./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P --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 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:57:46,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:57:46,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:57:46,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:57:46,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:57:46,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:57:46,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:57:46,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:57:46,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:57:46,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:57:46,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:57:46,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:57:46,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:57:46,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:57:46,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:57:46,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:57:46,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:57:46,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:57:46,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:57:46,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:57:46,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:57:46,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:57:46,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:57:46,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:57:46,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:57:46,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:57:46,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:57:46,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:57:46,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:57:46,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:57:46,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:57:46,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:57:46,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:57:46,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:57:46,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:57:46,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:57:46,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:57:46,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:57:46,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:57:46,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:57:46,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:57:46,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:57:46,253 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:57:46,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:57:46,257 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:57:46,257 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:57:46,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:57:46,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:57:46,264 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:57:46,265 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:57:46,265 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:57:46,265 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:57:46,266 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:57:46,266 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:57:46,267 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:57:46,267 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:57:46,267 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:57:46,267 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:57:46,268 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:57:46,268 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:57:46,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:57:46,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:57:46,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:57:46,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:57:46,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:57:46,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:57:46,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:57:46,271 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:57:46,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:57:46,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:57:46,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:57:46,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:57:46,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:57:46,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:57:46,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:57:46,274 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:57:46,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:57:46,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:57:46,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:57:46,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:57:46,282 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_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd [2021-11-21 01:57:46,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:57:46,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:57:46,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:57:46,557 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:57:46,558 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:57:46,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-21 01:57:46,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/data/8178e68a9/ad5abfee6b3d4a3ea8e9ec1bb2e9dec8/FLAGdbede2c4b [2021-11-21 01:57:47,516 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:57:47,517 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-21 01:57:47,561 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/data/8178e68a9/ad5abfee6b3d4a3ea8e9ec1bb2e9dec8/FLAGdbede2c4b [2021-11-21 01:57:47,956 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/data/8178e68a9/ad5abfee6b3d4a3ea8e9ec1bb2e9dec8 [2021-11-21 01:57:47,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:57:47,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:57:47,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:57:47,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:57:47,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:57:47,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:57:47" (1/1) ... [2021-11-21 01:57:47,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345f8979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:47, skipping insertion in model container [2021-11-21 01:57:47,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:57:47" (1/1) ... [2021-11-21 01:57:47,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:57:48,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:57:50,785 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_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-21 01:57:50,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:57:50,894 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:57:51,332 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_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-21 01:57:51,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:57:51,679 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:57:51,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51 WrapperNode [2021-11-21 01:57:51,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:57:51,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:57:51,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:57:51,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:57:51,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:51,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,048 INFO L137 Inliner]: procedures = 382, calls = 2296, calls flagged for inlining = 189, calls inlined = 143, statements flattened = 4616 [2021-11-21 01:57:52,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:57:52,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:57:52,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:57:52,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:57:52,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:57:52,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:57:52,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:57:52,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:57:52,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (1/1) ... [2021-11-21 01:57:52,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:57:52,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:57:52,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:57:52,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:57:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-21 01:57:52,437 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-21 01:57:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 01:57:52,437 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 01:57:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-21 01:57:52,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-21 01:57:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-21 01:57:52,438 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-21 01:57:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure jme_fill_tx_map [2021-11-21 01:57:52,438 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_fill_tx_map [2021-11-21 01:57:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_tx_resources [2021-11-21 01:57:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_tx_resources [2021-11-21 01:57:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 01:57:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 01:57:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-21 01:57:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-21 01:57:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure jme_polling_mode [2021-11-21 01:57:52,440 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_polling_mode [2021-11-21 01:57:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:57:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable_pending [2021-11-21 01:57:52,440 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable_pending [2021-11-21 01:57:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:57:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:57:52,441 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:57:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:57:52,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:57:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_mac_processor [2021-11-21 01:57:52,441 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_mac_processor [2021-11-21 01:57:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:57:52,442 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:57:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure jme_ioctl [2021-11-21 01:57:52,442 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_ioctl [2021-11-21 01:57:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32 [2021-11-21 01:57:52,443 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32 [2021-11-21 01:57:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure jme_powersave_phy [2021-11-21 01:57:52,443 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_powersave_phy [2021-11-21 01:57:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_on [2021-11-21 01:57:52,443 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_on [2021-11-21 01:57:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure new_phy_power_ctrl [2021-11-21 01:57:52,444 INFO L138 BoogieDeclarations]: Found implementation of procedure new_phy_power_ctrl [2021-11-21 01:57:52,444 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_regs_len [2021-11-21 01:57:52,444 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_regs_len [2021-11-21 01:57:52,444 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:57:52,444 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:57:52,445 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:57:52,445 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:57:52,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:57:52,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:57:52,445 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_on [2021-11-21 01:57:52,445 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_on [2021-11-21 01:57:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_rx_engine [2021-11-21 01:57:52,446 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_rx_engine [2021-11-21 01:57:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable_nosync [2021-11-21 01:57:52,446 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable_nosync [2021-11-21 01:57:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-21 01:57:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-21 01:57:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32f [2021-11-21 01:57:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32f [2021-11-21 01:57:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure smi_reg_addr [2021-11-21 01:57:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_reg_addr [2021-11-21 01:57:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_settings [2021-11-21 01:57:52,448 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_settings [2021-11-21 01:57:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 01:57:52,448 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 01:57:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-21 01:57:52,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-21 01:57:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:57:52,449 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:57:52,449 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:57:52,449 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:57:52,449 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_link [2021-11-21 01:57:52,449 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_link [2021-11-21 01:57:52,449 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 01:57:52,450 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 01:57:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:57:52,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:57:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:57:52,450 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:57:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:57:52,451 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:57:52,451 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:57:52,451 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:57:52,451 INFO L130 BoogieDeclarations]: Found specification of procedure jme_nway_reset [2021-11-21 01:57:52,452 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_nway_reset [2021-11-21 01:57:52,452 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:57:52,452 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:57:52,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:57:52,452 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 01:57:52,452 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 01:57:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:57:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:57:52,453 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:57:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_rx_resources [2021-11-21 01:57:52,453 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_rx_resources [2021-11-21 01:57:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unmap_page_2 [2021-11-21 01:57:52,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unmap_page_2 [2021-11-21 01:57:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 01:57:52,454 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 01:57:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure jme_resume [2021-11-21 01:57:52,454 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_resume [2021-11-21 01:57:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:57:52,455 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:57:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure jme_tx_timeout [2021-11-21 01:57:52,455 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_tx_timeout [2021-11-21 01:57:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:57:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 01:57:52,456 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 01:57:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:57:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_tx_engine [2021-11-21 01:57:52,456 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_tx_engine [2021-11-21 01:57:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure jread32 [2021-11-21 01:57:52,456 INFO L138 BoogieDeclarations]: Found implementation of procedure jread32 [2021-11-21 01:57:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-21 01:57:52,457 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-21 01:57:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:57:52,457 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:57:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:57:52,458 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:57:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_rx_pcc [2021-11-21 01:57:52,458 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_rx_pcc [2021-11-21 01:57:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-21 01:57:52,458 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-21 01:57:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_off [2021-11-21 01:57:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_off [2021-11-21 01:57:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-21 01:57:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-21 01:57:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:57:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_unicastaddr [2021-11-21 01:57:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_unicastaddr [2021-11-21 01:57:52,460 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_macaddr [2021-11-21 01:57:52,460 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_macaddr [2021-11-21 01:57:52,460 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:57:52,460 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:57:52,460 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-21 01:57:52,460 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-21 01:57:52,461 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:57:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:57:52,461 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_multi [2021-11-21 01:57:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_multi [2021-11-21 01:57:52,461 INFO L130 BoogieDeclarations]: Found specification of procedure jme_vlan_rx_register [2021-11-21 01:57:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_vlan_rx_register [2021-11-21 01:57:52,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:57:52,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:57:52,462 INFO L130 BoogieDeclarations]: Found specification of procedure mmapio_memcpy [2021-11-21 01:57:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure mmapio_memcpy [2021-11-21 01:57:52,462 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:57:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:57:52,462 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:57:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:57:52,463 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:57:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:57:52,463 INFO L130 BoogieDeclarations]: Found specification of procedure jme_restart_rx_engine [2021-11-21 01:57:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_restart_rx_engine [2021-11-21 01:57:52,463 INFO L130 BoogieDeclarations]: Found specification of procedure jme_clear_pm [2021-11-21 01:57:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_clear_pm [2021-11-21 01:57:52,463 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2021-11-21 01:57:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2021-11-21 01:57:52,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:57:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:57:52,464 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-21 01:57:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-21 01:57:52,464 INFO L130 BoogieDeclarations]: Found specification of procedure jme_close [2021-11-21 01:57:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_close [2021-11-21 01:57:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:57:52,465 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:57:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-21 01:57:52,465 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-21 01:57:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-21 01:57:52,465 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-21 01:57:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_irq [2021-11-21 01:57:52,466 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_irq [2021-11-21 01:57:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_features [2021-11-21 01:57:52,466 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_features [2021-11-21 01:57:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:57:52,466 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:57:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:57:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:57:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:57:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure jme_linkstat_from_phy [2021-11-21 01:57:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_linkstat_from_phy [2021-11-21 01:57:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2021-11-21 01:57:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2021-11-21 01:57:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_off [2021-11-21 01:57:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_off [2021-11-21 01:57:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_write [2021-11-21 01:57:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_write [2021-11-21 01:57:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_on [2021-11-21 01:57:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_on [2021-11-21 01:57:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_phy_processor [2021-11-21 01:57:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_phy_processor [2021-11-21 01:57:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure jme_suspend [2021-11-21 01:57:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_suspend [2021-11-21 01:57:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-21 01:57:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-21 01:57:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:57:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:57:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-21 01:57:52,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-21 01:57:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:57:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:57:52,470 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:57:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_off [2021-11-21 01:57:52,470 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_off [2021-11-21 01:57:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-21 01:57:52,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-21 01:57:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_coherent [2021-11-21 01:57:52,471 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_coherent [2021-11-21 01:57:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_phyfifo_5level [2021-11-21 01:57:52,472 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_phyfifo_5level [2021-11-21 01:57:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure smi_phy_addr [2021-11-21 01:57:52,472 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_phy_addr [2021-11-21 01:57:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:57:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-21 01:57:52,472 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-21 01:57:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:57:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:57:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:57:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-21 01:57:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-21 01:57:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-21 01:57:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-21 01:57:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_eeprom_len [2021-11-21 01:57:52,474 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_eeprom_len [2021-11-21 01:57:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2021-11-21 01:57:52,474 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2021-11-21 01:57:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:57:52,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:57:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_pcc_timer [2021-11-21 01:57:52,475 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_pcc_timer [2021-11-21 01:57:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure jme_interrupt_mode [2021-11-21 01:57:52,475 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_interrupt_mode [2021-11-21 01:57:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure jme_fix_features [2021-11-21 01:57:52,475 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_fix_features [2021-11-21 01:57:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure reg_dbg [2021-11-21 01:57:52,475 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_dbg [2021-11-21 01:57:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-21 01:57:52,476 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-21 01:57:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:57:52,476 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:57:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_settings [2021-11-21 01:57:52,476 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_settings [2021-11-21 01:57:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_read [2021-11-21 01:57:52,477 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_read [2021-11-21 01:57:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-21 01:57:52,477 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-21 01:57:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 01:57:52,477 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 01:57:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_map_page_1 [2021-11-21 01:57:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_map_page_1 [2021-11-21 01:57:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 01:57:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 01:57:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:57:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:57:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:57:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure jme_open [2021-11-21 01:57:52,479 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_open [2021-11-21 01:57:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure jme_start_irq [2021-11-21 01:57:52,479 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_start_irq [2021-11-21 01:57:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-21 01:57:52,479 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-21 01:57:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:57:52,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:57:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure jme_change_mtu [2021-11-21 01:57:52,480 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_change_mtu [2021-11-21 01:57:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2021-11-21 01:57:52,480 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2021-11-21 01:57:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-21 01:57:52,480 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-21 01:57:53,260 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:57:53,266 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:57:53,699 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:57:58,331 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:57:59,438 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:57:59,438 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 01:57:59,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:57:59 BoogieIcfgContainer [2021-11-21 01:57:59,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:57:59,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:57:59,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:57:59,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:57:59,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:57:47" (1/3) ... [2021-11-21 01:57:59,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f766533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:57:59, skipping insertion in model container [2021-11-21 01:57:59,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:57:51" (2/3) ... [2021-11-21 01:57:59,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f766533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:57:59, skipping insertion in model container [2021-11-21 01:57:59,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:57:59" (3/3) ... [2021-11-21 01:57:59,452 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-21 01:57:59,458 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:57:59,458 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:57:59,516 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:57:59,523 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 [2021-11-21 01:57:59,523 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:57:59,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 1570 states, 901 states have (on average 1.3196448390677025) internal successors, (1189), 948 states have internal predecessors, (1189), 546 states have call successors, (546), 126 states have call predecessors, (546), 125 states have return successors, (540), 530 states have call predecessors, (540), 540 states have call successors, (540) [2021-11-21 01:57:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-21 01:57:59,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:59,598 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:59,599 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:57:59,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:59,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1788518744, now seen corresponding path program 1 times [2021-11-21 01:57:59,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:59,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049075014] [2021-11-21 01:57:59,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:59,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-11-21 01:58:00,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:00,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049075014] [2021-11-21 01:58:00,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049075014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:00,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:00,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:58:00,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107320105] [2021-11-21 01:58:00,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:00,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:58:00,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:00,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:58:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:58:00,316 INFO L87 Difference]: Start difference. First operand has 1570 states, 901 states have (on average 1.3196448390677025) internal successors, (1189), 948 states have internal predecessors, (1189), 546 states have call successors, (546), 126 states have call predecessors, (546), 125 states have return successors, (540), 530 states have call predecessors, (540), 540 states have call successors, (540) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-21 01:58:03,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:58:05,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:05,643 INFO L93 Difference]: Finished difference Result 4477 states and 6499 transitions. [2021-11-21 01:58:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:58:05,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 177 [2021-11-21 01:58:05,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:05,775 INFO L225 Difference]: With dead ends: 4477 [2021-11-21 01:58:05,775 INFO L226 Difference]: Without dead ends: 2920 [2021-11-21 01:58:05,796 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 [2021-11-21 01:58:05,803 INFO L933 BasicCegarLoop]: 2600 mSDtfsCounter, 1978 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 4616 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:05,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1978 Valid, 4616 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 468 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-21 01:58:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2021-11-21 01:58:06,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2916. [2021-11-21 01:58:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 1679 states have (on average 1.3114949374627756) internal successors, (2202), 1747 states have internal predecessors, (2202), 993 states have call successors, (993), 244 states have call predecessors, (993), 243 states have return successors, (990), 970 states have call predecessors, (990), 990 states have call successors, (990) [2021-11-21 01:58:06,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4185 transitions. [2021-11-21 01:58:06,159 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4185 transitions. Word has length 177 [2021-11-21 01:58:06,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:06,162 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4185 transitions. [2021-11-21 01:58:06,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-21 01:58:06,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4185 transitions. [2021-11-21 01:58:06,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-21 01:58:06,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:06,188 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:06,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:58:06,189 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:58:06,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1331421371, now seen corresponding path program 1 times [2021-11-21 01:58:06,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:06,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227467846] [2021-11-21 01:58:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:06,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2021-11-21 01:58:06,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:06,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227467846] [2021-11-21 01:58:06,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227467846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:06,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:06,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:58:06,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826022045] [2021-11-21 01:58:06,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:06,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:58:06,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:06,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:58:06,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:58:06,724 INFO L87 Difference]: Start difference. First operand 2916 states and 4185 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:58:09,901 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:58:11,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:11,537 INFO L93 Difference]: Finished difference Result 5729 states and 8213 transitions. [2021-11-21 01:58:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:58:11,538 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), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 192 [2021-11-21 01:58:11,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:11,603 INFO L225 Difference]: With dead ends: 5729 [2021-11-21 01:58:11,603 INFO L226 Difference]: Without dead ends: 5726 [2021-11-21 01:58:11,616 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 [2021-11-21 01:58:11,618 INFO L933 BasicCegarLoop]: 2606 mSDtfsCounter, 2091 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:11,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2091 Valid, 4561 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 453 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-21 01:58:11,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5726 states. [2021-11-21 01:58:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5726 to 5722. [2021-11-21 01:58:12,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5722 states, 3296 states have (on average 1.3131067961165048) internal successors, (4328), 3430 states have internal predecessors, (4328), 1941 states have call successors, (1941), 485 states have call predecessors, (1941), 484 states have return successors, (1938), 1897 states have call predecessors, (1938), 1938 states have call successors, (1938) [2021-11-21 01:58:12,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 8207 transitions. [2021-11-21 01:58:12,157 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 8207 transitions. Word has length 192 [2021-11-21 01:58:12,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:12,165 INFO L470 AbstractCegarLoop]: Abstraction has 5722 states and 8207 transitions. [2021-11-21 01:58:12,166 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), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:58:12,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 8207 transitions. [2021-11-21 01:58:12,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-21 01:58:12,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:12,173 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:12,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:58:12,174 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:58:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:12,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1676467473, now seen corresponding path program 1 times [2021-11-21 01:58:12,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:12,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656474658] [2021-11-21 01:58:12,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:12,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2021-11-21 01:58:12,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:12,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656474658] [2021-11-21 01:58:12,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656474658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:12,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:12,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:58:12,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239059351] [2021-11-21 01:58:12,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:12,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:58:12,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:12,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:58:12,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:58:12,468 INFO L87 Difference]: Start difference. First operand 5722 states and 8207 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:58:15,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:58:17,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:17,394 INFO L93 Difference]: Finished difference Result 14044 states and 20168 transitions. [2021-11-21 01:58:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:58:17,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 193 [2021-11-21 01:58:17,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:17,491 INFO L225 Difference]: With dead ends: 14044 [2021-11-21 01:58:17,491 INFO L226 Difference]: Without dead ends: 8354 [2021-11-21 01:58:17,537 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 [2021-11-21 01:58:17,542 INFO L933 BasicCegarLoop]: 2571 mSDtfsCounter, 1929 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 4529 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:17,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 4529 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 459 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-21 01:58:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8354 states. [2021-11-21 01:58:18,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8354 to 8346. [2021-11-21 01:58:18,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8346 states, 4815 states have (on average 1.3163032191069575) internal successors, (6338), 5015 states have internal predecessors, (6338), 2824 states have call successors, (2824), 712 states have call predecessors, (2824), 706 states have return successors, (2820), 2751 states have call predecessors, (2820), 2820 states have call successors, (2820) [2021-11-21 01:58:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8346 states to 8346 states and 11982 transitions. [2021-11-21 01:58:18,232 INFO L78 Accepts]: Start accepts. Automaton has 8346 states and 11982 transitions. Word has length 193 [2021-11-21 01:58:18,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:18,234 INFO L470 AbstractCegarLoop]: Abstraction has 8346 states and 11982 transitions. [2021-11-21 01:58:18,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:58:18,236 INFO L276 IsEmpty]: Start isEmpty. Operand 8346 states and 11982 transitions. [2021-11-21 01:58:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-21 01:58:18,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:18,248 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:18,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:58:18,249 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:58:18,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:18,250 INFO L85 PathProgramCache]: Analyzing trace with hash 705429827, now seen corresponding path program 1 times [2021-11-21 01:58:18,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:18,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812047524] [2021-11-21 01:58:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:18,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2021-11-21 01:58:18,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:18,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812047524] [2021-11-21 01:58:18,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812047524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:18,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:18,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:58:18,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553500219] [2021-11-21 01:58:18,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:18,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:58:18,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:18,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:58:18,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:58:18,557 INFO L87 Difference]: Start difference. First operand 8346 states and 11982 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 01:58:22,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:22,288 INFO L93 Difference]: Finished difference Result 24250 states and 34809 transitions. [2021-11-21 01:58:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:58:22,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 235 [2021-11-21 01:58:22,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:22,463 INFO L225 Difference]: With dead ends: 24250 [2021-11-21 01:58:22,463 INFO L226 Difference]: Without dead ends: 15939 [2021-11-21 01:58:22,524 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 [2021-11-21 01:58:22,529 INFO L933 BasicCegarLoop]: 2657 mSDtfsCounter, 1901 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:22,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1901 Valid, 4608 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-21 01:58:22,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15939 states. [2021-11-21 01:58:23,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15939 to 15923. [2021-11-21 01:58:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15923 states, 9180 states have (on average 1.3157952069716776) internal successors, (12079), 9556 states have internal predecessors, (12079), 5390 states have call successors, (5390), 1362 states have call predecessors, (5390), 1352 states have return successors, (5386), 5255 states have call predecessors, (5386), 5386 states have call successors, (5386) [2021-11-21 01:58:23,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15923 states to 15923 states and 22855 transitions. [2021-11-21 01:58:23,599 INFO L78 Accepts]: Start accepts. Automaton has 15923 states and 22855 transitions. Word has length 235 [2021-11-21 01:58:23,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:23,604 INFO L470 AbstractCegarLoop]: Abstraction has 15923 states and 22855 transitions. [2021-11-21 01:58:23,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 01:58:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 15923 states and 22855 transitions. [2021-11-21 01:58:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-21 01:58:23,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:23,624 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:23,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:58:23,625 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:58:23,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:23,625 INFO L85 PathProgramCache]: Analyzing trace with hash -830506964, now seen corresponding path program 1 times [2021-11-21 01:58:23,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:23,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312744746] [2021-11-21 01:58:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:23,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2021-11-21 01:58:24,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:24,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312744746] [2021-11-21 01:58:24,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312744746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:24,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:24,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:58:24,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908637484] [2021-11-21 01:58:24,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:24,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:58:24,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:24,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:58:24,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:58:24,044 INFO L87 Difference]: Start difference. First operand 15923 states and 22855 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 01:58:27,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:27,671 INFO L93 Difference]: Finished difference Result 26519 states and 38065 transitions. [2021-11-21 01:58:27,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:58:27,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 257 [2021-11-21 01:58:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:27,745 INFO L225 Difference]: With dead ends: 26519 [2021-11-21 01:58:27,746 INFO L226 Difference]: Without dead ends: 10638 [2021-11-21 01:58:27,830 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 [2021-11-21 01:58:27,831 INFO L933 BasicCegarLoop]: 2007 mSDtfsCounter, 8 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4009 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:27,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 4009 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-21 01:58:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10638 states. [2021-11-21 01:58:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10638 to 10629. [2021-11-21 01:58:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10629 states, 6115 states have (on average 1.3143090760425185) internal successors, (8037), 6365 states have internal predecessors, (8037), 3611 states have call successors, (3611), 910 states have call predecessors, (3611), 902 states have return successors, (3607), 3519 states have call predecessors, (3607), 3607 states have call successors, (3607) [2021-11-21 01:58:28,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10629 states to 10629 states and 15255 transitions. [2021-11-21 01:58:28,605 INFO L78 Accepts]: Start accepts. Automaton has 10629 states and 15255 transitions. Word has length 257 [2021-11-21 01:58:28,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:28,606 INFO L470 AbstractCegarLoop]: Abstraction has 10629 states and 15255 transitions. [2021-11-21 01:58:28,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 01:58:28,607 INFO L276 IsEmpty]: Start isEmpty. Operand 10629 states and 15255 transitions. [2021-11-21 01:58:28,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-11-21 01:58:28,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:28,638 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:28,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:58:28,638 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:58:28,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:28,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1040675699, now seen corresponding path program 1 times [2021-11-21 01:58:28,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:28,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529705646] [2021-11-21 01:58:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:28,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2021-11-21 01:58:28,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:28,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529705646] [2021-11-21 01:58:28,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529705646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:28,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:28,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:58:28,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438383104] [2021-11-21 01:58:28,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:28,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:58:28,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:28,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:58:28,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:58:28,976 INFO L87 Difference]: Start difference. First operand 10629 states and 15255 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-21 01:58:35,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:58:37,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:37,951 INFO L93 Difference]: Finished difference Result 27009 states and 40562 transitions. [2021-11-21 01:58:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:58:37,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 341 [2021-11-21 01:58:37,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:38,073 INFO L225 Difference]: With dead ends: 27009 [2021-11-21 01:58:38,074 INFO L226 Difference]: Without dead ends: 18924 [2021-11-21 01:58:38,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:58:38,124 INFO L933 BasicCegarLoop]: 3800 mSDtfsCounter, 1406 mSDsluCounter, 6480 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 307 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 9706 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:38,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1711 Valid, 9706 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 970 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-11-21 01:58:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18924 states. [2021-11-21 01:58:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18924 to 10635. [2021-11-21 01:58:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10635 states, 6121 states have (on average 1.3140009802319883) internal successors, (8043), 6371 states have internal predecessors, (8043), 3611 states have call successors, (3611), 910 states have call predecessors, (3611), 902 states have return successors, (3607), 3519 states have call predecessors, (3607), 3607 states have call successors, (3607) [2021-11-21 01:58:39,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10635 states to 10635 states and 15261 transitions. [2021-11-21 01:58:39,266 INFO L78 Accepts]: Start accepts. Automaton has 10635 states and 15261 transitions. Word has length 341 [2021-11-21 01:58:39,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:39,268 INFO L470 AbstractCegarLoop]: Abstraction has 10635 states and 15261 transitions. [2021-11-21 01:58:39,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-21 01:58:39,269 INFO L276 IsEmpty]: Start isEmpty. Operand 10635 states and 15261 transitions. [2021-11-21 01:58:39,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-11-21 01:58:39,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:39,302 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:39,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:58:39,303 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:58:39,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:39,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1048325891, now seen corresponding path program 1 times [2021-11-21 01:58:39,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:39,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236841609] [2021-11-21 01:58:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:39,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1618 trivial. 0 not checked. [2021-11-21 01:58:39,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:39,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236841609] [2021-11-21 01:58:39,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236841609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:39,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:39,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:58:39,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715559390] [2021-11-21 01:58:39,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:39,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:58:39,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:39,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:58:39,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:58:39,877 INFO L87 Difference]: Start difference. First operand 10635 states and 15261 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-21 01:58:43,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:43,339 INFO L93 Difference]: Finished difference Result 21456 states and 30850 transitions. [2021-11-21 01:58:43,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:58:43,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 343 [2021-11-21 01:58:43,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:43,458 INFO L225 Difference]: With dead ends: 21456 [2021-11-21 01:58:43,458 INFO L226 Difference]: Without dead ends: 15911 [2021-11-21 01:58:43,618 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 [2021-11-21 01:58:43,619 INFO L933 BasicCegarLoop]: 2509 mSDtfsCounter, 2061 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 4467 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:43,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2061 Valid, 4467 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-21 01:58:43,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15911 states. [2021-11-21 01:58:44,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15911 to 15891. [2021-11-21 01:58:44,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15891 states, 9138 states have (on average 1.3161523309258043) internal successors, (12027), 9518 states have internal predecessors, (12027), 5411 states have call successors, (5411), 1357 states have call predecessors, (5411), 1341 states have return successors, (5407), 5264 states have call predecessors, (5407), 5407 states have call successors, (5407) [2021-11-21 01:58:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15891 states to 15891 states and 22845 transitions. [2021-11-21 01:58:44,697 INFO L78 Accepts]: Start accepts. Automaton has 15891 states and 22845 transitions. Word has length 343 [2021-11-21 01:58:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:44,698 INFO L470 AbstractCegarLoop]: Abstraction has 15891 states and 22845 transitions. [2021-11-21 01:58:44,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-21 01:58:44,698 INFO L276 IsEmpty]: Start isEmpty. Operand 15891 states and 22845 transitions. [2021-11-21 01:58:44,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-11-21 01:58:44,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:44,743 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:44,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:58:44,744 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:58:44,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:44,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1989384342, now seen corresponding path program 1 times [2021-11-21 01:58:44,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:44,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632218728] [2021-11-21 01:58:44,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:44,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2021-11-21 01:58:44,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:44,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632218728] [2021-11-21 01:58:44,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632218728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:44,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:44,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:58:44,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403198614] [2021-11-21 01:58:44,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:44,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:58:44,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:44,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:58:44,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:58:44,998 INFO L87 Difference]: Start difference. First operand 15891 states and 22845 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-21 01:58:49,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:58:51,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:58:51,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:51,240 INFO L93 Difference]: Finished difference Result 29173 states and 41821 transitions. [2021-11-21 01:58:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:58:51,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 345 [2021-11-21 01:58:51,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:51,322 INFO L225 Difference]: With dead ends: 29173 [2021-11-21 01:58:51,323 INFO L226 Difference]: Without dead ends: 13325 [2021-11-21 01:58:51,538 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 [2021-11-21 01:58:51,539 INFO L933 BasicCegarLoop]: 2351 mSDtfsCounter, 1502 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:51,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 4209 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-21 01:58:51,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13325 states. [2021-11-21 01:58:52,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13325 to 13304. [2021-11-21 01:58:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13304 states, 7654 states have (on average 1.3159132479749152) internal successors, (10072), 7970 states have internal predecessors, (10072), 4468 states have call successors, (4468), 1187 states have call predecessors, (4468), 1181 states have return successors, (4464), 4362 states have call predecessors, (4464), 4464 states have call successors, (4464) [2021-11-21 01:58:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13304 states to 13304 states and 19004 transitions. [2021-11-21 01:58:52,292 INFO L78 Accepts]: Start accepts. Automaton has 13304 states and 19004 transitions. Word has length 345 [2021-11-21 01:58:52,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:52,293 INFO L470 AbstractCegarLoop]: Abstraction has 13304 states and 19004 transitions. [2021-11-21 01:58:52,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-21 01:58:52,293 INFO L276 IsEmpty]: Start isEmpty. Operand 13304 states and 19004 transitions. [2021-11-21 01:58:52,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2021-11-21 01:58:52,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:52,327 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:52,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:58:52,328 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:58:52,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1699981077, now seen corresponding path program 1 times [2021-11-21 01:58:52,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:52,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990144587] [2021-11-21 01:58:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:52,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1689 trivial. 0 not checked. [2021-11-21 01:58:52,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:52,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990144587] [2021-11-21 01:58:52,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990144587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:52,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:52,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:58:52,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820687716] [2021-11-21 01:58:52,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:52,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:58:52,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:52,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:58:52,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:58:52,837 INFO L87 Difference]: Start difference. First operand 13304 states and 19004 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-21 01:58:54,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:58:54,793 INFO L93 Difference]: Finished difference Result 22416 states and 32052 transitions. [2021-11-21 01:58:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:58:54,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 439 [2021-11-21 01:58:54,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:58:54,886 INFO L225 Difference]: With dead ends: 22416 [2021-11-21 01:58:54,886 INFO L226 Difference]: Without dead ends: 13284 [2021-11-21 01:58:54,941 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 [2021-11-21 01:58:54,942 INFO L933 BasicCegarLoop]: 1997 mSDtfsCounter, 2135 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:58:54,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2135 Valid, 1997 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-21 01:58:54,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13284 states. [2021-11-21 01:58:55,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13284 to 13284. [2021-11-21 01:58:55,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13284 states, 7644 states have (on average 1.315018315018315) internal successors, (10052), 7950 states have internal predecessors, (10052), 4458 states have call successors, (4458), 1187 states have call predecessors, (4458), 1181 states have return successors, (4454), 4357 states have call predecessors, (4454), 4454 states have call successors, (4454) [2021-11-21 01:58:55,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13284 states to 13284 states and 18964 transitions. [2021-11-21 01:58:55,906 INFO L78 Accepts]: Start accepts. Automaton has 13284 states and 18964 transitions. Word has length 439 [2021-11-21 01:58:55,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:58:55,907 INFO L470 AbstractCegarLoop]: Abstraction has 13284 states and 18964 transitions. [2021-11-21 01:58:55,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-21 01:58:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 13284 states and 18964 transitions. [2021-11-21 01:58:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-11-21 01:58:55,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:55,942 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:58:55,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:58:55,942 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:58:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:55,943 INFO L85 PathProgramCache]: Analyzing trace with hash 497019535, now seen corresponding path program 1 times [2021-11-21 01:58:55,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:55,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896814047] [2021-11-21 01:58:55,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:55,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1710 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1701 trivial. 0 not checked. [2021-11-21 01:58:56,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:56,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896814047] [2021-11-21 01:58:56,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896814047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:56,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:56,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:58:56,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755734478] [2021-11-21 01:58:56,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:56,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:58:56,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:56,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:58:56,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:58:56,303 INFO L87 Difference]: Start difference. First operand 13284 states and 18964 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-21 01:58:57,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:00,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:00,769 INFO L93 Difference]: Finished difference Result 25482 states and 37145 transitions. [2021-11-21 01:59:00,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:59:00,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 465 [2021-11-21 01:59:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:00,851 INFO L225 Difference]: With dead ends: 25482 [2021-11-21 01:59:00,851 INFO L226 Difference]: Without dead ends: 16427 [2021-11-21 01:59:00,893 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 [2021-11-21 01:59:00,894 INFO L933 BasicCegarLoop]: 2730 mSDtfsCounter, 557 mSDsluCounter, 2364 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 4876 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:00,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 4876 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-21 01:59:00,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16427 states. [2021-11-21 01:59:01,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16427 to 13288. [2021-11-21 01:59:01,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13288 states, 7648 states have (on average 1.3148535564853556) internal successors, (10056), 7954 states have internal predecessors, (10056), 4458 states have call successors, (4458), 1187 states have call predecessors, (4458), 1181 states have return successors, (4454), 4357 states have call predecessors, (4454), 4454 states have call successors, (4454) [2021-11-21 01:59:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13288 states to 13288 states and 18968 transitions. [2021-11-21 01:59:01,769 INFO L78 Accepts]: Start accepts. Automaton has 13288 states and 18968 transitions. Word has length 465 [2021-11-21 01:59:01,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:01,770 INFO L470 AbstractCegarLoop]: Abstraction has 13288 states and 18968 transitions. [2021-11-21 01:59:01,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-21 01:59:01,771 INFO L276 IsEmpty]: Start isEmpty. Operand 13288 states and 18968 transitions. [2021-11-21 01:59:01,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2021-11-21 01:59:01,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:01,814 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:01,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:59:01,815 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:59:01,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:01,815 INFO L85 PathProgramCache]: Analyzing trace with hash -875476567, now seen corresponding path program 1 times [2021-11-21 01:59:01,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:01,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646411898] [2021-11-21 01:59:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:01,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1811 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 1798 trivial. 0 not checked. [2021-11-21 01:59:02,363 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:02,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646411898] [2021-11-21 01:59:02,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646411898] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:59:02,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590396807] [2021-11-21 01:59:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:02,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:02,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:59:02,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:59:02,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:59:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:03,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 4547 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:59:03,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:59:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1811 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 1734 trivial. 0 not checked. [2021-11-21 01:59:04,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:59:04,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590396807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:04,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:59:04,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2021-11-21 01:59:04,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66131771] [2021-11-21 01:59:04,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:04,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:59:04,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:04,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:59:04,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:59:04,848 INFO L87 Difference]: Start difference. First operand 13288 states and 18968 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2021-11-21 01:59:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:08,594 INFO L93 Difference]: Finished difference Result 26728 states and 38689 transitions. [2021-11-21 01:59:08,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:59:08,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 544 [2021-11-21 01:59:08,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:08,657 INFO L225 Difference]: With dead ends: 26728 [2021-11-21 01:59:08,657 INFO L226 Difference]: Without dead ends: 13483 [2021-11-21 01:59:08,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:59:08,731 INFO L933 BasicCegarLoop]: 2006 mSDtfsCounter, 9 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:08,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 4000 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-21 01:59:08,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13483 states. [2021-11-21 01:59:09,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13483 to 13366. [2021-11-21 01:59:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13366 states, 7700 states have (on average 1.3144155844155845) internal successors, (10121), 8006 states have internal predecessors, (10121), 4484 states have call successors, (4484), 1187 states have call predecessors, (4484), 1181 states have return successors, (4480), 4383 states have call predecessors, (4480), 4480 states have call successors, (4480) [2021-11-21 01:59:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13366 states to 13366 states and 19085 transitions. [2021-11-21 01:59:09,609 INFO L78 Accepts]: Start accepts. Automaton has 13366 states and 19085 transitions. Word has length 544 [2021-11-21 01:59:09,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:09,610 INFO L470 AbstractCegarLoop]: Abstraction has 13366 states and 19085 transitions. [2021-11-21 01:59:09,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2021-11-21 01:59:09,611 INFO L276 IsEmpty]: Start isEmpty. Operand 13366 states and 19085 transitions. [2021-11-21 01:59:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2021-11-21 01:59:09,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:09,637 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:09,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:59:09,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-21 01:59:09,865 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:59:09,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:09,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1855542227, now seen corresponding path program 1 times [2021-11-21 01:59:09,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:09,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39168362] [2021-11-21 01:59:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:09,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:10,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 1834 trivial. 0 not checked. [2021-11-21 01:59:10,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:10,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39168362] [2021-11-21 01:59:10,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39168362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:10,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:10,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:59:10,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473082277] [2021-11-21 01:59:10,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:10,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:59:10,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:10,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:59:10,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:59:10,439 INFO L87 Difference]: Start difference. First operand 13366 states and 19085 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 4 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (79), 4 states have call predecessors, (79), 4 states have call successors, (79) [2021-11-21 01:59:16,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:21,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:21,175 INFO L93 Difference]: Finished difference Result 27300 states and 39183 transitions. [2021-11-21 01:59:21,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:59:21,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 4 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (79), 4 states have call predecessors, (79), 4 states have call successors, (79) Word has length 570 [2021-11-21 01:59:21,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:21,274 INFO L225 Difference]: With dead ends: 27300 [2021-11-21 01:59:21,274 INFO L226 Difference]: Without dead ends: 13977 [2021-11-21 01:59:21,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:59:21,336 INFO L933 BasicCegarLoop]: 1994 mSDtfsCounter, 73 mSDsluCounter, 8724 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 9842 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:21,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 9842 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1233 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2021-11-21 01:59:21,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13977 states. [2021-11-21 01:59:22,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13977 to 13925. [2021-11-21 01:59:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13925 states, 8051 states have (on average 1.3168550490622284) internal successors, (10602), 8357 states have internal predecessors, (10602), 4679 states have call successors, (4679), 1200 states have call predecessors, (4679), 1194 states have return successors, (4688), 4578 states have call predecessors, (4688), 4675 states have call successors, (4688) [2021-11-21 01:59:22,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13925 states to 13925 states and 19969 transitions. [2021-11-21 01:59:22,392 INFO L78 Accepts]: Start accepts. Automaton has 13925 states and 19969 transitions. Word has length 570 [2021-11-21 01:59:22,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:22,393 INFO L470 AbstractCegarLoop]: Abstraction has 13925 states and 19969 transitions. [2021-11-21 01:59:22,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 4 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (79), 4 states have call predecessors, (79), 4 states have call successors, (79) [2021-11-21 01:59:22,394 INFO L276 IsEmpty]: Start isEmpty. Operand 13925 states and 19969 transitions. [2021-11-21 01:59:22,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2021-11-21 01:59:22,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:22,420 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:22,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:59:22,421 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:59:22,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash 507390452, now seen corresponding path program 1 times [2021-11-21 01:59:22,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:22,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502785090] [2021-11-21 01:59:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:22,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1842 trivial. 0 not checked. [2021-11-21 01:59:22,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:22,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502785090] [2021-11-21 01:59:22,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502785090] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:59:22,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506440405] [2021-11-21 01:59:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:22,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:22,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:59:22,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:59:22,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:59:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:24,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 4655 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:59:24,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:59:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 800 proven. 0 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2021-11-21 01:59:25,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:59:25,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506440405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:25,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:59:25,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 01:59:25,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186971329] [2021-11-21 01:59:25,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:25,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:59:25,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:25,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:59:25,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:25,557 INFO L87 Difference]: Start difference. First operand 13925 states and 19969 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2021-11-21 01:59:27,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:27,693 INFO L93 Difference]: Finished difference Result 13927 states and 19970 transitions. [2021-11-21 01:59:27,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:59:27,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 570 [2021-11-21 01:59:27,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:27,752 INFO L225 Difference]: With dead ends: 13927 [2021-11-21 01:59:27,752 INFO L226 Difference]: Without dead ends: 13921 [2021-11-21 01:59:27,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:27,762 INFO L933 BasicCegarLoop]: 1995 mSDtfsCounter, 1967 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:27,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 1995 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 01:59:27,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13921 states. [2021-11-21 01:59:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13921 to 13921. [2021-11-21 01:59:28,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13921 states, 8048 states have (on average 1.315854870775348) internal successors, (10590), 8353 states have internal predecessors, (10590), 4678 states have call successors, (4678), 1200 states have call predecessors, (4678), 1194 states have return successors, (4688), 4578 states have call predecessors, (4688), 4675 states have call successors, (4688) [2021-11-21 01:59:28,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13921 states to 13921 states and 19956 transitions. [2021-11-21 01:59:28,526 INFO L78 Accepts]: Start accepts. Automaton has 13921 states and 19956 transitions. Word has length 570 [2021-11-21 01:59:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:28,531 INFO L470 AbstractCegarLoop]: Abstraction has 13921 states and 19956 transitions. [2021-11-21 01:59:28,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2021-11-21 01:59:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 13921 states and 19956 transitions. [2021-11-21 01:59:28,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2021-11-21 01:59:28,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:28,576 INFO L514 BasicCegarLoop]: trace histogram [58, 45, 29, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:28,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:59:28,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:28,793 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:59:28,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:28,794 INFO L85 PathProgramCache]: Analyzing trace with hash -700557489, now seen corresponding path program 1 times [2021-11-21 01:59:28,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:28,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090799690] [2021-11-21 01:59:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:28,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8877 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8877 trivial. 0 not checked. [2021-11-21 01:59:29,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:29,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090799690] [2021-11-21 01:59:29,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090799690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:29,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:29,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:59:29,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186996621] [2021-11-21 01:59:29,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:29,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:59:29,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:59:29,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:59:29,338 INFO L87 Difference]: Start difference. First operand 13921 states and 19956 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2021-11-21 01:59:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:35,518 INFO L93 Difference]: Finished difference Result 36984 states and 53049 transitions. [2021-11-21 01:59:35,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:59:35,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) Word has length 998 [2021-11-21 01:59:35,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:35,623 INFO L225 Difference]: With dead ends: 36984 [2021-11-21 01:59:35,623 INFO L226 Difference]: Without dead ends: 23106 [2021-11-21 01:59:35,682 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 [2021-11-21 01:59:35,683 INFO L933 BasicCegarLoop]: 3328 mSDtfsCounter, 2013 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 5262 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:35,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2013 Valid, 5262 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-21 01:59:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23106 states. [2021-11-21 01:59:37,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23106 to 22957. [2021-11-21 01:59:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22957 states, 13430 states have (on average 1.3212211466865227) internal successors, (17744), 13939 states have internal predecessors, (17744), 7602 states have call successors, (7602), 1932 states have call predecessors, (7602), 1924 states have return successors, (7624), 7420 states have call predecessors, (7624), 7599 states have call successors, (7624) [2021-11-21 01:59:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22957 states to 22957 states and 32970 transitions. [2021-11-21 01:59:37,465 INFO L78 Accepts]: Start accepts. Automaton has 22957 states and 32970 transitions. Word has length 998 [2021-11-21 01:59:37,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:37,466 INFO L470 AbstractCegarLoop]: Abstraction has 22957 states and 32970 transitions. [2021-11-21 01:59:37,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2021-11-21 01:59:37,467 INFO L276 IsEmpty]: Start isEmpty. Operand 22957 states and 32970 transitions. [2021-11-21 01:59:37,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1106 [2021-11-21 01:59:37,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:37,519 INFO L514 BasicCegarLoop]: trace histogram [58, 45, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:37,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 01:59:37,520 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:59:37,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:37,521 INFO L85 PathProgramCache]: Analyzing trace with hash 167233731, now seen corresponding path program 1 times [2021-11-21 01:59:37,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:37,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391748260] [2021-11-21 01:59:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:37,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9961 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 9957 trivial. 0 not checked. [2021-11-21 01:59:38,174 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:38,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391748260] [2021-11-21 01:59:38,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391748260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:59:38,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628657974] [2021-11-21 01:59:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:38,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:38,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:59:38,181 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:59:38,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:59:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:40,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 7458 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:59:40,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:59:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9961 backedges. 774 proven. 0 refuted. 0 times theorem prover too weak. 9187 trivial. 0 not checked. [2021-11-21 01:59:42,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:59:42,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628657974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:42,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:59:42,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 01:59:42,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672165107] [2021-11-21 01:59:42,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:42,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:59:42,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:42,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:59:42,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:42,550 INFO L87 Difference]: Start difference. First operand 22957 states and 32970 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2021-11-21 01:59:46,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:48,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:48,756 INFO L93 Difference]: Finished difference Result 55394 states and 79707 transitions. [2021-11-21 01:59:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:59:48,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) Word has length 1105 [2021-11-21 01:59:48,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:48,912 INFO L225 Difference]: With dead ends: 55394 [2021-11-21 01:59:48,912 INFO L226 Difference]: Without dead ends: 32895 [2021-11-21 01:59:48,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1110 GetRequests, 1107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:48,996 INFO L933 BasicCegarLoop]: 2624 mSDtfsCounter, 2035 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 4538 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:48,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2035 Valid, 4538 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 478 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-21 01:59:49,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32895 states. [2021-11-21 01:59:50,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32895 to 32746. [2021-11-21 01:59:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32746 states, 19371 states have (on average 1.330184296112746) internal successors, (25767), 20093 states have internal predecessors, (25767), 10678 states have call successors, (10678), 2706 states have call predecessors, (10678), 2696 states have return successors, (10712), 10413 states have call predecessors, (10712), 10675 states have call successors, (10712) [2021-11-21 01:59:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32746 states to 32746 states and 47157 transitions. [2021-11-21 01:59:50,889 INFO L78 Accepts]: Start accepts. Automaton has 32746 states and 47157 transitions. Word has length 1105 [2021-11-21 01:59:50,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:50,891 INFO L470 AbstractCegarLoop]: Abstraction has 32746 states and 47157 transitions. [2021-11-21 01:59:50,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2021-11-21 01:59:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 32746 states and 47157 transitions. [2021-11-21 01:59:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2021-11-21 01:59:50,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:50,967 INFO L514 BasicCegarLoop]: trace histogram [58, 45, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:51,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:59:51,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-21 01:59:51,193 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:59:51,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:51,193 INFO L85 PathProgramCache]: Analyzing trace with hash -250762943, now seen corresponding path program 1 times [2021-11-21 01:59:51,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:51,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795883509] [2021-11-21 01:59:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:51,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9975 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9975 trivial. 0 not checked. [2021-11-21 01:59:52,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:52,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795883509] [2021-11-21 01:59:52,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795883509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:52,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:52,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:59:52,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922139405] [2021-11-21 01:59:52,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:52,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:59:52,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:52,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:59:52,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:59:52,185 INFO L87 Difference]: Start difference. First operand 32746 states and 47157 transitions. Second operand has 8 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 3 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (98), 4 states have call predecessors, (98), 3 states have call successors, (98) [2021-11-21 01:59:57,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:59:59,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:07,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:00:07,861 INFO L93 Difference]: Finished difference Result 65194 states and 94074 transitions. [2021-11-21 02:00:07,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 02:00:07,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 3 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (98), 4 states have call predecessors, (98), 3 states have call successors, (98) Word has length 1125 [2021-11-21 02:00:07,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:00:08,054 INFO L225 Difference]: With dead ends: 65194 [2021-11-21 02:00:08,054 INFO L226 Difference]: Without dead ends: 32906 [2021-11-21 02:00:08,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-21 02:00:08,282 INFO L933 BasicCegarLoop]: 1988 mSDtfsCounter, 9 mSDsluCounter, 13210 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 13879 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-21 02:00:08,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 13879 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1690 Invalid, 2 Unknown, 0 Unchecked, 14.1s Time] [2021-11-21 02:00:08,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32906 states. [2021-11-21 02:00:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32906 to 32806. [2021-11-21 02:00:10,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32806 states, 19411 states have (on average 1.329503889547164) internal successors, (25807), 20113 states have internal predecessors, (25807), 10698 states have call successors, (10698), 2706 states have call predecessors, (10698), 2696 states have return successors, (10732), 10433 states have call predecessors, (10732), 10695 states have call successors, (10732) [2021-11-21 02:00:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32806 states to 32806 states and 47237 transitions. [2021-11-21 02:00:10,184 INFO L78 Accepts]: Start accepts. Automaton has 32806 states and 47237 transitions. Word has length 1125 [2021-11-21 02:00:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:00:10,185 INFO L470 AbstractCegarLoop]: Abstraction has 32806 states and 47237 transitions. [2021-11-21 02:00:10,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 3 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (98), 4 states have call predecessors, (98), 3 states have call successors, (98) [2021-11-21 02:00:10,185 INFO L276 IsEmpty]: Start isEmpty. Operand 32806 states and 47237 transitions. [2021-11-21 02:00:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2021-11-21 02:00:10,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:00:10,255 INFO L514 BasicCegarLoop]: trace histogram [58, 45, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:00:10,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 02:00:10,255 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:00:10,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:00:10,256 INFO L85 PathProgramCache]: Analyzing trace with hash 294450872, now seen corresponding path program 1 times [2021-11-21 02:00:10,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:00:10,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065083712] [2021-11-21 02:00:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:10,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:00:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9975 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9975 trivial. 0 not checked. [2021-11-21 02:00:10,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:00:10,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065083712] [2021-11-21 02:00:10,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065083712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:00:10,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:00:10,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:00:10,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423218394] [2021-11-21 02:00:10,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:00:10,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:00:10,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:00:10,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:00:10,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:00:10,947 INFO L87 Difference]: Start difference. First operand 32806 states and 47237 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2021-11-21 02:00:14,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:17,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:00:17,163 INFO L93 Difference]: Finished difference Result 65370 states and 94258 transitions. [2021-11-21 02:00:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:00:17,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 1128 [2021-11-21 02:00:17,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:00:17,317 INFO L225 Difference]: With dead ends: 65370 [2021-11-21 02:00:17,317 INFO L226 Difference]: Without dead ends: 33022 [2021-11-21 02:00:17,578 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 [2021-11-21 02:00:17,579 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 5 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3994 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-21 02:00:17,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 3994 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 437 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-21 02:00:17,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33022 states. [2021-11-21 02:00:19,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33022 to 32830. [2021-11-21 02:00:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32830 states, 19435 states have (on average 1.3290969899665552) internal successors, (25831), 20137 states have internal predecessors, (25831), 10698 states have call successors, (10698), 2706 states have call predecessors, (10698), 2696 states have return successors, (10732), 10433 states have call predecessors, (10732), 10695 states have call successors, (10732) [2021-11-21 02:00:19,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32830 states to 32830 states and 47261 transitions. [2021-11-21 02:00:19,598 INFO L78 Accepts]: Start accepts. Automaton has 32830 states and 47261 transitions. Word has length 1128 [2021-11-21 02:00:19,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:00:19,599 INFO L470 AbstractCegarLoop]: Abstraction has 32830 states and 47261 transitions. [2021-11-21 02:00:19,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2021-11-21 02:00:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand 32830 states and 47261 transitions. [2021-11-21 02:00:19,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1171 [2021-11-21 02:00:19,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:00:19,651 INFO L514 BasicCegarLoop]: trace histogram [62, 47, 31, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:00:19,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 02:00:19,651 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:00:19,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:00:19,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1780726169, now seen corresponding path program 1 times [2021-11-21 02:00:19,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:00:19,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760369399] [2021-11-21 02:00:19,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:19,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:00:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:20,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11063 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11062 trivial. 0 not checked. [2021-11-21 02:00:20,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:00:20,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760369399] [2021-11-21 02:00:20,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760369399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 02:00:20,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 02:00:20,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 02:00:20,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747381007] [2021-11-21 02:00:20,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 02:00:20,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 02:00:20,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 02:00:20,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 02:00:20,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 02:00:20,346 INFO L87 Difference]: Start difference. First operand 32830 states and 47261 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2021-11-21 02:00:23,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:00:26,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:00:26,516 INFO L93 Difference]: Finished difference Result 65322 states and 94138 transitions. [2021-11-21 02:00:26,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 02:00:26,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) Word has length 1170 [2021-11-21 02:00:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:00:26,675 INFO L225 Difference]: With dead ends: 65322 [2021-11-21 02:00:26,675 INFO L226 Difference]: Without dead ends: 32950 [2021-11-21 02:00:26,762 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 [2021-11-21 02:00:26,763 INFO L933 BasicCegarLoop]: 1995 mSDtfsCounter, 2 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3987 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-21 02:00:26,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3987 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-21 02:00:26,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32950 states. [2021-11-21 02:00:28,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32950 to 32854. [2021-11-21 02:00:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32854 states, 19459 states have (on average 1.3286910940952772) internal successors, (25855), 20161 states have internal predecessors, (25855), 10698 states have call successors, (10698), 2706 states have call predecessors, (10698), 2696 states have return successors, (10732), 10433 states have call predecessors, (10732), 10695 states have call successors, (10732) [2021-11-21 02:00:28,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32854 states to 32854 states and 47285 transitions. [2021-11-21 02:00:28,621 INFO L78 Accepts]: Start accepts. Automaton has 32854 states and 47285 transitions. Word has length 1170 [2021-11-21 02:00:28,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:00:28,624 INFO L470 AbstractCegarLoop]: Abstraction has 32854 states and 47285 transitions. [2021-11-21 02:00:28,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2021-11-21 02:00:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand 32854 states and 47285 transitions. [2021-11-21 02:00:28,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1210 [2021-11-21 02:00:28,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:00:28,724 INFO L514 BasicCegarLoop]: trace histogram [66, 49, 33, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:00:28,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 02:00:28,725 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 02:00:28,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:00:28,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1895209003, now seen corresponding path program 1 times [2021-11-21 02:00:28,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:00:28,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687311393] [2021-11-21 02:00:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:28,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:00:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12236 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12234 trivial. 0 not checked. [2021-11-21 02:00:29,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:00:29,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687311393] [2021-11-21 02:00:29,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687311393] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 02:00:29,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746264058] [2021-11-21 02:00:29,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:29,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:00:29,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:00:29,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:00:29,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0862635e-92c8-4c0c-a039-d3ac0ddeb64d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 02:00:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:31,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 7999 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 02:00:31,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:00:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 12236 backedges. 597 proven. 1 refuted. 0 times theorem prover too weak. 11638 trivial. 0 not checked. [2021-11-21 02:00:33,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:00:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 12236 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12234 trivial. 0 not checked. [2021-11-21 02:00:38,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746264058] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:00:38,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1907187792] [2021-11-21 02:00:38,096 INFO L159 IcfgInterpreter]: Started Sifa with 299 locations of interest [2021-11-21 02:00:38,096 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 02:00:38,108 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 02:00:38,115 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 02:00:38,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 02:00:50,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:50,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:50,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:50,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:50,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:50,705 INFO L244 Elim1Store]: Index analysis took 824 ms [2021-11-21 02:01:22,348 WARN L227 SmtUtils]: Spent 31.59s on a formula simplification. DAG size of input: 1666 DAG size of output: 749 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 02:01:22,354 INFO L354 Elim1Store]: treesize reduction 6420, result has 19.4 percent of original size [2021-11-21 02:01:22,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 78 select indices, 78 select index equivalence classes, 3011 disjoint index pairs (out of 3003 index pairs), introduced 78 new quantified variables, introduced 81 case distinctions, treesize of input 409 treesize of output 1786 [2021-11-21 02:02:26,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:02:27,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:02:27,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:02:27,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:02:27,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:02:28,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:02:28,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:02:28,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:02:28,982 INFO L244 Elim1Store]: Index analysis took 3913 ms