./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V --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 2d3fedd3393c9ef9037d23202ca807e49e09d9211ff455e3da7db836a65b4737 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:35:11,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:35:11,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:35:11,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:35:11,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:35:11,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:35:11,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:35:11,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:35:11,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:35:11,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:35:11,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:35:11,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:35:11,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:35:11,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:35:11,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:35:11,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:35:11,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:35:11,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:35:11,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:35:11,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:35:11,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:35:11,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:35:11,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:35:11,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:35:11,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:35:11,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:35:11,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:35:11,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:35:11,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:35:11,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:35:11,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:35:11,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:35:11,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:35:11,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:35:11,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:35:11,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:35:11,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:35:11,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:35:11,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:35:11,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:35:11,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:35:11,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:35:11,606 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:35:11,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:35:11,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:35:11,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:35:11,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:35:11,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:35:11,608 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:35:11,609 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:35:11,609 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:35:11,609 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:35:11,609 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:35:11,610 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:35:11,610 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:35:11,610 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:35:11,611 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:35:11,611 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:35:11,611 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:35:11,612 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:35:11,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:35:11,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:35:11,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:35:11,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:35:11,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:35:11,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:35:11,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:35:11,615 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:35:11,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:35:11,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:35:11,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:35:11,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:35:11,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:35:11,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:35:11,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:35:11,617 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:35:11,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:35:11,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:35:11,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:35:11,618 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:35:11,619 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d3fedd3393c9ef9037d23202ca807e49e09d9211ff455e3da7db836a65b4737 [2021-11-23 02:35:11,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:35:11,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:35:11,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:35:11,928 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:35:11,929 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:35:11,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.i [2021-11-23 02:35:12,025 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/data/4be0f3565/d1653fc0d73345afa329855f76e4e1ff/FLAG75561a699 [2021-11-23 02:35:13,200 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:35:13,202 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.i [2021-11-23 02:35:13,270 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/data/4be0f3565/d1653fc0d73345afa329855f76e4e1ff/FLAG75561a699 [2021-11-23 02:35:13,424 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/data/4be0f3565/d1653fc0d73345afa329855f76e4e1ff [2021-11-23 02:35:13,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:35:13,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:35:13,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:35:13,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:35:13,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:35:13,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:35:13" (1/1) ... [2021-11-23 02:35:13,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df53382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:13, skipping insertion in model container [2021-11-23 02:35:13,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:35:13" (1/1) ... [2021-11-23 02:35:13,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:35:13,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:35:18,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.i[367278,367291] [2021-11-23 02:35:18,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:35:18,709 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:35:19,459 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.i[367278,367291] [2021-11-23 02:35:19,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:35:19,962 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:35:19,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:19 WrapperNode [2021-11-23 02:35:19,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:35:19,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:35:19,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:35:19,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:35:19,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:19" (1/1) ... [2021-11-23 02:35:20,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:19" (1/1) ... [2021-11-23 02:35:20,477 INFO L137 Inliner]: procedures = 565, calls = 3127, calls flagged for inlining = 257, calls inlined = 249, statements flattened = 8798 [2021-11-23 02:35:20,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:35:20,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:35:20,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:35:20,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:35:20,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:19" (1/1) ... [2021-11-23 02:35:20,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:19" (1/1) ... [2021-11-23 02:35:20,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:19" (1/1) ... [2021-11-23 02:35:20,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:19" (1/1) ... [2021-11-23 02:35:20,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:19" (1/1) ... [2021-11-23 02:35:20,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:19" (1/1) ... [2021-11-23 02:35:21,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:19" (1/1) ... [2021-11-23 02:35:21,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:35:21,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:35:21,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:35:21,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:35:21,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:19" (1/1) ... [2021-11-23 02:35:21,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:35:21,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:35:21,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:35:21,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7c0cf2e-cc95-4808-823b-c33c7949632c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:35:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_ref [2021-11-23 02:35:21,210 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_ref [2021-11-23 02:35:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure mga_crtc_cursor_set [2021-11-23 02:35:21,211 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_crtc_cursor_set [2021-11-23 02:35:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:35:21,211 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:35:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:35:21,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:35:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure mga_pci_remove [2021-11-23 02:35:21,212 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_pci_remove [2021-11-23 02:35:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure mga_crtc_load_lut [2021-11-23 02:35:21,212 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_crtc_load_lut [2021-11-23 02:35:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure mga_user_framebuffer_destroy [2021-11-23 02:35:21,213 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_user_framebuffer_destroy [2021-11-23 02:35:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_probe_single_connector_modes [2021-11-23 02:35:21,213 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_probe_single_connector_modes [2021-11-23 02:35:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2021-11-23 02:35:21,214 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2021-11-23 02:35:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-23 02:35:21,214 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-23 02:35:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-23 02:35:21,214 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-23 02:35:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-23 02:35:21,215 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-23 02:35:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 02:35:21,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 02:35:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:35:21,216 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:35:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure __ww_mutex_lock [2021-11-23 02:35:21,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __ww_mutex_lock [2021-11-23 02:35:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure mga_crtc_disable [2021-11-23 02:35:21,216 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_crtc_disable [2021-11-23 02:35:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_base_of_ww_mutex [2021-11-23 02:35:21,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_base_of_ww_mutex [2021-11-23 02:35:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2021-11-23 02:35:21,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2021-11-23 02:35:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 02:35:21,218 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 02:35:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:35:21,218 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:35:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_bo_unpin [2021-11-23 02:35:21,218 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_bo_unpin [2021-11-23 02:35:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:35:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure mga_dirty_update [2021-11-23 02:35:21,219 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_dirty_update [2021-11-23 02:35:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure drm_fb_helper_fini [2021-11-23 02:35:21,219 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_fb_helper_fini [2021-11-23 02:35:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kmap [2021-11-23 02:35:21,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kmap [2021-11-23 02:35:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_del_sub_from_lru [2021-11-23 02:35:21,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_del_sub_from_lru [2021-11-23 02:35:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure mga_crtc_dpms [2021-11-23 02:35:21,221 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_crtc_dpms [2021-11-23 02:35:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_driver_unload [2021-11-23 02:35:21,221 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_driver_unload [2021-11-23 02:35:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_ttm_tt_unpopulate [2021-11-23 02:35:21,221 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_ttm_tt_unpopulate [2021-11-23 02:35:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:35:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kunmap [2021-11-23 02:35:21,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kunmap [2021-11-23 02:35:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure mga_encoder_prepare [2021-11-23 02:35:21,222 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_encoder_prepare [2021-11-23 02:35:21,223 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_unref [2021-11-23 02:35:21,223 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_unref [2021-11-23 02:35:21,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:35:21,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:35:21,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:35:21,223 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:35:21,224 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_apertures [2021-11-23 02:35:21,224 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_apertures [2021-11-23 02:35:21,224 INFO L130 BoogieDeclarations]: Found specification of procedure mga_hide_cursor [2021-11-23 02:35:21,224 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_hide_cursor [2021-11-23 02:35:21,224 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference [2021-11-23 02:35:21,225 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference [2021-11-23 02:35:21,225 INFO L130 BoogieDeclarations]: Found specification of procedure mga_crtc_commit [2021-11-23 02:35:21,225 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_crtc_commit [2021-11-23 02:35:21,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 02:35:21,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 02:35:21,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:35:21,226 INFO L130 BoogieDeclarations]: Found specification of procedure __devm_request_region [2021-11-23 02:35:21,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __devm_request_region [2021-11-23 02:35:21,226 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_gem_free_object [2021-11-23 02:35:21,226 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_gem_free_object [2021-11-23 02:35:21,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:35:21,227 INFO L130 BoogieDeclarations]: Found specification of procedure mga_encoder_commit [2021-11-23 02:35:21,227 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_encoder_commit [2021-11-23 02:35:21,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_base_of_ww_mutex [2021-11-23 02:35:21,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_base_of_ww_mutex [2021-11-23 02:35:21,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:35:21,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:35:21,228 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:35:21,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:35:21,228 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_gem_create [2021-11-23 02:35:21,229 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_gem_create [2021-11-23 02:35:21,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:35:21,229 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:35:21,229 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-23 02:35:21,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-23 02:35:21,230 INFO L130 BoogieDeclarations]: Found specification of procedure mga_encoder_dpms [2021-11-23 02:35:21,230 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_encoder_dpms [2021-11-23 02:35:21,230 INFO L130 BoogieDeclarations]: Found specification of procedure mga_vga_calculate_mode_bandwidth [2021-11-23 02:35:21,230 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_vga_calculate_mode_bandwidth [2021-11-23 02:35:21,230 INFO L130 BoogieDeclarations]: Found specification of procedure mga_crtc_destroy [2021-11-23 02:35:21,230 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_crtc_destroy [2021-11-23 02:35:21,231 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-23 02:35:21,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-23 02:35:21,231 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-11-23 02:35:21,231 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-11-23 02:35:21,231 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_validate [2021-11-23 02:35:21,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_validate [2021-11-23 02:35:21,232 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_bo_pin [2021-11-23 02:35:21,232 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_bo_pin [2021-11-23 02:35:21,232 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:35:21,232 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:35:21,233 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_ttm_placement [2021-11-23 02:35:21,233 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_ttm_placement [2021-11-23 02:35:21,233 INFO L130 BoogieDeclarations]: Found specification of procedure mga_crtc_cursor_move [2021-11-23 02:35:21,233 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_crtc_cursor_move [2021-11-23 02:35:21,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:35:21,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:35:21,234 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_mmap [2021-11-23 02:35:21,234 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_mmap [2021-11-23 02:35:21,234 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_bo_unreserve [2021-11-23 02:35:21,234 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_bo_unreserve [2021-11-23 02:35:21,235 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 02:35:21,235 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 02:35:21,235 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_bo_push_sysram [2021-11-23 02:35:21,235 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_bo_push_sysram [2021-11-23 02:35:21,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:35:21,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:35:21,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:35:21,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:35:21,236 INFO L130 BoogieDeclarations]: Found specification of procedure mga_crtc_mode_set [2021-11-23 02:35:21,236 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_crtc_mode_set [2021-11-23 02:35:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 02:35:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_bo_gpu_offset [2021-11-23 02:35:21,237 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_bo_gpu_offset [2021-11-23 02:35:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_base_of_ww_mutex [2021-11-23 02:35:21,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_base_of_ww_mutex [2021-11-23 02:35:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2021-11-23 02:35:21,238 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2021-11-23 02:35:21,238 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:35:21,238 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:35:21,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:35:21,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:35:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:35:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:35:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:35:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:35:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:35:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:35:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked [2021-11-23 02:35:21,240 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked [2021-11-23 02:35:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-23 02:35:21,240 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-23 02:35:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-23 02:35:21,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-23 02:35:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:35:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_free [2021-11-23 02:35:21,241 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_free [2021-11-23 02:35:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2021-11-23 02:35:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2021-11-23 02:35:21,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2021-11-23 02:35:21,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:35:21,242 INFO L130 BoogieDeclarations]: Found specification of procedure mga_crtc_mode_fixup [2021-11-23 02:35:21,242 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_crtc_mode_fixup [2021-11-23 02:35:21,242 INFO L130 BoogieDeclarations]: Found specification of procedure __ww_mutex_lock_interruptible [2021-11-23 02:35:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __ww_mutex_lock_interruptible [2021-11-23 02:35:21,243 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_ttm_backend_destroy [2021-11-23 02:35:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_ttm_backend_destroy [2021-11-23 02:35:21,243 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-11-23 02:35:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-11-23 02:35:21,244 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_bo_create [2021-11-23 02:35:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_bo_create [2021-11-23 02:35:21,244 INFO L130 BoogieDeclarations]: Found specification of procedure mga_crtc_do_set_base [2021-11-23 02:35:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_crtc_do_set_base [2021-11-23 02:35:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:35:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:35:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:35:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_bo_reserve___0 [2021-11-23 02:35:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_bo_reserve___0 [2021-11-23 02:35:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure mga_encoder_destroy [2021-11-23 02:35:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_encoder_destroy [2021-11-23 02:35:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure mga_crtc_prepare [2021-11-23 02:35:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_crtc_prepare [2021-11-23 02:35:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_bo [2021-11-23 02:35:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_bo [2021-11-23 02:35:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure mga_crtc_gamma_set [2021-11-23 02:35:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_crtc_gamma_set [2021-11-23 02:35:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure mga_connector_destroy [2021-11-23 02:35:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_connector_destroy [2021-11-23 02:35:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-23 02:35:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-23 02:35:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_mutex_19 [2021-11-23 02:35:21,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_mutex_19 [2021-11-23 02:35:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure remove_conflicting_framebuffers [2021-11-23 02:35:21,248 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_conflicting_framebuffers [2021-11-23 02:35:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_connector_dpms [2021-11-23 02:35:21,249 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_connector_dpms [2021-11-23 02:35:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_framebuffer_init [2021-11-23 02:35:21,249 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_framebuffer_init [2021-11-23 02:35:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:35:21,249 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:35:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:35:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:35:21,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:35:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure drm_framebuffer_cleanup [2021-11-23 02:35:21,250 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_framebuffer_cleanup [2021-11-23 02:35:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure mgag200_bo_reserve [2021-11-23 02:35:21,250 INFO L138 BoogieDeclarations]: Found implementation of procedure mgag200_bo_reserve [2021-11-23 02:35:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 02:35:21,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 02:35:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2021-11-23 02:35:21,251 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2021-11-23 02:35:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure drm_crtc_helper_set_config [2021-11-23 02:35:21,251 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_crtc_helper_set_config [2021-11-23 02:35:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure drm_poll [2021-11-23 02:35:21,252 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_poll [2021-11-23 02:35:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure mga_crtc_mode_set_base [2021-11-23 02:35:21,252 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_crtc_mode_set_base [2021-11-23 02:35:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure mga_vga_detect [2021-11-23 02:35:21,253 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_vga_detect [2021-11-23 02:35:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_lookup [2021-11-23 02:35:21,253 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_lookup [2021-11-23 02:35:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure mga_i2c_set [2021-11-23 02:35:21,253 INFO L138 BoogieDeclarations]: Found implementation of procedure mga_i2c_set [2021-11-23 02:35:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:35:22,575 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:35:22,581 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:35:23,170 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:35:39,489 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:35:42,670 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:35:42,671 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:35:42,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:35:42 BoogieIcfgContainer [2021-11-23 02:35:42,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:35:42,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:35:42,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:35:42,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:35:42,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:35:13" (1/3) ... [2021-11-23 02:35:42,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219f5600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:35:42, skipping insertion in model container [2021-11-23 02:35:42,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:19" (2/3) ... [2021-11-23 02:35:42,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219f5600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:35:42, skipping insertion in model container [2021-11-23 02:35:42,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:35:42" (3/3) ... [2021-11-23 02:35:42,693 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--mgag200--mgag200.ko-entry_point.cil.out.i [2021-11-23 02:35:42,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:35:42,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:35:42,795 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:35:42,805 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:35:42,805 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:35:42,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 2388 states, 1471 states have (on average 1.336505778382053) internal successors, (1966), 1550 states have internal predecessors, (1966), 812 states have call successors, (812), 104 states have call predecessors, (812), 103 states have return successors, (795), 777 states have call predecessors, (795), 795 states have call successors, (795) [2021-11-23 02:35:42,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-23 02:35:42,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:42,937 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:42,937 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:42,948 INFO L85 PathProgramCache]: Analyzing trace with hash -875053381, now seen corresponding path program 1 times [2021-11-23 02:35:42,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:42,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31022701] [2021-11-23 02:35:42,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:42,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-11-23 02:35:44,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:44,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31022701] [2021-11-23 02:35:44,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31022701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:44,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:35:44,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:35:44,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508603109] [2021-11-23 02:35:44,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:44,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:35:44,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:44,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:35:44,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:35:44,129 INFO L87 Difference]: Start difference. First operand has 2388 states, 1471 states have (on average 1.336505778382053) internal successors, (1966), 1550 states have internal predecessors, (1966), 812 states have call successors, (812), 104 states have call predecessors, (812), 103 states have return successors, (795), 777 states have call predecessors, (795), 795 states have call successors, (795) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-23 02:35:47,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:49,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:51,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:55,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:58,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:35:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:58,457 INFO L93 Difference]: Finished difference Result 6485 states and 9784 transitions. [2021-11-23 02:35:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:35:58,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 194 [2021-11-23 02:35:58,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:58,535 INFO L225 Difference]: With dead ends: 6485 [2021-11-23 02:35:58,535 INFO L226 Difference]: Without dead ends: 4074 [2021-11-23 02:35:58,560 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:35:58,565 INFO L933 BasicCegarLoop]: 3792 mSDtfsCounter, 2569 mSDsluCounter, 3547 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 7059 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:58,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2572 Valid, 7059 Invalid, 582 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 576 Invalid, 3 Unknown, 0 Unchecked, 13.8s Time] [2021-11-23 02:35:58,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2021-11-23 02:35:59,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4066. [2021-11-23 02:35:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4066 states, 2559 states have (on average 1.3376318874560376) internal successors, (3423), 2666 states have internal predecessors, (3423), 1305 states have call successors, (1305), 202 states have call predecessors, (1305), 201 states have return successors, (1293), 1257 states have call predecessors, (1293), 1293 states have call successors, (1293) [2021-11-23 02:35:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4066 states to 4066 states and 6021 transitions. [2021-11-23 02:35:59,182 INFO L78 Accepts]: Start accepts. Automaton has 4066 states and 6021 transitions. Word has length 194 [2021-11-23 02:35:59,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:59,185 INFO L470 AbstractCegarLoop]: Abstraction has 4066 states and 6021 transitions. [2021-11-23 02:35:59,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-23 02:35:59,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4066 states and 6021 transitions. [2021-11-23 02:35:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-23 02:35:59,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:59,192 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:59,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:35:59,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:59,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:59,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1862756196, now seen corresponding path program 1 times [2021-11-23 02:35:59,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:59,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192834531] [2021-11-23 02:35:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:59,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-11-23 02:35:59,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:59,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192834531] [2021-11-23 02:35:59,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192834531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:59,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:35:59,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:35:59,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308838990] [2021-11-23 02:35:59,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:59,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:35:59,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:59,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:35:59,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:35:59,629 INFO L87 Difference]: Start difference. First operand 4066 states and 6021 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:36:03,931 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:06,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:09,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:09,410 INFO L93 Difference]: Finished difference Result 7480 states and 11110 transitions. [2021-11-23 02:36:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:36:09,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 197 [2021-11-23 02:36:09,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:09,492 INFO L225 Difference]: With dead ends: 7480 [2021-11-23 02:36:09,492 INFO L226 Difference]: Without dead ends: 7474 [2021-11-23 02:36:09,500 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:36:09,502 INFO L933 BasicCegarLoop]: 3893 mSDtfsCounter, 2567 mSDsluCounter, 3446 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 7064 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:09,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2567 Valid, 7064 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 578 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2021-11-23 02:36:09,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2021-11-23 02:36:10,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 7463. [2021-11-23 02:36:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7463 states, 4744 states have (on average 1.3494940978077572) internal successors, (6402), 4957 states have internal predecessors, (6402), 2327 states have call successors, (2327), 398 states have call predecessors, (2327), 391 states have return successors, (2353), 2225 states have call predecessors, (2353), 2315 states have call successors, (2353) [2021-11-23 02:36:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7463 states to 7463 states and 11082 transitions. [2021-11-23 02:36:10,466 INFO L78 Accepts]: Start accepts. Automaton has 7463 states and 11082 transitions. Word has length 197 [2021-11-23 02:36:10,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:10,470 INFO L470 AbstractCegarLoop]: Abstraction has 7463 states and 11082 transitions. [2021-11-23 02:36:10,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:36:10,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7463 states and 11082 transitions. [2021-11-23 02:36:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-23 02:36:10,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:10,479 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:10,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:36:10,480 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:10,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:10,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2115253107, now seen corresponding path program 1 times [2021-11-23 02:36:10,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:10,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130340844] [2021-11-23 02:36:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:10,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-11-23 02:36:10,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:10,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130340844] [2021-11-23 02:36:10,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130340844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:10,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:36:10,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:36:10,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343906180] [2021-11-23 02:36:10,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:10,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:36:10,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:10,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:36:10,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:36:10,866 INFO L87 Difference]: Start difference. First operand 7463 states and 11082 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-23 02:36:14,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:17,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:21,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:22,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:23,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:23,511 INFO L93 Difference]: Finished difference Result 20988 states and 31122 transitions. [2021-11-23 02:36:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:36:23,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 199 [2021-11-23 02:36:23,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:23,676 INFO L225 Difference]: With dead ends: 20988 [2021-11-23 02:36:23,676 INFO L226 Difference]: Without dead ends: 13560 [2021-11-23 02:36:23,738 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:36:23,746 INFO L933 BasicCegarLoop]: 3687 mSDtfsCounter, 2348 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 6840 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:23,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2351 Valid, 6840 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 578 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2021-11-23 02:36:23,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13560 states. [2021-11-23 02:36:25,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13560 to 13533. [2021-11-23 02:36:25,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13533 states, 8642 states have (on average 1.3547789863457533) internal successors, (11708), 9053 states have internal predecessors, (11708), 4143 states have call successors, (4143), 760 states have call predecessors, (4143), 747 states have return successors, (4205), 3949 states have call predecessors, (4205), 4131 states have call successors, (4205) [2021-11-23 02:36:25,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13533 states to 13533 states and 20056 transitions. [2021-11-23 02:36:25,134 INFO L78 Accepts]: Start accepts. Automaton has 13533 states and 20056 transitions. Word has length 199 [2021-11-23 02:36:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:25,137 INFO L470 AbstractCegarLoop]: Abstraction has 13533 states and 20056 transitions. [2021-11-23 02:36:25,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-23 02:36:25,138 INFO L276 IsEmpty]: Start isEmpty. Operand 13533 states and 20056 transitions. [2021-11-23 02:36:25,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-23 02:36:25,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:25,144 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:25,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:36:25,145 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:25,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:25,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1909509006, now seen corresponding path program 1 times [2021-11-23 02:36:25,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:25,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035507119] [2021-11-23 02:36:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:25,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-11-23 02:36:25,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:25,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035507119] [2021-11-23 02:36:25,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035507119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:25,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:36:25,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:36:25,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390978256] [2021-11-23 02:36:25,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:25,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:36:25,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:25,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:36:25,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:36:25,730 INFO L87 Difference]: Start difference. First operand 13533 states and 20056 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:36:28,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:32,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:35,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:35,551 INFO L93 Difference]: Finished difference Result 20062 states and 29666 transitions. [2021-11-23 02:36:35,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:36:35,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 198 [2021-11-23 02:36:35,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:35,696 INFO L225 Difference]: With dead ends: 20062 [2021-11-23 02:36:35,697 INFO L226 Difference]: Without dead ends: 20059 [2021-11-23 02:36:35,713 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:36:35,715 INFO L933 BasicCegarLoop]: 3747 mSDtfsCounter, 2602 mSDsluCounter, 3432 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2605 SdHoareTripleChecker+Valid, 6900 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:35,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2605 Valid, 6900 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 562 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2021-11-23 02:36:35,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20059 states. [2021-11-23 02:36:37,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20059 to 20050. [2021-11-23 02:36:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20050 states, 12825 states have (on average 1.3566471734892787) internal successors, (17399), 13423 states have internal predecessors, (17399), 6097 states have call successors, (6097), 1140 states have call predecessors, (6097), 1127 states have return successors, (6159), 5830 states have call predecessors, (6159), 6085 states have call successors, (6159) [2021-11-23 02:36:37,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20050 states to 20050 states and 29655 transitions. [2021-11-23 02:36:37,179 INFO L78 Accepts]: Start accepts. Automaton has 20050 states and 29655 transitions. Word has length 198 [2021-11-23 02:36:37,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:37,180 INFO L470 AbstractCegarLoop]: Abstraction has 20050 states and 29655 transitions. [2021-11-23 02:36:37,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:36:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 20050 states and 29655 transitions. [2021-11-23 02:36:37,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-23 02:36:37,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:37,185 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:37,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:36:37,185 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:37,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:37,186 INFO L85 PathProgramCache]: Analyzing trace with hash -936116313, now seen corresponding path program 1 times [2021-11-23 02:36:37,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:37,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662887460] [2021-11-23 02:36:37,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:37,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-11-23 02:36:37,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:37,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662887460] [2021-11-23 02:36:37,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662887460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:37,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:36:37,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:36:37,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77951594] [2021-11-23 02:36:37,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:37,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:36:37,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:37,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:36:37,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:36:37,601 INFO L87 Difference]: Start difference. First operand 20050 states and 29655 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:36:40,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:44,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:46,880 INFO L93 Difference]: Finished difference Result 20063 states and 29667 transitions. [2021-11-23 02:36:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:36:46,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 199 [2021-11-23 02:36:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:47,002 INFO L225 Difference]: With dead ends: 20063 [2021-11-23 02:36:47,002 INFO L226 Difference]: Without dead ends: 20060 [2021-11-23 02:36:47,022 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:36:47,023 INFO L933 BasicCegarLoop]: 3747 mSDtfsCounter, 2599 mSDsluCounter, 3435 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2602 SdHoareTripleChecker+Valid, 6903 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:47,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2602 Valid, 6903 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 562 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2021-11-23 02:36:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20060 states. [2021-11-23 02:36:48,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20060 to 20051. [2021-11-23 02:36:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20051 states, 12826 states have (on average 1.356619366910962) internal successors, (17400), 13424 states have internal predecessors, (17400), 6097 states have call successors, (6097), 1140 states have call predecessors, (6097), 1127 states have return successors, (6159), 5830 states have call predecessors, (6159), 6085 states have call successors, (6159) [2021-11-23 02:36:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20051 states to 20051 states and 29656 transitions. [2021-11-23 02:36:48,701 INFO L78 Accepts]: Start accepts. Automaton has 20051 states and 29656 transitions. Word has length 199 [2021-11-23 02:36:48,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:48,702 INFO L470 AbstractCegarLoop]: Abstraction has 20051 states and 29656 transitions. [2021-11-23 02:36:48,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:36:48,702 INFO L276 IsEmpty]: Start isEmpty. Operand 20051 states and 29656 transitions. [2021-11-23 02:36:48,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-23 02:36:48,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:48,708 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:48,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:36:48,709 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:48,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:48,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1043816881, now seen corresponding path program 1 times [2021-11-23 02:36:48,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:48,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742213490] [2021-11-23 02:36:48,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:48,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-11-23 02:36:49,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:49,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742213490] [2021-11-23 02:36:49,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742213490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:49,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:36:49,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:36:49,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334809974] [2021-11-23 02:36:49,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:49,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:36:49,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:49,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:36:49,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:36:49,026 INFO L87 Difference]: Start difference. First operand 20051 states and 29656 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:36:51,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:53,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:57,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:00,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:03,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:03,889 INFO L93 Difference]: Finished difference Result 20064 states and 29668 transitions. [2021-11-23 02:37:03,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:37:03,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 200 [2021-11-23 02:37:03,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:04,056 INFO L225 Difference]: With dead ends: 20064 [2021-11-23 02:37:04,057 INFO L226 Difference]: Without dead ends: 20061 [2021-11-23 02:37:04,066 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:37:04,069 INFO L933 BasicCegarLoop]: 3747 mSDtfsCounter, 2596 mSDsluCounter, 3437 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2599 SdHoareTripleChecker+Valid, 6906 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:04,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2599 Valid, 6906 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 558 Invalid, 5 Unknown, 0 Unchecked, 14.3s Time] [2021-11-23 02:37:04,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20061 states. [2021-11-23 02:37:05,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20061 to 20052. [2021-11-23 02:37:05,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20052 states, 12827 states have (on average 1.3565915646682778) internal successors, (17401), 13425 states have internal predecessors, (17401), 6097 states have call successors, (6097), 1140 states have call predecessors, (6097), 1127 states have return successors, (6159), 5830 states have call predecessors, (6159), 6085 states have call successors, (6159) [2021-11-23 02:37:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20052 states to 20052 states and 29657 transitions. [2021-11-23 02:37:05,502 INFO L78 Accepts]: Start accepts. Automaton has 20052 states and 29657 transitions. Word has length 200 [2021-11-23 02:37:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:05,505 INFO L470 AbstractCegarLoop]: Abstraction has 20052 states and 29657 transitions. [2021-11-23 02:37:05,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:37:05,505 INFO L276 IsEmpty]: Start isEmpty. Operand 20052 states and 29657 transitions. [2021-11-23 02:37:05,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-23 02:37:05,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:05,510 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:37:05,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:37:05,510 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:05,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:05,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2002758678, now seen corresponding path program 1 times [2021-11-23 02:37:05,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:05,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740037484] [2021-11-23 02:37:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:05,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-11-23 02:37:06,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:06,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740037484] [2021-11-23 02:37:06,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740037484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:06,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:37:06,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:37:06,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442990751] [2021-11-23 02:37:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:06,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:37:06,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:37:06,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:37:06,025 INFO L87 Difference]: Start difference. First operand 20052 states and 29657 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:37:09,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:11,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:16,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:18,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:19,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:19,695 INFO L93 Difference]: Finished difference Result 32736 states and 48425 transitions. [2021-11-23 02:37:19,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:37:19,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 201 [2021-11-23 02:37:19,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:19,894 INFO L225 Difference]: With dead ends: 32736 [2021-11-23 02:37:19,894 INFO L226 Difference]: Without dead ends: 32733 [2021-11-23 02:37:19,916 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:37:19,917 INFO L933 BasicCegarLoop]: 3756 mSDtfsCounter, 2556 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 6918 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:19,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2559 Valid, 6918 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 563 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2021-11-23 02:37:19,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32733 states. [2021-11-23 02:37:21,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32733 to 32724. [2021-11-23 02:37:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32724 states, 20951 states have (on average 1.3584077132356451) internal successors, (28460), 21947 states have internal predecessors, (28460), 9909 states have call successors, (9909), 1888 states have call predecessors, (9909), 1863 states have return successors, (10045), 9460 states have call predecessors, (10045), 9897 states have call successors, (10045) [2021-11-23 02:37:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32724 states to 32724 states and 48414 transitions. [2021-11-23 02:37:22,083 INFO L78 Accepts]: Start accepts. Automaton has 32724 states and 48414 transitions. Word has length 201 [2021-11-23 02:37:22,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:22,084 INFO L470 AbstractCegarLoop]: Abstraction has 32724 states and 48414 transitions. [2021-11-23 02:37:22,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:37:22,084 INFO L276 IsEmpty]: Start isEmpty. Operand 32724 states and 48414 transitions. [2021-11-23 02:37:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-23 02:37:22,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:22,088 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:37:22,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:37:22,089 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:22,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:22,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1957315628, now seen corresponding path program 1 times [2021-11-23 02:37:22,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:22,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025293845] [2021-11-23 02:37:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:22,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-11-23 02:37:22,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:22,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025293845] [2021-11-23 02:37:22,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025293845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:22,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:37:22,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:37:22,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900110519] [2021-11-23 02:37:22,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:22,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:37:22,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:22,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:37:22,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:37:22,679 INFO L87 Difference]: Start difference. First operand 32724 states and 48414 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:37:25,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:30,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:33,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:34,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:34,983 INFO L93 Difference]: Finished difference Result 93975 states and 139026 transitions. [2021-11-23 02:37:34,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:37:34,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 202 [2021-11-23 02:37:34,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:35,417 INFO L225 Difference]: With dead ends: 93975 [2021-11-23 02:37:35,417 INFO L226 Difference]: Without dead ends: 61286 [2021-11-23 02:37:35,804 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:37:35,805 INFO L933 BasicCegarLoop]: 3838 mSDtfsCounter, 2403 mSDsluCounter, 3315 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 6888 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:35,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2406 Valid, 6888 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 592 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2021-11-23 02:37:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61286 states. [2021-11-23 02:37:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61286 to 61171. [2021-11-23 02:37:38,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61171 states, 39392 states have (on average 1.3546151502843218) internal successors, (53361), 41000 states have internal predecessors, (53361), 18213 states have call successors, (18213), 3635 states have call predecessors, (18213), 3565 states have return successors, (18793), 17547 states have call predecessors, (18793), 18199 states have call successors, (18793) [2021-11-23 02:37:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61171 states to 61171 states and 90367 transitions. [2021-11-23 02:37:39,383 INFO L78 Accepts]: Start accepts. Automaton has 61171 states and 90367 transitions. Word has length 202 [2021-11-23 02:37:39,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:39,384 INFO L470 AbstractCegarLoop]: Abstraction has 61171 states and 90367 transitions. [2021-11-23 02:37:39,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:37:39,385 INFO L276 IsEmpty]: Start isEmpty. Operand 61171 states and 90367 transitions. [2021-11-23 02:37:39,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-23 02:37:39,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:39,389 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:37:39,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:37:39,389 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:39,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:39,390 INFO L85 PathProgramCache]: Analyzing trace with hash -548576211, now seen corresponding path program 1 times [2021-11-23 02:37:39,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:39,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151171816] [2021-11-23 02:37:39,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:39,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-11-23 02:37:39,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:39,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151171816] [2021-11-23 02:37:39,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151171816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:39,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:37:39,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:37:39,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583769825] [2021-11-23 02:37:39,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:39,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:37:39,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:39,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:37:39,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:37:39,712 INFO L87 Difference]: Start difference. First operand 61171 states and 90367 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:37:41,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:44,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:48,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:53,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:56,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:57,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:57,136 INFO L93 Difference]: Finished difference Result 61197 states and 90394 transitions. [2021-11-23 02:37:57,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:37:57,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 203 [2021-11-23 02:37:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:57,426 INFO L225 Difference]: With dead ends: 61197 [2021-11-23 02:37:57,427 INFO L226 Difference]: Without dead ends: 61186 [2021-11-23 02:37:57,457 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:37:57,461 INFO L933 BasicCegarLoop]: 3748 mSDtfsCounter, 2591 mSDsluCounter, 3446 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2594 SdHoareTripleChecker+Valid, 6916 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:57,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2594 Valid, 6916 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 558 Invalid, 4 Unknown, 0 Unchecked, 15.6s Time] [2021-11-23 02:37:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61186 states. [2021-11-23 02:38:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61186 to 61168. [2021-11-23 02:38:00,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61168 states, 39389 states have (on average 1.354515219985275) internal successors, (53353), 40997 states have internal predecessors, (53353), 18213 states have call successors, (18213), 3635 states have call predecessors, (18213), 3565 states have return successors, (18793), 17547 states have call predecessors, (18793), 18199 states have call successors, (18793) [2021-11-23 02:38:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61168 states to 61168 states and 90359 transitions. [2021-11-23 02:38:00,739 INFO L78 Accepts]: Start accepts. Automaton has 61168 states and 90359 transitions. Word has length 203 [2021-11-23 02:38:00,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:38:00,740 INFO L470 AbstractCegarLoop]: Abstraction has 61168 states and 90359 transitions. [2021-11-23 02:38:00,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:38:00,740 INFO L276 IsEmpty]: Start isEmpty. Operand 61168 states and 90359 transitions. [2021-11-23 02:38:00,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-23 02:38:00,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:00,744 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:38:00,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:38:00,745 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:38:00,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:00,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1977133699, now seen corresponding path program 1 times [2021-11-23 02:38:00,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:38:00,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699968710] [2021-11-23 02:38:00,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:00,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:38:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2021-11-23 02:38:01,376 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:38:01,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699968710] [2021-11-23 02:38:01,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699968710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:38:01,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:38:01,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:38:01,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015003823] [2021-11-23 02:38:01,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:38:01,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:38:01,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:38:01,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:38:01,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:38:01,380 INFO L87 Difference]: Start difference. First operand 61168 states and 90359 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:38:02,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:05,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:12,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:38:16,494 INFO L93 Difference]: Finished difference Result 182017 states and 268754 transitions. [2021-11-23 02:38:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:38:16,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 234 [2021-11-23 02:38:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:38:17,328 INFO L225 Difference]: With dead ends: 182017 [2021-11-23 02:38:17,329 INFO L226 Difference]: Without dead ends: 120884 [2021-11-23 02:38:18,078 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:38:18,078 INFO L933 BasicCegarLoop]: 3933 mSDtfsCounter, 2588 mSDsluCounter, 3441 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2591 SdHoareTripleChecker+Valid, 7097 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:38:18,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2591 Valid, 7097 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 607 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2021-11-23 02:38:18,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120884 states. [2021-11-23 02:38:24,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120884 to 120800. [2021-11-23 02:38:24,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120800 states, 77815 states have (on average 1.3555355651224057) internal successors, (105481), 81029 states have internal predecessors, (105481), 35857 states have call successors, (35857), 7245 states have call predecessors, (35857), 7127 states have return successors, (36971), 34547 states have call predecessors, (36971), 35843 states have call successors, (36971) [2021-11-23 02:38:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120800 states to 120800 states and 178309 transitions. [2021-11-23 02:38:25,809 INFO L78 Accepts]: Start accepts. Automaton has 120800 states and 178309 transitions. Word has length 234 [2021-11-23 02:38:25,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:38:25,810 INFO L470 AbstractCegarLoop]: Abstraction has 120800 states and 178309 transitions. [2021-11-23 02:38:25,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:38:25,810 INFO L276 IsEmpty]: Start isEmpty. Operand 120800 states and 178309 transitions. [2021-11-23 02:38:25,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-23 02:38:25,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:25,819 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:38:25,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:38:25,819 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:38:25,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:25,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1617767571, now seen corresponding path program 1 times [2021-11-23 02:38:25,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:38:25,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871761446] [2021-11-23 02:38:25,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:25,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:38:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2021-11-23 02:38:26,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:38:26,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871761446] [2021-11-23 02:38:26,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871761446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:38:26,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:38:26,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:38:26,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149715619] [2021-11-23 02:38:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:38:26,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:38:26,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:38:26,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:38:26,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:38:26,101 INFO L87 Difference]: Start difference. First operand 120800 states and 178309 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 02:38:29,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:36,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:45,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:38:45,640 INFO L93 Difference]: Finished difference Result 358539 states and 529092 transitions. [2021-11-23 02:38:45,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:38:45,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 281 [2021-11-23 02:38:45,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:38:46,849 INFO L225 Difference]: With dead ends: 358539 [2021-11-23 02:38:46,849 INFO L226 Difference]: Without dead ends: 237774 [2021-11-23 02:38:47,727 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:38:47,728 INFO L933 BasicCegarLoop]: 3938 mSDtfsCounter, 2556 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 7102 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:38:47,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2559 Valid, 7102 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 608 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2021-11-23 02:38:47,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237774 states.