./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.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_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/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_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/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_f7d1a794-e515-4ed4-83cb-0727b5741260/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 cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 --- 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 15:49:55,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:49:55,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:49:55,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:49:55,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:49:55,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:49:55,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:49:55,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:49:55,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:49:55,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:49:55,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:49:55,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:49:55,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:49:55,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:49:55,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:49:55,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:49:55,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:49:55,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:49:55,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:49:55,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:49:55,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:49:55,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:49:55,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:49:55,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:49:55,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:49:55,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:49:55,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:49:55,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:49:55,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:49:55,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:49:55,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:49:55,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:49:55,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:49:55,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:49:55,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:49:55,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:49:55,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:49:55,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:49:55,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:49:55,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:49:55,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:49:55,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:49:55,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:49:55,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:49:55,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:49:55,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:49:55,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:49:55,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:49:55,425 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:49:55,425 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:49:55,425 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:49:55,425 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:49:55,427 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:49:55,427 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:49:55,427 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:49:55,427 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:49:55,428 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:49:55,428 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:49:55,428 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:49:55,428 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:49:55,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:49:55,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:49:55,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:49:55,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:49:55,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:49:55,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:49:55,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:49:55,431 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:49:55,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:49:55,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:49:55,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:49:55,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:49:55,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:49:55,433 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:49:55,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:49:55,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:49:55,434 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:49:55,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:49:55,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:49:55,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:49:55,435 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_f7d1a794-e515-4ed4-83cb-0727b5741260/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 [2022-11-23 15:49:55,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:49:55,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:49:55,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:49:55,796 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:49:55,797 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:49:55,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2022-11-23 15:49:59,077 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:50:00,076 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:50:00,078 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2022-11-23 15:50:00,186 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/data/5911e0bff/4200b804bd89432ca7289ee8a9a866bd/FLAG061c74f0d [2022-11-23 15:50:00,210 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/data/5911e0bff/4200b804bd89432ca7289ee8a9a866bd [2022-11-23 15:50:00,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:50:00,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:50:00,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:50:00,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:50:00,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:50:00,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:50:00" (1/1) ... [2022-11-23 15:50:00,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7036bb1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:00, skipping insertion in model container [2022-11-23 15:50:00,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:50:00" (1/1) ... [2022-11-23 15:50:00,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:50:00,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:50:05,825 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_f7d1a794-e515-4ed4-83cb-0727b5741260/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2022-11-23 15:50:05,836 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_f7d1a794-e515-4ed4-83cb-0727b5741260/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2022-11-23 15:50:05,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:50:05,958 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:50:06,627 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_f7d1a794-e515-4ed4-83cb-0727b5741260/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2022-11-23 15:50:06,628 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_f7d1a794-e515-4ed4-83cb-0727b5741260/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2022-11-23 15:50:06,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:50:07,056 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:50:07,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07 WrapperNode [2022-11-23 15:50:07,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:50:07,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:50:07,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:50:07,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:50:07,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2022-11-23 15:50:07,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2022-11-23 15:50:07,635 INFO L138 Inliner]: procedures = 623, calls = 3565, calls flagged for inlining = 310, calls inlined = 274, statements flattened = 8067 [2022-11-23 15:50:07,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:50:07,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:50:07,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:50:07,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:50:07,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2022-11-23 15:50:07,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2022-11-23 15:50:07,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2022-11-23 15:50:07,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2022-11-23 15:50:07,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2022-11-23 15:50:07,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2022-11-23 15:50:08,023 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2022-11-23 15:50:08,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2022-11-23 15:50:08,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:50:08,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:50:08,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:50:08,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:50:08,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2022-11-23 15:50:08,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:50:08,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:50:08,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:50:08,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:50:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-23 15:50:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-23 15:50:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 15:50:08,393 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 15:50:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_phy_reg [2022-11-23 15:50:08,393 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_phy_reg [2022-11-23 15:50:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:50:08,393 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:50:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_force_ps [2022-11-23 15:50:08,394 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_force_ps [2022-11-23 15:50:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-23 15:50:08,394 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-23 15:50:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 15:50:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 15:50:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:50:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:50:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_del_timer [2022-11-23 15:50:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_del_timer [2022-11-23 15:50:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-23 15:50:08,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-23 15:50:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-23 15:50:08,396 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-23 15:50:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 15:50:08,397 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 15:50:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 15:50:08,397 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 15:50:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 15:50:08,397 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 15:50:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_disable [2022-11-23 15:50:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_disable [2022-11-23 15:50:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_io_resume [2022-11-23 15:50:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_io_resume [2022-11-23 15:50:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_restart_autoneg [2022-11-23 15:50:08,399 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_restart_autoneg [2022-11-23 15:50:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_close [2022-11-23 15:50:08,399 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_close [2022-11-23 15:50:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 15:50:08,399 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 15:50:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 15:50:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 15:50:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tpd [2022-11-23 15:50:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tpd [2022-11-23 15:50:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 15:50:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 15:50:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-23 15:50:08,401 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-23 15:50:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 15:50:08,401 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 15:50:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:50:08,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:50:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 15:50:08,402 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 15:50:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_irq [2022-11-23 15:50:08,402 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_irq [2022-11-23 15:50:08,403 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 15:50:08,403 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 15:50:08,403 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-23 15:50:08,403 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-23 15:50:08,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:50:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_106 [2022-11-23 15:50:08,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_106 [2022-11-23 15:50:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-11-23 15:50:08,404 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-11-23 15:50:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_shutdown [2022-11-23 15:50:08,405 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_shutdown [2022-11-23 15:50:08,405 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-23 15:50:08,405 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-23 15:50:08,405 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_check_eeprom_exist [2022-11-23 15:50:08,405 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_check_eeprom_exist [2022-11-23 15:50:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-23 15:50:08,406 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-23 15:50:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 15:50:08,406 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 15:50:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 15:50:08,406 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 15:50:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:50:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_hw_set_mac_addr [2022-11-23 15:50:08,407 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_hw_set_mac_addr [2022-11-23 15:50:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 15:50:08,407 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 15:50:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 15:50:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 15:50:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tx_buffer [2022-11-23 15:50:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tx_buffer [2022-11-23 15:50:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:50:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 15:50:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 15:50:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:50:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 15:50:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 15:50:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-23 15:50:08,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-23 15:50:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:50:08,410 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:50:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-23 15:50:08,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-23 15:50:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-23 15:50:08,411 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-23 15:50:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 15:50:08,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 15:50:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-23 15:50:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-23 15:50:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 15:50:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 15:50:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 15:50:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 15:50:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_reset [2022-11-23 15:50:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_reset [2022-11-23 15:50:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 15:50:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 15:50:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 15:50:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 15:50:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_down [2022-11-23 15:50:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_down [2022-11-23 15:50:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:50:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure __atl1e_vlan_mode [2022-11-23 15:50:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __atl1e_vlan_mode [2022-11-23 15:50:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 15:50:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 15:50:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 15:50:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 15:50:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:50:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-23 15:50:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-23 15:50:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 15:50:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 15:50:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 15:50:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 15:50:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:50:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 15:50:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-23 15:50:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-23 15:50:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-23 15:50:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-23 15:50:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-23 15:50:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-23 15:50:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2022-11-23 15:50:08,419 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2022-11-23 15:50:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_set_multi [2022-11-23 15:50:08,419 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_set_multi [2022-11-23 15:50:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_remove [2022-11-23 15:50:08,419 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_remove [2022-11-23 15:50:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-23 15:50:08,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-23 15:50:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2022-11-23 15:50:08,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2022-11-23 15:50:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 15:50:08,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 15:50:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-23 15:50:08,421 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-23 15:50:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 15:50:08,421 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 15:50:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 15:50:08,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 15:50:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_ring_resources [2022-11-23 15:50:08,422 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_ring_resources [2022-11-23 15:50:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-23 15:50:08,422 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-23 15:50:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-23 15:50:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-23 15:50:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 15:50:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 15:50:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_validate_option [2022-11-23 15:50:08,424 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_validate_option [2022-11-23 15:50:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-23 15:50:08,424 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-23 15:50:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-11-23 15:50:08,424 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-11-23 15:50:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:50:08,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:50:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-23 15:50:08,425 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-23 15:50:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 15:50:08,425 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 15:50:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:50:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:50:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:50:08,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:50:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 15:50:08,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 15:50:08,427 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 15:50:08,427 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 15:50:08,427 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-23 15:50:08,427 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-23 15:50:08,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-23 15:50:08,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-23 15:50:08,428 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_tx_ring [2022-11-23 15:50:08,428 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_tx_ring [2022-11-23 15:50:08,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2022-11-23 15:50:08,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2022-11-23 15:50:08,429 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 15:50:08,429 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 15:50:08,429 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-23 15:50:08,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-23 15:50:08,429 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-23 15:50:08,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-23 15:50:08,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2022-11-23 15:50:08,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2022-11-23 15:50:08,430 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 15:50:08,430 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 15:50:08,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:50:08,430 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:50:08,431 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_resume [2022-11-23 15:50:08,431 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_resume [2022-11-23 15:50:08,431 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 15:50:08,431 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 15:50:08,431 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-23 15:50:08,432 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-23 15:50:08,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:50:08,432 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 15:50:08,432 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 15:50:08,432 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-23 15:50:08,432 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-23 15:50:08,433 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 15:50:08,433 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 15:50:08,433 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_tx_timeout [2022-11-23 15:50:08,433 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_tx_timeout [2022-11-23 15:50:08,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_114 [2022-11-23 15:50:08,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_114 [2022-11-23 15:50:08,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:50:08,434 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_vlan_mode [2022-11-23 15:50:08,434 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_vlan_mode [2022-11-23 15:50:08,434 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_write_phy_reg [2022-11-23 15:50:08,434 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_write_phy_reg [2022-11-23 15:50:08,435 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-23 15:50:08,435 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-23 15:50:08,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_102 [2022-11-23 15:50:08,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_102 [2022-11-23 15:50:08,435 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_up [2022-11-23 15:50:08,435 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_up [2022-11-23 15:50:08,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:50:08,436 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_commit [2022-11-23 15:50:08,436 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_commit [2022-11-23 15:50:08,436 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-23 15:50:08,436 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-23 15:50:08,436 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-23 15:50:08,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-23 15:50:08,437 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 15:50:08,437 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 15:50:08,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 15:50:08,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 15:50:08,438 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 15:50:08,438 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 15:50:08,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 15:50:08,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 15:50:08,438 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reinit_locked [2022-11-23 15:50:08,438 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reinit_locked [2022-11-23 15:50:08,439 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_init [2022-11-23 15:50:08,439 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_init [2022-11-23 15:50:08,439 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_intr [2022-11-23 15:50:08,439 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_intr [2022-11-23 15:50:08,439 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 15:50:08,440 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 15:50:08,440 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2022-11-23 15:50:08,440 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2022-11-23 15:50:08,440 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_open [2022-11-23 15:50:08,440 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_open [2022-11-23 15:50:08,440 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 15:50:08,441 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 15:50:08,441 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-23 15:50:08,441 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-23 15:50:08,441 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_enable [2022-11-23 15:50:08,441 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_enable [2022-11-23 15:50:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:50:08,442 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:50:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:50:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_netpoll [2022-11-23 15:50:08,442 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_netpoll [2022-11-23 15:50:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:50:08,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:50:08,443 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_eeprom [2022-11-23 15:50:08,443 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_eeprom [2022-11-23 15:50:08,443 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_suspend [2022-11-23 15:50:08,443 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_suspend [2022-11-23 15:50:08,443 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 15:50:08,444 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 15:50:08,444 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-23 15:50:08,444 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-23 15:50:08,444 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_nway_reset [2022-11-23 15:50:08,444 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_nway_reset [2022-11-23 15:50:08,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_105 [2022-11-23 15:50:08,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_105 [2022-11-23 15:50:08,445 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-23 15:50:08,445 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-23 15:50:08,445 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_request_irq [2022-11-23 15:50:08,445 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_request_irq [2022-11-23 15:50:08,446 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2022-11-23 15:50:08,446 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2022-11-23 15:50:08,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 15:50:08,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 15:50:08,446 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-23 15:50:08,446 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-23 15:50:08,447 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-23 15:50:08,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-23 15:50:08,447 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_eeprom_len [2022-11-23 15:50:08,447 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_eeprom_len [2022-11-23 15:50:08,447 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-23 15:50:08,447 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-23 15:50:08,448 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-23 15:50:08,448 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-23 15:50:08,448 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reset_hw [2022-11-23 15:50:08,448 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reset_hw [2022-11-23 15:50:08,448 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-11-23 15:50:08,448 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-11-23 15:50:08,449 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 15:50:08,449 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 15:50:08,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:50:08,449 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-23 15:50:08,449 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-23 15:50:08,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 15:50:08,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 15:50:08,450 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_regs_len [2022-11-23 15:50:08,450 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_regs_len [2022-11-23 15:50:08,450 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_rx_ring [2022-11-23 15:50:08,450 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_rx_ring [2022-11-23 15:50:09,864 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:50:09,868 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:50:10,347 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:50:22,126 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 15:50:22,423 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:50:25,180 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:50:25,180 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:50:25,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:50:25 BoogieIcfgContainer [2022-11-23 15:50:25,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:50:25,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:50:25,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:50:25,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:50:25,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:50:00" (1/3) ... [2022-11-23 15:50:25,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23111a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:50:25, skipping insertion in model container [2022-11-23 15:50:25,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (2/3) ... [2022-11-23 15:50:25,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23111a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:50:25, skipping insertion in model container [2022-11-23 15:50:25,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:50:25" (3/3) ... [2022-11-23 15:50:25,198 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2022-11-23 15:50:25,219 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:50:25,219 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:50:25,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:50:25,349 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;@4b70d79a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:50:25,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:50:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 2192 states, 1276 states have (on average 1.2758620689655173) internal successors, (1628), 1301 states have internal predecessors, (1628), 767 states have call successors, (767), 149 states have call predecessors, (767), 148 states have return successors, (761), 759 states have call predecessors, (761), 761 states have call successors, (761) [2022-11-23 15:50:25,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-23 15:50:25,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:25,423 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:50:25,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:50:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:25,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1473982631, now seen corresponding path program 1 times [2022-11-23 15:50:25,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:25,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011416591] [2022-11-23 15:50:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:25,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:25,939 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:50:25,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988998292] [2022-11-23 15:50:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:25,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:50:25,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:50:25,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:50:25,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:50:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:27,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 3744 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:50:27,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:50:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2022-11-23 15:50:27,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:50:27,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:27,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011416591] [2022-11-23 15:50:27,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:50:27,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988998292] [2022-11-23 15:50:27,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988998292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:27,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:27,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:50:27,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417860824] [2022-11-23 15:50:27,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:27,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:50:27,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:50:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:27,981 INFO L87 Difference]: Start difference. First operand has 2192 states, 1276 states have (on average 1.2758620689655173) internal successors, (1628), 1301 states have internal predecessors, (1628), 767 states have call successors, (767), 149 states have call predecessors, (767), 148 states have return successors, (761), 759 states have call predecessors, (761), 761 states have call successors, (761) Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 15:50:30,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:34,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:36,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:38,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:50:39,322 INFO L93 Difference]: Finished difference Result 5860 states and 8440 transitions. [2022-11-23 15:50:39,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:50:39,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 197 [2022-11-23 15:50:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:50:39,366 INFO L225 Difference]: With dead ends: 5860 [2022-11-23 15:50:39,366 INFO L226 Difference]: Without dead ends: 3632 [2022-11-23 15:50:39,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 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 15:50:39,384 INFO L413 NwaCegarLoop]: 3337 mSDtfsCounter, 2186 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2186 SdHoareTripleChecker+Valid, 6013 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:50:39,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2186 Valid, 6013 Invalid, 844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 821 Invalid, 3 Unknown, 0 Unchecked, 10.9s Time] [2022-11-23 15:50:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2022-11-23 15:50:39,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3628. [2022-11-23 15:50:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 2149 states have (on average 1.2712889716147044) internal successors, (2732), 2188 states have internal predecessors, (2732), 1218 states have call successors, (1218), 260 states have call predecessors, (1218), 260 states have return successors, (1218), 1213 states have call predecessors, (1218), 1218 states have call successors, (1218) [2022-11-23 15:50:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 5168 transitions. [2022-11-23 15:50:39,864 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 5168 transitions. Word has length 197 [2022-11-23 15:50:39,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:50:39,867 INFO L495 AbstractCegarLoop]: Abstraction has 3628 states and 5168 transitions. [2022-11-23 15:50:39,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 15:50:39,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 5168 transitions. [2022-11-23 15:50:39,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-23 15:50:39,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:39,883 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 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] [2022-11-23 15:50:39,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:50:40,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 15:50:40,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:50:40,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:40,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1230566334, now seen corresponding path program 1 times [2022-11-23 15:50:40,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:40,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041482964] [2022-11-23 15:50:40,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:40,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2022-11-23 15:50:40,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:40,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041482964] [2022-11-23 15:50:40,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041482964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:40,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:40,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:50:40,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683745672] [2022-11-23 15:50:40,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:40,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:50:40,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:40,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:50:40,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:40,810 INFO L87 Difference]: Start difference. First operand 3628 states and 5168 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 15:50:43,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:46,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:48,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:50:50,749 INFO L93 Difference]: Finished difference Result 9218 states and 13043 transitions. [2022-11-23 15:50:50,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:50:50,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 202 [2022-11-23 15:50:50,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:50:50,797 INFO L225 Difference]: With dead ends: 9218 [2022-11-23 15:50:50,797 INFO L226 Difference]: Without dead ends: 5619 [2022-11-23 15:50:50,820 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 15:50:50,821 INFO L413 NwaCegarLoop]: 3147 mSDtfsCounter, 1835 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 5787 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:50:50,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1835 Valid, 5787 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 797 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2022-11-23 15:50:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5619 states. [2022-11-23 15:50:51,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5619 to 5616. [2022-11-23 15:50:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5616 states, 3318 states have (on average 1.2597950572634118) internal successors, (4180), 3378 states have internal predecessors, (4180), 1863 states have call successors, (1863), 435 states have call predecessors, (1863), 434 states have return successors, (1863), 1854 states have call predecessors, (1863), 1863 states have call successors, (1863) [2022-11-23 15:50:51,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5616 states to 5616 states and 7906 transitions. [2022-11-23 15:50:51,200 INFO L78 Accepts]: Start accepts. Automaton has 5616 states and 7906 transitions. Word has length 202 [2022-11-23 15:50:51,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:50:51,201 INFO L495 AbstractCegarLoop]: Abstraction has 5616 states and 7906 transitions. [2022-11-23 15:50:51,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 15:50:51,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5616 states and 7906 transitions. [2022-11-23 15:50:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-23 15:50:51,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:51,211 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:50:51,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:50:51,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:50:51,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:51,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1334433758, now seen corresponding path program 1 times [2022-11-23 15:50:51,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:51,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905184546] [2022-11-23 15:50:51,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:51,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:51,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:51,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905184546] [2022-11-23 15:50:51,567 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 15:50:51,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126118501] [2022-11-23 15:50:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:51,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:50:51,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:50:51,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:50:51,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:50:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:53,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 3924 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:50:53,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:50:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-23 15:50:53,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:50:53,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126118501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:53,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:53,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:50:53,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128334754] [2022-11-23 15:50:53,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:53,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:50:53,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:53,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:50:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:53,662 INFO L87 Difference]: Start difference. First operand 5616 states and 7906 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-23 15:50:57,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:00,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:01,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:51:01,923 INFO L93 Difference]: Finished difference Result 13568 states and 19072 transitions. [2022-11-23 15:51:01,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:51:01,923 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), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 238 [2022-11-23 15:51:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:51:01,981 INFO L225 Difference]: With dead ends: 13568 [2022-11-23 15:51:01,982 INFO L226 Difference]: Without dead ends: 7981 [2022-11-23 15:51:02,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 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 15:51:02,011 INFO L413 NwaCegarLoop]: 3460 mSDtfsCounter, 2839 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2839 SdHoareTripleChecker+Valid, 5595 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:51:02,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2839 Valid, 5595 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 792 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2022-11-23 15:51:02,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7981 states. [2022-11-23 15:51:02,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7981 to 7975. [2022-11-23 15:51:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7975 states, 4726 states have (on average 1.2632247143461701) internal successors, (5970), 4808 states have internal predecessors, (5970), 2613 states have call successors, (2613), 636 states have call predecessors, (2613), 635 states have return successors, (2613), 2599 states have call predecessors, (2613), 2613 states have call successors, (2613) [2022-11-23 15:51:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7975 states to 7975 states and 11196 transitions. [2022-11-23 15:51:02,488 INFO L78 Accepts]: Start accepts. Automaton has 7975 states and 11196 transitions. Word has length 238 [2022-11-23 15:51:02,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:51:02,490 INFO L495 AbstractCegarLoop]: Abstraction has 7975 states and 11196 transitions. [2022-11-23 15:51:02,492 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), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-23 15:51:02,492 INFO L276 IsEmpty]: Start isEmpty. Operand 7975 states and 11196 transitions. [2022-11-23 15:51:02,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-23 15:51:02,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:51:02,501 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 4, 4, 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] [2022-11-23 15:51:02,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:51:02,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-23 15:51:02,717 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:51:02,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:51:02,718 INFO L85 PathProgramCache]: Analyzing trace with hash 243102482, now seen corresponding path program 1 times [2022-11-23 15:51:02,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:51:02,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479360454] [2022-11-23 15:51:02,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:51:02,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:51:03,001 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:51:03,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859222919] [2022-11-23 15:51:03,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:51:03,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:51:03,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:51:03,004 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:51:03,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:51:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:51:04,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 4000 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:51:04,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:51:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2022-11-23 15:51:04,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:51:04,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:51:04,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479360454] [2022-11-23 15:51:04,746 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:51:04,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859222919] [2022-11-23 15:51:04,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859222919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:51:04,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:51:04,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:51:04,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761587071] [2022-11-23 15:51:04,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:51:04,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:51:04,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:51:04,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:51:04,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:51:04,751 INFO L87 Difference]: Start difference. First operand 7975 states and 11196 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-23 15:51:07,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:09,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:12,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:14,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:51:16,455 INFO L93 Difference]: Finished difference Result 17782 states and 24962 transitions. [2022-11-23 15:51:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:51:16,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 244 [2022-11-23 15:51:16,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:51:16,524 INFO L225 Difference]: With dead ends: 17782 [2022-11-23 15:51:16,524 INFO L226 Difference]: Without dead ends: 9836 [2022-11-23 15:51:16,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 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 15:51:16,558 INFO L413 NwaCegarLoop]: 3845 mSDtfsCounter, 2112 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 6455 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:51:16,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 6455 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 956 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2022-11-23 15:51:16,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9836 states. [2022-11-23 15:51:17,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9836 to 9831. [2022-11-23 15:51:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9831 states, 5838 states have (on average 1.26293251113395) internal successors, (7373), 5939 states have internal predecessors, (7373), 3202 states have call successors, (3202), 791 states have call predecessors, (3202), 790 states have return successors, (3202), 3184 states have call predecessors, (3202), 3202 states have call successors, (3202) [2022-11-23 15:51:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9831 states to 9831 states and 13777 transitions. [2022-11-23 15:51:17,204 INFO L78 Accepts]: Start accepts. Automaton has 9831 states and 13777 transitions. Word has length 244 [2022-11-23 15:51:17,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:51:17,208 INFO L495 AbstractCegarLoop]: Abstraction has 9831 states and 13777 transitions. [2022-11-23 15:51:17,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-23 15:51:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 9831 states and 13777 transitions. [2022-11-23 15:51:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-23 15:51:17,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:51:17,220 INFO L195 NwaCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:51:17,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:51:17,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:51:17,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:51:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:51:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash -890851141, now seen corresponding path program 1 times [2022-11-23 15:51:17,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:51:17,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493325088] [2022-11-23 15:51:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:51:17,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:51:17,639 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:51:17,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274971846] [2022-11-23 15:51:17,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:51:17,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:51:17,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:51:17,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:51:17,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:51:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:51:19,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 4209 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 15:51:19,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:51:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1037 trivial. 0 not checked. [2022-11-23 15:51:50,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:51:50,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:51:50,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493325088] [2022-11-23 15:51:50,365 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:51:50,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274971846] [2022-11-23 15:51:50,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274971846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:51:50,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:51:50,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:51:50,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34936323] [2022-11-23 15:51:50,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:51:50,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:51:50,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:51:50,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:51:50,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:51:50,368 INFO L87 Difference]: Start difference. First operand 9831 states and 13777 transitions. Second operand has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35) [2022-11-23 15:51:56,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:58,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:00,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:04,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:06,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:08,754 WARN L539 Checker$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 15:52:10,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:52:12,601 INFO L93 Difference]: Finished difference Result 12383 states and 17252 transitions. [2022-11-23 15:52:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:52:12,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35) Word has length 306 [2022-11-23 15:52:12,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:52:12,662 INFO L225 Difference]: With dead ends: 12383 [2022-11-23 15:52:12,662 INFO L226 Difference]: Without dead ends: 12381 [2022-11-23 15:52:12,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:52:12,671 INFO L413 NwaCegarLoop]: 3190 mSDtfsCounter, 1726 mSDsluCounter, 11327 mSDsCounter, 0 mSdLazyCounter, 2818 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 14517 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2818 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:52:12,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 14517 Invalid, 2821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2818 Invalid, 3 Unknown, 0 Unchecked, 21.4s Time] [2022-11-23 15:52:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12381 states. [2022-11-23 15:52:13,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12381 to 12374. [2022-11-23 15:52:13,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12374 states, 7367 states have (on average 1.2595357676123253) internal successors, (9279), 7499 states have internal predecessors, (9279), 3980 states have call successors, (3980), 1035 states have call predecessors, (3980), 1026 states have return successors, (3984), 3937 states have call predecessors, (3984), 3980 states have call successors, (3984) [2022-11-23 15:52:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12374 states to 12374 states and 17243 transitions. [2022-11-23 15:52:13,512 INFO L78 Accepts]: Start accepts. Automaton has 12374 states and 17243 transitions. Word has length 306 [2022-11-23 15:52:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:52:13,514 INFO L495 AbstractCegarLoop]: Abstraction has 12374 states and 17243 transitions. [2022-11-23 15:52:13,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 1 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35) [2022-11-23 15:52:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 12374 states and 17243 transitions. [2022-11-23 15:52:13,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-23 15:52:13,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:52:13,538 INFO L195 NwaCegarLoop]: trace histogram [21, 14, 14, 14, 14, 14, 14, 10, 10, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:52:13,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:52:13,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:52:13,754 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:52:13,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:52:13,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1449324865, now seen corresponding path program 1 times [2022-11-23 15:52:13,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:52:13,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940592760] [2022-11-23 15:52:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:52:13,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:52:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:52:14,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:52:14,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940592760] [2022-11-23 15:52:14,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 15:52:14,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819948708] [2022-11-23 15:52:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:52:14,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:52:14,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:52:14,154 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:52:14,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:52:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:52:15,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 4495 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:52:15,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:52:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2022-11-23 15:52:15,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:52:15,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819948708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:52:15,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:52:15,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:52:15,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078222905] [2022-11-23 15:52:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:52:15,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:52:15,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:52:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:52:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:52:15,940 INFO L87 Difference]: Start difference. First operand 12374 states and 17243 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 15:52:19,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:21,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:24,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:52:26,096 INFO L93 Difference]: Finished difference Result 35802 states and 49873 transitions. [2022-11-23 15:52:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:52:26,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 374 [2022-11-23 15:52:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:52:26,216 INFO L225 Difference]: With dead ends: 35802 [2022-11-23 15:52:26,216 INFO L226 Difference]: Without dead ends: 23475 [2022-11-23 15:52:26,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 372 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 15:52:26,275 INFO L413 NwaCegarLoop]: 3702 mSDtfsCounter, 2809 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2809 SdHoareTripleChecker+Valid, 6331 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:52:26,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2809 Valid, 6331 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 845 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2022-11-23 15:52:26,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23475 states. [2022-11-23 15:52:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23475 to 23454. [2022-11-23 15:52:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23454 states, 13991 states have (on average 1.260238724894575) internal successors, (17632), 14267 states have internal predecessors, (17632), 7502 states have call successors, (7502), 2001 states have call predecessors, (7502), 1960 states have return successors, (7526), 7362 states have call predecessors, (7526), 7502 states have call successors, (7526) [2022-11-23 15:52:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23454 states to 23454 states and 32660 transitions. [2022-11-23 15:52:28,157 INFO L78 Accepts]: Start accepts. Automaton has 23454 states and 32660 transitions. Word has length 374 [2022-11-23 15:52:28,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:52:28,158 INFO L495 AbstractCegarLoop]: Abstraction has 23454 states and 32660 transitions. [2022-11-23 15:52:28,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 15:52:28,159 INFO L276 IsEmpty]: Start isEmpty. Operand 23454 states and 32660 transitions. [2022-11-23 15:52:28,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-23 15:52:28,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:52:28,201 INFO L195 NwaCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 10, 10, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:28,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:52:28,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:52:28,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:52:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:52:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1852569720, now seen corresponding path program 1 times [2022-11-23 15:52:28,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:52:28,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640890176] [2022-11-23 15:52:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:52:28,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:52:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:52:28,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:52:28,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640890176] [2022-11-23 15:52:28,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 15:52:28,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914664395] [2022-11-23 15:52:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:52:28,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:52:28,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:52:28,725 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:52:28,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 15:52:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:52:30,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 4797 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:52:30,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:52:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2022-11-23 15:52:30,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:52:30,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914664395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:52:30,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:52:30,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:52:30,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79174260] [2022-11-23 15:52:30,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:52:30,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:52:30,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:52:30,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:52:30,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:52:30,758 INFO L87 Difference]: Start difference. First operand 23454 states and 32660 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-23 15:52:34,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:36,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:38,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:42,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:52:42,477 INFO L93 Difference]: Finished difference Result 66610 states and 93049 transitions. [2022-11-23 15:52:42,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:52:42,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 410 [2022-11-23 15:52:42,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:52:42,712 INFO L225 Difference]: With dead ends: 66610 [2022-11-23 15:52:42,712 INFO L226 Difference]: Without dead ends: 43203 [2022-11-23 15:52:42,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 408 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 15:52:42,799 INFO L413 NwaCegarLoop]: 4070 mSDtfsCounter, 2893 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 6742 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:52:42,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2893 Valid, 6742 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 916 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2022-11-23 15:52:42,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43203 states. [2022-11-23 15:52:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43203 to 43138. [2022-11-23 15:52:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43138 states, 25843 states have (on average 1.2613086715938553) internal successors, (32596), 26368 states have internal predecessors, (32596), 13799 states have call successors, (13799), 3575 states have call predecessors, (13799), 3495 states have return successors, (13903), 13514 states have call predecessors, (13903), 13799 states have call successors, (13903) [2022-11-23 15:52:46,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43138 states to 43138 states and 60298 transitions. [2022-11-23 15:52:46,048 INFO L78 Accepts]: Start accepts. Automaton has 43138 states and 60298 transitions. Word has length 410 [2022-11-23 15:52:46,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:52:46,049 INFO L495 AbstractCegarLoop]: Abstraction has 43138 states and 60298 transitions. [2022-11-23 15:52:46,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-23 15:52:46,050 INFO L276 IsEmpty]: Start isEmpty. Operand 43138 states and 60298 transitions. [2022-11-23 15:52:46,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-23 15:52:46,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:52:46,225 INFO L195 NwaCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 11, 11, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:52:46,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:52:46,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:52:46,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:52:46,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:52:46,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1267189847, now seen corresponding path program 1 times [2022-11-23 15:52:46,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:52:46,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388162859] [2022-11-23 15:52:46,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:52:46,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:52:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:52:46,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:52:46,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388162859] [2022-11-23 15:52:46,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 15:52:46,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21667351] [2022-11-23 15:52:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:52:46,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:52:46,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:52:46,848 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:52:46,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:52:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:52:48,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 4553 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:52:48,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:52:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 979 trivial. 0 not checked. [2022-11-23 15:52:48,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:52:48,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21667351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:52:48,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:52:48,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:52:48,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221563157] [2022-11-23 15:52:48,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:52:48,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:52:48,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:52:48,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:52:48,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:52:48,857 INFO L87 Difference]: Start difference. First operand 43138 states and 60298 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (53), 3 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-23 15:52:53,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:56,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:58,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:53:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:02,371 INFO L93 Difference]: Finished difference Result 128532 states and 179619 transitions. [2022-11-23 15:53:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:53:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (53), 3 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 392 [2022-11-23 15:53:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:53:03,109 INFO L225 Difference]: With dead ends: 128532 [2022-11-23 15:53:03,109 INFO L226 Difference]: Without dead ends: 85441 [2022-11-23 15:53:03,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 390 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 15:53:03,284 INFO L413 NwaCegarLoop]: 3932 mSDtfsCounter, 2806 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 6634 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:53:03,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2806 Valid, 6634 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 878 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2022-11-23 15:53:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85441 states. [2022-11-23 15:53:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85441 to 85342. [2022-11-23 15:53:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85342 states, 51095 states have (on average 1.2599275858694587) internal successors, (64376), 52209 states have internal predecessors, (64376), 27303 states have call successors, (27303), 7104 states have call predecessors, (27303), 6943 states have return successors, (27510), 26664 states have call predecessors, (27510), 27303 states have call successors, (27510) [2022-11-23 15:53:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85342 states to 85342 states and 119189 transitions. [2022-11-23 15:53:09,644 INFO L78 Accepts]: Start accepts. Automaton has 85342 states and 119189 transitions. Word has length 392 [2022-11-23 15:53:09,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:53:09,645 INFO L495 AbstractCegarLoop]: Abstraction has 85342 states and 119189 transitions. [2022-11-23 15:53:09,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (53), 3 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-23 15:53:09,645 INFO L276 IsEmpty]: Start isEmpty. Operand 85342 states and 119189 transitions. [2022-11-23 15:53:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-23 15:53:09,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:09,718 INFO L195 NwaCegarLoop]: trace histogram [23, 14, 14, 14, 14, 14, 14, 12, 12, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:53:09,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:53:09,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:53:09,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:53:09,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:09,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1770916320, now seen corresponding path program 1 times [2022-11-23 15:53:09,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:09,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635412255] [2022-11-23 15:53:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:09,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:10,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:53:10,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635412255] [2022-11-23 15:53:10,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 15:53:10,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048275417] [2022-11-23 15:53:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:10,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:53:10,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:53:10,190 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:53:10,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 15:53:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:12,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 4596 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:53:12,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:53:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 1049 trivial. 0 not checked. [2022-11-23 15:53:12,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:53:12,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048275417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:53:12,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:53:12,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:53:12,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140997473] [2022-11-23 15:53:12,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:53:12,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:53:12,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:53:12,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:53:12,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:53:12,444 INFO L87 Difference]: Start difference. First operand 85342 states and 119189 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-23 15:53:16,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:53:18,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:53:21,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:53:23,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:53:27,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:27,187 INFO L93 Difference]: Finished difference Result 171271 states and 238769 transitions. [2022-11-23 15:53:27,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:53:27,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 407 [2022-11-23 15:53:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:53:27,782 INFO L225 Difference]: With dead ends: 171271 [2022-11-23 15:53:27,782 INFO L226 Difference]: Without dead ends: 85976 [2022-11-23 15:53:28,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 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 15:53:28,188 INFO L413 NwaCegarLoop]: 2699 mSDtfsCounter, 80 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 5373 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:53:28,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 5373 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 764 Invalid, 3 Unknown, 0 Unchecked, 10.2s Time] [2022-11-23 15:53:28,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85976 states. [2022-11-23 15:53:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85976 to 85976. [2022-11-23 15:53:32,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85976 states, 51484 states have (on average 1.2580996037603915) internal successors, (64772), 52598 states have internal predecessors, (64772), 27330 states have call successors, (27330), 7322 states have call predecessors, (27330), 7161 states have return successors, (27537), 26691 states have call predecessors, (27537), 27330 states have call successors, (27537) [2022-11-23 15:53:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85976 states to 85976 states and 119639 transitions. [2022-11-23 15:53:33,349 INFO L78 Accepts]: Start accepts. Automaton has 85976 states and 119639 transitions. Word has length 407 [2022-11-23 15:53:33,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:53:33,350 INFO L495 AbstractCegarLoop]: Abstraction has 85976 states and 119639 transitions. [2022-11-23 15:53:33,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-23 15:53:33,350 INFO L276 IsEmpty]: Start isEmpty. Operand 85976 states and 119639 transitions. [2022-11-23 15:53:33,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-23 15:53:33,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:33,406 INFO L195 NwaCegarLoop]: trace histogram [23, 14, 14, 14, 14, 14, 14, 12, 12, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:53:33,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-23 15:53:33,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 15:53:33,624 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:53:33,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:33,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1933031950, now seen corresponding path program 2 times [2022-11-23 15:53:33,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:33,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815126884] [2022-11-23 15:53:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:33,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:34,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:53:34,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815126884] [2022-11-23 15:53:34,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 15:53:34,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941793259] [2022-11-23 15:53:34,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:53:34,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:53:34,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:53:34,257 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:53:34,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d1a794-e515-4ed4-83cb-0727b5741260/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 15:53:37,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 15:53:37,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:53:37,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-23 15:53:37,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:53:37,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 94 [2022-11-23 15:53:37,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:37,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:37,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:37,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:37,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:37,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:37,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:38,557 INFO L321 Elim1Store]: treesize reduction 278, result has 8.9 percent of original size [2022-11-23 15:53:38,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 34 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 314 treesize of output 835 [2022-11-23 15:53:43,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:43,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:43,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:43,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:43,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:43,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:43,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:43,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:43,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:43,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:43,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:43,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:44,576 INFO L321 Elim1Store]: treesize reduction 192, result has 7.2 percent of original size [2022-11-23 15:53:44,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 9 select indices, 9 select index equivalence classes, 34 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 8 case distinctions, treesize of input 1048 treesize of output 1350 [2022-11-23 15:53:47,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 104 [2022-11-23 15:53:47,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 378 treesize of output 107 [2022-11-23 15:53:47,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:53:47,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 104 [2022-11-23 15:54:04,165 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:54:04,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 974 treesize of output 958 [2022-11-23 15:54:04,318 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:54:04,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 944 treesize of output 928 [2022-11-23 15:54:06,326 INFO L321 Elim1Store]: treesize reduction 384, result has 28.2 percent of original size [2022-11-23 15:54:06,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 34 case distinctions, treesize of input 1146 treesize of output 1194 [2022-11-23 15:54:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2022-11-23 15:54:12,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:54:12,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941793259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:54:12,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:54:12,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 15:54:12,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085710563] [2022-11-23 15:54:12,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:54:12,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 15:54:12,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:54:12,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 15:54:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=60, Unknown=3, NotChecked=0, Total=90 [2022-11-23 15:54:12,492 INFO L87 Difference]: Start difference. First operand 85976 states and 119639 transitions. Second operand has 10 states, 7 states have (on average 19.142857142857142) internal successors, (134), 9 states have internal predecessors, (134), 5 states have call successors, (53), 4 states have call predecessors, (53), 4 states have return successors, (51), 4 states have call predecessors, (51), 5 states have call successors, (51) [2022-11-23 15:54:14,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:54:21,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:54:23,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:54:26,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:54:28,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:54:30,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:54:33,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:54:36,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:54:38,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:54:40,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:54:42,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:54:44,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:54:46,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 15:55:02,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []