./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs --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 ad99b1dbefac8c1e84a85aaa3f3639700dac2f8335de90a015e2768054e31e7e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:20:56,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:20:56,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:20:56,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:20:56,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:20:56,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:20:56,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:20:56,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:20:56,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:20:56,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:20:56,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:20:56,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:20:56,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:20:56,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:20:56,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:20:56,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:20:56,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:20:56,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:20:56,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:20:56,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:20:56,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:20:56,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:20:56,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:20:56,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:20:56,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:20:56,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:20:56,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:20:56,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:20:56,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:20:56,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:20:56,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:20:56,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:20:56,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:20:56,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:20:56,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:20:56,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:20:56,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:20:56,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:20:56,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:20:56,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:20:56,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:20:56,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:20:56,427 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:20:56,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:20:56,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:20:56,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:20:56,429 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:20:56,429 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:20:56,430 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:20:56,430 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:20:56,430 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:20:56,431 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:20:56,432 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:20:56,432 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:20:56,432 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:20:56,433 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:20:56,433 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:20:56,433 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:20:56,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:20:56,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:20:56,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:20:56,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:20:56,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:20:56,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:20:56,436 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:20:56,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:20:56,436 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:20:56,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:20:56,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:20:56,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:20:56,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:20:56,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:20:56,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:20:56,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:20:56,438 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:20:56,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:20:56,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:20:56,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:20:56,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:20:56,440 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad99b1dbefac8c1e84a85aaa3f3639700dac2f8335de90a015e2768054e31e7e [2021-11-19 13:20:56,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:20:56,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:20:56,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:20:56,698 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:20:56,699 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:20:56,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-19 13:20:56,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/data/504adfece/5b9c2ec62e694a59bb66222e82a95d7f/FLAGa8183fc48 [2021-11-19 13:20:57,861 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:20:57,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-19 13:20:57,936 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/data/504adfece/5b9c2ec62e694a59bb66222e82a95d7f/FLAGa8183fc48 [2021-11-19 13:20:58,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/data/504adfece/5b9c2ec62e694a59bb66222e82a95d7f [2021-11-19 13:20:58,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:20:58,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:20:58,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:20:58,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:20:58,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:20:58,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:20:58" (1/1) ... [2021-11-19 13:20:58,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3ce696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:20:58, skipping insertion in model container [2021-11-19 13:20:58,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:20:58" (1/1) ... [2021-11-19 13:20:58,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:20:58,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:21:00,398 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,566 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,587 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,594 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,595 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,607 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,608 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,644 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,652 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,652 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,710 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,730 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,892 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,899 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,905 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:00,968 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,027 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,355 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,356 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,362 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,362 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,363 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,363 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,364 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,365 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,370 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,541 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,546 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,553 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,556 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,565 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,584 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,585 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,594 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,595 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,642 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:01,652 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:21:02,354 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445039,445052] [2021-11-19 13:21:02,357 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445184,445197] [2021-11-19 13:21:02,376 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:21:02,407 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 13:21:02,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39971f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:02, skipping insertion in model container [2021-11-19 13:21:02,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:21:02,409 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:21:02,411 INFO L158 Benchmark]: Toolchain (without parser) took 4278.03ms. Allocated memory was 96.5MB in the beginning and 207.6MB in the end (delta: 111.1MB). Free memory was 45.7MB in the beginning and 147.5MB in the end (delta: -101.8MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2021-11-19 13:21:02,412 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory was 50.8MB in the beginning and 50.7MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:21:02,413 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4273.25ms. Allocated memory was 96.5MB in the beginning and 207.6MB in the end (delta: 111.1MB). Free memory was 45.4MB in the beginning and 147.5MB in the end (delta: -102.0MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2021-11-19 13:21:02,415 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory was 50.8MB in the beginning and 50.7MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4273.25ms. Allocated memory was 96.5MB in the beginning and 207.6MB in the end (delta: 111.1MB). Free memory was 45.4MB in the beginning and 147.5MB in the end (delta: -102.0MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7443]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs --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 ad99b1dbefac8c1e84a85aaa3f3639700dac2f8335de90a015e2768054e31e7e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:21:04,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:21:04,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:21:04,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:21:04,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:21:04,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:21:04,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:21:04,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:21:04,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:21:04,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:21:04,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:21:04,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:21:04,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:21:04,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:21:04,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:21:04,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:21:04,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:21:04,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:21:04,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:21:04,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:21:04,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:21:04,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:21:04,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:21:04,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:21:04,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:21:04,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:21:04,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:21:04,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:21:04,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:21:04,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:21:04,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:21:04,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:21:04,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:21:04,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:21:04,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:21:04,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:21:04,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:21:04,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:21:04,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:21:04,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:21:04,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:21:04,858 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:21:04,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:21:04,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:21:04,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:21:04,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:21:04,909 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:21:04,909 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:21:04,910 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:21:04,910 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:21:04,910 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:21:04,910 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:21:04,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:21:04,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:21:04,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:21:04,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:21:04,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:21:04,914 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:21:04,914 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:21:04,915 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:21:04,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:21:04,915 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:21:04,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:21:04,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:21:04,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:21:04,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:21:04,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:21:04,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:21:04,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:21:04,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:21:04,917 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:21:04,917 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:21:04,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:21:04,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:21:04,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:21:04,918 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad99b1dbefac8c1e84a85aaa3f3639700dac2f8335de90a015e2768054e31e7e [2021-11-19 13:21:05,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:21:05,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:21:05,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:21:05,376 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:21:05,377 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:21:05,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-19 13:21:05,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/data/680e53f8a/4736d7f6ac3b4fa482cacd51d5100435/FLAGdb293fab9 [2021-11-19 13:21:06,498 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:21:06,499 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-19 13:21:06,561 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/data/680e53f8a/4736d7f6ac3b4fa482cacd51d5100435/FLAGdb293fab9 [2021-11-19 13:21:06,808 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/data/680e53f8a/4736d7f6ac3b4fa482cacd51d5100435 [2021-11-19 13:21:06,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:21:06,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:21:06,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:21:06,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:21:06,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:21:06,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:21:06" (1/1) ... [2021-11-19 13:21:06,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37bebd22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:06, skipping insertion in model container [2021-11-19 13:21:06,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:21:06" (1/1) ... [2021-11-19 13:21:06,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:21:07,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:21:11,250 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445039,445052] [2021-11-19 13:21:11,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445184,445197] [2021-11-19 13:21:11,304 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:21:11,368 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:21:11,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:21:12,045 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445039,445052] [2021-11-19 13:21:12,045 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445184,445197] [2021-11-19 13:21:12,050 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:21:12,064 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:21:12,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445039,445052] [2021-11-19 13:21:12,576 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445184,445197] [2021-11-19 13:21:12,581 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:21:12,841 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:21:12,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:12 WrapperNode [2021-11-19 13:21:12,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:21:12,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:21:12,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:21:12,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:21:12,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:12" (1/1) ... [2021-11-19 13:21:12,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:12" (1/1) ... [2021-11-19 13:21:13,242 INFO L137 Inliner]: procedures = 547, calls = 2779, calls flagged for inlining = 243, calls inlined = 223, statements flattened = 6577 [2021-11-19 13:21:13,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:21:13,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:21:13,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:21:13,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:21:13,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:12" (1/1) ... [2021-11-19 13:21:13,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:12" (1/1) ... [2021-11-19 13:21:13,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:12" (1/1) ... [2021-11-19 13:21:13,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:12" (1/1) ... [2021-11-19 13:21:13,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:12" (1/1) ... [2021-11-19 13:21:13,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:12" (1/1) ... [2021-11-19 13:21:13,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:12" (1/1) ... [2021-11-19 13:21:13,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:21:13,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:21:13,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:21:13,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:21:13,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:12" (1/1) ... [2021-11-19 13:21:13,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:21:13,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:21:13,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:21:13,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:21:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_per_engine_handler_adjust [2021-11-19 13:21:13,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_per_engine_handler_adjust [2021-11-19 13:21:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 13:21:13,781 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 13:21:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2021-11-19 13:21:13,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2021-11-19 13:21:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_core_destroy [2021-11-19 13:21:13,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_core_destroy [2021-11-19 13:21:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 13:21:13,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 13:21:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-19 13:21:13,782 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-19 13:21:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_watermark_intr_disable [2021-11-19 13:21:13,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_watermark_intr_disable [2021-11-19 13:21:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 13:21:13,783 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 13:21:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_completed_recv_next [2021-11-19 13:21:13,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_completed_recv_next [2021-11-19 13:21:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-19 13:21:13,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-19 13:21:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_completed_send_next [2021-11-19 13:21:13,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_completed_send_next [2021-11-19 13:21:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 13:21:13,784 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 13:21:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_ce_deinit [2021-11-19 13:21:13,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_ce_deinit [2021-11-19 13:21:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_start [2021-11-19 13:21:13,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_start [2021-11-19 13:21:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 13:21:13,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 13:21:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_resume [2021-11-19 13:21:13,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_resume [2021-11-19 13:21:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 13:21:13,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 13:21:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_read32 [2021-11-19 13:21:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_read32 [2021-11-19 13:21:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-19 13:21:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-19 13:21:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 13:21:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 13:21:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ath10k_pci_exit_13_2 [2021-11-19 13:21:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ath10k_pci_exit_13_2 [2021-11-19 13:21:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2021-11-19 13:21:13,788 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2021-11-19 13:21:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:21:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-19 13:21:13,788 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-19 13:21:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:21:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:21:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_write_mem [2021-11-19 13:21:13,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_write_mem [2021-11-19 13:21:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 13:21:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-19 13:21:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-19 13:21:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-19 13:21:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-19 13:21:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_base_address [2021-11-19 13:21:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_base_address [2021-11-19 13:21:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_write_access [2021-11-19 13:21:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_write_access [2021-11-19 13:21:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-19 13:21:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-19 13:21:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 13:21:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 13:21:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-19 13:21:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-19 13:21:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 13:21:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 13:21:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 13:21:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 13:21:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_84 [2021-11-19 13:21:13,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_84 [2021-11-19 13:21:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-19 13:21:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-19 13:21:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 13:21:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 13:21:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_86 [2021-11-19 13:21:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_86 [2021-11-19 13:21:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_88 [2021-11-19 13:21:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_88 [2021-11-19 13:21:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 13:21:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 13:21:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 13:21:13,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 13:21:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_wake [2021-11-19 13:21:13,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_wake [2021-11-19 13:21:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 13:21:13,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 13:21:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-19 13:21:13,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-19 13:21:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_copy_complete_intr_disable [2021-11-19 13:21:13,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_copy_complete_intr_disable [2021-11-19 13:21:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure get_free_compl [2021-11-19 13:21:13,800 INFO L138 BoogieDeclarations]: Found implementation of procedure get_free_compl [2021-11-19 13:21:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_process_ce [2021-11-19 13:21:13,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_process_ce [2021-11-19 13:21:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_reg_read32 [2021-11-19 13:21:13,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_reg_read32 [2021-11-19 13:21:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-19 13:21:13,800 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-19 13:21:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 13:21:13,800 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 13:21:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 13:21:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 13:21:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_do_pci_wake [2021-11-19 13:21:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_do_pci_wake [2021-11-19 13:21:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_cleanup_ce [2021-11-19 13:21:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_cleanup_ce [2021-11-19 13:21:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_disable_interrupts [2021-11-19 13:21:13,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_disable_interrupts [2021-11-19 13:21:13,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:21:13,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 13:21:13,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 13:21:13,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 13:21:13,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 13:21:13,808 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_sleep [2021-11-19 13:21:13,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_sleep [2021-11-19 13:21:13,809 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-19 13:21:13,809 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-19 13:21:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-19 13:21:13,814 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-19 13:21:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:21:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 13:21:13,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 13:21:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 13:21:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 13:21:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_request_early_irq [2021-11-19 13:21:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_request_early_irq [2021-11-19 13:21:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:21:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-19 13:21:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-19 13:21:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 13:21:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 13:21:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:21:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:21:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 13:21:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_reg_write32 [2021-11-19 13:21:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_reg_write32 [2021-11-19 13:21:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-19 13:21:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-19 13:21:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-19 13:21:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-19 13:21:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-19 13:21:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-19 13:21:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-19 13:21:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-19 13:21:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_get_free_queue_number [2021-11-19 13:21:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_get_free_queue_number [2021-11-19 13:21:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_stop [2021-11-19 13:21:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_stop [2021-11-19 13:21:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_recv_buf_enqueue [2021-11-19 13:21:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_recv_buf_enqueue [2021-11-19 13:21:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_priv [2021-11-19 13:21:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_priv [2021-11-19 13:21:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 13:21:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 13:21:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 13:21:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 13:21:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 13:21:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_deinit [2021-11-19 13:21:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_deinit [2021-11-19 13:21:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure __roundup_pow_of_two [2021-11-19 13:21:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __roundup_pow_of_two [2021-11-19 13:21:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:21:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:21:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_rx_pipe_cleanup [2021-11-19 13:21:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_rx_pipe_cleanup [2021-11-19 13:21:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_revoke_recv_next [2021-11-19 13:21:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_revoke_recv_next [2021-11-19 13:21:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_read_access [2021-11-19 13:21:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_read_access [2021-11-19 13:21:13,821 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-19 13:21:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-19 13:21:13,821 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_stop_ce [2021-11-19 13:21:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_stop_ce [2021-11-19 13:21:13,821 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_device_reset [2021-11-19 13:21:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_device_reset [2021-11-19 13:21:13,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:21:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-19 13:21:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-19 13:21:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:21:13,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:21:13,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 13:21:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 13:21:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 13:21:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 13:21:13,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 13:21:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_post_rx_pipe [2021-11-19 13:21:13,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_post_rx_pipe [2021-11-19 13:21:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_free_irq [2021-11-19 13:21:13,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_free_irq [2021-11-19 13:21:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-19 13:21:13,826 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-19 13:21:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2021-11-19 13:21:13,826 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2021-11-19 13:21:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_power_down [2021-11-19 13:21:13,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_power_down [2021-11-19 13:21:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 13:21:13,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 13:21:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_per_engine_service [2021-11-19 13:21:13,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_per_engine_service [2021-11-19 13:21:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-19 13:21:13,827 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-19 13:21:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:21:13,828 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:21:13,828 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_send [2021-11-19 13:21:13,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_send [2021-11-19 13:21:13,828 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_suspend [2021-11-19 13:21:13,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_suspend [2021-11-19 13:21:13,828 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-19 13:21:13,828 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-19 13:21:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-19 13:21:13,829 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-19 13:21:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-19 13:21:13,829 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-19 13:21:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:21:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-19 13:21:13,829 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-19 13:21:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_src_ring_read_index_get [2021-11-19 13:21:13,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_src_ring_read_index_get [2021-11-19 13:21:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure ATH10K_SKB_CB [2021-11-19 13:21:13,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ATH10K_SKB_CB [2021-11-19 13:21:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_free_early_irq [2021-11-19 13:21:13,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_free_early_irq [2021-11-19 13:21:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:21:13,830 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_do_pci_sleep [2021-11-19 13:21:13,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_do_pci_sleep [2021-11-19 13:21:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_kill_tasklet [2021-11-19 13:21:13,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_kill_tasklet [2021-11-19 13:21:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:21:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:21:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 13:21:13,831 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~TO~C_INT [2021-11-19 13:21:13,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~TO~C_INT [2021-11-19 13:21:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:21:13,832 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_remove [2021-11-19 13:21:13,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_remove [2021-11-19 13:21:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:21:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_disable_and_clear_legacy_irq [2021-11-19 13:21:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_disable_and_clear_legacy_irq [2021-11-19 13:21:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-19 13:21:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-19 13:21:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-19 13:21:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-19 13:21:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_irq_pending [2021-11-19 13:21:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_irq_pending [2021-11-19 13:21:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-19 13:21:13,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-19 13:21:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 13:21:13,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 13:21:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-19 13:21:13,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-19 13:21:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 13:21:13,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 13:21:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-19 13:21:13,843 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-19 13:21:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-19 13:21:13,844 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-19 13:21:13,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_87 [2021-11-19 13:21:13,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_87 [2021-11-19 13:21:13,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_85 [2021-11-19 13:21:13,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_85 [2021-11-19 13:21:13,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_83 [2021-11-19 13:21:13,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_83 [2021-11-19 13:21:13,844 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_write32 [2021-11-19 13:21:13,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_write32 [2021-11-19 13:21:13,845 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_map_service_to_pipe [2021-11-19 13:21:13,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_map_service_to_pipe [2021-11-19 13:21:13,845 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_msi_block [2021-11-19 13:21:13,845 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_msi_block [2021-11-19 13:21:13,845 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 13:21:13,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 13:21:13,846 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 13:21:13,846 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 13:21:13,846 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 13:21:13,846 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 13:21:13,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 13:21:13,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_3_6 [2021-11-19 13:21:13,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_3_6 [2021-11-19 13:21:13,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 13:21:13,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 13:21:13,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 13:21:13,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 13:21:13,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 13:21:13,847 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-19 13:21:13,847 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-19 13:21:13,847 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_dbg_dump [2021-11-19 13:21:13,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_dbg_dump [2021-11-19 13:21:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_2_6 [2021-11-19 13:21:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_2_6 [2021-11-19 13:21:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_power_up [2021-11-19 13:21:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_power_up [2021-11-19 13:21:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 13:21:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 13:21:13,848 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_deinit_irq [2021-11-19 13:21:13,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_deinit_irq [2021-11-19 13:21:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_master [2021-11-19 13:21:13,849 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_master [2021-11-19 13:21:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-19 13:21:13,849 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-19 13:21:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure host_interest_item_address [2021-11-19 13:21:13,849 INFO L138 BoogieDeclarations]: Found implementation of procedure host_interest_item_address [2021-11-19 13:21:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_read_mem [2021-11-19 13:21:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_read_mem [2021-11-19 13:21:13,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2021-11-19 13:21:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2021-11-19 13:21:13,850 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-19 13:21:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-19 13:21:13,850 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_cancel_send_next [2021-11-19 13:21:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_cancel_send_next [2021-11-19 13:21:13,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 13:21:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 13:21:13,851 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_engine_int_status_clear [2021-11-19 13:21:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_engine_int_status_clear [2021-11-19 13:21:14,997 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:21:15,065 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:21:15,370 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 13:21:50,371 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 13:21:51,082 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:21:51,104 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:21:51,104 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-19 13:21:51,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:21:51 BoogieIcfgContainer [2021-11-19 13:21:51,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:21:51,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:21:51,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:21:51,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:21:51,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:21:06" (1/3) ... [2021-11-19 13:21:51,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410401d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:21:51, skipping insertion in model container [2021-11-19 13:21:51,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:21:12" (2/3) ... [2021-11-19 13:21:51,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410401d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:21:51, skipping insertion in model container [2021-11-19 13:21:51,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:21:51" (3/3) ... [2021-11-19 13:21:51,118 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-19 13:21:51,123 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:21:51,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:21:51,186 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:21:51,192 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:21:51,192 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:21:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 2564 states, 1685 states have (on average 1.2783382789317508) internal successors, (2154), 1732 states have internal predecessors, (2154), 741 states have call successors, (741), 142 states have call predecessors, (741), 141 states have return successors, (732), 726 states have call predecessors, (732), 732 states have call successors, (732) [2021-11-19 13:21:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-19 13:21:51,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:51,295 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:51,296 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:21:51,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:51,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1573750035, now seen corresponding path program 1 times [2021-11-19 13:21:51,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:51,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064242968] [2021-11-19 13:21:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:51,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:51,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:51,326 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:51,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:21:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:53,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:21:53,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:54,047 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2021-11-19 13:21:54,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-19 13:21:54,707 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:54,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064242968] [2021-11-19 13:21:54,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064242968] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:54,708 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:54,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:21:54,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174307271] [2021-11-19 13:21:54,710 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:54,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:21:54,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:54,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:21:54,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:21:54,757 INFO L87 Difference]: Start difference. First operand has 2564 states, 1685 states have (on average 1.2783382789317508) internal successors, (2154), 1732 states have internal predecessors, (2154), 741 states have call successors, (741), 142 states have call predecessors, (741), 141 states have return successors, (732), 726 states have call predecessors, (732), 732 states have call successors, (732) Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-19 13:22:03,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:03,933 INFO L93 Difference]: Finished difference Result 9699 states and 13910 transitions. [2021-11-19 13:22:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:22:03,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 210 [2021-11-19 13:22:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:04,030 INFO L225 Difference]: With dead ends: 9699 [2021-11-19 13:22:04,031 INFO L226 Difference]: Without dead ends: 7062 [2021-11-19 13:22:04,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:04,068 INFO L933 BasicCegarLoop]: 5057 mSDtfsCounter, 6641 mSDsluCounter, 6431 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6641 SdHoareTripleChecker+Valid, 11488 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:04,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6641 Valid, 11488 Invalid, 1559 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2021-11-19 13:22:04,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7062 states. [2021-11-19 13:22:04,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7062 to 7056. [2021-11-19 13:22:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7056 states, 4663 states have (on average 1.2721423975981128) internal successors, (5932), 4773 states have internal predecessors, (5932), 1985 states have call successors, (1985), 407 states have call predecessors, (1985), 407 states have return successors, (1985), 1965 states have call predecessors, (1985), 1985 states have call successors, (1985) [2021-11-19 13:22:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7056 states to 7056 states and 9902 transitions. [2021-11-19 13:22:04,709 INFO L78 Accepts]: Start accepts. Automaton has 7056 states and 9902 transitions. Word has length 210 [2021-11-19 13:22:04,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:04,714 INFO L470 AbstractCegarLoop]: Abstraction has 7056 states and 9902 transitions. [2021-11-19 13:22:04,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-19 13:22:04,715 INFO L276 IsEmpty]: Start isEmpty. Operand 7056 states and 9902 transitions. [2021-11-19 13:22:04,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-11-19 13:22:04,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:04,743 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 3, 3, 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] [2021-11-19 13:22:04,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 13:22:04,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:04,958 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:04,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:04,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2037188258, now seen corresponding path program 1 times [2021-11-19 13:22:04,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:04,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416829655] [2021-11-19 13:22:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:04,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:04,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:04,970 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:04,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:22:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:07,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:22:07,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2021-11-19 13:22:07,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2021-11-19 13:22:08,668 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:08,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416829655] [2021-11-19 13:22:08,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416829655] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:08,668 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:08,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:22:08,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821501201] [2021-11-19 13:22:08,668 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:08,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:22:08,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:08,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:22:08,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:08,672 INFO L87 Difference]: Start difference. First operand 7056 states and 9902 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) [2021-11-19 13:22:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:16,723 INFO L93 Difference]: Finished difference Result 20189 states and 28172 transitions. [2021-11-19 13:22:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:22:16,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) Word has length 288 [2021-11-19 13:22:16,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:16,861 INFO L225 Difference]: With dead ends: 20189 [2021-11-19 13:22:16,861 INFO L226 Difference]: Without dead ends: 13168 [2021-11-19 13:22:16,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:22:16,911 INFO L933 BasicCegarLoop]: 6371 mSDtfsCounter, 6291 mSDsluCounter, 6077 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6291 SdHoareTripleChecker+Valid, 12448 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:16,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6291 Valid, 12448 Invalid, 1551 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-11-19 13:22:16,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13168 states. [2021-11-19 13:22:17,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13168 to 13152. [2021-11-19 13:22:17,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13152 states, 8767 states have (on average 1.2721569522071403) internal successors, (11153), 8989 states have internal predecessors, (11153), 3554 states have call successors, (3554), 830 states have call predecessors, (3554), 830 states have return successors, (3554), 3506 states have call predecessors, (3554), 3554 states have call successors, (3554) [2021-11-19 13:22:17,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13152 states to 13152 states and 18261 transitions. [2021-11-19 13:22:17,877 INFO L78 Accepts]: Start accepts. Automaton has 13152 states and 18261 transitions. Word has length 288 [2021-11-19 13:22:17,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:17,879 INFO L470 AbstractCegarLoop]: Abstraction has 13152 states and 18261 transitions. [2021-11-19 13:22:17,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) [2021-11-19 13:22:17,879 INFO L276 IsEmpty]: Start isEmpty. Operand 13152 states and 18261 transitions. [2021-11-19 13:22:17,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-19 13:22:17,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:17,907 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:17,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:18,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:18,133 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:18,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1202307122, now seen corresponding path program 1 times [2021-11-19 13:22:18,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:18,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299491525] [2021-11-19 13:22:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:18,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:18,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:18,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:18,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:22:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:19,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:22:19,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:22:20,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:22:21,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:21,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299491525] [2021-11-19 13:22:21,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299491525] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:21,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [894372451] [2021-11-19 13:22:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:21,726 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:21,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:22:21,730 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:22:21,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-19 13:22:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:23,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:22:23,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:22:25,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:22:26,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [894372451] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:26,407 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:22:26,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:22:26,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645090084] [2021-11-19 13:22:26,408 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:26,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:22:26,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:26,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:22:26,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:22:26,410 INFO L87 Difference]: Start difference. First operand 13152 states and 18261 transitions. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:22:33,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:33,591 INFO L93 Difference]: Finished difference Result 26269 states and 36592 transitions. [2021-11-19 13:22:33,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:22:33,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 296 [2021-11-19 13:22:33,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:33,700 INFO L225 Difference]: With dead ends: 26269 [2021-11-19 13:22:33,700 INFO L226 Difference]: Without dead ends: 13152 [2021-11-19 13:22:33,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 1170 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:22:33,782 INFO L933 BasicCegarLoop]: 3513 mSDtfsCounter, 5395 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 1385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5395 SdHoareTripleChecker+Valid, 5615 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1385 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:33,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5395 Valid, 5615 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1385 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-19 13:22:33,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13152 states. [2021-11-19 13:22:34,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13152 to 13152. [2021-11-19 13:22:34,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13152 states, 8767 states have (on average 1.2712444393749287) internal successors, (11145), 8989 states have internal predecessors, (11145), 3554 states have call successors, (3554), 830 states have call predecessors, (3554), 830 states have return successors, (3554), 3506 states have call predecessors, (3554), 3554 states have call successors, (3554) [2021-11-19 13:22:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13152 states to 13152 states and 18253 transitions. [2021-11-19 13:22:34,725 INFO L78 Accepts]: Start accepts. Automaton has 13152 states and 18253 transitions. Word has length 296 [2021-11-19 13:22:34,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:34,726 INFO L470 AbstractCegarLoop]: Abstraction has 13152 states and 18253 transitions. [2021-11-19 13:22:34,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:22:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 13152 states and 18253 transitions. [2021-11-19 13:22:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-19 13:22:34,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:34,750 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:34,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:35,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 13:22:35,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:35,172 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:35,172 INFO L85 PathProgramCache]: Analyzing trace with hash -511265466, now seen corresponding path program 1 times [2021-11-19 13:22:35,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:35,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645155153] [2021-11-19 13:22:35,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:35,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:35,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:35,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:35,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:22:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:36,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:22:36,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:22:37,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:22:38,698 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:38,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645155153] [2021-11-19 13:22:38,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645155153] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:38,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [395869357] [2021-11-19 13:22:38,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:38,699 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:38,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:22:38,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:22:38,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 13:22:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:39,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:22:39,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:22:41,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:22:42,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [395869357] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:42,851 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:22:42,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:22:42,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920276882] [2021-11-19 13:22:42,851 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:42,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:22:42,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:42,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:22:42,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:22:42,853 INFO L87 Difference]: Start difference. First operand 13152 states and 18253 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:22:49,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:49,641 INFO L93 Difference]: Finished difference Result 26269 states and 36576 transitions. [2021-11-19 13:22:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:22:49,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 297 [2021-11-19 13:22:49,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:49,713 INFO L225 Difference]: With dead ends: 26269 [2021-11-19 13:22:49,714 INFO L226 Difference]: Without dead ends: 13152 [2021-11-19 13:22:49,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1174 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:22:49,762 INFO L933 BasicCegarLoop]: 3512 mSDtfsCounter, 3381 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3381 SdHoareTripleChecker+Valid, 5613 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:49,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3381 Valid, 5613 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-19 13:22:49,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13152 states. [2021-11-19 13:22:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13152 to 13152. [2021-11-19 13:22:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13152 states, 8767 states have (on average 1.270331926542717) internal successors, (11137), 8989 states have internal predecessors, (11137), 3554 states have call successors, (3554), 830 states have call predecessors, (3554), 830 states have return successors, (3554), 3506 states have call predecessors, (3554), 3554 states have call successors, (3554) [2021-11-19 13:22:50,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13152 states to 13152 states and 18245 transitions. [2021-11-19 13:22:50,746 INFO L78 Accepts]: Start accepts. Automaton has 13152 states and 18245 transitions. Word has length 297 [2021-11-19 13:22:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:50,749 INFO L470 AbstractCegarLoop]: Abstraction has 13152 states and 18245 transitions. [2021-11-19 13:22:50,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:22:50,749 INFO L276 IsEmpty]: Start isEmpty. Operand 13152 states and 18245 transitions. [2021-11-19 13:22:50,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-19 13:22:50,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:50,771 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:50,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:51,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:51,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:51,195 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:22:51,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:51,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1977891538, now seen corresponding path program 1 times [2021-11-19 13:22:51,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:51,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164093899] [2021-11-19 13:22:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:51,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:51,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:51,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:51,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:22:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:52,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:22:52,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:22:53,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:54,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:22:54,492 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:54,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164093899] [2021-11-19 13:22:54,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164093899] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:54,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [829245168] [2021-11-19 13:22:54,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:54,493 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:54,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:22:54,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:22:54,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-19 13:22:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:55,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:22:55,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:22:57,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:22:58,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [829245168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:58,696 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:22:58,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:22:58,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524545590] [2021-11-19 13:22:58,697 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:58,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:22:58,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:58,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:22:58,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:22:58,698 INFO L87 Difference]: Start difference. First operand 13152 states and 18245 transitions. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:23:05,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:05,218 INFO L93 Difference]: Finished difference Result 26269 states and 36560 transitions. [2021-11-19 13:23:05,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:23:05,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 298 [2021-11-19 13:23:05,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:05,291 INFO L225 Difference]: With dead ends: 26269 [2021-11-19 13:23:05,291 INFO L226 Difference]: Without dead ends: 13152 [2021-11-19 13:23:05,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1178 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:23:05,345 INFO L933 BasicCegarLoop]: 3511 mSDtfsCounter, 3380 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3380 SdHoareTripleChecker+Valid, 5611 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:05,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3380 Valid, 5611 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-19 13:23:05,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13152 states. [2021-11-19 13:23:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13152 to 13152. [2021-11-19 13:23:06,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13152 states, 8767 states have (on average 1.2694194137105053) internal successors, (11129), 8989 states have internal predecessors, (11129), 3554 states have call successors, (3554), 830 states have call predecessors, (3554), 830 states have return successors, (3554), 3506 states have call predecessors, (3554), 3554 states have call successors, (3554) [2021-11-19 13:23:06,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13152 states to 13152 states and 18237 transitions. [2021-11-19 13:23:06,281 INFO L78 Accepts]: Start accepts. Automaton has 13152 states and 18237 transitions. Word has length 298 [2021-11-19 13:23:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:06,282 INFO L470 AbstractCegarLoop]: Abstraction has 13152 states and 18237 transitions. [2021-11-19 13:23:06,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:23:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 13152 states and 18237 transitions. [2021-11-19 13:23:06,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-11-19 13:23:06,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:06,306 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:06,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:06,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-19 13:23:06,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:06,725 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:23:06,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:06,725 INFO L85 PathProgramCache]: Analyzing trace with hash -84142910, now seen corresponding path program 1 times [2021-11-19 13:23:06,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:06,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257175863] [2021-11-19 13:23:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:06,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:06,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:06,728 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:06,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:23:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:08,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1952 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:23:08,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:23:09,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:23:10,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:10,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257175863] [2021-11-19 13:23:10,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257175863] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:23:10,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [955836870] [2021-11-19 13:23:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:10,019 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:10,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:23:10,020 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:23:10,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 13:23:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:11,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 1952 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:23:11,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:23:13,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:14,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:23:14,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [955836870] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:14,693 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:23:14,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:23:14,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245040292] [2021-11-19 13:23:14,694 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:14,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:23:14,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:23:14,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:23:14,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:23:14,695 INFO L87 Difference]: Start difference. First operand 13152 states and 18237 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:23:21,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:21,791 INFO L93 Difference]: Finished difference Result 26925 states and 37268 transitions. [2021-11-19 13:23:21,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:23:21,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 299 [2021-11-19 13:23:21,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:21,874 INFO L225 Difference]: With dead ends: 26925 [2021-11-19 13:23:21,874 INFO L226 Difference]: Without dead ends: 13808 [2021-11-19 13:23:21,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1182 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:23:21,928 INFO L933 BasicCegarLoop]: 3634 mSDtfsCounter, 3501 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 5972 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:21,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3501 Valid, 5972 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1580 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-19 13:23:22,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13808 states. [2021-11-19 13:23:22,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13808 to 13808. [2021-11-19 13:23:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13808 states, 9183 states have (on average 1.2613524991832734) internal successors, (11583), 9422 states have internal predecessors, (11583), 3685 states have call successors, (3685), 939 states have call predecessors, (3685), 939 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-19 13:23:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13808 states to 13808 states and 18953 transitions. [2021-11-19 13:23:22,932 INFO L78 Accepts]: Start accepts. Automaton has 13808 states and 18953 transitions. Word has length 299 [2021-11-19 13:23:22,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:22,933 INFO L470 AbstractCegarLoop]: Abstraction has 13808 states and 18953 transitions. [2021-11-19 13:23:22,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:23:22,933 INFO L276 IsEmpty]: Start isEmpty. Operand 13808 states and 18953 transitions. [2021-11-19 13:23:22,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-19 13:23:22,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:22,954 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:23,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:23,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:23,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:23,377 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:23:23,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:23,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1392960982, now seen corresponding path program 1 times [2021-11-19 13:23:23,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:23,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724821972] [2021-11-19 13:23:23,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:23,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:23,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:23,380 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:23,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:23:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:24,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1953 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:23:25,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:23:25,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:23:26,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:26,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724821972] [2021-11-19 13:23:26,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724821972] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:23:26,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1123678307] [2021-11-19 13:23:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:26,642 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:26,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:23:26,643 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:23:26,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 13:23:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:27,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1953 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:23:27,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:23:29,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:23:31,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1123678307] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:31,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:23:31,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:23:31,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807472839] [2021-11-19 13:23:31,086 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:31,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:23:31,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:23:31,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:23:31,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:23:31,088 INFO L87 Difference]: Start difference. First operand 13808 states and 18953 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:23:38,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:38,374 INFO L93 Difference]: Finished difference Result 27756 states and 38111 transitions. [2021-11-19 13:23:38,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:23:38,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 300 [2021-11-19 13:23:38,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:38,450 INFO L225 Difference]: With dead ends: 27756 [2021-11-19 13:23:38,451 INFO L226 Difference]: Without dead ends: 13983 [2021-11-19 13:23:38,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1186 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:23:38,504 INFO L933 BasicCegarLoop]: 3536 mSDtfsCounter, 5383 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 1348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5383 SdHoareTripleChecker+Valid, 5659 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1348 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:38,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5383 Valid, 5659 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1348 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-19 13:23:38,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13983 states. [2021-11-19 13:23:39,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13983 to 13983. [2021-11-19 13:23:39,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13983 states, 9313 states have (on average 1.2573821539783099) internal successors, (11710), 9552 states have internal predecessors, (11710), 3685 states have call successors, (3685), 984 states have call predecessors, (3685), 984 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-19 13:23:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13983 states to 13983 states and 19080 transitions. [2021-11-19 13:23:39,585 INFO L78 Accepts]: Start accepts. Automaton has 13983 states and 19080 transitions. Word has length 300 [2021-11-19 13:23:39,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:39,588 INFO L470 AbstractCegarLoop]: Abstraction has 13983 states and 19080 transitions. [2021-11-19 13:23:39,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:23:39,588 INFO L276 IsEmpty]: Start isEmpty. Operand 13983 states and 19080 transitions. [2021-11-19 13:23:39,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-11-19 13:23:39,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:39,609 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:39,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:39,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:40,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:40,025 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:23:40,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:40,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1097868350, now seen corresponding path program 1 times [2021-11-19 13:23:40,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:40,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771964136] [2021-11-19 13:23:40,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:40,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:40,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:40,028 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:40,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:23:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:41,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1954 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:23:41,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:23:42,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:23:43,294 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:43,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771964136] [2021-11-19 13:23:43,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771964136] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:23:43,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1082114960] [2021-11-19 13:23:43,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:43,294 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:43,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:23:43,318 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:23:43,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-19 13:23:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:44,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 1954 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:23:44,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:23:46,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:23:47,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1082114960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:47,262 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:23:47,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:23:47,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724214258] [2021-11-19 13:23:47,263 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:47,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:23:47,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:23:47,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:23:47,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:23:47,264 INFO L87 Difference]: Start difference. First operand 13983 states and 19080 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:23:54,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:54,082 INFO L93 Difference]: Finished difference Result 27931 states and 38230 transitions. [2021-11-19 13:23:54,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:23:54,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 301 [2021-11-19 13:23:54,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:54,165 INFO L225 Difference]: With dead ends: 27931 [2021-11-19 13:23:54,165 INFO L226 Difference]: Without dead ends: 13983 [2021-11-19 13:23:54,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 1190 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:23:54,226 INFO L933 BasicCegarLoop]: 3508 mSDtfsCounter, 5380 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 1385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5380 SdHoareTripleChecker+Valid, 5605 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1385 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:54,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5380 Valid, 5605 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1385 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-19 13:23:54,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13983 states. [2021-11-19 13:23:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13983 to 13983. [2021-11-19 13:23:55,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13983 states, 9313 states have (on average 1.2565231396971974) internal successors, (11702), 9552 states have internal predecessors, (11702), 3685 states have call successors, (3685), 984 states have call predecessors, (3685), 984 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-19 13:23:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13983 states to 13983 states and 19072 transitions. [2021-11-19 13:23:55,247 INFO L78 Accepts]: Start accepts. Automaton has 13983 states and 19072 transitions. Word has length 301 [2021-11-19 13:23:55,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:55,248 INFO L470 AbstractCegarLoop]: Abstraction has 13983 states and 19072 transitions. [2021-11-19 13:23:55,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:23:55,248 INFO L276 IsEmpty]: Start isEmpty. Operand 13983 states and 19072 transitions. [2021-11-19 13:23:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-19 13:23:55,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:55,267 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:55,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:55,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-19 13:23:55,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:55,689 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:23:55,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:55,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1118682918, now seen corresponding path program 1 times [2021-11-19 13:23:55,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:55,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81445408] [2021-11-19 13:23:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:55,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:55,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:55,692 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:55,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:23:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:57,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1955 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:23:57,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:23:58,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:23:58,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:58,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81445408] [2021-11-19 13:23:58,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81445408] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:23:58,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1829904945] [2021-11-19 13:23:58,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:58,905 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:58,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:23:58,905 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:23:58,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 13:24:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:00,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1955 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:24:00,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:24:02,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:24:03,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1829904945] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:24:03,260 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:24:03,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:24:03,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710884074] [2021-11-19 13:24:03,261 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:24:03,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:24:03,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:24:03,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:24:03,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:24:03,263 INFO L87 Difference]: Start difference. First operand 13983 states and 19072 transitions. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:24:10,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:24:10,244 INFO L93 Difference]: Finished difference Result 27931 states and 38214 transitions. [2021-11-19 13:24:10,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:24:10,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 302 [2021-11-19 13:24:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:24:10,329 INFO L225 Difference]: With dead ends: 27931 [2021-11-19 13:24:10,329 INFO L226 Difference]: Without dead ends: 13983 [2021-11-19 13:24:10,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1204 GetRequests, 1194 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:24:10,388 INFO L933 BasicCegarLoop]: 3507 mSDtfsCounter, 3376 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3376 SdHoareTripleChecker+Valid, 5603 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:24:10,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3376 Valid, 5603 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-19 13:24:10,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13983 states. [2021-11-19 13:24:11,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13983 to 13983. [2021-11-19 13:24:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13983 states, 9313 states have (on average 1.255664125416085) internal successors, (11694), 9552 states have internal predecessors, (11694), 3685 states have call successors, (3685), 984 states have call predecessors, (3685), 984 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-19 13:24:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13983 states to 13983 states and 19064 transitions. [2021-11-19 13:24:11,830 INFO L78 Accepts]: Start accepts. Automaton has 13983 states and 19064 transitions. Word has length 302 [2021-11-19 13:24:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:24:11,831 INFO L470 AbstractCegarLoop]: Abstraction has 13983 states and 19064 transitions. [2021-11-19 13:24:11,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:24:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 13983 states and 19064 transitions. [2021-11-19 13:24:11,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-11-19 13:24:11,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:11,847 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:24:11,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:12,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:12,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:24:12,248 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:24:12,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:12,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1878451130, now seen corresponding path program 1 times [2021-11-19 13:24:12,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:24:12,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338590797] [2021-11-19 13:24:12,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:12,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:24:12,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:24:12,252 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:24:12,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 13:24:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:13,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:24:13,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:24:14,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:24:15,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:24:15,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338590797] [2021-11-19 13:24:15,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338590797] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:24:15,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [511487883] [2021-11-19 13:24:15,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:15,589 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:24:15,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:24:15,598 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:24:15,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 13:24:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:16,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:24:16,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:19,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:24:19,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:24:20,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [511487883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:24:20,448 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:24:20,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:24:20,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614033095] [2021-11-19 13:24:20,449 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:24:20,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:24:20,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:24:20,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:24:20,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:24:20,451 INFO L87 Difference]: Start difference. First operand 13983 states and 19064 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:24:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:24:27,708 INFO L93 Difference]: Finished difference Result 27931 states and 38198 transitions. [2021-11-19 13:24:27,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:24:27,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 303 [2021-11-19 13:24:27,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:24:27,786 INFO L225 Difference]: With dead ends: 27931 [2021-11-19 13:24:27,786 INFO L226 Difference]: Without dead ends: 13983 [2021-11-19 13:24:27,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1208 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:24:27,849 INFO L933 BasicCegarLoop]: 3506 mSDtfsCounter, 3375 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3375 SdHoareTripleChecker+Valid, 5601 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:24:27,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3375 Valid, 5601 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-19 13:24:27,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13983 states. [2021-11-19 13:24:29,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13983 to 13983. [2021-11-19 13:24:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13983 states, 9313 states have (on average 1.2548051111349727) internal successors, (11686), 9552 states have internal predecessors, (11686), 3685 states have call successors, (3685), 984 states have call predecessors, (3685), 984 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-19 13:24:29,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13983 states to 13983 states and 19056 transitions. [2021-11-19 13:24:29,210 INFO L78 Accepts]: Start accepts. Automaton has 13983 states and 19056 transitions. Word has length 303 [2021-11-19 13:24:29,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:24:29,210 INFO L470 AbstractCegarLoop]: Abstraction has 13983 states and 19056 transitions. [2021-11-19 13:24:29,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:24:29,211 INFO L276 IsEmpty]: Start isEmpty. Operand 13983 states and 19056 transitions. [2021-11-19 13:24:29,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-19 13:24:29,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:29,227 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:24:29,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:29,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-19 13:24:29,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:24:29,629 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:24:29,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:29,629 INFO L85 PathProgramCache]: Analyzing trace with hash -224021470, now seen corresponding path program 1 times [2021-11-19 13:24:29,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:24:29,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915312022] [2021-11-19 13:24:29,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:29,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:24:29,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:24:29,633 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:24:29,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 13:24:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:31,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:24:31,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:24:32,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:33,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:24:33,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:24:33,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915312022] [2021-11-19 13:24:33,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915312022] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:24:33,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1920656795] [2021-11-19 13:24:33,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:33,095 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:24:33,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:24:33,096 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:24:33,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 13:24:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:34,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:24:34,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:24:36,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:24:37,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1920656795] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:24:37,862 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:24:37,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:24:37,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208167784] [2021-11-19 13:24:37,863 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:24:37,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:24:37,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:24:37,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:24:37,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:24:37,865 INFO L87 Difference]: Start difference. First operand 13983 states and 19056 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:24:46,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:24:46,300 INFO L93 Difference]: Finished difference Result 27931 states and 38182 transitions. [2021-11-19 13:24:46,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:24:46,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 304 [2021-11-19 13:24:46,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:24:46,397 INFO L225 Difference]: With dead ends: 27931 [2021-11-19 13:24:46,397 INFO L226 Difference]: Without dead ends: 13983 [2021-11-19 13:24:46,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 1202 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:24:46,459 INFO L933 BasicCegarLoop]: 3505 mSDtfsCounter, 3374 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:24:46,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3374 Valid, 5599 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-11-19 13:24:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13983 states. [2021-11-19 13:24:47,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13983 to 13983. [2021-11-19 13:24:47,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13983 states, 9313 states have (on average 1.2539460968538603) internal successors, (11678), 9552 states have internal predecessors, (11678), 3685 states have call successors, (3685), 984 states have call predecessors, (3685), 984 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-19 13:24:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13983 states to 13983 states and 19048 transitions. [2021-11-19 13:24:47,856 INFO L78 Accepts]: Start accepts. Automaton has 13983 states and 19048 transitions. Word has length 304 [2021-11-19 13:24:47,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:24:47,858 INFO L470 AbstractCegarLoop]: Abstraction has 13983 states and 19048 transitions. [2021-11-19 13:24:47,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:24:47,858 INFO L276 IsEmpty]: Start isEmpty. Operand 13983 states and 19048 transitions. [2021-11-19 13:24:47,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-19 13:24:47,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:24:47,871 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:24:47,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:48,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:24:48,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:24:48,273 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:24:48,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:24:48,273 INFO L85 PathProgramCache]: Analyzing trace with hash -861646026, now seen corresponding path program 1 times [2021-11-19 13:24:48,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:24:48,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311799957] [2021-11-19 13:24:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:48,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:24:48,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:24:48,283 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:24:48,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 13:24:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:50,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:24:50,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:24:51,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:24:52,114 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:24:52,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311799957] [2021-11-19 13:24:52,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311799957] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:24:52,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1459284743] [2021-11-19 13:24:52,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:24:52,115 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:24:52,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:24:52,116 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:24:52,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 13:24:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:24:53,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:24:53,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:24:55,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:24:57,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1459284743] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:24:57,050 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:24:57,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:24:57,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096266848] [2021-11-19 13:24:57,051 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:24:57,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:24:57,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:24:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:24:57,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:24:57,053 INFO L87 Difference]: Start difference. First operand 13983 states and 19048 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:25:05,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:05,446 INFO L93 Difference]: Finished difference Result 27931 states and 38166 transitions. [2021-11-19 13:25:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:25:05,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 305 [2021-11-19 13:25:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:05,508 INFO L225 Difference]: With dead ends: 27931 [2021-11-19 13:25:05,508 INFO L226 Difference]: Without dead ends: 13983 [2021-11-19 13:25:05,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1216 GetRequests, 1206 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:25:05,559 INFO L933 BasicCegarLoop]: 3504 mSDtfsCounter, 3373 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3373 SdHoareTripleChecker+Valid, 5597 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:05,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3373 Valid, 5597 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-19 13:25:05,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13983 states. [2021-11-19 13:25:07,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13983 to 13983. [2021-11-19 13:25:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13983 states, 9313 states have (on average 1.2530870825727478) internal successors, (11670), 9552 states have internal predecessors, (11670), 3685 states have call successors, (3685), 984 states have call predecessors, (3685), 984 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-19 13:25:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13983 states to 13983 states and 19040 transitions. [2021-11-19 13:25:07,167 INFO L78 Accepts]: Start accepts. Automaton has 13983 states and 19040 transitions. Word has length 305 [2021-11-19 13:25:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:07,167 INFO L470 AbstractCegarLoop]: Abstraction has 13983 states and 19040 transitions. [2021-11-19 13:25:07,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:25:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 13983 states and 19040 transitions. [2021-11-19 13:25:07,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-19 13:25:07,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:07,180 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:07,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-19 13:25:07,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:07,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:07,581 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:07,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:07,582 INFO L85 PathProgramCache]: Analyzing trace with hash 961345822, now seen corresponding path program 1 times [2021-11-19 13:25:07,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:07,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109662681] [2021-11-19 13:25:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:07,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:07,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:07,584 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:07,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 13:25:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:09,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:25:09,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:25:10,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:25:11,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:11,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109662681] [2021-11-19 13:25:11,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109662681] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:11,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1591537561] [2021-11-19 13:25:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:11,283 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:11,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:25:11,293 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:25:11,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-19 13:25:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:12,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:25:12,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:25:14,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:25:16,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1591537561] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:16,093 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:25:16,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:25:16,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782235517] [2021-11-19 13:25:16,094 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:16,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:25:16,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:25:16,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:25:16,096 INFO L87 Difference]: Start difference. First operand 13983 states and 19040 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:25:23,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:23,939 INFO L93 Difference]: Finished difference Result 28001 states and 38200 transitions. [2021-11-19 13:25:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:25:23,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 306 [2021-11-19 13:25:23,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:24,000 INFO L225 Difference]: With dead ends: 28001 [2021-11-19 13:25:24,000 INFO L226 Difference]: Without dead ends: 14053 [2021-11-19 13:25:24,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1220 GetRequests, 1210 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:25:24,040 INFO L933 BasicCegarLoop]: 3520 mSDtfsCounter, 3387 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3387 SdHoareTripleChecker+Valid, 5656 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:24,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3387 Valid, 5656 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-19 13:25:24,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14053 states. [2021-11-19 13:25:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14053 to 14053. [2021-11-19 13:25:25,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14053 states, 9363 states have (on average 1.2508811278436398) internal successors, (11712), 9602 states have internal predecessors, (11712), 3685 states have call successors, (3685), 1004 states have call predecessors, (3685), 1004 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-19 13:25:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14053 states to 14053 states and 19082 transitions. [2021-11-19 13:25:25,226 INFO L78 Accepts]: Start accepts. Automaton has 14053 states and 19082 transitions. Word has length 306 [2021-11-19 13:25:25,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:25,227 INFO L470 AbstractCegarLoop]: Abstraction has 14053 states and 19082 transitions. [2021-11-19 13:25:25,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:25:25,228 INFO L276 IsEmpty]: Start isEmpty. Operand 14053 states and 19082 transitions. [2021-11-19 13:25:25,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-19 13:25:25,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:25,239 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:25,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:25,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:25,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:25,641 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:25,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:25,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1754034866, now seen corresponding path program 1 times [2021-11-19 13:25:25,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:25,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467471867] [2021-11-19 13:25:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:25,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:25,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:25,645 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:25,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 13:25:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:27,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:25:27,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:25:28,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:25:29,048 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:29,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467471867] [2021-11-19 13:25:29,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467471867] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:29,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1276643267] [2021-11-19 13:25:29,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:29,048 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:29,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:25:29,049 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:25:29,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-19 13:25:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:30,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:25:30,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:25:32,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:25:33,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1276643267] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:33,547 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:25:33,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:25:33,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681579044] [2021-11-19 13:25:33,548 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:33,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:25:33,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:33,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:25:33,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:25:33,549 INFO L87 Difference]: Start difference. First operand 14053 states and 19082 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:25:41,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:41,223 INFO L93 Difference]: Finished difference Result 28071 states and 38234 transitions. [2021-11-19 13:25:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:25:41,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 307 [2021-11-19 13:25:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:41,286 INFO L225 Difference]: With dead ends: 28071 [2021-11-19 13:25:41,286 INFO L226 Difference]: Without dead ends: 14053 [2021-11-19 13:25:41,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 1214 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:25:41,323 INFO L933 BasicCegarLoop]: 3502 mSDtfsCounter, 5362 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 1385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5362 SdHoareTripleChecker+Valid, 5593 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1385 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:41,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5362 Valid, 5593 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1385 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-19 13:25:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14053 states. [2021-11-19 13:25:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14053 to 14053. [2021-11-19 13:25:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14053 states, 9363 states have (on average 1.2500267008437467) internal successors, (11704), 9602 states have internal predecessors, (11704), 3685 states have call successors, (3685), 1004 states have call predecessors, (3685), 1004 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-19 13:25:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14053 states to 14053 states and 19074 transitions. [2021-11-19 13:25:42,510 INFO L78 Accepts]: Start accepts. Automaton has 14053 states and 19074 transitions. Word has length 307 [2021-11-19 13:25:42,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:42,510 INFO L470 AbstractCegarLoop]: Abstraction has 14053 states and 19074 transitions. [2021-11-19 13:25:42,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:25:42,511 INFO L276 IsEmpty]: Start isEmpty. Operand 14053 states and 19074 transitions. [2021-11-19 13:25:42,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-11-19 13:25:42,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:42,521 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:42,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2021-11-19 13:25:42,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-19 13:25:42,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:25:42,922 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:25:42,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:25:42,923 INFO L85 PathProgramCache]: Analyzing trace with hash 672108058, now seen corresponding path program 1 times [2021-11-19 13:25:42,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:25:42,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420881961] [2021-11-19 13:25:42,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:42,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:25:42,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:25:42,927 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:25:42,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 13:25:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:44,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:25:44,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:25:45,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:25:46,074 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:25:46,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420881961] [2021-11-19 13:25:46,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420881961] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:25:46,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [777920673] [2021-11-19 13:25:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:25:46,074 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:25:46,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:25:46,075 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:25:46,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-19 13:25:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:25:47,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:25:47,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:25:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:25:49,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:25:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:25:50,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [777920673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:25:50,416 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:25:50,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:25:50,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799476640] [2021-11-19 13:25:50,417 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:25:50,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:25:50,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:25:50,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:25:50,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:25:50,420 INFO L87 Difference]: Start difference. First operand 14053 states and 19074 transitions. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:25:58,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:25:58,164 INFO L93 Difference]: Finished difference Result 28071 states and 38218 transitions. [2021-11-19 13:25:58,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:25:58,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 308 [2021-11-19 13:25:58,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:25:58,239 INFO L225 Difference]: With dead ends: 28071 [2021-11-19 13:25:58,239 INFO L226 Difference]: Without dead ends: 14053 [2021-11-19 13:25:58,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1228 GetRequests, 1218 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:25:58,289 INFO L933 BasicCegarLoop]: 3501 mSDtfsCounter, 3370 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3370 SdHoareTripleChecker+Valid, 5591 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:25:58,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3370 Valid, 5591 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-19 13:25:58,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14053 states. [2021-11-19 13:25:59,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14053 to 14053. [2021-11-19 13:25:59,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14053 states, 9363 states have (on average 1.2491722738438535) internal successors, (11696), 9602 states have internal predecessors, (11696), 3685 states have call successors, (3685), 1004 states have call predecessors, (3685), 1004 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-19 13:25:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14053 states to 14053 states and 19066 transitions. [2021-11-19 13:25:59,678 INFO L78 Accepts]: Start accepts. Automaton has 14053 states and 19066 transitions. Word has length 308 [2021-11-19 13:25:59,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:25:59,679 INFO L470 AbstractCegarLoop]: Abstraction has 14053 states and 19066 transitions. [2021-11-19 13:25:59,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:25:59,680 INFO L276 IsEmpty]: Start isEmpty. Operand 14053 states and 19066 transitions. [2021-11-19 13:25:59,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-19 13:25:59,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:25:59,696 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:25:59,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2021-11-19 13:25:59,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-19 13:26:00,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:26:00,101 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:26:00,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1606631982, now seen corresponding path program 1 times [2021-11-19 13:26:00,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:00,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579635288] [2021-11-19 13:26:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:00,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:00,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:00,229 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:00,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 13:26:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:02,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:26:02,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:26:02,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:26:03,773 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:03,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579635288] [2021-11-19 13:26:03,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579635288] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:26:03,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1081059462] [2021-11-19 13:26:03,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:03,773 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:26:03,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:26:03,775 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:26:03,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-19 13:26:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:05,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:26:05,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:26:07,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-19 13:26:08,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1081059462] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:26:08,777 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:26:08,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 13:26:08,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681862265] [2021-11-19 13:26:08,778 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:08,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:26:08,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:08,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:26:08,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:26:08,780 INFO L87 Difference]: Start difference. First operand 14053 states and 19066 transitions. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:26:16,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:26:16,439 INFO L93 Difference]: Finished difference Result 28071 states and 38202 transitions. [2021-11-19 13:26:16,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:26:16,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 309 [2021-11-19 13:26:16,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:26:16,488 INFO L225 Difference]: With dead ends: 28071 [2021-11-19 13:26:16,488 INFO L226 Difference]: Without dead ends: 14053 [2021-11-19 13:26:16,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 1222 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:26:16,523 INFO L933 BasicCegarLoop]: 3500 mSDtfsCounter, 3369 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3369 SdHoareTripleChecker+Valid, 5589 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:26:16,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3369 Valid, 5589 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-19 13:26:16,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14053 states. [2021-11-19 13:26:17,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14053 to 14053. [2021-11-19 13:26:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14053 states, 9363 states have (on average 1.2483178468439602) internal successors, (11688), 9602 states have internal predecessors, (11688), 3685 states have call successors, (3685), 1004 states have call predecessors, (3685), 1004 states have return successors, (3685), 3637 states have call predecessors, (3685), 3685 states have call successors, (3685) [2021-11-19 13:26:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14053 states to 14053 states and 19058 transitions. [2021-11-19 13:26:17,597 INFO L78 Accepts]: Start accepts. Automaton has 14053 states and 19058 transitions. Word has length 309 [2021-11-19 13:26:17,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:26:17,597 INFO L470 AbstractCegarLoop]: Abstraction has 14053 states and 19058 transitions. [2021-11-19 13:26:17,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 3 states have call successors, (56), 3 states have call predecessors, (56), 4 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:26:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 14053 states and 19058 transitions. [2021-11-19 13:26:17,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-19 13:26:17,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:26:17,614 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:26:17,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-19 13:26:17,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-19 13:26:18,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:26:18,029 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:26:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1635261133, now seen corresponding path program 1 times [2021-11-19 13:26:18,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:18,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525807621] [2021-11-19 13:26:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:18,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:18,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:18,032 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:18,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-19 13:26:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:19,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:26:19,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-19 13:26:20,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2021-11-19 13:26:21,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:21,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525807621] [2021-11-19 13:26:21,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525807621] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:26:21,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1851699064] [2021-11-19 13:26:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:21,236 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:26:21,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:26:21,236 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:26:21,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-19 13:26:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:22,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:26:22,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:23,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2021-11-19 13:26:23,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:24,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2021-11-19 13:26:24,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1851699064] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:26:24,067 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:26:24,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 11 [2021-11-19 13:26:24,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257257012] [2021-11-19 13:26:24,068 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:24,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:26:24,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:24,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:26:24,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:26:24,070 INFO L87 Difference]: Start difference. First operand 14053 states and 19058 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-19 13:26:33,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:26:33,758 INFO L93 Difference]: Finished difference Result 37918 states and 51420 transitions. [2021-11-19 13:26:33,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:26:33,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 309 [2021-11-19 13:26:33,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:26:33,835 INFO L225 Difference]: With dead ends: 37918 [2021-11-19 13:26:33,835 INFO L226 Difference]: Without dead ends: 23900 [2021-11-19 13:26:33,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 1223 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:26:33,870 INFO L933 BasicCegarLoop]: 7266 mSDtfsCounter, 6594 mSDsluCounter, 5193 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6594 SdHoareTripleChecker+Valid, 12459 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:26:33,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6594 Valid, 12459 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [675 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2021-11-19 13:26:33,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23900 states. [2021-11-19 13:26:35,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23900 to 23890. [2021-11-19 13:26:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23890 states, 15929 states have (on average 1.2472848264172265) internal successors, (19868), 16327 states have internal predecessors, (19868), 6244 states have call successors, (6244), 1716 states have call predecessors, (6244), 1716 states have return successors, (6244), 6157 states have call predecessors, (6244), 6244 states have call successors, (6244) [2021-11-19 13:26:35,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23890 states to 23890 states and 32356 transitions. [2021-11-19 13:26:35,837 INFO L78 Accepts]: Start accepts. Automaton has 23890 states and 32356 transitions. Word has length 309 [2021-11-19 13:26:35,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:26:35,838 INFO L470 AbstractCegarLoop]: Abstraction has 23890 states and 32356 transitions. [2021-11-19 13:26:35,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-19 13:26:35,838 INFO L276 IsEmpty]: Start isEmpty. Operand 23890 states and 32356 transitions. [2021-11-19 13:26:35,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-11-19 13:26:35,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:26:35,853 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 15, 15, 15, 15, 15, 15, 8, 8, 3, 3, 3, 3, 3, 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] [2021-11-19 13:26:35,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-19 13:26:36,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-11-19 13:26:36,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:26:36,270 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:26:36,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash 886744501, now seen corresponding path program 1 times [2021-11-19 13:26:36,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:36,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840567405] [2021-11-19 13:26:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:36,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:36,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:36,273 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:36,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-19 13:26:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:38,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2258 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:26:38,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-11-19 13:26:38,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2021-11-19 13:26:39,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:39,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840567405] [2021-11-19 13:26:39,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840567405] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:26:39,836 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:26:39,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:26:39,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113152192] [2021-11-19 13:26:39,836 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:39,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:26:39,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:39,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:26:39,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:26:39,838 INFO L87 Difference]: Start difference. First operand 23890 states and 32356 transitions. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 4 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2021-11-19 13:26:49,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:26:49,324 INFO L93 Difference]: Finished difference Result 71332 states and 96435 transitions. [2021-11-19 13:26:49,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:26:49,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 4 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) Word has length 367 [2021-11-19 13:26:49,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:26:49,655 INFO L225 Difference]: With dead ends: 71332 [2021-11-19 13:26:49,655 INFO L226 Difference]: Without dead ends: 47477 [2021-11-19 13:26:49,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:26:49,725 INFO L933 BasicCegarLoop]: 4221 mSDtfsCounter, 3770 mSDsluCounter, 6124 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3770 SdHoareTripleChecker+Valid, 10345 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:26:49,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3770 Valid, 10345 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-19 13:26:49,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47477 states. [2021-11-19 13:26:53,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47477 to 47475. [2021-11-19 13:26:53,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47475 states, 31671 states have (on average 1.2459979160746424) internal successors, (39462), 32430 states have internal predecessors, (39462), 12322 states have call successors, (12322), 3481 states have call predecessors, (12322), 3481 states have return successors, (12322), 12187 states have call predecessors, (12322), 12322 states have call successors, (12322) [2021-11-19 13:26:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47475 states to 47475 states and 64106 transitions. [2021-11-19 13:26:54,025 INFO L78 Accepts]: Start accepts. Automaton has 47475 states and 64106 transitions. Word has length 367 [2021-11-19 13:26:54,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:26:54,025 INFO L470 AbstractCegarLoop]: Abstraction has 47475 states and 64106 transitions. [2021-11-19 13:26:54,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 4 states have call successors, (69), 3 states have call predecessors, (69), 3 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2021-11-19 13:26:54,026 INFO L276 IsEmpty]: Start isEmpty. Operand 47475 states and 64106 transitions. [2021-11-19 13:26:54,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-11-19 13:26:54,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:26:54,054 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 15, 15, 15, 15, 15, 15, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:26:54,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-11-19 13:26:54,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:26:54,269 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:26:54,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:54,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1546937166, now seen corresponding path program 1 times [2021-11-19 13:26:54,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:54,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083379514] [2021-11-19 13:26:54,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:54,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:54,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:54,272 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:54,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-19 13:26:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:56,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 2070 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:26:56,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 273 proven. 3 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2021-11-19 13:26:57,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2021-11-19 13:26:57,987 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:57,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083379514] [2021-11-19 13:26:57,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083379514] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:26:57,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1957509175] [2021-11-19 13:26:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:57,988 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:26:57,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:26:57,989 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:26:57,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-19 13:27:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:27:04,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 2070 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:27:04,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:27:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 273 proven. 3 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2021-11-19 13:27:05,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:27:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2021-11-19 13:27:06,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1957509175] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:27:06,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195270961] [2021-11-19 13:27:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:27:06,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:27:06,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:27:06,352 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:27:06,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-19 13:27:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:27:07,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 2070 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:27:07,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:27:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2021-11-19 13:27:08,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:27:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2021-11-19 13:27:09,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195270961] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:27:09,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-19 13:27:09,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8, 8, 8, 8] total 16 [2021-11-19 13:27:09,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740116019] [2021-11-19 13:27:09,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:27:09,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:27:09,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:27:09,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:27:09,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:27:09,377 INFO L87 Difference]: Start difference. First operand 47475 states and 64106 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2021-11-19 13:27:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:27:13,410 INFO L93 Difference]: Finished difference Result 47531 states and 64194 transitions. [2021-11-19 13:27:13,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:27:13,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) Word has length 365 [2021-11-19 13:27:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:27:13,414 INFO L225 Difference]: With dead ends: 47531 [2021-11-19 13:27:13,414 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 13:27:13,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2184 GetRequests, 2170 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:27:13,501 INFO L933 BasicCegarLoop]: 3501 mSDtfsCounter, 3 mSDsluCounter, 10498 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 13999 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:27:13,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 13999 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:27:13,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 13:27:13,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 13:27:13,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:13,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 13:27:13,506 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 365 [2021-11-19 13:27:13,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:27:13,507 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 13:27:13,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2021-11-19 13:27:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 13:27:13,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 13:27:13,509 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 13:27:13,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-19 13:27:13,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-19 13:27:13,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2021-11-19 13:27:14,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e40627-36e0-4754-87c7-144f8cd28717/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:27:14,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.