./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_fs-nfs-nfs_layout_nfsv41_files.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aac9562-c31c-4eee-880f-6058e3ac080a/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aac9562-c31c-4eee-880f-6058e3ac080a/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_6aac9562-c31c-4eee-880f-6058e3ac080a/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aac9562-c31c-4eee-880f-6058e3ac080a/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aac9562-c31c-4eee-880f-6058e3ac080a/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_6aac9562-c31c-4eee-880f-6058e3ac080a/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 16a9a34d40babef5c6ef3662e22f59267f6e49b89d364b5566e6d47ef433b5da --- 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 14:48:42,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:48:42,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:48:42,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:48:42,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:48:42,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:48:42,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:48:42,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:48:42,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:48:42,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:48:42,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:48:42,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:48:42,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:48:42,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:48:42,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:48:42,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:48:42,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:48:42,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:48:42,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:48:42,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:48:42,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:48:42,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:48:42,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:48:42,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:48:42,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:48:42,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:48:42,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:48:42,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:48:42,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:48:42,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:48:42,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:48:42,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:48:42,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:48:42,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:48:42,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:48:42,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:48:42,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:48:42,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:48:42,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:48:42,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:48:42,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:48:42,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aac9562-c31c-4eee-880f-6058e3ac080a/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:48:42,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:48:42,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:48:42,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:48:42,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:48:42,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:48:42,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:48:42,370 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:48:42,370 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:48:42,370 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:48:42,370 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:48:42,372 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:48:42,372 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:48:42,372 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:48:42,373 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:48:42,373 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:48:42,373 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:48:42,373 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:48:42,374 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:48:42,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:48:42,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:48:42,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:48:42,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:48:42,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:48:42,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:48:42,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:48:42,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:48:42,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:48:42,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:48:42,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:48:42,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:48:42,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:48:42,378 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:48:42,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:48:42,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:48:42,379 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:48:42,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:48:42,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:48:42,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:48:42,380 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_6aac9562-c31c-4eee-880f-6058e3ac080a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aac9562-c31c-4eee-880f-6058e3ac080a/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16a9a34d40babef5c6ef3662e22f59267f6e49b89d364b5566e6d47ef433b5da [2022-11-23 14:48:42,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:48:42,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:48:42,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:48:42,786 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:48:42,787 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:48:42,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aac9562-c31c-4eee-880f-6058e3ac080a/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2022-11-23 14:48:46,011 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:48:46,765 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:48:46,766 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aac9562-c31c-4eee-880f-6058e3ac080a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2022-11-23 14:48:46,832 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aac9562-c31c-4eee-880f-6058e3ac080a/bin/utaipan-Q6hlc19bkW/data/b31646e76/78381dee07fc40dc9f50f69d5c55d6a6/FLAGbb6db2d3c [2022-11-23 14:48:46,850 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aac9562-c31c-4eee-880f-6058e3ac080a/bin/utaipan-Q6hlc19bkW/data/b31646e76/78381dee07fc40dc9f50f69d5c55d6a6 [2022-11-23 14:48:46,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:48:46,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:48:46,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:48:46,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:48:46,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:48:46,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:48:46" (1/1) ... [2022-11-23 14:48:46,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66dfe83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:46, skipping insertion in model container [2022-11-23 14:48:46,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:48:46" (1/1) ... [2022-11-23 14:48:46,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:48:47,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:48:51,210 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_6aac9562-c31c-4eee-880f-6058e3ac080a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463372,463385] [2022-11-23 14:48:51,214 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_6aac9562-c31c-4eee-880f-6058e3ac080a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463517,463530] [2022-11-23 14:48:51,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:48:51,256 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:48:51,805 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_6aac9562-c31c-4eee-880f-6058e3ac080a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463372,463385] [2022-11-23 14:48:51,805 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_6aac9562-c31c-4eee-880f-6058e3ac080a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463517,463530] [2022-11-23 14:48:51,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:48:52,027 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:48:52,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:52 WrapperNode [2022-11-23 14:48:52,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:48:52,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:48:52,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:48:52,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:48:52,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:52" (1/1) ... [2022-11-23 14:48:52,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:52" (1/1) ... [2022-11-23 14:48:52,313 INFO L138 Inliner]: procedures = 518, calls = 2128, calls flagged for inlining = 214, calls inlined = 173, statements flattened = 5322 [2022-11-23 14:48:52,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:48:52,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:48:52,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:48:52,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:48:52,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:52" (1/1) ... [2022-11-23 14:48:52,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:52" (1/1) ... [2022-11-23 14:48:52,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:52" (1/1) ... [2022-11-23 14:48:52,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:52" (1/1) ... [2022-11-23 14:48:52,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:52" (1/1) ... [2022-11-23 14:48:52,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:52" (1/1) ... [2022-11-23 14:48:52,612 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:52" (1/1) ... [2022-11-23 14:48:52,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:52" (1/1) ... [2022-11-23 14:48:52,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:48:52,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:48:52,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:48:52,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:48:52,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:52" (1/1) ... [2022-11-23 14:48:52,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:48:52,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aac9562-c31c-4eee-880f-6058e3ac080a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:48:52,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aac9562-c31c-4eee-880f-6058e3ac080a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:48:52,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aac9562-c31c-4eee-880f-6058e3ac080a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:48:52,759 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_ds_info [2022-11-23 14:48:52,759 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_ds_info [2022-11-23 14:48:52,759 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-23 14:48:52,759 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_prepare [2022-11-23 14:48:52,760 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_prepare [2022-11-23 14:48:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_prepare_ds [2022-11-23 14:48:52,760 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_prepare_ds [2022-11-23 14:48:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_write [2022-11-23 14:48:52,760 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_write [2022-11-23 14:48:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:48:52,761 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:48:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-23 14:48:52,761 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-23 14:48:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:48:52,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:48:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-23 14:48:52,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-23 14:48:52,762 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_init_commit [2022-11-23 14:48:52,762 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_init_commit [2022-11-23 14:48:52,762 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_init_decode_pages [2022-11-23 14:48:52,763 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_init_decode_pages [2022-11-23 14:48:52,763 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 14:48:52,763 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 14:48:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_lseg [2022-11-23 14:48:52,764 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_lseg [2022-11-23 14:48:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_SERVER [2022-11-23 14:48:52,765 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_SERVER [2022-11-23 14:48:52,765 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_select_ds_fh [2022-11-23 14:48:52,765 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_select_ds_fh [2022-11-23 14:48:52,766 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-23 14:48:52,766 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-23 14:48:52,766 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_LSEG [2022-11-23 14:48:52,766 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_LSEG [2022-11-23 14:48:52,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 14:48:52,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 14:48:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_read [2022-11-23 14:48:52,767 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_read [2022-11-23 14:48:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-23 14:48:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:48:52,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:48:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_j_index [2022-11-23 14:48:52,768 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_j_index [2022-11-23 14:48:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:48:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_104 [2022-11-23 14:48:52,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_104 [2022-11-23 14:48:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_count_stats [2022-11-23 14:48:52,769 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_count_stats [2022-11-23 14:48:52,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_104___0 [2022-11-23 14:48:52,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_104___0 [2022-11-23 14:48:52,770 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:48:52,771 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:48:52,771 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_get_lseg [2022-11-23 14:48:52,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_get_lseg [2022-11-23 14:48:52,771 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 14:48:52,772 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 14:48:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:48:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_pageio_reset_read_mds [2022-11-23 14:48:52,772 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_pageio_reset_read_mds [2022-11-23 14:48:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_recover_commit_reqs [2022-11-23 14:48:52,773 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_recover_commit_reqs [2022-11-23 14:48:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:48:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 14:48:52,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 14:48:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_test [2022-11-23 14:48:52,774 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_test [2022-11-23 14:48:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_write [2022-11-23 14:48:52,774 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_write [2022-11-23 14:48:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_commit_list [2022-11-23 14:48:52,774 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_commit_list [2022-11-23 14:48:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:48:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_release [2022-11-23 14:48:52,775 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_release [2022-11-23 14:48:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-23 14:48:52,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-23 14:48:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_layout_hdr [2022-11-23 14:48:52,777 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_layout_hdr [2022-11-23 14:48:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:48:52,777 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:48:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_find_or_create_ds_client [2022-11-23 14:48:52,778 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_find_or_create_ds_client [2022-11-23 14:48:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 14:48:52,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 14:48:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-23 14:48:52,779 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-23 14:48:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2022-11-23 14:48:52,779 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2022-11-23 14:48:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_deveiceid_node [2022-11-23 14:48:52,779 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_deveiceid_node [2022-11-23 14:48:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:48:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 14:48:52,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 14:48:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 14:48:52,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 14:48:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_request_remove_commit_list [2022-11-23 14:48:52,781 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_request_remove_commit_list [2022-11-23 14:48:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2022-11-23 14:48:52,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_calloc [2022-11-23 14:48:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_commit_done [2022-11-23 14:48:52,782 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_commit_done [2022-11-23 14:48:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-23 14:48:52,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-23 14:48:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:48:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_FROM_HDR [2022-11-23 14:48:52,783 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_FROM_HDR [2022-11-23 14:48:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_inline_decode [2022-11-23 14:48:52,783 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_inline_decode [2022-11-23 14:48:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 14:48:52,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 14:48:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:48:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_layout_hdr [2022-11-23 14:48:52,787 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_layout_hdr [2022-11-23 14:48:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure req_offset [2022-11-23 14:48:52,788 INFO L138 BoogieDeclarations]: Found implementation of procedure req_offset [2022-11-23 14:48:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:48:52,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:48:52,789 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_mark_request_commit [2022-11-23 14:48:52,790 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_mark_request_commit [2022-11-23 14:48:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-23 14:48:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-23 14:48:52,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-23 14:48:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-23 14:48:52,795 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-23 14:48:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-23 14:48:52,795 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:48:52,796 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:48:52,796 INFO L130 BoogieDeclarations]: Found specification of procedure _filelayout_free_lseg [2022-11-23 14:48:52,796 INFO L138 BoogieDeclarations]: Found implementation of procedure _filelayout_free_lseg [2022-11-23 14:48:52,796 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_lseg [2022-11-23 14:48:52,796 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_lseg [2022-11-23 14:48:52,796 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 14:48:52,796 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 14:48:52,797 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_set_rw_stateid [2022-11-23 14:48:52,797 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_set_rw_stateid [2022-11-23 14:48:52,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:48:52,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:48:52,797 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 14:48:52,797 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 14:48:52,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:48:52,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:48:52,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:48:52,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:48:52,798 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_count_stats [2022-11-23 14:48:52,798 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_count_stats [2022-11-23 14:48:52,798 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_DEVID_NODE [2022-11-23 14:48:52,798 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_DEVID_NODE [2022-11-23 14:48:52,799 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_resend_writes [2022-11-23 14:48:52,799 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_resend_writes [2022-11-23 14:48:52,799 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_sequence_done [2022-11-23 14:48:52,799 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_sequence_done [2022-11-23 14:48:52,799 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_free_deviceid [2022-11-23 14:48:52,799 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_free_deviceid [2022-11-23 14:48:52,799 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_retry_commit [2022-11-23 14:48:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_retry_commit [2022-11-23 14:48:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_scan_commit_lists [2022-11-23 14:48:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_scan_commit_lists [2022-11-23 14:48:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_fenceme [2022-11-23 14:48:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_fenceme [2022-11-23 14:48:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_pagelist [2022-11-23 14:48:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_pagelist [2022-11-23 14:48:52,801 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_put_lseg [2022-11-23 14:48:52,801 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_put_lseg [2022-11-23 14:48:52,801 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-23 14:48:52,801 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-23 14:48:52,801 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2022-11-23 14:48:52,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2022-11-23 14:48:52,802 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_count_stats [2022-11-23 14:48:52,802 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_count_stats [2022-11-23 14:48:52,802 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_read [2022-11-23 14:48:52,802 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_read [2022-11-23 14:48:52,802 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_exit [2022-11-23 14:48:52,802 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_exit [2022-11-23 14:48:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 14:48:52,803 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 14:48:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-23 14:48:52,803 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-23 14:48:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_count_iostats [2022-11-23 14:48:52,803 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_count_iostats [2022-11-23 14:48:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_clear_request_commit [2022-11-23 14:48:52,804 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_clear_request_commit [2022-11-23 14:48:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:48:52,805 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 14:48:52,805 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 14:48:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_FILEID [2022-11-23 14:48:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_FILEID [2022-11-23 14:48:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_ds_index [2022-11-23 14:48:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_ds_index [2022-11-23 14:48:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_dserver_offset [2022-11-23 14:48:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_dserver_offset [2022-11-23 14:48:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:48:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_put_deviceid [2022-11-23 14:48:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_put_deviceid [2022-11-23 14:48:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-23 14:48:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-23 14:48:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:48:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_prepare [2022-11-23 14:48:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_prepare [2022-11-23 14:48:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_I [2022-11-23 14:48:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_I [2022-11-23 14:48:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 14:48:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 14:48:52,809 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-23 14:48:52,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-23 14:48:52,809 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_put_client [2022-11-23 14:48:52,809 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_put_client [2022-11-23 14:48:52,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 14:48:52,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 14:48:52,809 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_call_done [2022-11-23 14:48:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_call_done [2022-11-23 14:48:52,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 14:48:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 14:48:52,810 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_release [2022-11-23 14:48:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_release [2022-11-23 14:48:52,810 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_setup_sequence [2022-11-23 14:48:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_setup_sequence [2022-11-23 14:48:52,810 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 14:48:52,811 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 14:48:52,811 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_commitdata_alloc [2022-11-23 14:48:52,811 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_commitdata_alloc [2022-11-23 14:48:52,811 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_set_scratch_buffer [2022-11-23 14:48:52,811 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_set_scratch_buffer [2022-11-23 14:48:52,811 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_pagelist [2022-11-23 14:48:52,811 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_pagelist [2022-11-23 14:48:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 14:48:52,812 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 14:48:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:48:52,812 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:48:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_call_done [2022-11-23 14:48:52,812 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_call_done [2022-11-23 14:48:52,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:48:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_fh_array [2022-11-23 14:48:52,813 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_fh_array [2022-11-23 14:48:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_pagelist [2022-11-23 14:48:52,813 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_pagelist [2022-11-23 14:48:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:48:52,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:48:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_initiate_commit [2022-11-23 14:48:52,818 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_initiate_commit [2022-11-23 14:48:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-11-23 14:48:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 14:48:52,818 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 14:48:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_103 [2022-11-23 14:48:52,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_103 [2022-11-23 14:48:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-23 14:48:52,819 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-23 14:48:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_print_deviceid [2022-11-23 14:48:52,820 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_print_deviceid [2022-11-23 14:48:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 14:48:52,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 14:48:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_update_layout [2022-11-23 14:48:52,821 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_update_layout [2022-11-23 14:48:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 14:48:52,821 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 14:48:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2022-11-23 14:48:52,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2022-11-23 14:48:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_release [2022-11-23 14:48:52,822 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_release [2022-11-23 14:48:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_mark_deviceid_unavailable [2022-11-23 14:48:52,822 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_mark_deviceid_unavailable [2022-11-23 14:48:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_test_devid_unavailable [2022-11-23 14:48:52,822 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_test_devid_unavailable [2022-11-23 14:48:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:48:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-23 14:48:52,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-23 14:48:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_prepare [2022-11-23 14:48:52,823 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_prepare [2022-11-23 14:48:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 14:48:52,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 14:48:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_to_mds [2022-11-23 14:48:52,824 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_to_mds [2022-11-23 14:48:53,868 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:48:53,872 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:48:54,496 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:48:57,561 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 14:48:57,785 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:48:58,954 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:48:58,955 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 14:48:58,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:48:58 BoogieIcfgContainer [2022-11-23 14:48:58,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:48:58,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:48:58,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:48:58,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:48:58,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:48:46" (1/3) ... [2022-11-23 14:48:58,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12876c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:48:58, skipping insertion in model container [2022-11-23 14:48:58,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:48:52" (2/3) ... [2022-11-23 14:48:58,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12876c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:48:58, skipping insertion in model container [2022-11-23 14:48:58,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:48:58" (3/3) ... [2022-11-23 14:48:58,969 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2022-11-23 14:48:58,991 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:48:58,991 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:48:59,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:48:59,113 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;@2a974428, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:48:59,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:48:59,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 1743 states, 1016 states have (on average 1.3031496062992125) internal successors, (1324), 1064 states have internal predecessors, (1324), 602 states have call successors, (602), 125 states have call predecessors, (602), 124 states have return successors, (596), 573 states have call predecessors, (596), 596 states have call successors, (596) [2022-11-23 14:48:59,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-23 14:48:59,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:48:59,174 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:59,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:48:59,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:48:59,182 INFO L85 PathProgramCache]: Analyzing trace with hash -547508697, now seen corresponding path program 1 times [2022-11-23 14:48:59,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:48:59,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424456720] [2022-11-23 14:48:59,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:48:59,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:48:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:49:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2022-11-23 14:49:00,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:49:00,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424456720] [2022-11-23 14:49:00,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424456720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:49:00,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:49:00,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:49:00,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423134965] [2022-11-23 14:49:00,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:49:00,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:49:00,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:49:00,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:49:00,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:49:00,469 INFO L87 Difference]: Start difference. First operand has 1743 states, 1016 states have (on average 1.3031496062992125) internal successors, (1324), 1064 states have internal predecessors, (1324), 602 states have call successors, (602), 125 states have call predecessors, (602), 124 states have return successors, (596), 573 states have call predecessors, (596), 596 states have call successors, (596) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 14:49:02,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:49:02,386 INFO L93 Difference]: Finished difference Result 5020 states and 7335 transitions. [2022-11-23 14:49:02,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:49:02,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 366 [2022-11-23 14:49:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:49:02,429 INFO L225 Difference]: With dead ends: 5020 [2022-11-23 14:49:02,429 INFO L226 Difference]: Without dead ends: 3281 [2022-11-23 14:49:02,448 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 14:49:02,451 INFO L413 NwaCegarLoop]: 2755 mSDtfsCounter, 2304 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 4923 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:49:02,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2304 Valid, 4923 Invalid, 670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 14:49:02,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-11-23 14:49:02,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3277. [2022-11-23 14:49:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3277 states, 1940 states have (on average 1.2974226804123712) internal successors, (2517), 2036 states have internal predecessors, (2517), 1092 states have call successors, (1092), 244 states have call predecessors, (1092), 244 states have return successors, (1092), 1044 states have call predecessors, (1092), 1092 states have call successors, (1092) [2022-11-23 14:49:02,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 4701 transitions. [2022-11-23 14:49:02,798 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 4701 transitions. Word has length 366 [2022-11-23 14:49:02,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:49:02,800 INFO L495 AbstractCegarLoop]: Abstraction has 3277 states and 4701 transitions. [2022-11-23 14:49:02,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 14:49:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 4701 transitions. [2022-11-23 14:49:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-11-23 14:49:02,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:49:02,813 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:02,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:49:02,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:49:02,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:49:02,815 INFO L85 PathProgramCache]: Analyzing trace with hash -317895056, now seen corresponding path program 1 times [2022-11-23 14:49:02,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:49:02,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139955196] [2022-11-23 14:49:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:49:02,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:49:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:49:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2022-11-23 14:49:03,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:49:03,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139955196] [2022-11-23 14:49:03,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139955196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:49:03,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:49:03,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:49:03,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845487825] [2022-11-23 14:49:03,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:49:03,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:49:03,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:49:03,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:49:03,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:49:03,412 INFO L87 Difference]: Start difference. First operand 3277 states and 4701 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 14:49:05,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:49:05,202 INFO L93 Difference]: Finished difference Result 8809 states and 12574 transitions. [2022-11-23 14:49:05,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:49:05,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 367 [2022-11-23 14:49:05,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:49:05,248 INFO L225 Difference]: With dead ends: 8809 [2022-11-23 14:49:05,249 INFO L226 Difference]: Without dead ends: 5601 [2022-11-23 14:49:05,270 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 14:49:05,274 INFO L413 NwaCegarLoop]: 3481 mSDtfsCounter, 2240 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2240 SdHoareTripleChecker+Valid, 5587 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:49:05,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2240 Valid, 5587 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 14:49:05,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5601 states. [2022-11-23 14:49:05,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5601 to 5597. [2022-11-23 14:49:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 3299 states have (on average 1.292209760533495) internal successors, (4263), 3476 states have internal predecessors, (4263), 1850 states have call successors, (1850), 447 states have call predecessors, (1850), 447 states have return successors, (1850), 1753 states have call predecessors, (1850), 1850 states have call successors, (1850) [2022-11-23 14:49:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 7963 transitions. [2022-11-23 14:49:05,663 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 7963 transitions. Word has length 367 [2022-11-23 14:49:05,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:49:05,665 INFO L495 AbstractCegarLoop]: Abstraction has 5597 states and 7963 transitions. [2022-11-23 14:49:05,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 14:49:05,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 7963 transitions. [2022-11-23 14:49:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-11-23 14:49:05,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:49:05,678 INFO L195 NwaCegarLoop]: trace histogram [36, 34, 34, 34, 34, 34, 34, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:49:05,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:49:05,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:49:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:49:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1169052751, now seen corresponding path program 1 times [2022-11-23 14:49:05,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:49:05,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960372433] [2022-11-23 14:49:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:49:05,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:49:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:49:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4629 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4626 trivial. 0 not checked. [2022-11-23 14:49:06,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:49:06,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960372433] [2022-11-23 14:49:06,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960372433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:49:06,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:49:06,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:49:06,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112398447] [2022-11-23 14:49:06,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:49:06,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:49:06,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:49:06,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:49:06,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:49:06,171 INFO L87 Difference]: Start difference. First operand 5597 states and 7963 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-23 14:49:07,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:49:07,739 INFO L93 Difference]: Finished difference Result 11870 states and 16820 transitions. [2022-11-23 14:49:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:49:07,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 383 [2022-11-23 14:49:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:49:07,793 INFO L225 Difference]: With dead ends: 11870 [2022-11-23 14:49:07,793 INFO L226 Difference]: Without dead ends: 6342 [2022-11-23 14:49:07,824 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 14:49:07,827 INFO L413 NwaCegarLoop]: 2378 mSDtfsCounter, 983 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 4499 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:49:07,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 4499 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:49:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6342 states. [2022-11-23 14:49:08,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6342 to 6340. [2022-11-23 14:49:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6340 states, 3726 states have (on average 1.2863660762211486) internal successors, (4793), 3933 states have internal predecessors, (4793), 2080 states have call successors, (2080), 533 states have call predecessors, (2080), 533 states have return successors, (2080), 1961 states have call predecessors, (2080), 2080 states have call successors, (2080) [2022-11-23 14:49:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6340 states to 6340 states and 8953 transitions. [2022-11-23 14:49:08,348 INFO L78 Accepts]: Start accepts. Automaton has 6340 states and 8953 transitions. Word has length 383 [2022-11-23 14:49:08,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:49:08,349 INFO L495 AbstractCegarLoop]: Abstraction has 6340 states and 8953 transitions. [2022-11-23 14:49:08,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-23 14:49:08,351 INFO L276 IsEmpty]: Start isEmpty. Operand 6340 states and 8953 transitions. [2022-11-23 14:49:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-23 14:49:08,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:49:08,364 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 35, 35, 35, 35, 35, 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] [2022-11-23 14:49:08,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:49:08,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:49:08,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:49:08,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1875879117, now seen corresponding path program 1 times [2022-11-23 14:49:08,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:49:08,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543448868] [2022-11-23 14:49:08,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:49:08,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:49:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:49:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4832 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2022-11-23 14:49:08,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:49:08,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543448868] [2022-11-23 14:49:08,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543448868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:49:08,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:49:08,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:49:08,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019353371] [2022-11-23 14:49:08,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:49:08,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:49:08,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:49:08,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:49:08,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:49:08,849 INFO L87 Difference]: Start difference. First operand 6340 states and 8953 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-23 14:49:11,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:49:11,170 INFO L93 Difference]: Finished difference Result 17989 states and 25405 transitions. [2022-11-23 14:49:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:49:11,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 403 [2022-11-23 14:49:11,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:49:11,288 INFO L225 Difference]: With dead ends: 17989 [2022-11-23 14:49:11,288 INFO L226 Difference]: Without dead ends: 11718 [2022-11-23 14:49:11,330 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 14:49:11,331 INFO L413 NwaCegarLoop]: 2672 mSDtfsCounter, 2280 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 4793 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:49:11,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2280 Valid, 4793 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 14:49:11,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11718 states. [2022-11-23 14:49:12,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11718 to 11708. [2022-11-23 14:49:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11708 states, 6903 states have (on average 1.2877009995654063) internal successors, (8889), 7295 states have internal predecessors, (8889), 3816 states have call successors, (3816), 988 states have call predecessors, (3816), 988 states have return successors, (3816), 3592 states have call predecessors, (3816), 3816 states have call successors, (3816) [2022-11-23 14:49:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11708 states to 11708 states and 16521 transitions. [2022-11-23 14:49:12,402 INFO L78 Accepts]: Start accepts. Automaton has 11708 states and 16521 transitions. Word has length 403 [2022-11-23 14:49:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:49:12,405 INFO L495 AbstractCegarLoop]: Abstraction has 11708 states and 16521 transitions. [2022-11-23 14:49:12,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-23 14:49:12,405 INFO L276 IsEmpty]: Start isEmpty. Operand 11708 states and 16521 transitions. [2022-11-23 14:49:12,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-23 14:49:12,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:49:12,419 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 35, 35, 35, 35, 35, 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] [2022-11-23 14:49:12,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:49:12,419 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:49:12,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:49:12,420 INFO L85 PathProgramCache]: Analyzing trace with hash 932337163, now seen corresponding path program 1 times [2022-11-23 14:49:12,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:49:12,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184559318] [2022-11-23 14:49:12,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:49:12,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:49:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:49:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4832 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2022-11-23 14:49:12,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:49:12,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184559318] [2022-11-23 14:49:12,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184559318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:49:12,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:49:12,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:49:12,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522591162] [2022-11-23 14:49:12,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:49:12,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:49:12,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:49:12,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:49:12,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:49:12,884 INFO L87 Difference]: Start difference. First operand 11708 states and 16521 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 14:49:15,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:49:15,015 INFO L93 Difference]: Finished difference Result 33991 states and 47952 transitions. [2022-11-23 14:49:15,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:49:15,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 407 [2022-11-23 14:49:15,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:49:15,148 INFO L225 Difference]: With dead ends: 33991 [2022-11-23 14:49:15,148 INFO L226 Difference]: Without dead ends: 22352 [2022-11-23 14:49:15,199 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 14:49:15,199 INFO L413 NwaCegarLoop]: 2712 mSDtfsCounter, 2281 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:49:15,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2281 Valid, 4833 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:49:15,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22352 states. [2022-11-23 14:49:16,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22352 to 22342. [2022-11-23 14:49:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22342 states, 13203 states have (on average 1.2875861546618192) internal successors, (17000), 13965 states have internal predecessors, (17000), 7240 states have call successors, (7240), 1898 states have call predecessors, (7240), 1898 states have return successors, (7240), 6806 states have call predecessors, (7240), 7240 states have call successors, (7240) [2022-11-23 14:49:16,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22342 states to 22342 states and 31480 transitions. [2022-11-23 14:49:16,629 INFO L78 Accepts]: Start accepts. Automaton has 22342 states and 31480 transitions. Word has length 407 [2022-11-23 14:49:16,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:49:16,632 INFO L495 AbstractCegarLoop]: Abstraction has 22342 states and 31480 transitions. [2022-11-23 14:49:16,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 14:49:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 22342 states and 31480 transitions. [2022-11-23 14:49:16,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-23 14:49:16,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:49:16,645 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 35, 35, 35, 35, 35, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:49:16,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:49:16,645 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:49:16,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:49:16,646 INFO L85 PathProgramCache]: Analyzing trace with hash -459240063, now seen corresponding path program 1 times [2022-11-23 14:49:16,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:49:16,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167426550] [2022-11-23 14:49:16,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:49:16,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:49:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:49:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4836 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4836 trivial. 0 not checked. [2022-11-23 14:49:17,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:49:17,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167426550] [2022-11-23 14:49:17,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167426550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:49:17,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:49:17,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:49:17,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378026366] [2022-11-23 14:49:17,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:49:17,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:49:17,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:49:17,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:49:17,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:49:17,276 INFO L87 Difference]: Start difference. First operand 22342 states and 31480 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-23 14:49:20,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:49:20,326 INFO L93 Difference]: Finished difference Result 63919 states and 90138 transitions. [2022-11-23 14:49:20,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:49:20,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 410 [2022-11-23 14:49:20,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:49:20,540 INFO L225 Difference]: With dead ends: 63919 [2022-11-23 14:49:20,541 INFO L226 Difference]: Without dead ends: 41646 [2022-11-23 14:49:20,618 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 14:49:20,619 INFO L413 NwaCegarLoop]: 3019 mSDtfsCounter, 2282 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2282 SdHoareTripleChecker+Valid, 5140 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:49:20,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2282 Valid, 5140 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:49:20,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41646 states. [2022-11-23 14:49:23,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41646 to 41636. [2022-11-23 14:49:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41636 states, 24718 states have (on average 1.287766000485476) internal successors, (31831), 26101 states have internal predecessors, (31831), 13418 states have call successors, (13418), 3499 states have call predecessors, (13418), 3499 states have return successors, (13418), 12657 states have call predecessors, (13418), 13418 states have call successors, (13418) [2022-11-23 14:49:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41636 states to 41636 states and 58667 transitions. [2022-11-23 14:49:23,921 INFO L78 Accepts]: Start accepts. Automaton has 41636 states and 58667 transitions. Word has length 410 [2022-11-23 14:49:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:49:23,922 INFO L495 AbstractCegarLoop]: Abstraction has 41636 states and 58667 transitions. [2022-11-23 14:49:23,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-23 14:49:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 41636 states and 58667 transitions. [2022-11-23 14:49:23,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-11-23 14:49:23,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:49:23,934 INFO L195 NwaCegarLoop]: trace histogram [38, 34, 34, 34, 34, 34, 34, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:49:23,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:49:23,935 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:49:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:49:23,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1502988392, now seen corresponding path program 1 times [2022-11-23 14:49:23,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:49:23,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372500185] [2022-11-23 14:49:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:49:23,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:49:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:49:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4791 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4784 trivial. 0 not checked. [2022-11-23 14:49:24,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:49:24,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372500185] [2022-11-23 14:49:24,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372500185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:49:24,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:49:24,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:49:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366689389] [2022-11-23 14:49:24,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:49:24,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:49:24,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:49:24,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:49:24,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:49:24,569 INFO L87 Difference]: Start difference. First operand 41636 states and 58667 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-23 14:49:28,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:49:28,448 INFO L93 Difference]: Finished difference Result 100167 states and 140905 transitions. [2022-11-23 14:49:28,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:49:28,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 411 [2022-11-23 14:49:28,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:49:28,932 INFO L225 Difference]: With dead ends: 100167 [2022-11-23 14:49:28,933 INFO L226 Difference]: Without dead ends: 58647 [2022-11-23 14:49:29,114 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 14:49:29,116 INFO L413 NwaCegarLoop]: 3230 mSDtfsCounter, 2240 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2240 SdHoareTripleChecker+Valid, 5334 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:49:29,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2240 Valid, 5334 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 14:49:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58647 states. [2022-11-23 14:49:32,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58647 to 58629. [2022-11-23 14:49:32,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58629 states, 34722 states have (on average 1.2848050227521457) internal successors, (44611), 36730 states have internal predecessors, (44611), 18851 states have call successors, (18851), 5055 states have call predecessors, (18851), 5055 states have return successors, (18851), 17709 states have call predecessors, (18851), 18851 states have call successors, (18851) [2022-11-23 14:49:32,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58629 states to 58629 states and 82313 transitions. [2022-11-23 14:49:32,840 INFO L78 Accepts]: Start accepts. Automaton has 58629 states and 82313 transitions. Word has length 411 [2022-11-23 14:49:32,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:49:32,841 INFO L495 AbstractCegarLoop]: Abstraction has 58629 states and 82313 transitions. [2022-11-23 14:49:32,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-23 14:49:32,842 INFO L276 IsEmpty]: Start isEmpty. Operand 58629 states and 82313 transitions. [2022-11-23 14:49:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2022-11-23 14:49:32,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:49:32,847 INFO L195 NwaCegarLoop]: trace histogram [38, 34, 34, 34, 34, 34, 34, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:49:32,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:49:32,848 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:49:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:49:32,848 INFO L85 PathProgramCache]: Analyzing trace with hash 127005471, now seen corresponding path program 1 times [2022-11-23 14:49:32,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:49:32,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321240460] [2022-11-23 14:49:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:49:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:49:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:49:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4791 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4784 trivial. 0 not checked. [2022-11-23 14:49:33,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:49:33,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321240460] [2022-11-23 14:49:33,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321240460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:49:33,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:49:33,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:49:33,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120787377] [2022-11-23 14:49:33,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:49:33,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:49:33,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:49:33,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:49:33,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:49:33,186 INFO L87 Difference]: Start difference. First operand 58629 states and 82313 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-23 14:49:37,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:49:37,708 INFO L93 Difference]: Finished difference Result 139114 states and 194823 transitions. [2022-11-23 14:49:37,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:49:37,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 412 [2022-11-23 14:49:37,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:49:38,151 INFO L225 Difference]: With dead ends: 139114 [2022-11-23 14:49:38,152 INFO L226 Difference]: Without dead ends: 80601 [2022-11-23 14:49:38,376 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 14:49:38,377 INFO L413 NwaCegarLoop]: 3271 mSDtfsCounter, 2239 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:49:38,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2239 Valid, 5375 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 14:49:38,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80601 states. [2022-11-23 14:49:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80601 to 80583. [2022-11-23 14:49:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80583 states, 47567 states have (on average 1.2806988037925453) internal successors, (60919), 50441 states have internal predecessors, (60919), 25817 states have call successors, (25817), 7198 states have call predecessors, (25817), 7198 states have return successors, (25817), 24109 states have call predecessors, (25817), 25817 states have call successors, (25817) [2022-11-23 14:49:42,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80583 states to 80583 states and 112553 transitions. [2022-11-23 14:49:42,680 INFO L78 Accepts]: Start accepts. Automaton has 80583 states and 112553 transitions. Word has length 412 [2022-11-23 14:49:42,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:49:42,681 INFO L495 AbstractCegarLoop]: Abstraction has 80583 states and 112553 transitions. [2022-11-23 14:49:42,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2022-11-23 14:49:42,682 INFO L276 IsEmpty]: Start isEmpty. Operand 80583 states and 112553 transitions. [2022-11-23 14:49:42,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-11-23 14:49:42,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:49:42,695 INFO L195 NwaCegarLoop]: trace histogram [40, 34, 34, 34, 34, 34, 34, 4, 4, 4, 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] [2022-11-23 14:49:42,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:49:42,696 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:49:42,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:49:42,696 INFO L85 PathProgramCache]: Analyzing trace with hash -656349245, now seen corresponding path program 1 times [2022-11-23 14:49:42,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:49:42,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874715652] [2022-11-23 14:49:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:49:42,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:49:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:49:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4961 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 4941 trivial. 0 not checked. [2022-11-23 14:49:43,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:49:43,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874715652] [2022-11-23 14:49:43,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874715652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:49:43,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:49:43,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:49:43,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962546143] [2022-11-23 14:49:43,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:49:43,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:49:43,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:49:43,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:49:43,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:49:43,931 INFO L87 Difference]: Start difference. First operand 80583 states and 112553 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43)