./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/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 004fcd1800da3fcc8c5839d85d0662ed24df5100e10ec8a5024be56f561eab28 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:44:50,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:44:50,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:44:50,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:44:50,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:44:50,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:44:50,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:44:50,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:44:50,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:44:50,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:44:50,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:44:50,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:44:50,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:44:50,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:44:50,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:44:50,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:44:50,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:44:50,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:44:50,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:44:50,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:44:50,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:44:50,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:44:50,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:44:50,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:44:50,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:44:50,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:44:50,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:44:50,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:44:50,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:44:50,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:44:50,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:44:50,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:44:50,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:44:50,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:44:50,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:44:50,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:44:50,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:44:50,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:44:50,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:44:50,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:44:50,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:44:50,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:44:50,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:44:50,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:44:50,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:44:50,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:44:50,425 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:44:50,425 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:44:50,426 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:44:50,426 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:44:50,426 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:44:50,427 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:44:50,427 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:44:50,427 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:44:50,428 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:44:50,428 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:44:50,428 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:44:50,429 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:44:50,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:44:50,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:44:50,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:44:50,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:44:50,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:44:50,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:44:50,431 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:44:50,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:44:50,433 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:44:50,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:44:50,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:44:50,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:44:50,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:44:50,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:44:50,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:44:50,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:44:50,438 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:44:50,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:44:50,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:44:50,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:44:50,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:44:50,441 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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 004fcd1800da3fcc8c5839d85d0662ed24df5100e10ec8a5024be56f561eab28 [2021-11-19 15:44:50,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:44:50,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:44:50,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:44:50,861 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:44:50,862 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:44:50,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-19 15:44:50,954 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/data/0c67e12e9/bb88b2f962ca4cf797c3887d16f36f2f/FLAGf600cd226 [2021-11-19 15:44:52,224 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:44:52,225 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-19 15:44:52,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/data/0c67e12e9/bb88b2f962ca4cf797c3887d16f36f2f/FLAGf600cd226 [2021-11-19 15:44:52,405 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/data/0c67e12e9/bb88b2f962ca4cf797c3887d16f36f2f [2021-11-19 15:44:52,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:44:52,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:44:52,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:44:52,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:44:52,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:44:52,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:44:52" (1/1) ... [2021-11-19 15:44:52,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a992eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:52, skipping insertion in model container [2021-11-19 15:44:52,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:44:52" (1/1) ... [2021-11-19 15:44:52,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:44:52,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:44:55,624 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 15:44:55,633 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 15:44:55,659 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 15:44:55,670 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 15:44:55,755 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 15:44:55,756 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 15:44:55,772 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 15:44:55,774 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 15:44:55,821 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 15:44:55,875 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 15:44:55,887 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 15:44:55,889 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 15:44:55,892 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 15:44:55,904 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 15:44:55,920 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 15:44:55,940 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 15:44:55,942 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 15:44:55,959 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 15:44:55,961 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 15:44:55,963 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 15:44:55,975 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 15:44:55,993 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 15:44:55,994 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 15:44:56,000 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 15:44:56,002 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 15:44:56,067 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 15:44:56,068 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 15:44:56,076 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 15:44:56,084 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 15:44:56,087 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 15:44:56,088 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 15:44:56,089 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 15:44:56,090 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 15:44:56,107 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 15:44:56,108 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 15:44:56,109 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 15:44:56,110 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 15:44:57,500 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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452511,452524] [2021-11-19 15:44:57,503 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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452656,452669] [2021-11-19 15:44:57,530 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:44:57,578 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 15:44:57,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@50597e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:57, skipping insertion in model container [2021-11-19 15:44:57,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:44:57,579 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:44:57,581 INFO L158 Benchmark]: Toolchain (without parser) took 5169.88ms. Allocated memory was 96.5MB in the beginning and 165.7MB in the end (delta: 69.2MB). Free memory was 62.0MB in the beginning and 76.4MB in the end (delta: -14.4MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. [2021-11-19 15:44:57,582 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 68.0MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:44:57,583 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5166.30ms. Allocated memory was 96.5MB in the beginning and 165.7MB in the end (delta: 69.2MB). Free memory was 62.0MB in the beginning and 77.4MB in the end (delta: -15.4MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. [2021-11-19 15:44:57,585 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 68.0MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5166.30ms. Allocated memory was 96.5MB in the beginning and 165.7MB in the end (delta: 69.2MB). Free memory was 62.0MB in the beginning and 77.4MB in the end (delta: -15.4MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6136]: 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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/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 004fcd1800da3fcc8c5839d85d0662ed24df5100e10ec8a5024be56f561eab28 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:44:59,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:44:59,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:44:59,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:44:59,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:44:59,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:44:59,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:44:59,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:44:59,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:44:59,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:44:59,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:44:59,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:44:59,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:44:59,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:44:59,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:44:59,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:44:59,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:44:59,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:44:59,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:44:59,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:44:59,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:44:59,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:44:59,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:44:59,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:44:59,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:44:59,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:44:59,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:44:59,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:44:59,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:44:59,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:44:59,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:44:59,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:44:59,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:44:59,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:44:59,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:44:59,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:44:59,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:44:59,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:44:59,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:44:59,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:44:59,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:44:59,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:44:59,964 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:44:59,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:44:59,966 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:44:59,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:44:59,966 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:44:59,966 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:44:59,967 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:44:59,967 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:44:59,967 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:44:59,967 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:44:59,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:44:59,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:44:59,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:44:59,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:44:59,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:44:59,969 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:44:59,970 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:44:59,970 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:44:59,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:44:59,970 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:44:59,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:44:59,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:44:59,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:44:59,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:44:59,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:44:59,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:44:59,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:44:59,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:44:59,973 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:44:59,973 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:44:59,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:44:59,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:44:59,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:44:59,974 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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 004fcd1800da3fcc8c5839d85d0662ed24df5100e10ec8a5024be56f561eab28 [2021-11-19 15:45:00,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:45:00,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:45:00,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:45:00,343 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:45:00,344 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:45:00,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-19 15:45:00,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/data/8e0a14a70/c6d1ae6f1fb7401c89d7153444638b04/FLAGd70950fa7 [2021-11-19 15:45:01,399 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:45:01,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-19 15:45:01,486 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/data/8e0a14a70/c6d1ae6f1fb7401c89d7153444638b04/FLAGd70950fa7 [2021-11-19 15:45:01,795 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/data/8e0a14a70/c6d1ae6f1fb7401c89d7153444638b04 [2021-11-19 15:45:01,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:45:01,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:45:01,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:45:01,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:45:01,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:45:01,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:45:01" (1/1) ... [2021-11-19 15:45:01,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21090d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:01, skipping insertion in model container [2021-11-19 15:45:01,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:45:01" (1/1) ... [2021-11-19 15:45:01,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:45:02,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:45:06,052 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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452511,452524] [2021-11-19 15:45:06,054 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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452656,452669] [2021-11-19 15:45:06,080 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:45:06,140 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:45:06,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:45:06,733 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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452511,452524] [2021-11-19 15:45:06,733 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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452656,452669] [2021-11-19 15:45:06,741 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:45:06,793 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:45:07,348 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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452511,452524] [2021-11-19 15:45:07,349 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_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452656,452669] [2021-11-19 15:45:07,357 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:45:07,751 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:45:07,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:07 WrapperNode [2021-11-19 15:45:07,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:45:07,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:45:07,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:45:07,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:45:07,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:07" (1/1) ... [2021-11-19 15:45:07,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:07" (1/1) ... [2021-11-19 15:45:08,230 INFO L137 Inliner]: procedures = 562, calls = 4413, calls flagged for inlining = 251, calls inlined = 230, statements flattened = 8490 [2021-11-19 15:45:08,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:45:08,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:45:08,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:45:08,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:45:08,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:07" (1/1) ... [2021-11-19 15:45:08,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:07" (1/1) ... [2021-11-19 15:45:08,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:07" (1/1) ... [2021-11-19 15:45:08,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:07" (1/1) ... [2021-11-19 15:45:08,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:07" (1/1) ... [2021-11-19 15:45:08,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:07" (1/1) ... [2021-11-19 15:45:08,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:07" (1/1) ... [2021-11-19 15:45:08,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:45:08,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:45:08,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:45:08,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:45:08,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:07" (1/1) ... [2021-11-19 15:45:08,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:45:08,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:45:08,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:45:08,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:45:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_122 [2021-11-19 15:45:08,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_122 [2021-11-19 15:45:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 15:45:08,850 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 15:45:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 15:45:08,850 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 15:45:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-19 15:45:08,850 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-19 15:45:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-11-19 15:45:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-11-19 15:45:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_nway_reset [2021-11-19 15:45:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_nway_reset [2021-11-19 15:45:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 15:45:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 15:45:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_88 [2021-11-19 15:45:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_88 [2021-11-19 15:45:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_107 [2021-11-19 15:45:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_107 [2021-11-19 15:45:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 15:45:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 15:45:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-19 15:45:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-19 15:45:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure set_8021q_mode [2021-11-19 15:45:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8021q_mode [2021-11-19 15:45:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_remove_one [2021-11-19 15:45:08,853 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_remove_one [2021-11-19 15:45:08,853 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-19 15:45:08,854 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-19 15:45:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure issue_and_wait [2021-11-19 15:45:08,855 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_and_wait [2021-11-19 15:45:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 15:45:08,855 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 15:45:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-19 15:45:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-19 15:45:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-19 15:45:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-19 15:45:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure window_write32 [2021-11-19 15:45:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write32 [2021-11-19 15:45:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-19 15:45:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-19 15:45:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-19 15:45:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-19 15:45:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_5 [2021-11-19 15:45:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_5 [2021-11-19 15:45:08,858 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 15:45:08,858 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 15:45:08,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-19 15:45:08,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-19 15:45:08,859 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 15:45:08,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 15:45:08,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-19 15:45:08,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-19 15:45:08,861 INFO L130 BoogieDeclarations]: Found specification of procedure window_set [2021-11-19 15:45:08,862 INFO L138 BoogieDeclarations]: Found implementation of procedure window_set [2021-11-19 15:45:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-19 15:45:08,862 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-19 15:45:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 15:45:08,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 15:45:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 15:45:08,863 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 15:45:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-19 15:45:08,864 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-19 15:45:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-19 15:45:08,864 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-19 15:45:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-19 15:45:08,864 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-19 15:45:08,864 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 15:45:08,865 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 15:45:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 15:45:08,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 15:45:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-19 15:45:08,865 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-19 15:45:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 15:45:08,865 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 15:45:08,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_5_2 [2021-11-19 15:45:08,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_5_2 [2021-11-19 15:45:08,866 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-19 15:45:08,866 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-19 15:45:08,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:45:08,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:45:08,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:45:08,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 15:45:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tx_timestamp [2021-11-19 15:45:08,868 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tx_timestamp [2021-11-19 15:45:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-19 15:45:08,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-19 15:45:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 15:45:08,869 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 15:45:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_118 [2021-11-19 15:45:08,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_118 [2021-11-19 15:45:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-19 15:45:08,870 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-19 15:45:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_114 [2021-11-19 15:45:08,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_114 [2021-11-19 15:45:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_tx_timeout [2021-11-19 15:45:08,870 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_tx_timeout [2021-11-19 15:45:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-19 15:45:08,871 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-19 15:45:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure ioport_map [2021-11-19 15:45:08,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ioport_map [2021-11-19 15:45:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 15:45:08,871 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 15:45:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-19 15:45:08,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-19 15:45:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-19 15:45:08,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-19 15:45:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_106 [2021-11-19 15:45:08,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_106 [2021-11-19 15:45:08,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 15:45:08,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 15:45:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_interrupt [2021-11-19 15:45:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_interrupt [2021-11-19 15:45:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-19 15:45:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-19 15:45:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 15:45:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 15:45:08,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 15:45:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 15:45:08,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 15:45:08,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 15:45:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 15:45:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 15:45:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 15:45:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 15:45:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-19 15:45:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-19 15:45:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_set_duplex [2021-11-19 15:45:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_set_duplex [2021-11-19 15:45:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_132 [2021-11-19 15:45:08,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_132 [2021-11-19 15:45:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-19 15:45:08,892 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-19 15:45:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 15:45:08,892 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 15:45:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_error [2021-11-19 15:45:08,893 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_error [2021-11-19 15:45:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 15:45:08,893 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 15:45:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_close [2021-11-19 15:45:08,893 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_close [2021-11-19 15:45:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:45:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2021-11-19 15:45:08,894 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2021-11-19 15:45:08,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-19 15:45:08,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-19 15:45:08,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:45:08,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 15:45:08,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 15:45:08,894 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 15:45:08,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 15:45:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:45:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 15:45:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 15:45:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-19 15:45:08,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-19 15:45:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:45:08,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:45:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 15:45:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-19 15:45:08,897 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-19 15:45:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-19 15:45:08,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-19 15:45:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-19 15:45:08,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-19 15:45:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-19 15:45:08,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-19 15:45:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_set_WOL [2021-11-19 15:45:08,898 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_set_WOL [2021-11-19 15:45:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-19 15:45:08,899 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-19 15:45:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure window_write16 [2021-11-19 15:45:08,899 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write16 [2021-11-19 15:45:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-19 15:45:08,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-19 15:45:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure window_read8 [2021-11-19 15:45:08,899 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read8 [2021-11-19 15:45:08,900 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 15:45:08,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 15:45:08,900 INFO L130 BoogieDeclarations]: Found specification of procedure update_stats [2021-11-19 15:45:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure update_stats [2021-11-19 15:45:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 15:45:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 15:45:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-19 15:45:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-19 15:45:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure poll_vortex [2021-11-19 15:45:08,901 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_vortex [2021-11-19 15:45:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 15:45:08,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 15:45:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-19 15:45:08,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-19 15:45:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_check_media [2021-11-19 15:45:08,902 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_check_media [2021-11-19 15:45:08,902 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-19 15:45:08,903 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-19 15:45:08,903 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_rx [2021-11-19 15:45:08,903 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_rx [2021-11-19 15:45:08,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 15:45:08,903 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-19 15:45:08,903 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-19 15:45:08,903 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_open [2021-11-19 15:45:08,904 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_open [2021-11-19 15:45:08,904 INFO L130 BoogieDeclarations]: Found specification of procedure dump_tx_ring [2021-11-19 15:45:08,904 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_tx_ring [2021-11-19 15:45:08,904 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-19 15:45:08,904 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-19 15:45:08,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:45:08,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:45:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:45:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:45:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_probe1 [2021-11-19 15:45:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_probe1 [2021-11-19 15:45:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:45:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 15:45:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 15:45:08,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 15:45:08,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 15:45:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 15:45:08,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 15:45:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 15:45:08,906 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2021-11-19 15:45:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2021-11-19 15:45:08,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-19 15:45:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-19 15:45:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 15:45:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 15:45:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-19 15:45:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-19 15:45:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 15:45:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 15:45:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-19 15:45:08,908 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-19 15:45:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:45:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_111 [2021-11-19 15:45:08,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_111 [2021-11-19 15:45:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-19 15:45:08,908 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-19 15:45:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 15:45:08,913 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 15:45:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:45:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_suspend [2021-11-19 15:45:08,913 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_suspend [2021-11-19 15:45:08,914 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_interrupt [2021-11-19 15:45:08,914 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_interrupt [2021-11-19 15:45:08,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:45:08,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 15:45:08,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 15:45:08,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:45:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:45:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure rx_oom_timer [2021-11-19 15:45:08,917 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_oom_timer [2021-11-19 15:45:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-19 15:45:08,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-19 15:45:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-19 15:45:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-19 15:45:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 15:45:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 15:45:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 15:45:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 15:45:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-19 15:45:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-19 15:45:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-19 15:45:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-19 15:45:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-19 15:45:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-19 15:45:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_resume [2021-11-19 15:45:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_resume [2021-11-19 15:45:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-19 15:45:08,920 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-19 15:45:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-19 15:45:08,920 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-19 15:45:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_rx [2021-11-19 15:45:08,920 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_rx [2021-11-19 15:45:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_105 [2021-11-19 15:45:08,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_105 [2021-11-19 15:45:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 15:45:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 15:45:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 15:45:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 15:45:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-19 15:45:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-19 15:45:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_133 [2021-11-19 15:45:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_133 [2021-11-19 15:45:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 15:45:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 15:45:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 15:45:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 15:45:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_delay [2021-11-19 15:45:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_delay [2021-11-19 15:45:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_timer [2021-11-19 15:45:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_timer [2021-11-19 15:45:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 15:45:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 15:45:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 15:45:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_down [2021-11-19 15:45:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_down [2021-11-19 15:45:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 15:45:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-19 15:45:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-19 15:45:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-19 15:45:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-19 15:45:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 15:45:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 15:45:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure window_write8 [2021-11-19 15:45:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write8 [2021-11-19 15:45:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure window_read32 [2021-11-19 15:45:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read32 [2021-11-19 15:45:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_10_2 [2021-11-19 15:45:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_10_2 [2021-11-19 15:45:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2021-11-19 15:45:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2021-11-19 15:45:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-19 15:45:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-19 15:45:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_up [2021-11-19 15:45:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_up [2021-11-19 15:45:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure window_read16 [2021-11-19 15:45:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read16 [2021-11-19 15:45:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 15:45:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 15:45:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-19 15:45:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-19 15:45:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-19 15:45:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-19 15:45:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-19 15:45:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-19 15:45:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-19 15:45:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-19 15:45:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-19 15:45:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-19 15:45:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-11-19 15:45:08,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-11-19 15:45:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_112 [2021-11-19 15:45:08,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_112 [2021-11-19 15:45:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_113 [2021-11-19 15:45:08,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_113 [2021-11-19 15:45:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 15:45:08,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 15:45:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-19 15:45:08,929 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-19 15:45:10,172 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:45:10,179 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:45:21,654 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 15:46:20,826 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:46:20,857 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:46:20,857 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 15:46:20,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:46:20 BoogieIcfgContainer [2021-11-19 15:46:20,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:46:20,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:46:20,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:46:20,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:46:20,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:45:01" (1/3) ... [2021-11-19 15:46:20,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1922abcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:46:20, skipping insertion in model container [2021-11-19 15:46:20,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:07" (2/3) ... [2021-11-19 15:46:20,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1922abcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:46:20, skipping insertion in model container [2021-11-19 15:46:20,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:46:20" (3/3) ... [2021-11-19 15:46:20,876 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-19 15:46:20,883 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:46:20,883 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:46:20,959 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:46:20,967 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 15:46:20,967 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:46:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 2836 states, 1921 states have (on average 1.3321186881832379) internal successors, (2559), 2007 states have internal predecessors, (2559), 760 states have call successors, (760), 154 states have call predecessors, (760), 153 states have return successors, (753), 735 states have call predecessors, (753), 753 states have call successors, (753) [2021-11-19 15:46:21,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-19 15:46:21,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:21,095 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 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] [2021-11-19 15:46:21,096 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:21,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:21,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1292134057, now seen corresponding path program 1 times [2021-11-19 15:46:21,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:21,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930444316] [2021-11-19 15:46:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:21,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:21,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:21,144 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:21,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:46:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:27,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 4700 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:46:27,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 15:46:28,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-19 15:46:29,404 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:29,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930444316] [2021-11-19 15:46:29,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930444316] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:29,405 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:29,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 15:46:29,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911234469] [2021-11-19 15:46:29,409 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:29,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:46:29,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:29,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:46:29,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:46:29,484 INFO L87 Difference]: Start difference. First operand has 2836 states, 1921 states have (on average 1.3321186881832379) internal successors, (2559), 2007 states have internal predecessors, (2559), 760 states have call successors, (760), 154 states have call predecessors, (760), 153 states have return successors, (753), 735 states have call predecessors, (753), 753 states have call successors, (753) Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-19 15:46:32,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:46:55,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:55,112 INFO L93 Difference]: Finished difference Result 8873 states and 12959 transitions. [2021-11-19 15:46:55,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 15:46:55,115 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 156 [2021-11-19 15:46:55,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:55,222 INFO L225 Difference]: With dead ends: 8873 [2021-11-19 15:46:55,222 INFO L226 Difference]: Without dead ends: 5884 [2021-11-19 15:46:55,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:46:55,414 INFO L933 BasicCegarLoop]: 5847 mSDtfsCounter, 5313 mSDsluCounter, 28922 mSDsCounter, 0 mSdLazyCounter, 3295 mSolverCounterSat, 454 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5369 SdHoareTripleChecker+Valid, 34769 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 3295 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:55,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5369 Valid, 34769 Invalid, 3750 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [454 Valid, 3295 Invalid, 1 Unknown, 0 Unchecked, 24.4s Time] [2021-11-19 15:46:55,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2021-11-19 15:46:55,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5530. [2021-11-19 15:46:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5530 states, 3776 states have (on average 1.326271186440678) internal successors, (5008), 3935 states have internal predecessors, (5008), 1450 states have call successors, (1450), 303 states have call predecessors, (1450), 303 states have return successors, (1450), 1414 states have call predecessors, (1450), 1450 states have call successors, (1450) [2021-11-19 15:46:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 7908 transitions. [2021-11-19 15:46:56,035 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 7908 transitions. Word has length 156 [2021-11-19 15:46:56,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:56,036 INFO L470 AbstractCegarLoop]: Abstraction has 5530 states and 7908 transitions. [2021-11-19 15:46:56,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-19 15:46:56,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 7908 transitions. [2021-11-19 15:46:56,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-19 15:46:56,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:56,063 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 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] [2021-11-19 15:46:56,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:56,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:56,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:56,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:56,285 INFO L85 PathProgramCache]: Analyzing trace with hash -325306393, now seen corresponding path program 1 times [2021-11-19 15:46:56,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:56,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668305379] [2021-11-19 15:46:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:56,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:56,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:56,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:56,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:47:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:02,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 4699 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:47:02,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 15:47:03,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-19 15:47:04,265 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:04,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668305379] [2021-11-19 15:47:04,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668305379] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:04,266 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:04,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-19 15:47:04,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574453995] [2021-11-19 15:47:04,267 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:04,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:47:04,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:04,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:47:04,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:47:04,277 INFO L87 Difference]: Start difference. First operand 5530 states and 7908 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2021-11-19 15:47:12,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:12,750 INFO L93 Difference]: Finished difference Result 17901 states and 25307 transitions. [2021-11-19 15:47:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:47:12,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) Word has length 156 [2021-11-19 15:47:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:12,908 INFO L225 Difference]: With dead ends: 17901 [2021-11-19 15:47:12,908 INFO L226 Difference]: Without dead ends: 13779 [2021-11-19 15:47:12,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 308 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 15:47:12,950 INFO L933 BasicCegarLoop]: 6937 mSDtfsCounter, 6850 mSDsluCounter, 7565 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6850 SdHoareTripleChecker+Valid, 14502 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:12,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6850 Valid, 14502 Invalid, 1145 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-11-19 15:47:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13779 states. [2021-11-19 15:47:13,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13779 to 7593. [2021-11-19 15:47:13,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7593 states, 5132 states have (on average 1.3201480904130942) internal successors, (6775), 5350 states have internal predecessors, (6775), 2017 states have call successors, (2017), 443 states have call predecessors, (2017), 443 states have return successors, (2017), 1968 states have call predecessors, (2017), 2017 states have call successors, (2017) [2021-11-19 15:47:13,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7593 states to 7593 states and 10809 transitions. [2021-11-19 15:47:13,628 INFO L78 Accepts]: Start accepts. Automaton has 7593 states and 10809 transitions. Word has length 156 [2021-11-19 15:47:13,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:13,631 INFO L470 AbstractCegarLoop]: Abstraction has 7593 states and 10809 transitions. [2021-11-19 15:47:13,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2021-11-19 15:47:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 7593 states and 10809 transitions. [2021-11-19 15:47:13,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-19 15:47:13,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:13,640 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 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] [2021-11-19 15:47:13,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:13,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:13,864 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:13,865 INFO L85 PathProgramCache]: Analyzing trace with hash 38160105, now seen corresponding path program 1 times [2021-11-19 15:47:13,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:13,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273181213] [2021-11-19 15:47:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:13,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:13,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:13,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:13,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:47:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:19,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 4699 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 15:47:19,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-19 15:47:20,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-19 15:47:22,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:22,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273181213] [2021-11-19 15:47:22,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273181213] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:22,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:22,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 23 [2021-11-19 15:47:22,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965154607] [2021-11-19 15:47:22,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:22,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 15:47:22,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:22,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 15:47:22,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2021-11-19 15:47:22,834 INFO L87 Difference]: Start difference. First operand 7593 states and 10809 transitions. Second operand has 13 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-19 15:47:25,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:25,501 INFO L93 Difference]: Finished difference Result 13425 states and 19000 transitions. [2021-11-19 15:47:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 15:47:25,505 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 156 [2021-11-19 15:47:25,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:25,585 INFO L225 Difference]: With dead ends: 13425 [2021-11-19 15:47:25,585 INFO L226 Difference]: Without dead ends: 7239 [2021-11-19 15:47:25,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2021-11-19 15:47:25,623 INFO L933 BasicCegarLoop]: 3939 mSDtfsCounter, 15 mSDsluCounter, 43229 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 47168 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:25,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 47168 Invalid, 567 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 15:47:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7239 states. [2021-11-19 15:47:25,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7239 to 7230. [2021-11-19 15:47:25,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7230 states, 4863 states have (on average 1.32449105490438) internal successors, (6441), 5078 states have internal predecessors, (6441), 1923 states have call successors, (1923), 443 states have call predecessors, (1923), 443 states have return successors, (1923), 1873 states have call predecessors, (1923), 1923 states have call successors, (1923) [2021-11-19 15:47:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7230 states to 7230 states and 10287 transitions. [2021-11-19 15:47:26,018 INFO L78 Accepts]: Start accepts. Automaton has 7230 states and 10287 transitions. Word has length 156 [2021-11-19 15:47:26,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:26,019 INFO L470 AbstractCegarLoop]: Abstraction has 7230 states and 10287 transitions. [2021-11-19 15:47:26,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-19 15:47:26,019 INFO L276 IsEmpty]: Start isEmpty. Operand 7230 states and 10287 transitions. [2021-11-19 15:47:26,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-19 15:47:26,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:26,025 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 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] [2021-11-19 15:47:26,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:26,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:26,248 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:26,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:26,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1724259995, now seen corresponding path program 1 times [2021-11-19 15:47:26,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:26,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955847790] [2021-11-19 15:47:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:26,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:26,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:26,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:26,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:47:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:31,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 4700 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:47:31,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-19 15:47:32,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-19 15:47:33,335 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:33,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955847790] [2021-11-19 15:47:33,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955847790] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:33,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:33,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2021-11-19 15:47:33,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102837289] [2021-11-19 15:47:33,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:33,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:47:33,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:33,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:47:33,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:47:33,338 INFO L87 Difference]: Start difference. First operand 7230 states and 10287 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 15:47:35,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:35,139 INFO L93 Difference]: Finished difference Result 9661 states and 13714 transitions. [2021-11-19 15:47:35,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 15:47:35,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2021-11-19 15:47:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:35,183 INFO L225 Difference]: With dead ends: 9661 [2021-11-19 15:47:35,183 INFO L226 Difference]: Without dead ends: 7593 [2021-11-19 15:47:35,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:47:35,202 INFO L933 BasicCegarLoop]: 4026 mSDtfsCounter, 833 mSDsluCounter, 24340 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 28366 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:35,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [880 Valid, 28366 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 15:47:35,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2021-11-19 15:47:35,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 7240. [2021-11-19 15:47:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7240 states, 4871 states have (on average 1.3239581194826524) internal successors, (6449), 5086 states have internal predecessors, (6449), 1925 states have call successors, (1925), 443 states have call predecessors, (1925), 443 states have return successors, (1925), 1875 states have call predecessors, (1925), 1925 states have call successors, (1925) [2021-11-19 15:47:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7240 states to 7240 states and 10299 transitions. [2021-11-19 15:47:35,636 INFO L78 Accepts]: Start accepts. Automaton has 7240 states and 10299 transitions. Word has length 156 [2021-11-19 15:47:35,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:35,637 INFO L470 AbstractCegarLoop]: Abstraction has 7240 states and 10299 transitions. [2021-11-19 15:47:35,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 15:47:35,637 INFO L276 IsEmpty]: Start isEmpty. Operand 7240 states and 10299 transitions. [2021-11-19 15:47:35,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-19 15:47:35,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:35,648 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:35,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:35,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:35,872 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:35,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:35,873 INFO L85 PathProgramCache]: Analyzing trace with hash -915987370, now seen corresponding path program 1 times [2021-11-19 15:47:35,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:35,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43064376] [2021-11-19 15:47:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:35,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:35,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:35,879 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:35,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:47:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:41,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 4841 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:47:41,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:47:42,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:47:43,983 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:43,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43064376] [2021-11-19 15:47:43,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43064376] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:43,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [50311444] [2021-11-19 15:47:43,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:43,984 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:47:43,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:47:43,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:47:43,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 15:47:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:46,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 4841 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:47:46,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:47:48,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:47:49,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [50311444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:49,518 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:47:49,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:47:49,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331487638] [2021-11-19 15:47:49,518 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:49,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:47:49,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:49,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:47:49,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:47:49,521 INFO L87 Difference]: Start difference. First operand 7240 states and 10299 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:47:51,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:48:00,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:00,462 INFO L93 Difference]: Finished difference Result 14455 states and 20684 transitions. [2021-11-19 15:48:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:48:00,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 216 [2021-11-19 15:48:00,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:00,503 INFO L225 Difference]: With dead ends: 14455 [2021-11-19 15:48:00,503 INFO L226 Difference]: Without dead ends: 7240 [2021-11-19 15:48:00,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 850 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:48:00,551 INFO L933 BasicCegarLoop]: 3969 mSDtfsCounter, 6295 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 1440 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6295 SdHoareTripleChecker+Valid, 6477 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1440 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:00,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6295 Valid, 6477 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1440 Valid, 1462 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2021-11-19 15:48:00,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2021-11-19 15:48:00,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 7240. [2021-11-19 15:48:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7240 states, 4871 states have (on average 1.3233422295216588) internal successors, (6446), 5086 states have internal predecessors, (6446), 1925 states have call successors, (1925), 443 states have call predecessors, (1925), 443 states have return successors, (1925), 1875 states have call predecessors, (1925), 1925 states have call successors, (1925) [2021-11-19 15:48:00,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7240 states to 7240 states and 10296 transitions. [2021-11-19 15:48:00,997 INFO L78 Accepts]: Start accepts. Automaton has 7240 states and 10296 transitions. Word has length 216 [2021-11-19 15:48:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:00,999 INFO L470 AbstractCegarLoop]: Abstraction has 7240 states and 10296 transitions. [2021-11-19 15:48:00,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:48:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 7240 states and 10296 transitions. [2021-11-19 15:48:01,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-19 15:48:01,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:01,012 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:48:01,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:01,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:01,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:01,428 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:48:01,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:01,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1182194276, now seen corresponding path program 1 times [2021-11-19 15:48:01,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:48:01,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109480440] [2021-11-19 15:48:01,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:01,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:48:01,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:48:01,437 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:48:01,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:48:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:07,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 4842 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:48:07,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:08,425 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:48:08,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:48:09,748 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:09,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109480440] [2021-11-19 15:48:09,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109480440] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:48:09,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [655782515] [2021-11-19 15:48:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:09,749 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:09,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:48:09,750 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:48:09,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-19 15:48:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:12,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 4842 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:48:12,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:48:14,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:48:15,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [655782515] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:48:15,158 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:48:15,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:48:15,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176215890] [2021-11-19 15:48:15,158 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:48:15,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:48:15,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:48:15,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:48:15,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:48:15,161 INFO L87 Difference]: Start difference. First operand 7240 states and 10296 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:48:17,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:48:25,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:25,545 INFO L93 Difference]: Finished difference Result 14455 states and 20678 transitions. [2021-11-19 15:48:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:48:25,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 217 [2021-11-19 15:48:25,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:25,587 INFO L225 Difference]: With dead ends: 14455 [2021-11-19 15:48:25,587 INFO L226 Difference]: Without dead ends: 7240 [2021-11-19 15:48:25,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:48:25,620 INFO L933 BasicCegarLoop]: 3968 mSDtfsCounter, 3864 mSDsluCounter, 2507 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3864 SdHoareTripleChecker+Valid, 6475 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:25,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3864 Valid, 6475 Invalid, 1493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 1462 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2021-11-19 15:48:25,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2021-11-19 15:48:26,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 7240. [2021-11-19 15:48:26,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7240 states, 4871 states have (on average 1.3227263395606652) internal successors, (6443), 5086 states have internal predecessors, (6443), 1925 states have call successors, (1925), 443 states have call predecessors, (1925), 443 states have return successors, (1925), 1875 states have call predecessors, (1925), 1925 states have call successors, (1925) [2021-11-19 15:48:26,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7240 states to 7240 states and 10293 transitions. [2021-11-19 15:48:26,067 INFO L78 Accepts]: Start accepts. Automaton has 7240 states and 10293 transitions. Word has length 217 [2021-11-19 15:48:26,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:26,069 INFO L470 AbstractCegarLoop]: Abstraction has 7240 states and 10293 transitions. [2021-11-19 15:48:26,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:48:26,070 INFO L276 IsEmpty]: Start isEmpty. Operand 7240 states and 10293 transitions. [2021-11-19 15:48:26,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-19 15:48:26,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:26,081 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:48:26,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:26,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:26,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:48:26,509 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:48:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash -730157166, now seen corresponding path program 1 times [2021-11-19 15:48:26,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:48:26,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749852867] [2021-11-19 15:48:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:26,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:48:26,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:48:26,515 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:48:26,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:48:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:31,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 4843 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:48:31,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:48:33,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:48:34,353 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:34,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749852867] [2021-11-19 15:48:34,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749852867] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:48:34,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [234197237] [2021-11-19 15:48:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:34,354 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:48:34,355 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:48:34,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 15:48:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:36,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 4843 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:48:36,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:48:38,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:48:39,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [234197237] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:48:39,958 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:48:39,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:48:39,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116328060] [2021-11-19 15:48:39,959 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:48:39,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:48:39,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:48:39,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:48:39,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:48:39,960 INFO L87 Difference]: Start difference. First operand 7240 states and 10293 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:48:42,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:48:50,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:50,577 INFO L93 Difference]: Finished difference Result 14455 states and 20672 transitions. [2021-11-19 15:48:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:48:50,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 218 [2021-11-19 15:48:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:50,625 INFO L225 Difference]: With dead ends: 14455 [2021-11-19 15:48:50,625 INFO L226 Difference]: Without dead ends: 7240 [2021-11-19 15:48:50,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:48:50,659 INFO L933 BasicCegarLoop]: 3967 mSDtfsCounter, 6289 mSDsluCounter, 2506 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 1440 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6289 SdHoareTripleChecker+Valid, 6473 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1440 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:50,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6289 Valid, 6473 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1440 Valid, 1462 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2021-11-19 15:48:50,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2021-11-19 15:48:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 7240. [2021-11-19 15:48:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7240 states, 4871 states have (on average 1.3221104495996716) internal successors, (6440), 5086 states have internal predecessors, (6440), 1925 states have call successors, (1925), 443 states have call predecessors, (1925), 443 states have return successors, (1925), 1875 states have call predecessors, (1925), 1925 states have call successors, (1925) [2021-11-19 15:48:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7240 states to 7240 states and 10290 transitions. [2021-11-19 15:48:51,168 INFO L78 Accepts]: Start accepts. Automaton has 7240 states and 10290 transitions. Word has length 218 [2021-11-19 15:48:51,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:51,169 INFO L470 AbstractCegarLoop]: Abstraction has 7240 states and 10290 transitions. [2021-11-19 15:48:51,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:48:51,170 INFO L276 IsEmpty]: Start isEmpty. Operand 7240 states and 10290 transitions. [2021-11-19 15:48:51,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-19 15:48:51,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:51,181 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:48:51,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:51,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:51,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:51,604 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:48:51,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:51,605 INFO L85 PathProgramCache]: Analyzing trace with hash 512607960, now seen corresponding path program 1 times [2021-11-19 15:48:51,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:48:51,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941810689] [2021-11-19 15:48:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:51,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:48:51,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:48:51,611 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:48:51,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:48:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:57,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 4844 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:48:57,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:48:58,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:48:59,620 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:59,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941810689] [2021-11-19 15:48:59,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941810689] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:48:59,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [463224288] [2021-11-19 15:48:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:59,621 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:59,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:48:59,622 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:48:59,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 15:49:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:02,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 4844 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:49:02,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:49:03,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:05,084 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:49:05,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [463224288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:05,084 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:49:05,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:49:05,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417444420] [2021-11-19 15:49:05,085 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:05,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:49:05,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:05,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:49:05,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:49:05,087 INFO L87 Difference]: Start difference. First operand 7240 states and 10290 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:49:07,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:49:15,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:15,300 INFO L93 Difference]: Finished difference Result 14455 states and 20666 transitions. [2021-11-19 15:49:15,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:49:15,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 219 [2021-11-19 15:49:15,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:15,336 INFO L225 Difference]: With dead ends: 14455 [2021-11-19 15:49:15,336 INFO L226 Difference]: Without dead ends: 7240 [2021-11-19 15:49:15,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 862 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:49:15,371 INFO L933 BasicCegarLoop]: 3966 mSDtfsCounter, 3862 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3862 SdHoareTripleChecker+Valid, 6471 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:15,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3862 Valid, 6471 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1462 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2021-11-19 15:49:15,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2021-11-19 15:49:15,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 7240. [2021-11-19 15:49:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7240 states, 4871 states have (on average 1.3214945596386778) internal successors, (6437), 5086 states have internal predecessors, (6437), 1925 states have call successors, (1925), 443 states have call predecessors, (1925), 443 states have return successors, (1925), 1875 states have call predecessors, (1925), 1925 states have call successors, (1925) [2021-11-19 15:49:16,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7240 states to 7240 states and 10287 transitions. [2021-11-19 15:49:16,017 INFO L78 Accepts]: Start accepts. Automaton has 7240 states and 10287 transitions. Word has length 219 [2021-11-19 15:49:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:16,021 INFO L470 AbstractCegarLoop]: Abstraction has 7240 states and 10287 transitions. [2021-11-19 15:49:16,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:49:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 7240 states and 10287 transitions. [2021-11-19 15:49:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-19 15:49:16,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:16,033 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:16,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:16,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:16,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:16,458 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:16,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:16,458 INFO L85 PathProgramCache]: Analyzing trace with hash 498137806, now seen corresponding path program 1 times [2021-11-19 15:49:16,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:16,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113969123] [2021-11-19 15:49:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:16,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:16,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:16,468 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:16,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 15:49:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:21,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 4845 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:49:21,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:49:23,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:49:24,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:24,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113969123] [2021-11-19 15:49:24,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113969123] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:49:24,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [538917736] [2021-11-19 15:49:24,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:24,494 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:49:24,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:49:24,495 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:49:24,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-19 15:49:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:27,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 4845 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:49:27,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:49:28,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:49:30,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [538917736] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:30,057 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:49:30,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:49:30,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461548448] [2021-11-19 15:49:30,058 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:30,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:49:30,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:30,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:49:30,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:49:30,061 INFO L87 Difference]: Start difference. First operand 7240 states and 10287 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:49:32,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:49:40,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:40,159 INFO L93 Difference]: Finished difference Result 14455 states and 20660 transitions. [2021-11-19 15:49:40,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:49:40,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 220 [2021-11-19 15:49:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:40,194 INFO L225 Difference]: With dead ends: 14455 [2021-11-19 15:49:40,194 INFO L226 Difference]: Without dead ends: 7240 [2021-11-19 15:49:40,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 866 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:49:40,229 INFO L933 BasicCegarLoop]: 3965 mSDtfsCounter, 3861 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3861 SdHoareTripleChecker+Valid, 6469 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:40,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3861 Valid, 6469 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1462 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2021-11-19 15:49:40,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2021-11-19 15:49:40,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 7240. [2021-11-19 15:49:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7240 states, 4871 states have (on average 1.3208786696776842) internal successors, (6434), 5086 states have internal predecessors, (6434), 1925 states have call successors, (1925), 443 states have call predecessors, (1925), 443 states have return successors, (1925), 1875 states have call predecessors, (1925), 1925 states have call successors, (1925) [2021-11-19 15:49:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7240 states to 7240 states and 10284 transitions. [2021-11-19 15:49:40,939 INFO L78 Accepts]: Start accepts. Automaton has 7240 states and 10284 transitions. Word has length 220 [2021-11-19 15:49:40,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:40,941 INFO L470 AbstractCegarLoop]: Abstraction has 7240 states and 10284 transitions. [2021-11-19 15:49:40,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:49:40,941 INFO L276 IsEmpty]: Start isEmpty. Operand 7240 states and 10284 transitions. [2021-11-19 15:49:40,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-19 15:49:40,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:40,956 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:41,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:41,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:41,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:49:41,380 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:41,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:41,381 INFO L85 PathProgramCache]: Analyzing trace with hash 164079636, now seen corresponding path program 1 times [2021-11-19 15:49:41,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:41,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538099075] [2021-11-19 15:49:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:41,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:41,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:41,387 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:41,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 15:49:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:46,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 4846 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:49:46,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:49:48,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:49:49,413 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:49,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538099075] [2021-11-19 15:49:49,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538099075] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:49:49,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1735778040] [2021-11-19 15:49:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:49,414 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:49:49,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:49:49,414 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:49:49,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 15:49:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:52,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 4846 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:49:52,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:49:53,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:49:54,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1735778040] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:54,959 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:49:54,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:49:54,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821944933] [2021-11-19 15:49:54,960 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:54,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:49:54,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:54,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:49:54,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:49:54,962 INFO L87 Difference]: Start difference. First operand 7240 states and 10284 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:49:57,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:50:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:05,102 INFO L93 Difference]: Finished difference Result 14455 states and 20654 transitions. [2021-11-19 15:50:05,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:50:05,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 221 [2021-11-19 15:50:05,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:05,127 INFO L225 Difference]: With dead ends: 14455 [2021-11-19 15:50:05,127 INFO L226 Difference]: Without dead ends: 7240 [2021-11-19 15:50:05,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:50:05,152 INFO L933 BasicCegarLoop]: 3964 mSDtfsCounter, 3860 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3860 SdHoareTripleChecker+Valid, 6467 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:05,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3860 Valid, 6467 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1462 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2021-11-19 15:50:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2021-11-19 15:50:05,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 7240. [2021-11-19 15:50:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7240 states, 4871 states have (on average 1.3202627797166906) internal successors, (6431), 5086 states have internal predecessors, (6431), 1925 states have call successors, (1925), 443 states have call predecessors, (1925), 443 states have return successors, (1925), 1875 states have call predecessors, (1925), 1925 states have call successors, (1925) [2021-11-19 15:50:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7240 states to 7240 states and 10281 transitions. [2021-11-19 15:50:05,765 INFO L78 Accepts]: Start accepts. Automaton has 7240 states and 10281 transitions. Word has length 221 [2021-11-19 15:50:05,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:05,766 INFO L470 AbstractCegarLoop]: Abstraction has 7240 states and 10281 transitions. [2021-11-19 15:50:05,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:50:05,766 INFO L276 IsEmpty]: Start isEmpty. Operand 7240 states and 10281 transitions. [2021-11-19 15:50:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-19 15:50:05,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:05,778 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:05,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:06,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-19 15:50:06,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:06,204 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:06,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:06,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1487272438, now seen corresponding path program 1 times [2021-11-19 15:50:06,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:06,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771594737] [2021-11-19 15:50:06,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:06,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:06,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:06,211 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:06,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 15:50:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:11,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 4847 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:50:11,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:50:12,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:50:14,011 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:14,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771594737] [2021-11-19 15:50:14,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771594737] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:14,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1140230616] [2021-11-19 15:50:14,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:14,012 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:14,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:50:14,013 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:50:14,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 15:50:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:16,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 4847 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:50:16,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:50:18,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:50:19,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1140230616] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:19,161 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:50:19,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:50:19,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814793500] [2021-11-19 15:50:19,161 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:19,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:50:19,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:19,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:50:19,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:50:19,164 INFO L87 Difference]: Start difference. First operand 7240 states and 10281 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:50:21,602 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:50:35,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:35,298 INFO L93 Difference]: Finished difference Result 17969 states and 25602 transitions. [2021-11-19 15:50:35,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:50:35,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 222 [2021-11-19 15:50:35,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:35,364 INFO L225 Difference]: With dead ends: 17969 [2021-11-19 15:50:35,364 INFO L226 Difference]: Without dead ends: 10754 [2021-11-19 15:50:35,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 874 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:50:35,396 INFO L933 BasicCegarLoop]: 5598 mSDtfsCounter, 5489 mSDsluCounter, 4689 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5489 SdHoareTripleChecker+Valid, 10287 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:35,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5489 Valid, 10287 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2912 Invalid, 1 Unknown, 0 Unchecked, 15.3s Time] [2021-11-19 15:50:35,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10754 states. [2021-11-19 15:50:36,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10754 to 10746. [2021-11-19 15:50:36,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10746 states, 7157 states have (on average 1.311862512225793) internal successors, (9389), 7471 states have internal predecessors, (9389), 2873 states have call successors, (2873), 733 states have call predecessors, (2873), 715 states have return successors, (2912), 2787 states have call predecessors, (2912), 2873 states have call successors, (2912) [2021-11-19 15:50:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10746 states to 10746 states and 15174 transitions. [2021-11-19 15:50:36,433 INFO L78 Accepts]: Start accepts. Automaton has 10746 states and 15174 transitions. Word has length 222 [2021-11-19 15:50:36,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:36,434 INFO L470 AbstractCegarLoop]: Abstraction has 10746 states and 15174 transitions. [2021-11-19 15:50:36,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:50:36,435 INFO L276 IsEmpty]: Start isEmpty. Operand 10746 states and 15174 transitions. [2021-11-19 15:50:36,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-19 15:50:36,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:36,448 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:36,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:36,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-19 15:50:36,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:36,873 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:36,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:36,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1025062576, now seen corresponding path program 1 times [2021-11-19 15:50:36,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:36,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218472712] [2021-11-19 15:50:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:36,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:36,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:36,880 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:36,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 15:50:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:42,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 4848 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:50:42,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:50:43,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:50:44,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:44,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218472712] [2021-11-19 15:50:44,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218472712] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:44,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [342884028] [2021-11-19 15:50:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:44,891 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:44,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:50:44,892 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:50:44,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 15:50:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:47,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 4848 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:50:47,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:50:48,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:49,931 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:50:49,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [342884028] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:49,931 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:50:49,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:50:49,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717002767] [2021-11-19 15:50:49,933 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:49,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:50:49,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:49,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:50:49,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:50:49,935 INFO L87 Difference]: Start difference. First operand 10746 states and 15174 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:50:52,325 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:51:00,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:00,160 INFO L93 Difference]: Finished difference Result 21467 states and 30380 transitions. [2021-11-19 15:51:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:51:00,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 223 [2021-11-19 15:51:00,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:00,212 INFO L225 Difference]: With dead ends: 21467 [2021-11-19 15:51:00,213 INFO L226 Difference]: Without dead ends: 10746 [2021-11-19 15:51:00,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:51:00,255 INFO L933 BasicCegarLoop]: 3963 mSDtfsCounter, 3859 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3859 SdHoareTripleChecker+Valid, 6465 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:00,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3859 Valid, 6465 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1462 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2021-11-19 15:51:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10746 states. [2021-11-19 15:51:01,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10746 to 10746. [2021-11-19 15:51:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10746 states, 7157 states have (on average 1.3114433421824787) internal successors, (9386), 7471 states have internal predecessors, (9386), 2873 states have call successors, (2873), 733 states have call predecessors, (2873), 715 states have return successors, (2912), 2787 states have call predecessors, (2912), 2873 states have call successors, (2912) [2021-11-19 15:51:01,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10746 states to 10746 states and 15171 transitions. [2021-11-19 15:51:01,167 INFO L78 Accepts]: Start accepts. Automaton has 10746 states and 15171 transitions. Word has length 223 [2021-11-19 15:51:01,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:01,168 INFO L470 AbstractCegarLoop]: Abstraction has 10746 states and 15171 transitions. [2021-11-19 15:51:01,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:51:01,168 INFO L276 IsEmpty]: Start isEmpty. Operand 10746 states and 15171 transitions. [2021-11-19 15:51:01,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-19 15:51:01,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:01,176 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:01,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:01,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-19 15:51:01,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:01,577 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash 533057862, now seen corresponding path program 1 times [2021-11-19 15:51:01,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:01,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376795425] [2021-11-19 15:51:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:01,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:01,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:01,583 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:01,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 15:51:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:06,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 4849 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:51:06,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:51:07,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:51:08,773 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:08,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376795425] [2021-11-19 15:51:08,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376795425] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:08,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [615915565] [2021-11-19 15:51:08,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:08,773 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:08,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:08,774 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:08,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 15:51:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:11,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 4849 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:51:11,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:51:12,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:51:13,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [615915565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:13,693 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:51:13,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:51:13,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627570468] [2021-11-19 15:51:13,694 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:13,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:51:13,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:13,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:51:13,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:51:13,695 INFO L87 Difference]: Start difference. First operand 10746 states and 15171 transitions. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:51:16,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:51:23,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:23,941 INFO L93 Difference]: Finished difference Result 21969 states and 30938 transitions. [2021-11-19 15:51:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:51:23,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 224 [2021-11-19 15:51:23,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:23,979 INFO L225 Difference]: With dead ends: 21969 [2021-11-19 15:51:23,979 INFO L226 Difference]: Without dead ends: 11248 [2021-11-19 15:51:24,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:51:24,002 INFO L933 BasicCegarLoop]: 4068 mSDtfsCounter, 3962 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 1619 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3962 SdHoareTripleChecker+Valid, 6704 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1619 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:24,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3962 Valid, 6704 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1619 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2021-11-19 15:51:24,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11248 states. [2021-11-19 15:51:24,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11248 to 11248. [2021-11-19 15:51:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11248 states, 7429 states have (on average 1.3007134203795936) internal successors, (9663), 7745 states have internal predecessors, (9663), 3015 states have call successors, (3015), 821 states have call predecessors, (3015), 803 states have return successors, (3054), 2929 states have call predecessors, (3054), 3015 states have call successors, (3054) [2021-11-19 15:51:24,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11248 states to 11248 states and 15732 transitions. [2021-11-19 15:51:24,764 INFO L78 Accepts]: Start accepts. Automaton has 11248 states and 15732 transitions. Word has length 224 [2021-11-19 15:51:24,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:24,765 INFO L470 AbstractCegarLoop]: Abstraction has 11248 states and 15732 transitions. [2021-11-19 15:51:24,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:51:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 11248 states and 15732 transitions. [2021-11-19 15:51:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-19 15:51:24,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:24,774 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:24,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-19 15:51:25,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:25,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:25,195 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:25,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1704667788, now seen corresponding path program 1 times [2021-11-19 15:51:25,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:25,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489912648] [2021-11-19 15:51:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:25,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:25,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:25,200 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:25,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 15:51:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:29,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 4850 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:51:29,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:51:30,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:51:32,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:32,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489912648] [2021-11-19 15:51:32,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489912648] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:32,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1293891367] [2021-11-19 15:51:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:32,090 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:32,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:32,091 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:32,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-19 15:51:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:34,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 4850 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:51:34,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:51:35,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:51:36,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1293891367] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:36,789 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:51:36,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:51:36,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86138949] [2021-11-19 15:51:36,789 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:36,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:51:36,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:36,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:51:36,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:51:36,791 INFO L87 Difference]: Start difference. First operand 11248 states and 15732 transitions. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:51:39,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:51:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:47,002 INFO L93 Difference]: Finished difference Result 22471 states and 31496 transitions. [2021-11-19 15:51:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:51:47,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 225 [2021-11-19 15:51:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:47,036 INFO L225 Difference]: With dead ends: 22471 [2021-11-19 15:51:47,036 INFO L226 Difference]: Without dead ends: 11248 [2021-11-19 15:51:47,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 886 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:51:47,066 INFO L933 BasicCegarLoop]: 3961 mSDtfsCounter, 6270 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 1440 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6270 SdHoareTripleChecker+Valid, 6461 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1440 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:47,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6270 Valid, 6461 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1440 Valid, 1462 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2021-11-19 15:51:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11248 states. [2021-11-19 15:51:47,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11248 to 11248. [2021-11-19 15:51:47,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11248 states, 7429 states have (on average 1.3003095975232197) internal successors, (9660), 7745 states have internal predecessors, (9660), 3015 states have call successors, (3015), 821 states have call predecessors, (3015), 803 states have return successors, (3054), 2929 states have call predecessors, (3054), 3015 states have call successors, (3054) [2021-11-19 15:51:48,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11248 states to 11248 states and 15729 transitions. [2021-11-19 15:51:48,008 INFO L78 Accepts]: Start accepts. Automaton has 11248 states and 15729 transitions. Word has length 225 [2021-11-19 15:51:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:48,009 INFO L470 AbstractCegarLoop]: Abstraction has 11248 states and 15729 transitions. [2021-11-19 15:51:48,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:51:48,009 INFO L276 IsEmpty]: Start isEmpty. Operand 11248 states and 15729 transitions. [2021-11-19 15:51:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-19 15:51:48,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:48,018 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:48,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-11-19 15:51:48,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:48,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:48,445 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:48,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:48,446 INFO L85 PathProgramCache]: Analyzing trace with hash -515613566, now seen corresponding path program 1 times [2021-11-19 15:51:48,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:48,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365468210] [2021-11-19 15:51:48,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:48,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:48,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:48,453 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:48,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 15:51:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:53,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 4851 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:51:53,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:51:54,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:51:56,189 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:56,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365468210] [2021-11-19 15:51:56,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365468210] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:56,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [273329491] [2021-11-19 15:51:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:56,190 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:56,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:56,193 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:56,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-19 15:51:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:58,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 4851 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:51:58,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:52:00,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:01,607 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:52:01,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [273329491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:01,607 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:52:01,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:52:01,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788025524] [2021-11-19 15:52:01,609 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:01,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:52:01,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:52:01,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:52:01,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:52:01,611 INFO L87 Difference]: Start difference. First operand 11248 states and 15729 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:52:04,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:11,907 INFO L93 Difference]: Finished difference Result 22471 states and 31490 transitions. [2021-11-19 15:52:11,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:52:11,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 226 [2021-11-19 15:52:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:11,943 INFO L225 Difference]: With dead ends: 22471 [2021-11-19 15:52:11,943 INFO L226 Difference]: Without dead ends: 11248 [2021-11-19 15:52:11,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 890 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:52:11,971 INFO L933 BasicCegarLoop]: 3960 mSDtfsCounter, 3856 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3856 SdHoareTripleChecker+Valid, 6459 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:11,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3856 Valid, 6459 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1462 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2021-11-19 15:52:11,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11248 states. [2021-11-19 15:52:12,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11248 to 11248. [2021-11-19 15:52:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11248 states, 7429 states have (on average 1.299905774666846) internal successors, (9657), 7745 states have internal predecessors, (9657), 3015 states have call successors, (3015), 821 states have call predecessors, (3015), 803 states have return successors, (3054), 2929 states have call predecessors, (3054), 3015 states have call successors, (3054) [2021-11-19 15:52:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11248 states to 11248 states and 15726 transitions. [2021-11-19 15:52:12,776 INFO L78 Accepts]: Start accepts. Automaton has 11248 states and 15726 transitions. Word has length 226 [2021-11-19 15:52:12,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:12,777 INFO L470 AbstractCegarLoop]: Abstraction has 11248 states and 15726 transitions. [2021-11-19 15:52:12,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 3 states have call successors, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:52:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 11248 states and 15726 transitions. [2021-11-19 15:52:12,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-19 15:52:12,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:12,784 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:52:12,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:13,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:13,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:52:13,205 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:52:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:13,205 INFO L85 PathProgramCache]: Analyzing trace with hash -510342200, now seen corresponding path program 1 times [2021-11-19 15:52:13,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:52:13,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530671483] [2021-11-19 15:52:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:13,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:52:13,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:52:13,210 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:52:13,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 15:52:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:17,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 4852 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:52:17,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:52:19,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:52:20,203 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:52:20,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530671483] [2021-11-19 15:52:20,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530671483] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:52:20,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [475069270] [2021-11-19 15:52:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:20,204 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:52:20,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:52:20,205 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:52:20,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-19 15:52:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:22,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 4852 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:52:22,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:52:23,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:52:24,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [475069270] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:24,945 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:52:24,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:52:24,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540976036] [2021-11-19 15:52:24,946 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:24,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:52:24,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:52:24,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:52:24,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:52:24,948 INFO L87 Difference]: Start difference. First operand 11248 states and 15726 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, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:52:27,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:35,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:35,091 INFO L93 Difference]: Finished difference Result 22471 states and 31484 transitions. [2021-11-19 15:52:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:52:35,091 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, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 227 [2021-11-19 15:52:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:35,141 INFO L225 Difference]: With dead ends: 22471 [2021-11-19 15:52:35,141 INFO L226 Difference]: Without dead ends: 11248 [2021-11-19 15:52:35,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:52:35,183 INFO L933 BasicCegarLoop]: 3959 mSDtfsCounter, 3855 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3855 SdHoareTripleChecker+Valid, 6457 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:35,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3855 Valid, 6457 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1462 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-11-19 15:52:35,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11248 states. [2021-11-19 15:52:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11248 to 11248. [2021-11-19 15:52:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11248 states, 7429 states have (on average 1.2995019518104725) internal successors, (9654), 7745 states have internal predecessors, (9654), 3015 states have call successors, (3015), 821 states have call predecessors, (3015), 803 states have return successors, (3054), 2929 states have call predecessors, (3054), 3015 states have call successors, (3054) [2021-11-19 15:52:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11248 states to 11248 states and 15723 transitions. [2021-11-19 15:52:35,986 INFO L78 Accepts]: Start accepts. Automaton has 11248 states and 15723 transitions. Word has length 227 [2021-11-19 15:52:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:35,987 INFO L470 AbstractCegarLoop]: Abstraction has 11248 states and 15723 transitions. [2021-11-19 15:52:35,987 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, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:52:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 11248 states and 15723 transitions. [2021-11-19 15:52:35,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-19 15:52:35,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:35,993 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:52:36,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:36,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:36,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:52:36,394 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:52:36,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:36,395 INFO L85 PathProgramCache]: Analyzing trace with hash -232413250, now seen corresponding path program 1 times [2021-11-19 15:52:36,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:52:36,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445517087] [2021-11-19 15:52:36,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:36,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:52:36,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:52:36,400 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:52:36,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 15:52:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:41,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 4853 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:52:41,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:52:42,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:52:43,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:52:43,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445517087] [2021-11-19 15:52:43,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445517087] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:52:43,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1571904651] [2021-11-19 15:52:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:43,373 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:52:43,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:52:43,382 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:52:43,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-19 15:52:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:45,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 4853 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:52:45,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:52:47,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:52:48,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1571904651] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:48,113 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:52:48,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:52:48,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592343353] [2021-11-19 15:52:48,114 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:48,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:52:48,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:52:48,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:52:48,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:52:48,115 INFO L87 Difference]: Start difference. First operand 11248 states and 15723 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, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:52:50,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:57,959 INFO L93 Difference]: Finished difference Result 22471 states and 31478 transitions. [2021-11-19 15:52:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:52:57,959 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, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 228 [2021-11-19 15:52:57,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:57,992 INFO L225 Difference]: With dead ends: 22471 [2021-11-19 15:52:57,992 INFO L226 Difference]: Without dead ends: 11248 [2021-11-19 15:52:58,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 898 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:52:58,021 INFO L933 BasicCegarLoop]: 3958 mSDtfsCounter, 3854 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3854 SdHoareTripleChecker+Valid, 6455 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:58,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3854 Valid, 6455 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1462 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-19 15:52:58,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11248 states. [2021-11-19 15:52:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11248 to 11248. [2021-11-19 15:52:58,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11248 states, 7429 states have (on average 1.2990981289540988) internal successors, (9651), 7745 states have internal predecessors, (9651), 3015 states have call successors, (3015), 821 states have call predecessors, (3015), 803 states have return successors, (3054), 2929 states have call predecessors, (3054), 3015 states have call successors, (3054) [2021-11-19 15:52:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11248 states to 11248 states and 15720 transitions. [2021-11-19 15:52:58,804 INFO L78 Accepts]: Start accepts. Automaton has 11248 states and 15720 transitions. Word has length 228 [2021-11-19 15:52:58,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:58,804 INFO L470 AbstractCegarLoop]: Abstraction has 11248 states and 15720 transitions. [2021-11-19 15:52:58,804 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, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:52:58,805 INFO L276 IsEmpty]: Start isEmpty. Operand 11248 states and 15720 transitions. [2021-11-19 15:52:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-19 15:52:58,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:58,810 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:52:58,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:59,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-11-19 15:52:59,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:52:59,211 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:52:59,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash -92033788, now seen corresponding path program 1 times [2021-11-19 15:52:59,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:52:59,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115791526] [2021-11-19 15:52:59,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:59,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:52:59,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:52:59,216 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:52:59,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-19 15:53:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:03,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 4854 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:53:03,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:53:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:53:05,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:53:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:53:06,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:53:06,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115791526] [2021-11-19 15:53:06,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115791526] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:53:06,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1357084046] [2021-11-19 15:53:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:06,161 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:53:06,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:53:06,162 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:53:06,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-19 15:53:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:08,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 4854 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:53:08,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:53:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:53:09,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:53:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-19 15:53:10,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1357084046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:53:10,927 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:53:10,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [8, 8] total 12 [2021-11-19 15:53:10,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900246132] [2021-11-19 15:53:10,928 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:10,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:53:10,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:53:10,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:53:10,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:53:10,929 INFO L87 Difference]: Start difference. First operand 11248 states and 15720 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, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:53:13,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:53:22,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:22,275 INFO L93 Difference]: Finished difference Result 24117 states and 33481 transitions. [2021-11-19 15:53:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:53:22,276 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, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) Word has length 229 [2021-11-19 15:53:22,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:22,308 INFO L225 Difference]: With dead ends: 24117 [2021-11-19 15:53:22,308 INFO L226 Difference]: Without dead ends: 12894 [2021-11-19 15:53:22,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:53:22,331 INFO L933 BasicCegarLoop]: 4541 mSDtfsCounter, 6676 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 1292 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6676 SdHoareTripleChecker+Valid, 7416 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1292 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:22,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6676 Valid, 7416 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1292 Valid, 1667 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2021-11-19 15:53:22,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12894 states. [2021-11-19 15:53:23,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12894 to 12883. [2021-11-19 15:53:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12883 states, 8522 states have (on average 1.2839708988500351) internal successors, (10942), 8853 states have internal predecessors, (10942), 3333 states have call successors, (3333), 1057 states have call predecessors, (3333), 1027 states have return successors, (3441), 3229 states have call predecessors, (3441), 3333 states have call successors, (3441) [2021-11-19 15:53:23,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12883 states to 12883 states and 17716 transitions. [2021-11-19 15:53:23,246 INFO L78 Accepts]: Start accepts. Automaton has 12883 states and 17716 transitions. Word has length 229 [2021-11-19 15:53:23,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:23,247 INFO L470 AbstractCegarLoop]: Abstraction has 12883 states and 17716 transitions. [2021-11-19 15:53:23,247 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, (54), 3 states have call predecessors, (54), 4 states have return successors, (48), 4 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:53:23,248 INFO L276 IsEmpty]: Start isEmpty. Operand 12883 states and 17716 transitions. [2021-11-19 15:53:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-19 15:53:23,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:23,253 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:53:23,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-11-19 15:53:23,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-19 15:53:23,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:53:23,654 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:53:23,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:23,655 INFO L85 PathProgramCache]: Analyzing trace with hash -63404637, now seen corresponding path program 1 times [2021-11-19 15:53:23,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:53:23,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453032134] [2021-11-19 15:53:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:23,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:53:23,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:53:23,659 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:53:23,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-19 15:53:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:28,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 4854 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:53:28,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:53:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 15:53:29,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:53:30,589 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-11-19 15:53:30,589 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:53:30,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453032134] [2021-11-19 15:53:30,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453032134] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:53:30,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [911787324] [2021-11-19 15:53:30,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:30,590 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:53:30,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:53:30,590 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:53:30,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-19 15:53:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:43,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 4854 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 15:53:43,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:53:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-11-19 15:53:44,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:53:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-11-19 15:53:45,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [911787324] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:53:45,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:53:45,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8, 6] total 13 [2021-11-19 15:53:45,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249854434] [2021-11-19 15:53:45,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:45,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:53:45,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:53:45,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:53:45,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:53:45,442 INFO L87 Difference]: Start difference. First operand 12883 states and 17716 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-19 15:53:46,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:53:46,598 INFO L93 Difference]: Finished difference Result 25918 states and 35652 transitions. [2021-11-19 15:53:46,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:53:46,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 229 [2021-11-19 15:53:46,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:53:46,634 INFO L225 Difference]: With dead ends: 25918 [2021-11-19 15:53:46,634 INFO L226 Difference]: Without dead ends: 13060 [2021-11-19 15:53:46,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 901 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:53:46,660 INFO L933 BasicCegarLoop]: 4220 mSDtfsCounter, 248 mSDsluCounter, 16550 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 20770 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:53:46,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 20770 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:53:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13060 states. [2021-11-19 15:53:47,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13060 to 12883. [2021-11-19 15:53:47,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12883 states, 8522 states have (on average 1.283853555503403) internal successors, (10941), 8852 states have internal predecessors, (10941), 3333 states have call successors, (3333), 1057 states have call predecessors, (3333), 1027 states have return successors, (3441), 3229 states have call predecessors, (3441), 3333 states have call successors, (3441) [2021-11-19 15:53:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12883 states to 12883 states and 17715 transitions. [2021-11-19 15:53:47,621 INFO L78 Accepts]: Start accepts. Automaton has 12883 states and 17715 transitions. Word has length 229 [2021-11-19 15:53:47,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:53:47,621 INFO L470 AbstractCegarLoop]: Abstraction has 12883 states and 17715 transitions. [2021-11-19 15:53:47,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-19 15:53:47,621 INFO L276 IsEmpty]: Start isEmpty. Operand 12883 states and 17715 transitions. [2021-11-19 15:53:47,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-19 15:53:47,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:53:47,627 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:53:47,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2021-11-19 15:53:47,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-19 15:53:48,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:53:48,028 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:53:48,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:53:48,029 INFO L85 PathProgramCache]: Analyzing trace with hash 370046438, now seen corresponding path program 1 times [2021-11-19 15:53:48,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:53:48,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143878983] [2021-11-19 15:53:48,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:53:48,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:53:48,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:53:48,033 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:53:48,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-19 15:53:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:53:53,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 4865 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:53:53,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:53:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-19 15:53:54,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:53:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-19 15:53:56,776 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:53:56,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143878983] [2021-11-19 15:53:56,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143878983] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:53:56,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:53:56,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 25 [2021-11-19 15:53:56,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869338794] [2021-11-19 15:53:56,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:53:56,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 15:53:56,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:53:56,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 15:53:56,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-11-19 15:53:56,778 INFO L87 Difference]: Start difference. First operand 12883 states and 17715 transitions. Second operand has 14 states, 13 states have (on average 8.538461538461538) internal successors, (111), 12 states have internal predecessors, (111), 5 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-19 15:54:01,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:01,299 INFO L93 Difference]: Finished difference Result 25795 states and 35490 transitions. [2021-11-19 15:54:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 15:54:01,299 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.538461538461538) internal successors, (111), 12 states have internal predecessors, (111), 5 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) Word has length 233 [2021-11-19 15:54:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:01,348 INFO L225 Difference]: With dead ends: 25795 [2021-11-19 15:54:01,348 INFO L226 Difference]: Without dead ends: 12939 [2021-11-19 15:54:01,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 15:54:01,390 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 761 mSDsluCounter, 49757 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 53992 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:01,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 53992 Invalid, 997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [237 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 15:54:01,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12939 states. [2021-11-19 15:54:02,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12939 to 12670. [2021-11-19 15:54:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12670 states, 8376 states have (on average 1.2831900668576885) internal successors, (10748), 8700 states have internal predecessors, (10748), 3278 states have call successors, (3278), 1045 states have call predecessors, (3278), 1015 states have return successors, (3386), 3177 states have call predecessors, (3386), 3278 states have call successors, (3386) [2021-11-19 15:54:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12670 states to 12670 states and 17412 transitions. [2021-11-19 15:54:02,436 INFO L78 Accepts]: Start accepts. Automaton has 12670 states and 17412 transitions. Word has length 233 [2021-11-19 15:54:02,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:02,437 INFO L470 AbstractCegarLoop]: Abstraction has 12670 states and 17412 transitions. [2021-11-19 15:54:02,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.538461538461538) internal successors, (111), 12 states have internal predecessors, (111), 5 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-19 15:54:02,437 INFO L276 IsEmpty]: Start isEmpty. Operand 12670 states and 17412 transitions. [2021-11-19 15:54:02,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-19 15:54:02,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:02,444 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:54:02,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-19 15:54:02,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:54:02,668 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:54:02,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:02,669 INFO L85 PathProgramCache]: Analyzing trace with hash 582792527, now seen corresponding path program 1 times [2021-11-19 15:54:02,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:54:02,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965890819] [2021-11-19 15:54:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:02,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:54:02,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:54:02,676 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:54:02,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-19 15:54:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:07,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 4902 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:54:07,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:54:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-19 15:54:08,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:54:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-19 15:54:08,764 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:54:08,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965890819] [2021-11-19 15:54:08,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965890819] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:08,764 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:08,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-19 15:54:08,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851984438] [2021-11-19 15:54:08,765 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:08,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:54:08,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:54:08,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:54:08,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:54:08,766 INFO L87 Difference]: Start difference. First operand 12670 states and 17412 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:54:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:09,631 INFO L93 Difference]: Finished difference Result 20769 states and 28520 transitions. [2021-11-19 15:54:09,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:54:09,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 215 [2021-11-19 15:54:09,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:09,661 INFO L225 Difference]: With dead ends: 20769 [2021-11-19 15:54:09,661 INFO L226 Difference]: Without dead ends: 12644 [2021-11-19 15:54:09,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:54:09,678 INFO L933 BasicCegarLoop]: 3942 mSDtfsCounter, 3925 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3925 SdHoareTripleChecker+Valid, 3942 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:09,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3925 Valid, 3942 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:54:09,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12644 states. [2021-11-19 15:54:10,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12644 to 12644. [2021-11-19 15:54:10,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12644 states, 8357 states have (on average 1.283355271030274) internal successors, (10725), 8681 states have internal predecessors, (10725), 3272 states have call successors, (3272), 1044 states have call predecessors, (3272), 1014 states have return successors, (3380), 3171 states have call predecessors, (3380), 3272 states have call successors, (3380) [2021-11-19 15:54:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12644 states to 12644 states and 17377 transitions. [2021-11-19 15:54:10,825 INFO L78 Accepts]: Start accepts. Automaton has 12644 states and 17377 transitions. Word has length 215 [2021-11-19 15:54:10,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:10,825 INFO L470 AbstractCegarLoop]: Abstraction has 12644 states and 17377 transitions. [2021-11-19 15:54:10,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-19 15:54:10,825 INFO L276 IsEmpty]: Start isEmpty. Operand 12644 states and 17377 transitions. [2021-11-19 15:54:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-19 15:54:10,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:10,829 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:10,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-19 15:54:11,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:54:11,030 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:54:11,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:11,030 INFO L85 PathProgramCache]: Analyzing trace with hash 245882906, now seen corresponding path program 1 times [2021-11-19 15:54:11,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:54:11,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020044048] [2021-11-19 15:54:11,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:11,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:54:11,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:54:11,035 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:54:11,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-19 15:54:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:16,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 4917 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:54:16,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:54:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2021-11-19 15:54:16,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:54:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2021-11-19 15:54:17,462 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:54:17,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020044048] [2021-11-19 15:54:17,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020044048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:17,463 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:17,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-11-19 15:54:17,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071354980] [2021-11-19 15:54:17,463 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:17,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:54:17,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:54:17,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:54:17,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:54:17,464 INFO L87 Difference]: Start difference. First operand 12644 states and 17377 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 15:54:19,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:19,725 INFO L93 Difference]: Finished difference Result 25301 states and 34795 transitions. [2021-11-19 15:54:19,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 15:54:19,727 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 254 [2021-11-19 15:54:19,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:19,764 INFO L225 Difference]: With dead ends: 25301 [2021-11-19 15:54:19,764 INFO L226 Difference]: Without dead ends: 12674 [2021-11-19 15:54:19,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:54:19,799 INFO L933 BasicCegarLoop]: 3904 mSDtfsCounter, 34 mSDsluCounter, 27224 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 31128 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:19,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 31128 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 15:54:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12674 states. [2021-11-19 15:54:20,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12674 to 12653. [2021-11-19 15:54:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12653 states, 8366 states have (on average 1.283050442266316) internal successors, (10734), 8690 states have internal predecessors, (10734), 3272 states have call successors, (3272), 1044 states have call predecessors, (3272), 1014 states have return successors, (3380), 3171 states have call predecessors, (3380), 3272 states have call successors, (3380) [2021-11-19 15:54:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12653 states to 12653 states and 17386 transitions. [2021-11-19 15:54:20,810 INFO L78 Accepts]: Start accepts. Automaton has 12653 states and 17386 transitions. Word has length 254 [2021-11-19 15:54:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:20,810 INFO L470 AbstractCegarLoop]: Abstraction has 12653 states and 17386 transitions. [2021-11-19 15:54:20,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 15:54:20,811 INFO L276 IsEmpty]: Start isEmpty. Operand 12653 states and 17386 transitions. [2021-11-19 15:54:20,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-19 15:54:20,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:20,816 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:20,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-11-19 15:54:21,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:54:21,017 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:54:21,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:21,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1689198302, now seen corresponding path program 1 times [2021-11-19 15:54:21,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:54:21,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516222691] [2021-11-19 15:54:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:21,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:54:21,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:54:21,022 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:54:21,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-19 15:54:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:26,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 5027 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-19 15:54:26,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:54:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2021-11-19 15:54:27,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:54:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 80 proven. 3 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2021-11-19 15:54:30,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:54:30,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516222691] [2021-11-19 15:54:30,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516222691] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:54:30,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:54:30,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-19 15:54:30,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563700809] [2021-11-19 15:54:30,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:30,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:54:30,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:54:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:54:30,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-19 15:54:30,331 INFO L87 Difference]: Start difference. First operand 12653 states and 17386 transitions. Second operand has 12 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 4 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 6 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 15:54:33,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:33,991 INFO L93 Difference]: Finished difference Result 25319 states and 34809 transitions. [2021-11-19 15:54:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 15:54:33,992 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 4 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 6 states have call predecessors, (33), 4 states have call successors, (33) Word has length 296 [2021-11-19 15:54:33,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:34,042 INFO L225 Difference]: With dead ends: 25319 [2021-11-19 15:54:34,043 INFO L226 Difference]: Without dead ends: 12683 [2021-11-19 15:54:34,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-11-19 15:54:34,073 INFO L933 BasicCegarLoop]: 3910 mSDtfsCounter, 66 mSDsluCounter, 31134 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 35044 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:34,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 35044 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 15:54:34,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12683 states. [2021-11-19 15:54:35,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12683 to 12653. [2021-11-19 15:54:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12653 states, 8366 states have (on average 1.2826918479560123) internal successors, (10731), 8687 states have internal predecessors, (10731), 3272 states have call successors, (3272), 1044 states have call predecessors, (3272), 1014 states have return successors, (3380), 3171 states have call predecessors, (3380), 3272 states have call successors, (3380) [2021-11-19 15:54:35,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12653 states to 12653 states and 17383 transitions. [2021-11-19 15:54:35,354 INFO L78 Accepts]: Start accepts. Automaton has 12653 states and 17383 transitions. Word has length 296 [2021-11-19 15:54:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:35,354 INFO L470 AbstractCegarLoop]: Abstraction has 12653 states and 17383 transitions. [2021-11-19 15:54:35,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 4 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 6 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 15:54:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 12653 states and 17383 transitions. [2021-11-19 15:54:35,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-19 15:54:35,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:35,361 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:54:35,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-11-19 15:54:35,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:54:35,562 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:54:35,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:35,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1023462363, now seen corresponding path program 1 times [2021-11-19 15:54:35,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:54:35,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106817086] [2021-11-19 15:54:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:35,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:54:35,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:54:35,568 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:54:35,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-19 15:54:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:41,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 5043 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:54:41,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:54:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2021-11-19 15:54:42,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:54:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2021-11-19 15:54:42,555 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:54:42,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106817086] [2021-11-19 15:54:42,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106817086] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:42,555 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:42,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-19 15:54:42,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559675026] [2021-11-19 15:54:42,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:42,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:54:42,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:54:42,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:54:42,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:54:42,556 INFO L87 Difference]: Start difference. First operand 12653 states and 17383 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 1 states have call successors, (34), 1 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2021-11-19 15:54:43,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:43,382 INFO L93 Difference]: Finished difference Result 12673 states and 17414 transitions. [2021-11-19 15:54:43,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:54:43,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 1 states have call successors, (34), 1 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) Word has length 300 [2021-11-19 15:54:43,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:43,426 INFO L225 Difference]: With dead ends: 12673 [2021-11-19 15:54:43,426 INFO L226 Difference]: Without dead ends: 12671 [2021-11-19 15:54:43,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:54:43,434 INFO L933 BasicCegarLoop]: 3948 mSDtfsCounter, 5 mSDsluCounter, 15775 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19723 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:43,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 19723 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:54:43,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12671 states. [2021-11-19 15:54:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12671 to 12653. [2021-11-19 15:54:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12653 states, 8366 states have (on average 1.2823332536457088) internal successors, (10728), 8687 states have internal predecessors, (10728), 3272 states have call successors, (3272), 1044 states have call predecessors, (3272), 1014 states have return successors, (3380), 3171 states have call predecessors, (3380), 3272 states have call successors, (3380) [2021-11-19 15:54:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12653 states to 12653 states and 17380 transitions. [2021-11-19 15:54:44,390 INFO L78 Accepts]: Start accepts. Automaton has 12653 states and 17380 transitions. Word has length 300 [2021-11-19 15:54:44,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:44,391 INFO L470 AbstractCegarLoop]: Abstraction has 12653 states and 17380 transitions. [2021-11-19 15:54:44,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 1 states have call successors, (34), 1 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2021-11-19 15:54:44,391 INFO L276 IsEmpty]: Start isEmpty. Operand 12653 states and 17380 transitions. [2021-11-19 15:54:44,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-19 15:54:44,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:44,399 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:54:44,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-19 15:54:44,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:54:44,600 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:54:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:44,600 INFO L85 PathProgramCache]: Analyzing trace with hash -435885403, now seen corresponding path program 1 times [2021-11-19 15:54:44,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:54:44,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506348378] [2021-11-19 15:54:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:44,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:54:44,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:54:44,606 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:54:44,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-19 15:54:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:54:50,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 5202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:54:50,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:54:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-19 15:54:51,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:54:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-19 15:54:53,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:54:53,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506348378] [2021-11-19 15:54:53,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506348378] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:54:53,032 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:54:53,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-19 15:54:53,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607705825] [2021-11-19 15:54:53,032 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:54:53,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:54:53,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:54:53,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:54:53,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:54:53,034 INFO L87 Difference]: Start difference. First operand 12653 states and 17380 transitions. Second operand has 5 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 4 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2021-11-19 15:54:54,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:54:54,069 INFO L93 Difference]: Finished difference Result 25289 states and 34737 transitions. [2021-11-19 15:54:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:54:54,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 4 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 312 [2021-11-19 15:54:54,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:54:54,119 INFO L225 Difference]: With dead ends: 25289 [2021-11-19 15:54:54,119 INFO L226 Difference]: Without dead ends: 12653 [2021-11-19 15:54:54,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:54:54,263 INFO L933 BasicCegarLoop]: 3934 mSDtfsCounter, 3899 mSDsluCounter, 3928 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3899 SdHoareTripleChecker+Valid, 7862 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:54:54,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3899 Valid, 7862 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:54:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12653 states. [2021-11-19 15:54:55,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12653 to 12653. [2021-11-19 15:54:55,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12653 states, 8366 states have (on average 1.282094190772173) internal successors, (10726), 8687 states have internal predecessors, (10726), 3272 states have call successors, (3272), 1044 states have call predecessors, (3272), 1014 states have return successors, (3380), 3171 states have call predecessors, (3380), 3272 states have call successors, (3380) [2021-11-19 15:54:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12653 states to 12653 states and 17378 transitions. [2021-11-19 15:54:55,158 INFO L78 Accepts]: Start accepts. Automaton has 12653 states and 17378 transitions. Word has length 312 [2021-11-19 15:54:55,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:54:55,158 INFO L470 AbstractCegarLoop]: Abstraction has 12653 states and 17378 transitions. [2021-11-19 15:54:55,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 4 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2021-11-19 15:54:55,159 INFO L276 IsEmpty]: Start isEmpty. Operand 12653 states and 17378 transitions. [2021-11-19 15:54:55,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-19 15:54:55,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:54:55,241 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:54:55,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-19 15:54:55,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:54:55,442 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:54:55,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:54:55,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2043103320, now seen corresponding path program 1 times [2021-11-19 15:54:55,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:54:55,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347851421] [2021-11-19 15:54:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:54:55,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:54:55,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:54:55,448 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:54:55,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-19 15:55:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:55:01,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 5201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:55:01,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:55:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-19 15:55:02,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:55:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-19 15:55:03,829 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:55:03,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347851421] [2021-11-19 15:55:03,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347851421] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:55:03,829 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:55:03,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 15:55:03,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841903506] [2021-11-19 15:55:03,830 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:55:03,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:55:03,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:55:03,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:55:03,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:55:03,833 INFO L87 Difference]: Start difference. First operand 12653 states and 17378 transitions. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 4 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2021-11-19 15:55:16,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:55:16,324 INFO L93 Difference]: Finished difference Result 38473 states and 52819 transitions. [2021-11-19 15:55:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 15:55:16,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 4 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 317 [2021-11-19 15:55:16,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:55:16,414 INFO L225 Difference]: With dead ends: 38473 [2021-11-19 15:55:16,414 INFO L226 Difference]: Without dead ends: 25837 [2021-11-19 15:55:16,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:55:16,452 INFO L933 BasicCegarLoop]: 7467 mSDtfsCounter, 8511 mSDsluCounter, 29139 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8575 SdHoareTripleChecker+Valid, 36606 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:55:16,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8575 Valid, 36606 Invalid, 2392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [280 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2021-11-19 15:55:16,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25837 states. [2021-11-19 15:55:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25837 to 17114. [2021-11-19 15:55:17,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17114 states, 11334 states have (on average 1.283836244926769) internal successors, (14551), 11771 states have internal predecessors, (14551), 4418 states have call successors, (4418), 1401 states have call predecessors, (4418), 1361 states have return successors, (4562), 4280 states have call predecessors, (4562), 4418 states have call successors, (4562) [2021-11-19 15:55:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17114 states to 17114 states and 23531 transitions. [2021-11-19 15:55:18,044 INFO L78 Accepts]: Start accepts. Automaton has 17114 states and 23531 transitions. Word has length 317 [2021-11-19 15:55:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:55:18,045 INFO L470 AbstractCegarLoop]: Abstraction has 17114 states and 23531 transitions. [2021-11-19 15:55:18,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 4 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2021-11-19 15:55:18,045 INFO L276 IsEmpty]: Start isEmpty. Operand 17114 states and 23531 transitions. [2021-11-19 15:55:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-19 15:55:18,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:55:18,051 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:55:18,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-19 15:55:18,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:55:18,252 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:55:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:55:18,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1281973478, now seen corresponding path program 1 times [2021-11-19 15:55:18,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:55:18,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83718071] [2021-11-19 15:55:18,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:55:18,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:55:18,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:55:18,258 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:55:18,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-19 15:55:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:55:24,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 5203 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 15:55:24,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:55:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-19 15:55:25,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:55:26,682 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-19 15:55:26,683 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:55:26,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83718071] [2021-11-19 15:55:26,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83718071] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:55:26,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:55:26,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-19 15:55:26,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065121794] [2021-11-19 15:55:26,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:55:26,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:55:26,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:55:26,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:55:26,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:55:26,685 INFO L87 Difference]: Start difference. First operand 17114 states and 23531 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (41), 4 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-19 15:55:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:55:28,175 INFO L93 Difference]: Finished difference Result 34256 states and 47121 transitions. [2021-11-19 15:55:28,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:55:28,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (41), 4 states have call predecessors, (41), 2 states have call successors, (41) Word has length 317 [2021-11-19 15:55:28,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:55:28,226 INFO L225 Difference]: With dead ends: 34256 [2021-11-19 15:55:28,226 INFO L226 Difference]: Without dead ends: 17159 [2021-11-19 15:55:28,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:55:28,263 INFO L933 BasicCegarLoop]: 3935 mSDtfsCounter, 1 mSDsluCounter, 19666 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23601 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:55:28,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 23601 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:55:28,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17159 states. [2021-11-19 15:55:29,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17159 to 17135. [2021-11-19 15:55:29,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17135 states, 11349 states have (on average 1.2834610978940877) internal successors, (14566), 11786 states have internal predecessors, (14566), 4418 states have call successors, (4418), 1401 states have call predecessors, (4418), 1367 states have return successors, (4586), 4286 states have call predecessors, (4586), 4418 states have call successors, (4586) [2021-11-19 15:55:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17135 states to 17135 states and 23570 transitions. [2021-11-19 15:55:29,750 INFO L78 Accepts]: Start accepts. Automaton has 17135 states and 23570 transitions. Word has length 317 [2021-11-19 15:55:29,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:55:29,750 INFO L470 AbstractCegarLoop]: Abstraction has 17135 states and 23570 transitions. [2021-11-19 15:55:29,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (41), 4 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-19 15:55:29,750 INFO L276 IsEmpty]: Start isEmpty. Operand 17135 states and 23570 transitions. [2021-11-19 15:55:29,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-19 15:55:29,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:55:29,757 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:55:29,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-11-19 15:55:29,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:55:29,957 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:55:29,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:55:29,958 INFO L85 PathProgramCache]: Analyzing trace with hash 997341345, now seen corresponding path program 1 times [2021-11-19 15:55:29,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:55:29,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121011315] [2021-11-19 15:55:29,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:55:29,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:55:29,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:55:29,963 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:55:29,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-19 15:55:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:55:36,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 5246 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 15:55:36,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:55:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-11-19 15:55:37,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:55:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-11-19 15:55:38,767 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:55:38,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121011315] [2021-11-19 15:55:38,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121011315] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:55:38,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:55:38,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-19 15:55:38,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129638327] [2021-11-19 15:55:38,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:55:38,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:55:38,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:55:38,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:55:38,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:55:38,769 INFO L87 Difference]: Start difference. First operand 17135 states and 23570 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (43), 4 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-19 15:55:40,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:55:40,257 INFO L93 Difference]: Finished difference Result 34517 states and 47501 transitions. [2021-11-19 15:55:40,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:55:40,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (43), 4 states have call predecessors, (43), 2 states have call successors, (43) Word has length 330 [2021-11-19 15:55:40,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:55:40,327 INFO L225 Difference]: With dead ends: 34517 [2021-11-19 15:55:40,328 INFO L226 Difference]: Without dead ends: 17399 [2021-11-19 15:55:40,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:55:40,375 INFO L933 BasicCegarLoop]: 4225 mSDtfsCounter, 179 mSDsluCounter, 20881 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 25106 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:55:40,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 25106 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:55:40,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17399 states. [2021-11-19 15:55:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17399 to 17141. [2021-11-19 15:55:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17141 states, 11355 states have (on average 1.2833113166006165) internal successors, (14572), 11789 states have internal predecessors, (14572), 4418 states have call successors, (4418), 1401 states have call predecessors, (4418), 1367 states have return successors, (4586), 4289 states have call predecessors, (4586), 4418 states have call successors, (4586) [2021-11-19 15:55:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17141 states to 17141 states and 23576 transitions. [2021-11-19 15:55:41,826 INFO L78 Accepts]: Start accepts. Automaton has 17141 states and 23576 transitions. Word has length 330 [2021-11-19 15:55:41,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:55:41,827 INFO L470 AbstractCegarLoop]: Abstraction has 17141 states and 23576 transitions. [2021-11-19 15:55:41,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (43), 4 states have call predecessors, (43), 2 states have call successors, (43) [2021-11-19 15:55:41,827 INFO L276 IsEmpty]: Start isEmpty. Operand 17141 states and 23576 transitions. [2021-11-19 15:55:41,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-11-19 15:55:41,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:55:41,834 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:55:41,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-11-19 15:55:42,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:55:42,035 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:55:42,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:55:42,035 INFO L85 PathProgramCache]: Analyzing trace with hash 939158765, now seen corresponding path program 1 times [2021-11-19 15:55:42,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:55:42,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126593421] [2021-11-19 15:55:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:55:42,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:55:42,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:55:42,041 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:55:42,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-19 15:55:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:55:47,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 5278 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 15:55:47,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:55:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 165 proven. 23 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2021-11-19 15:55:50,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:55:54,491 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2021-11-19 15:55:54,492 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:55:54,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126593421] [2021-11-19 15:55:54,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126593421] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:55:54,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1242233229] [2021-11-19 15:55:54,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:55:54,493 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:55:54,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:55:54,502 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:55:54,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2021-11-19 15:55:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:55:56,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 5278 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:55:56,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:55:57,742 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2021-11-19 15:55:57,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:55:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2021-11-19 15:55:58,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1242233229] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:55:58,423 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:55:58,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [15, 14] total 28 [2021-11-19 15:55:58,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436220438] [2021-11-19 15:55:58,423 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:55:58,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:55:58,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:55:58,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:55:58,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-11-19 15:55:58,425 INFO L87 Difference]: Start difference. First operand 17141 states and 23576 transitions. Second operand has 5 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-19 15:56:00,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:56:00,202 INFO L93 Difference]: Finished difference Result 34433 states and 47575 transitions. [2021-11-19 15:56:00,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:56:00,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 346 [2021-11-19 15:56:00,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:56:00,244 INFO L225 Difference]: With dead ends: 34433 [2021-11-19 15:56:00,245 INFO L226 Difference]: Without dead ends: 17309 [2021-11-19 15:56:00,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1381 GetRequests, 1354 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2021-11-19 15:56:00,274 INFO L933 BasicCegarLoop]: 3948 mSDtfsCounter, 33 mSDsluCounter, 11807 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 15755 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:56:00,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 15755 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:56:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17309 states. [2021-11-19 15:56:01,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17309 to 17269. [2021-11-19 15:56:01,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17269 states, 11455 states have (on average 1.282234831951113) internal successors, (14688), 11897 states have internal predecessors, (14688), 4426 states have call successors, (4426), 1413 states have call predecessors, (4426), 1387 states have return successors, (4606), 4297 states have call predecessors, (4606), 4426 states have call successors, (4606) [2021-11-19 15:56:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17269 states to 17269 states and 23720 transitions. [2021-11-19 15:56:01,747 INFO L78 Accepts]: Start accepts. Automaton has 17269 states and 23720 transitions. Word has length 346 [2021-11-19 15:56:01,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:56:01,748 INFO L470 AbstractCegarLoop]: Abstraction has 17269 states and 23720 transitions. [2021-11-19 15:56:01,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 3 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-19 15:56:01,749 INFO L276 IsEmpty]: Start isEmpty. Operand 17269 states and 23720 transitions. [2021-11-19 15:56:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-11-19 15:56:01,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:56:01,758 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:56:01,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-11-19 15:56:02,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2021-11-19 15:56:02,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:56:02,180 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:56:02,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:56:02,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1825878885, now seen corresponding path program 1 times [2021-11-19 15:56:02,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:56:02,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341610934] [2021-11-19 15:56:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:56:02,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:56:02,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:56:02,187 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:56:02,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-19 15:56:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:56:07,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 5274 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 15:56:07,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:56:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 165 proven. 23 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2021-11-19 15:56:10,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:56:14,561 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2021-11-19 15:56:14,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:56:14,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341610934] [2021-11-19 15:56:14,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341610934] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:56:14,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [314153560] [2021-11-19 15:56:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:56:14,562 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:56:14,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:56:14,563 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:56:14,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2021-11-19 15:56:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:56:16,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 5274 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:56:16,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:56:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2021-11-19 15:56:17,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:56:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2021-11-19 15:56:18,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [314153560] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:56:18,352 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:56:18,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [15, 14] total 28 [2021-11-19 15:56:18,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689693338] [2021-11-19 15:56:18,352 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:56:18,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:56:18,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:56:18,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:56:18,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-11-19 15:56:18,353 INFO L87 Difference]: Start difference. First operand 17269 states and 23720 transitions. Second operand has 5 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 3 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-19 15:56:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:56:20,035 INFO L93 Difference]: Finished difference Result 34431 states and 47594 transitions. [2021-11-19 15:56:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:56:20,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 3 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 349 [2021-11-19 15:56:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:56:20,043 INFO L225 Difference]: With dead ends: 34431 [2021-11-19 15:56:20,043 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 15:56:20,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1393 GetRequests, 1366 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2021-11-19 15:56:20,124 INFO L933 BasicCegarLoop]: 3934 mSDtfsCounter, 8 mSDsluCounter, 11788 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 15722 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:56:20,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 15722 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:56:20,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 15:56:20,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 15:56:20,125 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 15:56:20,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 15:56:20,129 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 349 [2021-11-19 15:56:20,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:56:20,130 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 15:56:20,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 3 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-19 15:56:20,130 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 15:56:20,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 15:56:20,133 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 15:56:20,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2021-11-19 15:56:20,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-11-19 15:56:20,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4883a3-7837-4ef0-927b-a0dae6a49a1a/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:56:20,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.