254 states and 16463 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 15:20:33,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:35,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:37,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:39,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:42,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:47,811 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 [] [2022-11-23 15:20:49,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:20:49,038 INFO L93 Difference]: Finished difference Result 20402 states and 29858 transitions. [2022-11-23 15:20:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:20:49,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-23 15:20:49,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:20:49,092 INFO L225 Difference]: With dead ends: 20402 [2022-11-23 15:20:49,092 INFO L226 Difference]: Without dead ends: 11246 [2022-11-23 15:20:49,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:20:49,134 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 1047 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:20:49,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 3439 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 547 Invalid, 6 Unknown, 0 Unchecked, 18.5s Time] [2022-11-23 15:20:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11246 states. [2022-11-23 15:20:49,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11246 to 11236. [2022-11-23 15:20:49,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11236 states, 7167 states have (on average 1.3848193107297335) internal successors, (9925), 7447 states have internal predecessors, (9925), 3002 states have call successors, (3002), 1106 states have call predecessors, (3002), 1066 states have return successors, (3502), 2840 states have call predecessors, (3502), 2993 states have call successors, (3502) [2022-11-23 15:20:49,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11236 states to 11236 states and 16429 transitions. [2022-11-23 15:20:49,890 INFO L78 Accepts]: Start accepts. Automaton has 11236 states and 16429 transitions. Word has length 43 [2022-11-23 15:20:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:20:49,890 INFO L495 AbstractCegarLoop]: Abstraction has 11236 states and 16429 transitions. [2022-11-23 15:20:49,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 15:20:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 11236 states and 16429 transitions. [2022-11-23 15:20:49,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 15:20:49,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:20:49,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:20:49,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:20:49,896 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:20:49,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:20:49,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1750655457, now seen corresponding path program 1 times [2022-11-23 15:20:49,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:20:49,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314285051] [2022-11-23 15:20:49,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:20:49,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:20:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:20:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:20:50,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:20:50,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314285051] [2022-11-23 15:20:50,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314285051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:50,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:20:50,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:20:50,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333998320] [2022-11-23 15:20:50,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:50,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:20:50,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:50,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:20:50,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:20:50,112 INFO L87 Difference]: Start difference. First operand 11236 states and 16429 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:20:53,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:55,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:57,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:20:59,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:01,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:04,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:08,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:21:08,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:08,300 INFO L93 Difference]: Finished difference Result 23201 states and 33966 transitions. [2022-11-23 15:21:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:21:08,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2022-11-23 15:21:08,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:08,350 INFO L225 Difference]: With dead ends: 23201 [2022-11-23 15:21:08,350 INFO L226 Difference]: Without dead ends: 11966 [2022-11-23 15:21:08,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:21:08,392 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 419 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:08,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 2199 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 390 Invalid, 6 Unknown, 0 Unchecked, 17.6s Time] [2022-11-23 15:21:08,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11966 states. [2022-11-23 15:21:09,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11966 to 11827. [2022-11-23 15:21:09,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11827 states, 7767 states have (on average 1.419595725505343) internal successors, (11026), 8082 states have internal predecessors, (11026), 2966 states have call successors, (2966), 1137 states have call predecessors, (2966), 1093 states have return successors, (3362), 2786 states have call predecessors, (3362), 2957 states have call successors, (3362) [2022-11-23 15:21:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11827 states to 11827 states and 17354 transitions. [2022-11-23 15:21:09,134 INFO L78 Accepts]: Start accepts. Automaton has 11827 states and 17354 transitions. Word has length 55 [2022-11-23 15:21:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:09,135 INFO L495 AbstractCegarLoop]: Abstraction has 11827 states and 17354 transitions. [2022-11-23 15:21:09,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:21:09,135 INFO L276 IsEmpty]: Start isEmpty. Operand 11827 states and 17354 transitions. [2022-11-23 15:21:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 15:21:09,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:09,139 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 15:21:09,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:21:09,140 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:09,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:09,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1292758447, now seen corresponding path program 1 times [2022-11-23 15:21:09,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:09,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843718170] [2022-11-23 15:21:09,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:09,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms