./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 16:00:06,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:00:06,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:00:06,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:00:06,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:00:06,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:00:06,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:00:06,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:00:06,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:00:06,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:00:06,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:00:06,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:00:06,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:00:06,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:00:06,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:00:06,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:00:06,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:00:06,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:00:06,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:00:06,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:00:06,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:00:06,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:00:06,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:00:06,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:00:06,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:00:06,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:00:06,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:00:06,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:00:06,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:00:06,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:00:06,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:00:06,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:00:06,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:00:06,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:00:06,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:00:06,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:00:06,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:00:06,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:00:06,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:00:06,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:00:06,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:00:06,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 16:00:06,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:00:06,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:00:06,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:00:06,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:00:06,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:00:06,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:00:06,316 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:00:06,316 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:00:06,316 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:00:06,317 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:00:06,317 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:00:06,317 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:00:06,317 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:00:06,317 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:00:06,318 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:00:06,318 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:00:06,318 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:00:06,318 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:00:06,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:00:06,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:00:06,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:00:06,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:00:06,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:00:06,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:00:06,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:00:06,320 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:00:06,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:00:06,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:00:06,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:00:06,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:00:06,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:00:06,322 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:00:06,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:00:06,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:00:06,322 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:00:06,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:00:06,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:00:06,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:00:06,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 [2022-11-23 16:00:06,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:00:06,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:00:06,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:00:06,610 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:00:06,610 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:00:06,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2022-11-23 16:00:09,753 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:00:10,481 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:00:10,482 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2022-11-23 16:00:10,547 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/data/97fdac37b/2d33bf54a1f641d0913c9da8c2c4a5fb/FLAG401bc24c6 [2022-11-23 16:00:10,566 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/data/97fdac37b/2d33bf54a1f641d0913c9da8c2c4a5fb [2022-11-23 16:00:10,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:00:10,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:00:10,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:00:10,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:00:10,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:00:10,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:00:10" (1/1) ... [2022-11-23 16:00:10,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68cdca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:10, skipping insertion in model container [2022-11-23 16:00:10,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:00:10" (1/1) ... [2022-11-23 16:00:10,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:00:10,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:00:14,162 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376704,376717] [2022-11-23 16:00:14,169 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376849,376862] [2022-11-23 16:00:14,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:00:14,287 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:00:14,748 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376704,376717] [2022-11-23 16:00:14,749 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376849,376862] [2022-11-23 16:00:14,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:00:14,975 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:00:14,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:14 WrapperNode [2022-11-23 16:00:14,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:00:14,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:00:14,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:00:14,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:00:14,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:14" (1/1) ... [2022-11-23 16:00:15,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:14" (1/1) ... [2022-11-23 16:00:15,316 INFO L138 Inliner]: procedures = 490, calls = 2384, calls flagged for inlining = 232, calls inlined = 186, statements flattened = 4666 [2022-11-23 16:00:15,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:00:15,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:00:15,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:00:15,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:00:15,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:14" (1/1) ... [2022-11-23 16:00:15,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:14" (1/1) ... [2022-11-23 16:00:15,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:14" (1/1) ... [2022-11-23 16:00:15,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:14" (1/1) ... [2022-11-23 16:00:15,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:14" (1/1) ... [2022-11-23 16:00:15,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:14" (1/1) ... [2022-11-23 16:00:15,541 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:14" (1/1) ... [2022-11-23 16:00:15,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:14" (1/1) ... [2022-11-23 16:00:15,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:00:15,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:00:15,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:00:15,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:00:15,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:14" (1/1) ... [2022-11-23 16:00:15,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:00:15,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:15,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:00:15,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:00:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 16:00:15,733 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 16:00:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 16:00:15,733 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 16:00:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-23 16:00:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-23 16:00:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-23 16:00:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-23 16:00:15,734 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_open [2022-11-23 16:00:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_open [2022-11-23 16:00:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 16:00:15,735 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 16:00:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 16:00:15,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 16:00:15,735 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-23 16:00:15,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-23 16:00:15,736 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-23 16:00:15,736 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-23 16:00:15,736 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-23 16:00:15,736 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-23 16:00:15,736 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 16:00:15,737 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 16:00:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 16:00:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 16:00:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_tx_db_inc_wptr [2022-11-23 16:00:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_tx_db_inc_wptr [2022-11-23 16:00:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 16:00:15,740 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 16:00:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 16:00:15,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 16:00:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-23 16:00:15,740 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-23 16:00:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 16:00:15,741 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 16:00:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 16:00:15,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 16:00:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2022-11-23 16:00:15,742 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2022-11-23 16:00:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 16:00:15,742 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 16:00:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 16:00:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-23 16:00:15,742 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-23 16:00:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 16:00:15,743 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 16:00:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-23 16:00:15,743 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-23 16:00:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 16:00:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-23 16:00:15,744 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-23 16:00:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 16:00:15,746 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 16:00:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 16:00:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 16:00:15,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 16:00:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure __bdx_tx_db_ptr_next [2022-11-23 16:00:15,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __bdx_tx_db_ptr_next [2022-11-23 16:00:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 16:00:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 16:00:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 16:00:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 16:00:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 16:00:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 16:00:15,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 16:00:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_close [2022-11-23 16:00:15,748 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_close [2022-11-23 16:00:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 16:00:15,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 16:00:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 16:00:15,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 16:00:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_bdx_priv [2022-11-23 16:00:15,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_bdx_priv [2022-11-23 16:00:15,750 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-23 16:00:15,750 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-23 16:00:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-23 16:00:15,751 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-23 16:00:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 16:00:15,751 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 16:00:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 16:00:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 16:00:15,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 16:00:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_restore_mac [2022-11-23 16:00:15,753 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_restore_mac [2022-11-23 16:00:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:00:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rx_alloc_skbs [2022-11-23 16:00:15,754 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rx_alloc_skbs [2022-11-23 16:00:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 16:00:15,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 16:00:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 16:00:15,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 16:00:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 16:00:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 16:00:15,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 16:00:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-23 16:00:15,756 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-23 16:00:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 16:00:15,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 16:00:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-23 16:00:15,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-23 16:00:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-23 16:00:15,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-23 16:00:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-23 16:00:15,758 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-23 16:00:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 16:00:15,758 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 16:00:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 16:00:15,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 16:00:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rxdb_available [2022-11-23 16:00:15,760 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rxdb_available [2022-11-23 16:00:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-23 16:00:15,763 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-23 16:00:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-23 16:00:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-23 16:00:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 16:00:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 16:00:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rxdb_addr_elem [2022-11-23 16:00:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rxdb_addr_elem [2022-11-23 16:00:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2022-11-23 16:00:15,773 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2022-11-23 16:00:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:00:15,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:00:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 16:00:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 16:00:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 16:00:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 16:00:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_tx_db_inc_rptr [2022-11-23 16:00:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_tx_db_inc_rptr [2022-11-23 16:00:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 16:00:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 16:00:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 16:00:15,775 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 16:00:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure __bdx_vlan_rx_vid [2022-11-23 16:00:15,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __bdx_vlan_rx_vid [2022-11-23 16:00:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-23 16:00:15,775 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-23 16:00:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_fifo_free [2022-11-23 16:00:15,775 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_fifo_free [2022-11-23 16:00:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_remove [2022-11-23 16:00:15,776 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_remove [2022-11-23 16:00:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 16:00:15,776 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 16:00:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 16:00:15,776 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 16:00:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-23 16:00:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-23 16:00:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 16:00:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 16:00:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 16:00:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-23 16:00:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-23 16:00:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 16:00:15,778 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 16:00:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 16:00:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 16:00:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-23 16:00:15,778 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-23 16:00:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-23 16:00:15,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-23 16:00:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_reset [2022-11-23 16:00:15,779 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_reset [2022-11-23 16:00:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 16:00:15,779 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 16:00:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 16:00:15,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 16:00:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rxdb_alloc_elem [2022-11-23 16:00:15,780 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rxdb_alloc_elem [2022-11-23 16:00:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_range_check [2022-11-23 16:00:15,780 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_range_check [2022-11-23 16:00:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-23 16:00:15,780 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-23 16:00:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2022-11-23 16:00:15,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2022-11-23 16:00:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 16:00:15,781 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 16:00:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_fifo_init [2022-11-23 16:00:15,781 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_fifo_init [2022-11-23 16:00:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 16:00:15,782 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 16:00:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_link_changed [2022-11-23 16:00:15,783 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_link_changed [2022-11-23 16:00:15,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 16:00:15,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 16:00:15,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 16:00:15,783 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 16:00:15,783 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 16:00:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_setmulti [2022-11-23 16:00:15,784 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_setmulti [2022-11-23 16:00:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure print_rxfd [2022-11-23 16:00:15,784 INFO L138 BoogieDeclarations]: Found implementation of procedure print_rxfd [2022-11-23 16:00:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 16:00:15,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 16:00:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-23 16:00:15,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-23 16:00:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 16:00:15,785 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 16:00:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:00:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 16:00:15,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 16:00:16,672 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:00:16,681 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:00:16,951 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 16:03:01,302 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 16:03:01,411 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:03:04,535 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:03:04,536 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:03:04,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:03:04 BoogieIcfgContainer [2022-11-23 16:03:04,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:03:04,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:03:04,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:03:04,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:03:04,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:00:10" (1/3) ... [2022-11-23 16:03:04,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec3d253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:03:04, skipping insertion in model container [2022-11-23 16:03:04,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:14" (2/3) ... [2022-11-23 16:03:04,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec3d253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:03:04, skipping insertion in model container [2022-11-23 16:03:04,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:03:04" (3/3) ... [2022-11-23 16:03:04,556 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2022-11-23 16:03:04,576 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:03:04,577 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 16:03:04,682 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:03:04,689 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15619962, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:03:04,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 16:03:04,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 1231 states, 720 states have (on average 1.275) internal successors, (918), 743 states have internal predecessors, (918), 420 states have call successors, (420), 91 states have call predecessors, (420), 90 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) [2022-11-23 16:03:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 16:03:04,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:04,735 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:03:04,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:03:04,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:04,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1365540724, now seen corresponding path program 1 times [2022-11-23 16:03:04,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:04,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029811124] [2022-11-23 16:03:04,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:04,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-23 16:03:06,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:06,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029811124] [2022-11-23 16:03:06,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029811124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:03:06,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:03:06,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:03:06,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925253324] [2022-11-23 16:03:06,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:03:07,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:03:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:07,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:03:07,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:03:07,045 INFO L87 Difference]: Start difference. First operand has 1231 states, 720 states have (on average 1.275) internal successors, (918), 743 states have internal predecessors, (918), 420 states have call successors, (420), 91 states have call predecessors, (420), 90 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 16:03:09,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:03:14,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:03:15,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:03:15,348 INFO L93 Difference]: Finished difference Result 3387 states and 4870 transitions. [2022-11-23 16:03:15,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:03:15,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 86 [2022-11-23 16:03:15,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:03:15,384 INFO L225 Difference]: With dead ends: 3387 [2022-11-23 16:03:15,384 INFO L226 Difference]: Without dead ends: 2110 [2022-11-23 16:03:15,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:03:15,405 INFO L413 NwaCegarLoop]: 1968 mSDtfsCounter, 1308 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 3423 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:03:15,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 3423 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 556 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2022-11-23 16:03:15,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2022-11-23 16:03:15,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2105. [2022-11-23 16:03:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2105 states, 1262 states have (on average 1.2567353407290016) internal successors, (1586), 1298 states have internal predecessors, (1586), 682 states have call successors, (682), 159 states have call predecessors, (682), 159 states have return successors, (682), 677 states have call predecessors, (682), 682 states have call successors, (682) [2022-11-23 16:03:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 2950 transitions. [2022-11-23 16:03:15,668 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 2950 transitions. Word has length 86 [2022-11-23 16:03:15,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:03:15,670 INFO L495 AbstractCegarLoop]: Abstraction has 2105 states and 2950 transitions. [2022-11-23 16:03:15,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 16:03:15,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 2950 transitions. [2022-11-23 16:03:15,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-23 16:03:15,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:15,681 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:03:15,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:03:15,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:03:15,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:15,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1731225222, now seen corresponding path program 1 times [2022-11-23 16:03:15,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:15,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709231408] [2022-11-23 16:03:15,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:15,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:16,875 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-23 16:03:16,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:16,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709231408] [2022-11-23 16:03:16,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709231408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:03:16,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:03:16,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:03:16,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39677427] [2022-11-23 16:03:16,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:03:16,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:03:16,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:16,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:03:16,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:03:16,885 INFO L87 Difference]: Start difference. First operand 2105 states and 2950 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 16:03:18,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:03:22,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:03:24,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:03:24,652 INFO L93 Difference]: Finished difference Result 5836 states and 8157 transitions. [2022-11-23 16:03:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:03:24,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 93 [2022-11-23 16:03:24,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:03:24,678 INFO L225 Difference]: With dead ends: 5836 [2022-11-23 16:03:24,678 INFO L226 Difference]: Without dead ends: 3742 [2022-11-23 16:03:24,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:03:24,690 INFO L413 NwaCegarLoop]: 1778 mSDtfsCounter, 1560 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:03:24,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 3073 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 480 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2022-11-23 16:03:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2022-11-23 16:03:25,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3735. [2022-11-23 16:03:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3735 states, 2246 states have (on average 1.257346393588602) internal successors, (2824), 2311 states have internal predecessors, (2824), 1188 states have call successors, (1188), 300 states have call predecessors, (1188), 299 states have return successors, (1200), 1173 states have call predecessors, (1200), 1188 states have call successors, (1200) [2022-11-23 16:03:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 5212 transitions. [2022-11-23 16:03:25,048 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 5212 transitions. Word has length 93 [2022-11-23 16:03:25,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:03:25,051 INFO L495 AbstractCegarLoop]: Abstraction has 3735 states and 5212 transitions. [2022-11-23 16:03:25,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 16:03:25,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 5212 transitions. [2022-11-23 16:03:25,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-23 16:03:25,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:25,059 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-23 16:03:25,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:03:25,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:03:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:25,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1996231866, now seen corresponding path program 1 times [2022-11-23 16:03:25,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:25,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297700215] [2022-11-23 16:03:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:25,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-23 16:03:26,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:26,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297700215] [2022-11-23 16:03:26,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297700215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:03:26,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:03:26,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:03:26,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100875071] [2022-11-23 16:03:26,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:03:26,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:03:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:26,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:03:26,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:03:26,482 INFO L87 Difference]: Start difference. First operand 3735 states and 5212 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 16:03:28,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:03:34,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:03:35,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:03:35,670 INFO L93 Difference]: Finished difference Result 9019 states and 12577 transitions. [2022-11-23 16:03:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:03:35,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 130 [2022-11-23 16:03:35,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:03:35,708 INFO L225 Difference]: With dead ends: 9019 [2022-11-23 16:03:35,709 INFO L226 Difference]: Without dead ends: 5295 [2022-11-23 16:03:35,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:03:35,729 INFO L413 NwaCegarLoop]: 2512 mSDtfsCounter, 1263 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 3906 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:03:35,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 3906 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 713 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2022-11-23 16:03:35,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2022-11-23 16:03:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5289. [2022-11-23 16:03:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5289 states, 3187 states have (on average 1.2532161907750234) internal successors, (3994), 3278 states have internal predecessors, (3994), 1670 states have call successors, (1670), 431 states have call predecessors, (1670), 430 states have return successors, (1683), 1649 states have call predecessors, (1683), 1670 states have call successors, (1683) [2022-11-23 16:03:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 7347 transitions. [2022-11-23 16:03:36,034 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 7347 transitions. Word has length 130 [2022-11-23 16:03:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:03:36,036 INFO L495 AbstractCegarLoop]: Abstraction has 5289 states and 7347 transitions. [2022-11-23 16:03:36,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 16:03:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 7347 transitions. [2022-11-23 16:03:36,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-23 16:03:36,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:36,050 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 9, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:03:36,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:03:36,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:03:36,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:36,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1906453458, now seen corresponding path program 1 times [2022-11-23 16:03:36,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:36,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165044749] [2022-11-23 16:03:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:36,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-23 16:03:37,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:37,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165044749] [2022-11-23 16:03:37,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165044749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:03:37,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:03:37,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:03:37,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576492706] [2022-11-23 16:03:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:03:37,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:03:37,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:03:37,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:03:37,736 INFO L87 Difference]: Start difference. First operand 5289 states and 7347 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-23 16:03:39,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:03:44,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:03:45,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:03:45,252 INFO L93 Difference]: Finished difference Result 10573 states and 14690 transitions. [2022-11-23 16:03:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:03:45,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 192 [2022-11-23 16:03:45,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:03:45,284 INFO L225 Difference]: With dead ends: 10573 [2022-11-23 16:03:45,284 INFO L226 Difference]: Without dead ends: 5295 [2022-11-23 16:03:45,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:03:45,305 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 0 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:03:45,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2869 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-11-23 16:03:45,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2022-11-23 16:03:45,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5295. [2022-11-23 16:03:45,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 3193 states have (on average 1.252740369558409) internal successors, (4000), 3284 states have internal predecessors, (4000), 1670 states have call successors, (1670), 431 states have call predecessors, (1670), 430 states have return successors, (1683), 1649 states have call predecessors, (1683), 1670 states have call successors, (1683) [2022-11-23 16:03:45,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 7353 transitions. [2022-11-23 16:03:45,609 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 7353 transitions. Word has length 192 [2022-11-23 16:03:45,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:03:45,609 INFO L495 AbstractCegarLoop]: Abstraction has 5295 states and 7353 transitions. [2022-11-23 16:03:45,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-23 16:03:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 7353 transitions. [2022-11-23 16:03:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-23 16:03:45,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:45,618 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 9, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:03:45,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:03:45,619 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:03:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1282730355, now seen corresponding path program 1 times [2022-11-23 16:03:45,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:45,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967487002] [2022-11-23 16:03:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:45,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-23 16:03:47,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:47,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967487002] [2022-11-23 16:03:47,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967487002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:03:47,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410745340] [2022-11-23 16:03:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:47,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:03:47,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:03:47,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:03:47,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:03:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:49,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 4812 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 16:03:49,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:04:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-11-23 16:04:28,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:04:28,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410745340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:28,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:04:28,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-11-23 16:04:28,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983840076] [2022-11-23 16:04:28,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:28,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:04:28,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:28,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:04:28,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:04:28,541 INFO L87 Difference]: Start difference. First operand 5295 states and 7353 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-23 16:04:30,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:43,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:46,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:46,053 INFO L93 Difference]: Finished difference Result 9903 states and 13711 transitions. [2022-11-23 16:04:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:04:46,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 193 [2022-11-23 16:04:46,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:46,111 INFO L225 Difference]: With dead ends: 9903 [2022-11-23 16:04:46,112 INFO L226 Difference]: Without dead ends: 9901 [2022-11-23 16:04:46,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 16:04:46,120 INFO L413 NwaCegarLoop]: 1791 mSDtfsCounter, 1366 mSDsluCounter, 6122 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 7913 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:46,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 7913 Invalid, 1943 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1941 Invalid, 2 Unknown, 0 Unchecked, 16.5s Time] [2022-11-23 16:04:46,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9901 states. [2022-11-23 16:04:47,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9901 to 9893. [2022-11-23 16:04:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9893 states, 5998 states have (on average 1.2577525841947317) internal successors, (7544), 6171 states have internal predecessors, (7544), 3065 states have call successors, (3065), 830 states have call predecessors, (3065), 828 states have return successors, (3090), 3023 states have call predecessors, (3090), 3065 states have call successors, (3090) [2022-11-23 16:04:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9893 states to 9893 states and 13699 transitions. [2022-11-23 16:04:47,147 INFO L78 Accepts]: Start accepts. Automaton has 9893 states and 13699 transitions. Word has length 193 [2022-11-23 16:04:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:47,149 INFO L495 AbstractCegarLoop]: Abstraction has 9893 states and 13699 transitions. [2022-11-23 16:04:47,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-23 16:04:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 9893 states and 13699 transitions. [2022-11-23 16:04:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-23 16:04:47,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:47,170 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 16:04:47,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:04:47,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:47,390 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:47,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:47,390 INFO L85 PathProgramCache]: Analyzing trace with hash -964882263, now seen corresponding path program 1 times [2022-11-23 16:04:47,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:47,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883621650] [2022-11-23 16:04:47,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:47,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-23 16:04:48,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:48,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883621650] [2022-11-23 16:04:48,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883621650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:48,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:48,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:48,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231599700] [2022-11-23 16:04:48,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:48,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:48,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:48,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:48,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:48,644 INFO L87 Difference]: Start difference. First operand 9893 states and 13699 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-23 16:04:50,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:54,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:57,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:57,232 INFO L93 Difference]: Finished difference Result 19848 states and 27331 transitions. [2022-11-23 16:04:57,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:57,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 267 [2022-11-23 16:04:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:57,294 INFO L225 Difference]: With dead ends: 19848 [2022-11-23 16:04:57,294 INFO L226 Difference]: Without dead ends: 9966 [2022-11-23 16:04:57,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:57,336 INFO L413 NwaCegarLoop]: 1734 mSDtfsCounter, 1249 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 3144 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:57,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 3144 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 511 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2022-11-23 16:04:57,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9966 states. [2022-11-23 16:04:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9966 to 9961. [2022-11-23 16:04:58,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9961 states, 6055 states have (on average 1.2398018166804294) internal successors, (7507), 6235 states have internal predecessors, (7507), 3022 states have call successors, (3022), 885 states have call predecessors, (3022), 882 states have return successors, (3056), 2978 states have call predecessors, (3056), 3022 states have call successors, (3056) [2022-11-23 16:04:58,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9961 states to 9961 states and 13585 transitions. [2022-11-23 16:04:58,090 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 13585 transitions. Word has length 267 [2022-11-23 16:04:58,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:58,090 INFO L495 AbstractCegarLoop]: Abstraction has 9961 states and 13585 transitions. [2022-11-23 16:04:58,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-23 16:04:58,091 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 13585 transitions. [2022-11-23 16:04:58,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-23 16:04:58,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:58,098 INFO L195 NwaCegarLoop]: trace histogram [11, 8, 8, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:04:58,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 16:04:58,099 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:58,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:58,099 INFO L85 PathProgramCache]: Analyzing trace with hash 960188389, now seen corresponding path program 1 times [2022-11-23 16:04:58,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:58,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527534110] [2022-11-23 16:04:58,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:58,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-11-23 16:04:59,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:59,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527534110] [2022-11-23 16:04:59,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527534110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:59,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:59,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:04:59,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876486890] [2022-11-23 16:04:59,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:59,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:04:59,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:59,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:04:59,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:04:59,628 INFO L87 Difference]: Start difference. First operand 9961 states and 13585 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 16:05:01,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:06,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:09,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:09,128 INFO L93 Difference]: Finished difference Result 19932 states and 27239 transitions. [2022-11-23 16:05:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:05:09,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 271 [2022-11-23 16:05:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:09,177 INFO L225 Difference]: With dead ends: 19932 [2022-11-23 16:05:09,178 INFO L226 Difference]: Without dead ends: 10000 [2022-11-23 16:05:09,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:05:09,215 INFO L413 NwaCegarLoop]: 1433 mSDtfsCounter, 7 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4286 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:09,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4286 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 748 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-11-23 16:05:09,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2022-11-23 16:05:09,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 9977. [2022-11-23 16:05:09,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9977 states, 6071 states have (on average 1.2391698237522648) internal successors, (7523), 6251 states have internal predecessors, (7523), 3022 states have call successors, (3022), 885 states have call predecessors, (3022), 882 states have return successors, (3056), 2978 states have call predecessors, (3056), 3022 states have call successors, (3056) [2022-11-23 16:05:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9977 states to 9977 states and 13601 transitions. [2022-11-23 16:05:09,861 INFO L78 Accepts]: Start accepts. Automaton has 9977 states and 13601 transitions. Word has length 271 [2022-11-23 16:05:09,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:09,863 INFO L495 AbstractCegarLoop]: Abstraction has 9977 states and 13601 transitions. [2022-11-23 16:05:09,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 16:05:09,863 INFO L276 IsEmpty]: Start isEmpty. Operand 9977 states and 13601 transitions. [2022-11-23 16:05:09,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-23 16:05:09,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:09,870 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:09,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 16:05:09,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:09,872 INFO L85 PathProgramCache]: Analyzing trace with hash 255745468, now seen corresponding path program 1 times [2022-11-23 16:05:09,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:09,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181247976] [2022-11-23 16:05:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:09,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:11,497 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2022-11-23 16:05:11,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:11,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181247976] [2022-11-23 16:05:11,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181247976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:11,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:11,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:05:11,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122516560] [2022-11-23 16:05:11,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:11,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:05:11,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:05:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:05:11,500 INFO L87 Difference]: Start difference. First operand 9977 states and 13601 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-23 16:05:13,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:17,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:20,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:20,532 INFO L93 Difference]: Finished difference Result 19964 states and 27271 transitions. [2022-11-23 16:05:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:05:20,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 306 [2022-11-23 16:05:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:20,581 INFO L225 Difference]: With dead ends: 19964 [2022-11-23 16:05:20,581 INFO L226 Difference]: Without dead ends: 10016 [2022-11-23 16:05:20,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:05:20,616 INFO L413 NwaCegarLoop]: 1439 mSDtfsCounter, 7 mSDsluCounter, 2861 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4300 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:20,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4300 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 748 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-11-23 16:05:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10016 states. [2022-11-23 16:05:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10016 to 9993. [2022-11-23 16:05:21,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9993 states, 6087 states have (on average 1.2385411532774766) internal successors, (7539), 6267 states have internal predecessors, (7539), 3022 states have call successors, (3022), 885 states have call predecessors, (3022), 882 states have return successors, (3056), 2978 states have call predecessors, (3056), 3022 states have call successors, (3056) [2022-11-23 16:05:21,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9993 states to 9993 states and 13617 transitions. [2022-11-23 16:05:21,223 INFO L78 Accepts]: Start accepts. Automaton has 9993 states and 13617 transitions. Word has length 306 [2022-11-23 16:05:21,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:21,224 INFO L495 AbstractCegarLoop]: Abstraction has 9993 states and 13617 transitions. [2022-11-23 16:05:21,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-23 16:05:21,225 INFO L276 IsEmpty]: Start isEmpty. Operand 9993 states and 13617 transitions. [2022-11-23 16:05:21,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-23 16:05:21,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:21,234 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:21,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 16:05:21,235 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:21,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:21,235 INFO L85 PathProgramCache]: Analyzing trace with hash -698877177, now seen corresponding path program 1 times [2022-11-23 16:05:21,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:21,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636074317] [2022-11-23 16:05:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:21,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-11-23 16:05:22,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:22,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636074317] [2022-11-23 16:05:22,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636074317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:22,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:22,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:05:22,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097198730] [2022-11-23 16:05:22,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:22,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:22,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:22,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:22,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:05:22,727 INFO L87 Difference]: Start difference. First operand 9993 states and 13617 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-23 16:05:24,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:28,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:30,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:30,622 INFO L93 Difference]: Finished difference Result 20537 states and 28129 transitions. [2022-11-23 16:05:30,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:30,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 347 [2022-11-23 16:05:30,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:30,663 INFO L225 Difference]: With dead ends: 20537 [2022-11-23 16:05:30,663 INFO L226 Difference]: Without dead ends: 10573 [2022-11-23 16:05:30,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:05:30,691 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 69 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:30,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2955 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 496 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2022-11-23 16:05:30,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10573 states. [2022-11-23 16:05:31,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10573 to 10057. [2022-11-23 16:05:31,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10057 states, 6135 states have (on average 1.239282803585982) internal successors, (7603), 6315 states have internal predecessors, (7603), 3038 states have call successors, (3038), 885 states have call predecessors, (3038), 882 states have return successors, (3072), 2994 states have call predecessors, (3072), 3038 states have call successors, (3072) [2022-11-23 16:05:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10057 states to 10057 states and 13713 transitions. [2022-11-23 16:05:31,367 INFO L78 Accepts]: Start accepts. Automaton has 10057 states and 13713 transitions. Word has length 347 [2022-11-23 16:05:31,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:31,368 INFO L495 AbstractCegarLoop]: Abstraction has 10057 states and 13713 transitions. [2022-11-23 16:05:31,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-23 16:05:31,369 INFO L276 IsEmpty]: Start isEmpty. Operand 10057 states and 13713 transitions. [2022-11-23 16:05:31,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-11-23 16:05:31,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:31,378 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:31,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 16:05:31,378 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:31,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:31,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2123522283, now seen corresponding path program 1 times [2022-11-23 16:05:31,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:31,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473262322] [2022-11-23 16:05:31,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:31,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-11-23 16:05:32,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:32,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473262322] [2022-11-23 16:05:32,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473262322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:32,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:32,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:05:32,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466294221] [2022-11-23 16:05:32,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:32,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:32,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:32,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:32,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:05:32,965 INFO L87 Difference]: Start difference. First operand 10057 states and 13713 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-23 16:05:35,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:38,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:40,748 INFO L93 Difference]: Finished difference Result 20729 states and 28425 transitions. [2022-11-23 16:05:40,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:40,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 348 [2022-11-23 16:05:40,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:40,798 INFO L225 Difference]: With dead ends: 20729 [2022-11-23 16:05:40,798 INFO L226 Difference]: Without dead ends: 10701 [2022-11-23 16:05:40,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:05:40,832 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 45 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:40,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 2938 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 493 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-11-23 16:05:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10701 states. [2022-11-23 16:05:41,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10701 to 10073. [2022-11-23 16:05:41,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10073 states, 6151 states have (on average 1.238660380425947) internal successors, (7619), 6331 states have internal predecessors, (7619), 3038 states have call successors, (3038), 885 states have call predecessors, (3038), 882 states have return successors, (3072), 2994 states have call predecessors, (3072), 3038 states have call successors, (3072) [2022-11-23 16:05:41,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10073 states to 10073 states and 13729 transitions. [2022-11-23 16:05:41,687 INFO L78 Accepts]: Start accepts. Automaton has 10073 states and 13729 transitions. Word has length 348 [2022-11-23 16:05:41,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:41,689 INFO L495 AbstractCegarLoop]: Abstraction has 10073 states and 13729 transitions. [2022-11-23 16:05:41,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-23 16:05:41,690 INFO L276 IsEmpty]: Start isEmpty. Operand 10073 states and 13729 transitions. [2022-11-23 16:05:41,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-11-23 16:05:41,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:41,699 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:41,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 16:05:41,700 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:41,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:41,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1398674825, now seen corresponding path program 1 times [2022-11-23 16:05:41,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:41,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200525959] [2022-11-23 16:05:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:41,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2022-11-23 16:05:43,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:43,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200525959] [2022-11-23 16:05:43,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200525959] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:05:43,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980134500] [2022-11-23 16:05:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:43,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:43,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:05:43,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:05:43,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:05:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:47,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 6420 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 16:05:47,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:05:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2022-11-23 16:05:47,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:05:47,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980134500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:47,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:05:47,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-23 16:05:47,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869448467] [2022-11-23 16:05:47,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:47,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:05:47,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:47,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:05:47,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:05:47,163 INFO L87 Difference]: Start difference. First operand 10073 states and 13729 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-23 16:05:49,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:54,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:58,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:58,099 INFO L93 Difference]: Finished difference Result 20196 states and 27591 transitions. [2022-11-23 16:05:58,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:05:58,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) Word has length 351 [2022-11-23 16:05:58,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:58,143 INFO L225 Difference]: With dead ends: 20196 [2022-11-23 16:05:58,144 INFO L226 Difference]: Without dead ends: 10152 [2022-11-23 16:05:58,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:05:58,178 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 6 mSDsluCounter, 4295 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5730 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:58,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5730 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 988 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time] [2022-11-23 16:05:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2022-11-23 16:05:58,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 10105. [2022-11-23 16:05:58,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10105 states, 6175 states have (on average 1.2377327935222673) internal successors, (7643), 6355 states have internal predecessors, (7643), 3038 states have call successors, (3038), 885 states have call predecessors, (3038), 890 states have return successors, (3104), 3002 states have call predecessors, (3104), 3038 states have call successors, (3104) [2022-11-23 16:05:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10105 states to 10105 states and 13785 transitions. [2022-11-23 16:05:58,852 INFO L78 Accepts]: Start accepts. Automaton has 10105 states and 13785 transitions. Word has length 351 [2022-11-23 16:05:58,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:58,853 INFO L495 AbstractCegarLoop]: Abstraction has 10105 states and 13785 transitions. [2022-11-23 16:05:58,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-23 16:05:58,853 INFO L276 IsEmpty]: Start isEmpty. Operand 10105 states and 13785 transitions. [2022-11-23 16:05:58,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-23 16:05:58,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:58,861 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:58,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 16:05:59,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 16:05:59,085 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:59,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:59,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1903896522, now seen corresponding path program 1 times [2022-11-23 16:05:59,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:59,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080357270] [2022-11-23 16:05:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:59,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:06:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-11-23 16:06:01,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:06:01,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080357270] [2022-11-23 16:06:01,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080357270] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:06:01,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138777369] [2022-11-23 16:06:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:01,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:06:01,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:06:01,019 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:06:01,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:06:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:06:04,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 6543 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 16:06:04,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:06:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-23 16:06:04,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:06:04,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138777369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:06:04,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:06:04,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-23 16:06:04,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165862611] [2022-11-23 16:06:04,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:06:04,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:06:04,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:06:04,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:06:04,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:06:04,834 INFO L87 Difference]: Start difference. First operand 10105 states and 13785 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-23 16:06:06,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:11,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:06:15,437 INFO L93 Difference]: Finished difference Result 20244 states and 27663 transitions. [2022-11-23 16:06:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:06:15,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) Word has length 359 [2022-11-23 16:06:15,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:06:15,482 INFO L225 Difference]: With dead ends: 20244 [2022-11-23 16:06:15,482 INFO L226 Difference]: Without dead ends: 10168 [2022-11-23 16:06:15,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:06:15,518 INFO L413 NwaCegarLoop]: 1443 mSDtfsCounter, 6 mSDsluCounter, 4314 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5757 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:06:15,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5757 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 988 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2022-11-23 16:06:15,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10168 states. [2022-11-23 16:06:16,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10168 to 10121. [2022-11-23 16:06:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10121 states, 6191 states have (on average 1.237118397674043) internal successors, (7659), 6363 states have internal predecessors, (7659), 3038 states have call successors, (3038), 885 states have call predecessors, (3038), 890 states have return successors, (3104), 3010 states have call predecessors, (3104), 3038 states have call successors, (3104) [2022-11-23 16:06:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10121 states to 10121 states and 13801 transitions. [2022-11-23 16:06:16,288 INFO L78 Accepts]: Start accepts. Automaton has 10121 states and 13801 transitions. Word has length 359 [2022-11-23 16:06:16,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:06:16,288 INFO L495 AbstractCegarLoop]: Abstraction has 10121 states and 13801 transitions. [2022-11-23 16:06:16,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-23 16:06:16,289 INFO L276 IsEmpty]: Start isEmpty. Operand 10121 states and 13801 transitions. [2022-11-23 16:06:16,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-11-23 16:06:16,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:06:16,295 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:06:16,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:06:16,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:06:16,508 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:06:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:06:16,508 INFO L85 PathProgramCache]: Analyzing trace with hash 870147083, now seen corresponding path program 2 times [2022-11-23 16:06:16,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:06:16,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570059442] [2022-11-23 16:06:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:16,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:06:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:06:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2022-11-23 16:06:18,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:06:18,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570059442] [2022-11-23 16:06:18,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570059442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:06:18,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:06:18,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:06:18,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009575705] [2022-11-23 16:06:18,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:06:18,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:06:18,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:06:18,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:06:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:06:18,787 INFO L87 Difference]: Start difference. First operand 10121 states and 13801 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 16:06:20,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:25,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:28,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:06:28,113 INFO L93 Difference]: Finished difference Result 20294 states and 27730 transitions. [2022-11-23 16:06:28,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:06:28,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 367 [2022-11-23 16:06:28,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:06:28,156 INFO L225 Difference]: With dead ends: 20294 [2022-11-23 16:06:28,157 INFO L226 Difference]: Without dead ends: 10202 [2022-11-23 16:06:28,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:06:28,189 INFO L413 NwaCegarLoop]: 1442 mSDtfsCounter, 7 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4302 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:06:28,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4302 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 745 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2022-11-23 16:06:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10202 states. [2022-11-23 16:06:28,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10202 to 10175. [2022-11-23 16:06:28,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10175 states, 6234 states have (on average 1.2367661212704524) internal successors, (7710), 6409 states have internal predecessors, (7710), 3046 states have call successors, (3046), 885 states have call predecessors, (3046), 893 states have return successors, (3116), 3018 states have call predecessors, (3116), 3046 states have call successors, (3116) [2022-11-23 16:06:28,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10175 states to 10175 states and 13872 transitions. [2022-11-23 16:06:28,882 INFO L78 Accepts]: Start accepts. Automaton has 10175 states and 13872 transitions. Word has length 367 [2022-11-23 16:06:28,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:06:28,883 INFO L495 AbstractCegarLoop]: Abstraction has 10175 states and 13872 transitions. [2022-11-23 16:06:28,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-23 16:06:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 10175 states and 13872 transitions. [2022-11-23 16:06:28,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-11-23 16:06:28,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:06:28,890 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:06:28,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 16:06:28,890 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:06:28,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:06:28,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1503249878, now seen corresponding path program 1 times [2022-11-23 16:06:28,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:06:28,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464171203] [2022-11-23 16:06:28,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:28,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:06:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:06:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-23 16:06:30,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:06:30,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464171203] [2022-11-23 16:06:30,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464171203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:06:30,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319580361] [2022-11-23 16:06:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:30,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:06:30,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:06:30,576 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:06:30,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:06:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:06:34,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 6640 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 16:06:34,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:06:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-11-23 16:06:34,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:06:34,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319580361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:06:34,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:06:34,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-23 16:06:34,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901282242] [2022-11-23 16:06:34,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:06:34,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:06:34,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:06:34,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:06:34,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:06:34,776 INFO L87 Difference]: Start difference. First operand 10175 states and 13872 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-23 16:06:36,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:41,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:46,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:06:46,008 INFO L93 Difference]: Finished difference Result 20384 states and 27841 transitions. [2022-11-23 16:06:46,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:06:46,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) Word has length 369 [2022-11-23 16:06:46,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:06:46,048 INFO L225 Difference]: With dead ends: 20384 [2022-11-23 16:06:46,048 INFO L226 Difference]: Without dead ends: 10238 [2022-11-23 16:06:46,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:06:46,078 INFO L413 NwaCegarLoop]: 1440 mSDtfsCounter, 6 mSDsluCounter, 4308 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5748 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:06:46,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5748 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 988 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2022-11-23 16:06:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10238 states. [2022-11-23 16:06:46,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10238 to 10191. [2022-11-23 16:06:46,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10191 states, 6250 states have (on average 1.23616) internal successors, (7726), 6417 states have internal predecessors, (7726), 3046 states have call successors, (3046), 885 states have call predecessors, (3046), 893 states have return successors, (3116), 3026 states have call predecessors, (3116), 3046 states have call successors, (3116) [2022-11-23 16:06:46,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10191 states to 10191 states and 13888 transitions. [2022-11-23 16:06:46,687 INFO L78 Accepts]: Start accepts. Automaton has 10191 states and 13888 transitions. Word has length 369 [2022-11-23 16:06:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:06:46,688 INFO L495 AbstractCegarLoop]: Abstraction has 10191 states and 13888 transitions. [2022-11-23 16:06:46,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-23 16:06:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 10191 states and 13888 transitions. [2022-11-23 16:06:46,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-11-23 16:06:46,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:06:46,695 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:06:46,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 16:06:46,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 16:06:46,900 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:06:46,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:06:46,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1415884821, now seen corresponding path program 2 times [2022-11-23 16:06:46,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:06:46,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922024317] [2022-11-23 16:06:46,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:46,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:06:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:06:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2022-11-23 16:06:48,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:06:48,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922024317] [2022-11-23 16:06:48,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922024317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:06:48,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:06:48,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:06:48,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974128030] [2022-11-23 16:06:48,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:06:48,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:06:48,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:06:48,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:06:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:06:48,584 INFO L87 Difference]: Start difference. First operand 10191 states and 13888 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-23 16:06:50,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:55,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:06:59,372 INFO L93 Difference]: Finished difference Result 20416 states and 27873 transitions. [2022-11-23 16:06:59,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:06:59,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) Word has length 377 [2022-11-23 16:06:59,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:06:59,401 INFO L225 Difference]: With dead ends: 20416 [2022-11-23 16:06:59,402 INFO L226 Difference]: Without dead ends: 10254 [2022-11-23 16:06:59,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:06:59,425 INFO L413 NwaCegarLoop]: 1443 mSDtfsCounter, 6 mSDsluCounter, 4314 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5757 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:06:59,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5757 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 988 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2022-11-23 16:06:59,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10254 states. [2022-11-23 16:06:59,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10254 to 10207. [2022-11-23 16:06:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10207 states, 6266 states have (on average 1.2355569741461858) internal successors, (7742), 6425 states have internal predecessors, (7742), 3046 states have call successors, (3046), 885 states have call predecessors, (3046), 893 states have return successors, (3116), 3034 states have call predecessors, (3116), 3046 states have call successors, (3116) [2022-11-23 16:06:59,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10207 states to 10207 states and 13904 transitions. [2022-11-23 16:06:59,950 INFO L78 Accepts]: Start accepts. Automaton has 10207 states and 13904 transitions. Word has length 377 [2022-11-23 16:06:59,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:06:59,951 INFO L495 AbstractCegarLoop]: Abstraction has 10207 states and 13904 transitions. [2022-11-23 16:06:59,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-23 16:06:59,951 INFO L276 IsEmpty]: Start isEmpty. Operand 10207 states and 13904 transitions. [2022-11-23 16:06:59,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-23 16:06:59,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:06:59,958 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:06:59,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 16:06:59,958 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:06:59,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:06:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1597214636, now seen corresponding path program 1 times [2022-11-23 16:06:59,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:06:59,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532018175] [2022-11-23 16:06:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:59,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:07:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-23 16:07:02,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:07:02,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532018175] [2022-11-23 16:07:02,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532018175] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:07:02,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616472666] [2022-11-23 16:07:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:02,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:07:02,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:07:02,164 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:07:02,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 16:07:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:06,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 6886 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 16:07:06,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:08:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-23 16:08:31,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:08:31,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616472666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:31,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:08:31,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-11-23 16:08:31,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894201464] [2022-11-23 16:08:31,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:31,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:08:31,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:31,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:08:31,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:08:31,572 INFO L87 Difference]: Start difference. First operand 10207 states and 13904 transitions. Second operand has 6 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (43), 2 states have call predecessors, (43), 1 states have call successors, (43) [2022-11-23 16:08:33,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:08:41,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:08:48,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:48,324 INFO L93 Difference]: Finished difference Result 10217 states and 13913 transitions. [2022-11-23 16:08:48,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:08:48,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (43), 2 states have call predecessors, (43), 1 states have call successors, (43) Word has length 385 [2022-11-23 16:08:48,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:48,363 INFO L225 Difference]: With dead ends: 10217 [2022-11-23 16:08:48,364 INFO L226 Difference]: Without dead ends: 10215 [2022-11-23 16:08:48,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 16:08:48,371 INFO L413 NwaCegarLoop]: 1854 mSDtfsCounter, 1045 mSDsluCounter, 5624 mSDsCounter, 0 mSdLazyCounter, 1827 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 7478 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1827 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:48,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 7478 Invalid, 1829 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1827 Invalid, 2 Unknown, 0 Unchecked, 15.9s Time] [2022-11-23 16:08:48,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10215 states. [2022-11-23 16:08:48,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10215 to 10207. [2022-11-23 16:08:48,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10207 states, 6266 states have (on average 1.2349186083625918) internal successors, (7738), 6425 states have internal predecessors, (7738), 3046 states have call successors, (3046), 885 states have call predecessors, (3046), 893 states have return successors, (3116), 3034 states have call predecessors, (3116), 3046 states have call successors, (3116) [2022-11-23 16:08:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10207 states to 10207 states and 13900 transitions. [2022-11-23 16:08:48,975 INFO L78 Accepts]: Start accepts. Automaton has 10207 states and 13900 transitions. Word has length 385 [2022-11-23 16:08:48,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:48,976 INFO L495 AbstractCegarLoop]: Abstraction has 10207 states and 13900 transitions. [2022-11-23 16:08:48,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (43), 2 states have call predecessors, (43), 1 states have call successors, (43) [2022-11-23 16:08:48,976 INFO L276 IsEmpty]: Start isEmpty. Operand 10207 states and 13900 transitions. [2022-11-23 16:08:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-11-23 16:08:48,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:48,985 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:08:49,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 16:08:49,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 16:08:49,200 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:08:49,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:49,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2090860421, now seen corresponding path program 1 times [2022-11-23 16:08:49,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:49,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050638167] [2022-11-23 16:08:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:49,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2022-11-23 16:08:51,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:51,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050638167] [2022-11-23 16:08:51,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050638167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:51,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:51,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:08:51,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256484110] [2022-11-23 16:08:51,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:51,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:08:51,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:51,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:08:51,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:08:51,159 INFO L87 Difference]: Start difference. First operand 10207 states and 13900 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-23 16:08:53,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:08:57,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:09:03,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:03,475 INFO L93 Difference]: Finished difference Result 22713 states and 30902 transitions. [2022-11-23 16:09:03,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:09:03,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 415 [2022-11-23 16:09:03,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:03,515 INFO L225 Difference]: With dead ends: 22713 [2022-11-23 16:09:03,515 INFO L226 Difference]: Without dead ends: 12535 [2022-11-23 16:09:03,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:09:03,532 INFO L413 NwaCegarLoop]: 2238 mSDtfsCounter, 1280 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 20 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 4130 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:03,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 4130 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1416 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2022-11-23 16:09:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12535 states. [2022-11-23 16:09:04,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12535 to 12523. [2022-11-23 16:09:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12523 states, 7715 states have (on average 1.2326636422553467) internal successors, (9510), 7909 states have internal predecessors, (9510), 3685 states have call successors, (3685), 1112 states have call predecessors, (3685), 1121 states have return successors, (3760), 3667 states have call predecessors, (3760), 3685 states have call successors, (3760) [2022-11-23 16:09:04,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12523 states to 12523 states and 16955 transitions. [2022-11-23 16:09:04,055 INFO L78 Accepts]: Start accepts. Automaton has 12523 states and 16955 transitions. Word has length 415 [2022-11-23 16:09:04,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:04,056 INFO L495 AbstractCegarLoop]: Abstraction has 12523 states and 16955 transitions. [2022-11-23 16:09:04,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-23 16:09:04,056 INFO L276 IsEmpty]: Start isEmpty. Operand 12523 states and 16955 transitions. [2022-11-23 16:09:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-11-23 16:09:04,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:04,068 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:04,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 16:09:04,069 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:09:04,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:04,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1791413613, now seen corresponding path program 1 times [2022-11-23 16:09:04,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:09:04,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390364924] [2022-11-23 16:09:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:04,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:09:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2022-11-23 16:09:05,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:09:05,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390364924] [2022-11-23 16:09:05,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390364924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:05,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:09:05,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:09:05,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618504464] [2022-11-23 16:09:05,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:05,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:09:05,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:09:05,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:09:05,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:09:05,865 INFO L87 Difference]: Start difference. First operand 12523 states and 16955 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-23 16:09:07,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:09:11,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:09:14,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:14,402 INFO L93 Difference]: Finished difference Result 25837 states and 35176 transitions. [2022-11-23 16:09:14,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:09:14,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 422 [2022-11-23 16:09:14,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:14,464 INFO L225 Difference]: With dead ends: 25837 [2022-11-23 16:09:14,464 INFO L226 Difference]: Without dead ends: 16091 [2022-11-23 16:09:14,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:09:14,493 INFO L413 NwaCegarLoop]: 1785 mSDtfsCounter, 1472 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:14,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 3081 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 477 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-11-23 16:09:14,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16091 states. [2022-11-23 16:09:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16091 to 16078. [2022-11-23 16:09:15,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16078 states, 9923 states have (on average 1.2357150055426787) internal successors, (12262), 10181 states have internal predecessors, (12262), 4737 states have call successors, (4737), 1410 states have call predecessors, (4737), 1416 states have return successors, (4840), 4697 states have call predecessors, (4840), 4737 states have call successors, (4840) [2022-11-23 16:09:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16078 states to 16078 states and 21839 transitions. [2022-11-23 16:09:15,261 INFO L78 Accepts]: Start accepts. Automaton has 16078 states and 21839 transitions. Word has length 422 [2022-11-23 16:09:15,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:15,262 INFO L495 AbstractCegarLoop]: Abstraction has 16078 states and 21839 transitions. [2022-11-23 16:09:15,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-23 16:09:15,262 INFO L276 IsEmpty]: Start isEmpty. Operand 16078 states and 21839 transitions. [2022-11-23 16:09:15,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-11-23 16:09:15,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:15,271 INFO L195 NwaCegarLoop]: trace histogram [16, 13, 13, 12, 8, 8, 8, 8, 8, 8, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:15,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 16:09:15,272 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:09:15,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:15,272 INFO L85 PathProgramCache]: Analyzing trace with hash 653558935, now seen corresponding path program 1 times [2022-11-23 16:09:15,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:09:15,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603885997] [2022-11-23 16:09:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:15,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:09:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-23 16:09:17,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:09:17,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603885997] [2022-11-23 16:09:17,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603885997] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:09:17,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765723420] [2022-11-23 16:09:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:17,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:09:17,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:09:17,847 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:09:17,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3257ca-5ecb-4a88-a112-abcb7274f8b9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 16:09:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:23,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 8395 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 16:09:23,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-23 16:10:51,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:55,932 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 8191 disjunctions. This might take some time... [2022-11-23 16:11:01,497 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 8191 disjunctions. [2022-11-23 16:11:01,584 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 16383 disjunctions. This might take some time... [2022-11-23 16:11:24,804 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 16383 disjunctions. [2022-11-23 16:11:24,929 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 32767 disjunctions. This might take some time... [2022-11-23 16:13:12,111 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 32767 disjunctions. [2022-11-23 16:13:12,406 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 65535 disjunctions. This might take some time...