./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fd18c623be1f9191aaeb26a7b3c18eeb579e4f661e34cc28939d56ae6edd64a3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:03:36,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:03:36,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:03:36,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:03:36,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:03:36,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:03:36,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:03:36,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:03:36,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:03:36,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:03:36,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:03:36,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:03:36,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:03:36,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:03:36,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:03:36,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:03:36,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:03:36,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:03:36,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:03:36,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:03:36,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:03:36,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:03:36,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:03:36,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:03:36,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:03:36,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:03:36,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:03:36,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:03:36,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:03:36,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:03:36,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:03:36,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:03:36,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:03:36,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:03:36,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:03:36,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:03:36,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:03:36,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:03:36,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:03:36,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:03:36,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:03:36,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:03:36,333 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:03:36,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:03:36,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:03:36,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:03:36,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:03:36,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:03:36,336 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:03:36,336 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:03:36,336 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:03:36,337 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:03:36,338 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:03:36,338 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:03:36,338 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:03:36,338 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:03:36,339 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:03:36,339 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:03:36,339 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:03:36,339 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:03:36,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:03:36,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:03:36,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:03:36,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:03:36,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:03:36,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:03:36,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:03:36,341 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:03:36,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:03:36,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:03:36,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:03:36,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:03:36,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:03:36,343 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:03:36,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:03:36,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:03:36,344 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:03:36,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:03:36,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:03:36,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:03:36,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd18c623be1f9191aaeb26a7b3c18eeb579e4f661e34cc28939d56ae6edd64a3 [2022-11-23 15:03:36,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:03:36,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:03:36,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:03:36,660 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:03:36,660 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:03:36,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i [2022-11-23 15:03:39,707 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:03:40,297 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:03:40,298 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i [2022-11-23 15:03:40,341 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW/data/38fc42826/e852d814b678476dbc0a62a116e4d01d/FLAG0df704051 [2022-11-23 15:03:40,363 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW/data/38fc42826/e852d814b678476dbc0a62a116e4d01d [2022-11-23 15:03:40,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:03:40,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:03:40,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:03:40,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:03:40,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:03:40,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:03:40" (1/1) ... [2022-11-23 15:03:40,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6855485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:40, skipping insertion in model container [2022-11-23 15:03:40,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:03:40" (1/1) ... [2022-11-23 15:03:40,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:03:40,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:03:41,519 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i[164502,164515] [2022-11-23 15:03:42,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:03:42,639 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:03:42,796 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i[164502,164515] [2022-11-23 15:03:42,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:03:43,149 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:03:43,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:43 WrapperNode [2022-11-23 15:03:43,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:03:43,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:03:43,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:03:43,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:03:43,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:43" (1/1) ... [2022-11-23 15:03:43,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:43" (1/1) ... [2022-11-23 15:03:43,414 INFO L138 Inliner]: procedures = 267, calls = 1412, calls flagged for inlining = 132, calls inlined = 127, statements flattened = 3569 [2022-11-23 15:03:43,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:03:43,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:03:43,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:03:43,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:03:43,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:43" (1/1) ... [2022-11-23 15:03:43,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:43" (1/1) ... [2022-11-23 15:03:43,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:43" (1/1) ... [2022-11-23 15:03:43,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:43" (1/1) ... [2022-11-23 15:03:43,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:43" (1/1) ... [2022-11-23 15:03:43,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:43" (1/1) ... [2022-11-23 15:03:43,641 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:43" (1/1) ... [2022-11-23 15:03:43,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:43" (1/1) ... [2022-11-23 15:03:43,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:03:43,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:03:43,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:03:43,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:03:43,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:43" (1/1) ... [2022-11-23 15:03:43,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:03:43,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:03:43,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:03:43,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b360a922-a01d-4425-950b-02dd4599a036/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:03:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:03:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:03:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:03:43,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:03:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_is_valid [2022-11-23 15:03:43,842 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_is_valid [2022-11-23 15:03:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_mac_address [2022-11-23 15:03:43,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_mac_address [2022-11-23 15:03:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_open [2022-11-23 15:03:43,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_open [2022-11-23 15:03:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-11-23 15:03:43,843 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-11-23 15:03:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:03:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:03:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-23 15:03:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-23 15:03:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 15:03:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 15:03:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2022-11-23 15:03:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2022-11-23 15:03:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 15:03:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 15:03:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 15:03:43,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 15:03:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_resume [2022-11-23 15:03:43,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_resume [2022-11-23 15:03:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:03:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:03:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-11-23 15:03:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-11-23 15:03:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:03:43,850 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:03:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 15:03:43,850 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 15:03:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_rx_mode [2022-11-23 15:03:43,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_rx_mode [2022-11-23 15:03:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 15:03:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 15:03:43,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:03:43,851 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 15:03:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 15:03:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_powermode [2022-11-23 15:03:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_powermode [2022-11-23 15:03:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-23 15:03:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-23 15:03:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 15:03:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_stop [2022-11-23 15:03:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_stop [2022-11-23 15:03:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 15:03:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 15:03:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:03:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_wren [2022-11-23 15:03:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_wren [2022-11-23 15:03:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-23 15:03:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-23 15:03:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 15:03:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 15:03:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 15:03:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 15:03:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-23 15:03:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:03:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:03:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:03:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:03:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_eeprom_release [2022-11-23 15:03:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_eeprom_release [2022-11-23 15:03:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-11-23 15:03:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-11-23 15:03:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-23 15:03:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-23 15:03:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-23 15:03:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-23 15:03:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 15:03:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 15:03:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 15:03:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 15:03:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 15:03:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 15:03:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 15:03:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 15:03:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_irq [2022-11-23 15:03:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_irq [2022-11-23 15:03:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:03:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 15:03:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 15:03:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_enable [2022-11-23 15:03:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_enable [2022-11-23 15:03:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-23 15:03:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-23 15:03:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 15:03:43,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 15:03:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:03:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-23 15:03:43,861 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-23 15:03:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:03:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 15:03:43,861 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 15:03:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rx_1msg [2022-11-23 15:03:43,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rx_1msg [2022-11-23 15:03:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2022-11-23 15:03:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2022-11-23 15:03:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-11-23 15:03:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-11-23 15:03:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:03:43,863 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:03:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-23 15:03:43,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-23 15:03:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_eeprom_claim [2022-11-23 15:03:43,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_eeprom_claim [2022-11-23 15:03:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_soft_reset [2022-11-23 15:03:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_soft_reset [2022-11-23 15:03:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:03:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-23 15:03:43,868 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-23 15:03:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:03:43,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:03:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg [2022-11-23 15:03:43,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg [2022-11-23 15:03:43,871 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2022-11-23 15:03:43,871 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2022-11-23 15:03:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg8 [2022-11-23 15:03:43,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg8 [2022-11-23 15:03:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:03:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg16 [2022-11-23 15:03:43,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg16 [2022-11-23 15:03:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:03:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-23 15:03:43,876 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-23 15:03:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 15:03:43,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 15:03:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:03:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-23 15:03:43,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-23 15:03:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-11-23 15:03:43,876 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-11-23 15:03:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-23 15:03:43,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-23 15:03:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 15:03:43,877 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 15:03:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_ioctl [2022-11-23 15:03:43,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_ioctl [2022-11-23 15:03:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-23 15:03:43,877 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-23 15:03:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 15:03:43,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 15:03:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 15:03:43,878 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 15:03:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_write_mac_addr [2022-11-23 15:03:43,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_write_mac_addr [2022-11-23 15:03:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_wrreg16 [2022-11-23 15:03:43,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_wrreg16 [2022-11-23 15:03:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 15:03:43,878 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 15:03:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:03:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_suspend [2022-11-23 15:03:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_suspend [2022-11-23 15:03:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2022-11-23 15:03:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2022-11-23 15:03:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:03:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:03:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 15:03:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 15:03:44,566 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:03:44,570 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:03:44,869 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:04:17,142 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:04:18,226 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:04:18,226 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-23 15:04:18,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:04:18 BoogieIcfgContainer [2022-11-23 15:04:18,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:04:18,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:04:18,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:04:18,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:04:18,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:03:40" (1/3) ... [2022-11-23 15:04:18,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c8f6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:04:18, skipping insertion in model container [2022-11-23 15:04:18,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:43" (2/3) ... [2022-11-23 15:04:18,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c8f6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:04:18, skipping insertion in model container [2022-11-23 15:04:18,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:04:18" (3/3) ... [2022-11-23 15:04:18,239 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8851.ko-entry_point.cil.out.i [2022-11-23 15:04:18,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:04:18,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:04:18,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:04:18,349 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@efd2478, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:04:18,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:04:18,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 876 states, 538 states have (on average 1.3847583643122676) internal successors, (745), 559 states have internal predecessors, (745), 267 states have call successors, (267), 72 states have call predecessors, (267), 71 states have return successors, (257), 256 states have call predecessors, (257), 257 states have call successors, (257) [2022-11-23 15:04:18,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-23 15:04:18,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:18,377 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:04:18,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:18,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1935378783, now seen corresponding path program 1 times [2022-11-23 15:04:18,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:18,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787200439] [2022-11-23 15:04:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:18,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-23 15:04:19,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:19,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787200439] [2022-11-23 15:04:19,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787200439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:19,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:19,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:04:19,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363377544] [2022-11-23 15:04:19,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:19,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:04:19,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:19,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:04:19,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:19,337 INFO L87 Difference]: Start difference. First operand has 876 states, 538 states have (on average 1.3847583643122676) internal successors, (745), 559 states have internal predecessors, (745), 267 states have call successors, (267), 72 states have call predecessors, (267), 71 states have return successors, (257), 256 states have call predecessors, (257), 257 states have call successors, (257) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 15:04:21,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:25,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:04:25,491 INFO L93 Difference]: Finished difference Result 2570 states and 3776 transitions. [2022-11-23 15:04:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:04:25,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 49 [2022-11-23 15:04:25,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:04:25,519 INFO L225 Difference]: With dead ends: 2570 [2022-11-23 15:04:25,519 INFO L226 Difference]: Without dead ends: 1683 [2022-11-23 15:04:25,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:25,531 INFO L413 NwaCegarLoop]: 1333 mSDtfsCounter, 1200 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:04:25,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 2409 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 346 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-23 15:04:25,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-11-23 15:04:25,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1683. [2022-11-23 15:04:25,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1044 states have (on average 1.3601532567049808) internal successors, (1420), 1058 states have internal predecessors, (1420), 498 states have call successors, (498), 141 states have call predecessors, (498), 140 states have return successors, (497), 495 states have call predecessors, (497), 497 states have call successors, (497) [2022-11-23 15:04:25,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2415 transitions. [2022-11-23 15:04:25,768 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2415 transitions. Word has length 49 [2022-11-23 15:04:25,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:04:25,769 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2415 transitions. [2022-11-23 15:04:25,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 15:04:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2415 transitions. [2022-11-23 15:04:25,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 15:04:25,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:25,781 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:04:25,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:04:25,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:25,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:25,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1622246935, now seen corresponding path program 1 times [2022-11-23 15:04:25,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:25,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800410668] [2022-11-23 15:04:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:25,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-23 15:04:26,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:26,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800410668] [2022-11-23 15:04:26,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800410668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:26,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:26,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:04:26,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019691037] [2022-11-23 15:04:26,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:26,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:04:26,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:26,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:04:26,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:04:26,666 INFO L87 Difference]: Start difference. First operand 1683 states and 2415 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 15:04:28,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:34,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:35,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:36,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:04:36,659 INFO L93 Difference]: Finished difference Result 3353 states and 4849 transitions. [2022-11-23 15:04:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:04:36,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-11-23 15:04:36,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:04:36,681 INFO L225 Difference]: With dead ends: 3353 [2022-11-23 15:04:36,681 INFO L226 Difference]: Without dead ends: 3348 [2022-11-23 15:04:36,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:04:36,686 INFO L413 NwaCegarLoop]: 1315 mSDtfsCounter, 1194 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 3705 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:04:36,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 3705 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 523 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-11-23 15:04:36,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2022-11-23 15:04:36,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 3340. [2022-11-23 15:04:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3340 states, 2070 states have (on average 1.3608695652173912) internal successors, (2817), 2098 states have internal predecessors, (2817), 989 states have call successors, (989), 281 states have call predecessors, (989), 280 states have return successors, (1026), 984 states have call predecessors, (1026), 988 states have call successors, (1026) [2022-11-23 15:04:36,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4832 transitions. [2022-11-23 15:04:36,869 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4832 transitions. Word has length 52 [2022-11-23 15:04:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:04:36,870 INFO L495 AbstractCegarLoop]: Abstraction has 3340 states and 4832 transitions. [2022-11-23 15:04:36,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 15:04:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4832 transitions. [2022-11-23 15:04:36,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-23 15:04:36,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:36,888 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 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] [2022-11-23 15:04:36,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:04:36,888 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:36,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:36,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1439867230, now seen corresponding path program 1 times [2022-11-23 15:04:36,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:36,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073813038] [2022-11-23 15:04:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:36,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-23 15:04:37,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:37,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073813038] [2022-11-23 15:04:37,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073813038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:37,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:37,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:04:37,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6397053] [2022-11-23 15:04:37,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:37,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:04:37,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:37,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:04:37,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:37,656 INFO L87 Difference]: Start difference. First operand 3340 states and 4832 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 15:04:39,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:44,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:04:44,444 INFO L93 Difference]: Finished difference Result 9394 states and 13544 transitions. [2022-11-23 15:04:44,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:04:44,445 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), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 198 [2022-11-23 15:04:44,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:04:44,484 INFO L225 Difference]: With dead ends: 9394 [2022-11-23 15:04:44,484 INFO L226 Difference]: Without dead ends: 6067 [2022-11-23 15:04:44,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:44,501 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 998 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:04:44,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 2263 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 385 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-23 15:04:44,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6067 states. [2022-11-23 15:04:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6067 to 6054. [2022-11-23 15:04:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6054 states, 3738 states have (on average 1.3558052434456929) internal successors, (5068), 3802 states have internal predecessors, (5068), 1787 states have call successors, (1787), 529 states have call predecessors, (1787), 528 states have return successors, (1860), 1770 states have call predecessors, (1860), 1786 states have call successors, (1860) [2022-11-23 15:04:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 8715 transitions. [2022-11-23 15:04:44,816 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 8715 transitions. Word has length 198 [2022-11-23 15:04:44,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:04:44,819 INFO L495 AbstractCegarLoop]: Abstraction has 6054 states and 8715 transitions. [2022-11-23 15:04:44,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 15:04:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 8715 transitions. [2022-11-23 15:04:44,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-23 15:04:44,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:44,828 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 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] [2022-11-23 15:04:44,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:04:44,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:44,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:44,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2080916787, now seen corresponding path program 1 times [2022-11-23 15:04:44,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:44,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499268358] [2022-11-23 15:04:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:44,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-23 15:04:45,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:45,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499268358] [2022-11-23 15:04:45,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499268358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:45,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:45,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:04:45,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195008779] [2022-11-23 15:04:45,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:45,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:04:45,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:45,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:04:45,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:45,562 INFO L87 Difference]: Start difference. First operand 6054 states and 8715 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-23 15:04:47,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:52,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:04:52,265 INFO L93 Difference]: Finished difference Result 17282 states and 24747 transitions. [2022-11-23 15:04:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:04:52,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 214 [2022-11-23 15:04:52,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:04:52,338 INFO L225 Difference]: With dead ends: 17282 [2022-11-23 15:04:52,339 INFO L226 Difference]: Without dead ends: 11241 [2022-11-23 15:04:52,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:52,373 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 1104 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:04:52,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 2439 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 371 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 15:04:52,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11241 states. [2022-11-23 15:04:53,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11241 to 11220. [2022-11-23 15:04:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11220 states, 6920 states have (on average 1.345664739884393) internal successors, (9312), 7040 states have internal predecessors, (9312), 3293 states have call successors, (3293), 1007 states have call predecessors, (3293), 1006 states have return successors, (3418), 3264 states have call predecessors, (3418), 3292 states have call successors, (3418) [2022-11-23 15:04:53,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11220 states to 11220 states and 16023 transitions. [2022-11-23 15:04:53,288 INFO L78 Accepts]: Start accepts. Automaton has 11220 states and 16023 transitions. Word has length 214 [2022-11-23 15:04:53,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:04:53,289 INFO L495 AbstractCegarLoop]: Abstraction has 11220 states and 16023 transitions. [2022-11-23 15:04:53,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-23 15:04:53,290 INFO L276 IsEmpty]: Start isEmpty. Operand 11220 states and 16023 transitions. [2022-11-23 15:04:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-23 15:04:53,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:53,305 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 15:04:53,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:04:53,305 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:53,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1069386287, now seen corresponding path program 1 times [2022-11-23 15:04:53,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:53,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686139967] [2022-11-23 15:04:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:53,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:54,570 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-23 15:04:54,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:54,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686139967] [2022-11-23 15:04:54,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686139967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:54,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:54,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:04:54,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782942743] [2022-11-23 15:04:54,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:54,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:04:54,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:54,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:04:54,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:04:54,573 INFO L87 Difference]: Start difference. First operand 11220 states and 16023 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:04:56,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:02,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:02,030 INFO L93 Difference]: Finished difference Result 22507 states and 32203 transitions. [2022-11-23 15:05:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:05:02,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 219 [2022-11-23 15:05:02,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:02,112 INFO L225 Difference]: With dead ends: 22507 [2022-11-23 15:05:02,112 INFO L226 Difference]: Without dead ends: 11300 [2022-11-23 15:05:02,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:05:02,162 INFO L413 NwaCegarLoop]: 1052 mSDtfsCounter, 1221 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:02,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 3128 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 550 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-23 15:05:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11300 states. [2022-11-23 15:05:02,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11300 to 11284. [2022-11-23 15:05:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11284 states, 6960 states have (on average 1.3436781609195403) internal successors, (9352), 7104 states have internal predecessors, (9352), 3293 states have call successors, (3293), 1007 states have call predecessors, (3293), 1030 states have return successors, (3482), 3264 states have call predecessors, (3482), 3292 states have call successors, (3482) [2022-11-23 15:05:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 16127 transitions. [2022-11-23 15:05:02,920 INFO L78 Accepts]: Start accepts. Automaton has 11284 states and 16127 transitions. Word has length 219 [2022-11-23 15:05:02,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:02,922 INFO L495 AbstractCegarLoop]: Abstraction has 11284 states and 16127 transitions. [2022-11-23 15:05:02,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:05:02,922 INFO L276 IsEmpty]: Start isEmpty. Operand 11284 states and 16127 transitions. [2022-11-23 15:05:02,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-23 15:05:02,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:02,937 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 15:05:02,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:05:02,937 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:02,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:02,938 INFO L85 PathProgramCache]: Analyzing trace with hash -773430112, now seen corresponding path program 1 times [2022-11-23 15:05:02,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:02,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874698966] [2022-11-23 15:05:02,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:02,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-23 15:05:03,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:03,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874698966] [2022-11-23 15:05:03,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874698966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:03,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:03,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:05:03,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180257195] [2022-11-23 15:05:03,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:03,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:05:03,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:03,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:05:03,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:05:03,970 INFO L87 Difference]: Start difference. First operand 11284 states and 16127 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:05:06,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:14,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:15,030 INFO L93 Difference]: Finished difference Result 33970 states and 48695 transitions. [2022-11-23 15:05:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:05:15,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 215 [2022-11-23 15:05:15,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:15,157 INFO L225 Difference]: With dead ends: 33970 [2022-11-23 15:05:15,158 INFO L226 Difference]: Without dead ends: 22699 [2022-11-23 15:05:15,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:05:15,330 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 1243 mSDsluCounter, 3607 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 4907 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:15,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 4907 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 771 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-23 15:05:15,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22699 states. [2022-11-23 15:05:16,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22699 to 22582. [2022-11-23 15:05:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22582 states, 13942 states have (on average 1.3431358485152776) internal successors, (18726), 14246 states have internal predecessors, (18726), 6563 states have call successors, (6563), 1997 states have call predecessors, (6563), 2076 states have return successors, (7038), 6506 states have call predecessors, (7038), 6562 states have call successors, (7038) [2022-11-23 15:05:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22582 states to 22582 states and 32327 transitions. [2022-11-23 15:05:16,886 INFO L78 Accepts]: Start accepts. Automaton has 22582 states and 32327 transitions. Word has length 215 [2022-11-23 15:05:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:16,887 INFO L495 AbstractCegarLoop]: Abstraction has 22582 states and 32327 transitions. [2022-11-23 15:05:16,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:05:16,887 INFO L276 IsEmpty]: Start isEmpty. Operand 22582 states and 32327 transitions. [2022-11-23 15:05:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-23 15:05:16,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:16,903 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 15:05:16,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:05:16,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:16,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:16,904 INFO L85 PathProgramCache]: Analyzing trace with hash -877096621, now seen corresponding path program 1 times [2022-11-23 15:05:16,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:16,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391984001] [2022-11-23 15:05:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:16,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-23 15:05:18,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:18,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391984001] [2022-11-23 15:05:18,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391984001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:18,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:18,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:05:18,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633611500] [2022-11-23 15:05:18,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:18,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:05:18,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:18,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:05:18,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:05:18,028 INFO L87 Difference]: Start difference. First operand 22582 states and 32327 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:05:20,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:28,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:28,528 INFO L93 Difference]: Finished difference Result 56566 states and 81047 transitions. [2022-11-23 15:05:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:05:28,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 213 [2022-11-23 15:05:28,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:28,924 INFO L225 Difference]: With dead ends: 56566 [2022-11-23 15:05:28,935 INFO L226 Difference]: Without dead ends: 33997 [2022-11-23 15:05:29,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:05:29,026 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 1241 mSDsluCounter, 3603 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 4903 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:29,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 4903 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 769 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-11-23 15:05:29,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33997 states. [2022-11-23 15:05:31,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33997 to 33800. [2022-11-23 15:05:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33800 states, 20852 states have (on average 1.344139650872818) internal successors, (28028), 21372 states have internal predecessors, (28028), 9833 states have call successors, (9833), 2987 states have call predecessors, (9833), 3114 states have return successors, (10530), 9684 states have call predecessors, (10530), 9832 states have call successors, (10530) [2022-11-23 15:05:31,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33800 states to 33800 states and 48391 transitions. [2022-11-23 15:05:31,301 INFO L78 Accepts]: Start accepts. Automaton has 33800 states and 48391 transitions. Word has length 213 [2022-11-23 15:05:31,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:31,304 INFO L495 AbstractCegarLoop]: Abstraction has 33800 states and 48391 transitions. [2022-11-23 15:05:31,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:05:31,305 INFO L276 IsEmpty]: Start isEmpty. Operand 33800 states and 48391 transitions. [2022-11-23 15:05:31,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-23 15:05:31,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:31,332 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 15:05:31,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:05:31,332 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:31,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:31,333 INFO L85 PathProgramCache]: Analyzing trace with hash 635960031, now seen corresponding path program 1 times [2022-11-23 15:05:31,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:31,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419407479] [2022-11-23 15:05:31,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:31,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-23 15:05:32,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:32,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419407479] [2022-11-23 15:05:32,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419407479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:32,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:32,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:05:32,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905243246] [2022-11-23 15:05:32,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:32,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:05:32,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:32,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:05:32,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:05:32,377 INFO L87 Difference]: Start difference. First operand 33800 states and 48391 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:05:34,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:41,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:44,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:44,446 INFO L93 Difference]: Finished difference Result 101470 states and 145327 transitions. [2022-11-23 15:05:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:05:44,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 216 [2022-11-23 15:05:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:44,820 INFO L225 Difference]: With dead ends: 101470 [2022-11-23 15:05:44,820 INFO L226 Difference]: Without dead ends: 67683 [2022-11-23 15:05:44,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:05:44,933 INFO L413 NwaCegarLoop]: 1296 mSDtfsCounter, 1241 mSDsluCounter, 3594 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 4890 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:44,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 4890 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 761 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-11-23 15:05:45,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67683 states. [2022-11-23 15:05:48,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67683 to 67390. [2022-11-23 15:05:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67390 states, 41502 states have (on average 1.3458146595344802) internal successors, (55854), 42734 states have internal predecessors, (55854), 19659 states have call successors, (19659), 5973 states have call predecessors, (19659), 6228 states have return successors, (20958), 19170 states have call predecessors, (20958), 19658 states have call successors, (20958) [2022-11-23 15:05:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67390 states to 67390 states and 96471 transitions. [2022-11-23 15:05:48,847 INFO L78 Accepts]: Start accepts. Automaton has 67390 states and 96471 transitions. Word has length 216 [2022-11-23 15:05:48,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:48,853 INFO L495 AbstractCegarLoop]: Abstraction has 67390 states and 96471 transitions. [2022-11-23 15:05:48,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:05:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 67390 states and 96471 transitions. [2022-11-23 15:05:48,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-23 15:05:48,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:48,899 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 15:05:48,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:05:48,900 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:48,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:48,900 INFO L85 PathProgramCache]: Analyzing trace with hash -466289701, now seen corresponding path program 1 times [2022-11-23 15:05:48,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:48,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964460256] [2022-11-23 15:05:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:48,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-23 15:05:50,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:50,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964460256] [2022-11-23 15:05:50,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964460256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:50,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:50,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:05:50,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614328621] [2022-11-23 15:05:50,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:50,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:05:50,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:50,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:05:50,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:05:50,407 INFO L87 Difference]: Start difference. First operand 67390 states and 96471 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:05:52,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:06:00,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:00,855 INFO L93 Difference]: Finished difference Result 112656 states and 161375 transitions. [2022-11-23 15:06:00,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:06:00,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 216 [2022-11-23 15:06:00,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:01,414 INFO L225 Difference]: With dead ends: 112656 [2022-11-23 15:06:01,415 INFO L226 Difference]: Without dead ends: 67651 [2022-11-23 15:06:01,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:06:01,538 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 1242 mSDsluCounter, 3607 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 4907 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:01,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 4907 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 765 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-23 15:06:01,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67651 states. [2022-11-23 15:06:04,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67651 to 67390. [2022-11-23 15:06:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67390 states, 41502 states have (on average 1.3458146595344802) internal successors, (55854), 42734 states have internal predecessors, (55854), 19659 states have call successors, (19659), 5973 states have call predecessors, (19659), 6228 states have return successors, (20830), 19170 states have call predecessors, (20830), 19658 states have call successors, (20830) [2022-11-23 15:06:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67390 states to 67390 states and 96343 transitions. [2022-11-23 15:06:05,290 INFO L78 Accepts]: Start accepts. Automaton has 67390 states and 96343 transitions. Word has length 216 [2022-11-23 15:06:05,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:05,293 INFO L495 AbstractCegarLoop]: Abstraction has 67390 states and 96343 transitions. [2022-11-23 15:06:05,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:06:05,294 INFO L276 IsEmpty]: Start isEmpty. Operand 67390 states and 96343 transitions. [2022-11-23 15:06:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-23 15:06:05,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:05,351 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 15:06:05,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:06:05,351 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:05,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:05,352 INFO L85 PathProgramCache]: Analyzing trace with hash 446192868, now seen corresponding path program 1 times [2022-11-23 15:06:05,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:05,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736195600] [2022-11-23 15:06:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:05,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-23 15:06:06,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:06,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736195600] [2022-11-23 15:06:06,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736195600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:06,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:06,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:06:06,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243365668] [2022-11-23 15:06:06,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:06,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:06:06,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:06,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:06:06,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:06:06,912 INFO L87 Difference]: Start difference. First operand 67390 states and 96343 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:06:08,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:06:14,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:06:15,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:06:18,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:18,629 INFO L93 Difference]: Finished difference Result 101273 states and 144819 transitions. [2022-11-23 15:06:18,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:06:18,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 217 [2022-11-23 15:06:18,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:19,049 INFO L225 Difference]: With dead ends: 101273 [2022-11-23 15:06:19,049 INFO L226 Difference]: Without dead ends: 67486 [2022-11-23 15:06:19,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:06:19,152 INFO L413 NwaCegarLoop]: 1052 mSDtfsCounter, 1223 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:19,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 3128 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 544 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 15:06:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67486 states. [2022-11-23 15:06:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67486 to 67390. [2022-11-23 15:06:22,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67390 states, 41502 states have (on average 1.3458146595344802) internal successors, (55854), 42734 states have internal predecessors, (55854), 19659 states have call successors, (19659), 5973 states have call predecessors, (19659), 6228 states have return successors, (20638), 19170 states have call predecessors, (20638), 19658 states have call successors, (20638) [2022-11-23 15:06:23,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67390 states to 67390 states and 96151 transitions. [2022-11-23 15:06:23,085 INFO L78 Accepts]: Start accepts. Automaton has 67390 states and 96151 transitions. Word has length 217 [2022-11-23 15:06:23,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:23,086 INFO L495 AbstractCegarLoop]: Abstraction has 67390 states and 96151 transitions. [2022-11-23 15:06:23,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:06:23,086 INFO L276 IsEmpty]: Start isEmpty. Operand 67390 states and 96151 transitions. [2022-11-23 15:06:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-23 15:06:23,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:23,135 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 15:06:23,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:06:23,136 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:23,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:23,136 INFO L85 PathProgramCache]: Analyzing trace with hash 91849580, now seen corresponding path program 1 times [2022-11-23 15:06:23,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:23,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017306723] [2022-11-23 15:06:23,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:23,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-23 15:06:24,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:24,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017306723] [2022-11-23 15:06:24,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017306723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:24,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:24,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:06:24,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482905950] [2022-11-23 15:06:24,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:24,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:06:24,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:24,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:06:24,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:06:24,499 INFO L87 Difference]: Start difference. First operand 67390 states and 96151 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:06:26,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:06:31,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:06:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:35,087 INFO L93 Difference]: Finished difference Result 101273 states and 144483 transitions. [2022-11-23 15:06:35,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:06:35,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 218 [2022-11-23 15:06:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:35,541 INFO L225 Difference]: With dead ends: 101273 [2022-11-23 15:06:35,542 INFO L226 Difference]: Without dead ends: 66862 [2022-11-23 15:06:35,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:06:35,656 INFO L413 NwaCegarLoop]: 1052 mSDtfsCounter, 1222 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:35,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 3128 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 538 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-23 15:06:35,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66862 states. [2022-11-23 15:06:38,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66862 to 66814. [2022-11-23 15:06:39,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66814 states, 41046 states have (on average 1.3438093845928958) internal successors, (55158), 42206 states have internal predecessors, (55158), 19611 states have call successors, (19611), 5973 states have call predecessors, (19611), 6156 states have return successors, (20374), 19122 states have call predecessors, (20374), 19610 states have call successors, (20374) [2022-11-23 15:06:39,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66814 states to 66814 states and 95143 transitions. [2022-11-23 15:06:39,251 INFO L78 Accepts]: Start accepts. Automaton has 66814 states and 95143 transitions. Word has length 218 [2022-11-23 15:06:39,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:39,251 INFO L495 AbstractCegarLoop]: Abstraction has 66814 states and 95143 transitions. [2022-11-23 15:06:39,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:06:39,252 INFO L276 IsEmpty]: Start isEmpty. Operand 66814 states and 95143 transitions. [2022-11-23 15:06:39,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-23 15:06:39,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:39,298 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 15:06:39,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 15:06:39,298 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:39,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:39,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1851927122, now seen corresponding path program 1 times [2022-11-23 15:06:39,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:39,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988191719] [2022-11-23 15:06:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:39,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-23 15:06:40,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:40,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988191719] [2022-11-23 15:06:40,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988191719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:40,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:40,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:06:40,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182880715] [2022-11-23 15:06:40,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:40,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:06:40,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:40,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:06:40,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:06:40,565 INFO L87 Difference]: Start difference. First operand 66814 states and 95143 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-23 15:06:42,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:06:46,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:06:49,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []