./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF --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 375b130c0dbad771cfaef84781fc161e5ae1fb4f9856cbf4d088e8198a97450e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:52:25,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:52:25,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:52:25,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:52:25,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:52:25,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:52:25,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:52:25,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:52:25,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:52:25,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:52:25,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:52:25,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:52:25,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:52:25,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:52:25,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:52:25,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:52:25,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:52:25,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:52:25,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:52:25,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:52:25,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:52:25,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:52:25,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:52:25,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:52:25,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:52:25,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:52:25,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:52:25,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:52:25,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:52:25,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:52:25,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:52:25,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:52:25,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:52:25,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:52:25,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:52:25,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:52:25,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:52:25,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:52:25,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:52:25,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:52:25,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:52:25,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:52:25,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:52:25,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:52:25,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:52:25,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:52:25,404 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:52:25,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:52:25,404 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:52:25,404 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:52:25,405 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:52:25,405 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:52:25,405 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:52:25,405 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:52:25,406 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:52:25,406 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:52:25,406 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:52:25,406 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:52:25,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:52:25,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:52:25,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:52:25,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:52:25,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:52:25,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:52:25,408 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:52:25,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:52:25,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:52:25,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:52:25,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:52:25,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:52:25,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:25,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:52:25,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:52:25,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:52:25,411 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:52:25,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:52:25,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:52:25,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:52:25,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:52:25,412 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375b130c0dbad771cfaef84781fc161e5ae1fb4f9856cbf4d088e8198a97450e [2021-11-12 22:52:25,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:52:25,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:52:25,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:52:25,662 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:52:25,662 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:52:25,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-12 22:52:25,729 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/data/8d2f88b34/dec23ecb54fa4261aecbe22749c764f4/FLAGc2550a192 [2021-11-12 22:52:26,671 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:52:26,672 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-12 22:52:26,739 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/data/8d2f88b34/dec23ecb54fa4261aecbe22749c764f4/FLAGc2550a192 [2021-11-12 22:52:27,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/data/8d2f88b34/dec23ecb54fa4261aecbe22749c764f4 [2021-11-12 22:52:27,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:52:27,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:52:27,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:27,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:52:27,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:52:27,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:27" (1/1) ... [2021-11-12 22:52:27,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171c318c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:27, skipping insertion in model container [2021-11-12 22:52:27,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:27" (1/1) ... [2021-11-12 22:52:27,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:52:27,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:52:29,459 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:52:30,281 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:52:30,283 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:52:30,523 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:52:30,531 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:52:32,271 WARN L228 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_a0895a81-4e25-4db9-bde4-f805bd191c0d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i[466142,466155] [2021-11-12 22:52:32,274 WARN L228 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_a0895a81-4e25-4db9-bde4-f805bd191c0d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i[466287,466300] [2021-11-12 22:52:32,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:32,347 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:52:32,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@765370ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:32, skipping insertion in model container [2021-11-12 22:52:32,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:32,348 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:52:32,350 INFO L158 Benchmark]: Toolchain (without parser) took 5268.66ms. Allocated memory was 111.1MB in the beginning and 157.3MB in the end (delta: 46.1MB). Free memory was 59.6MB in the beginning and 65.6MB in the end (delta: -6.1MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. [2021-11-12 22:52:32,351 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory was 64.5MB in the beginning and 64.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:32,353 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5264.48ms. Allocated memory was 111.1MB in the beginning and 157.3MB in the end (delta: 46.1MB). Free memory was 59.3MB in the beginning and 65.6MB in the end (delta: -6.3MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. [2021-11-12 22:52:32,355 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory was 64.5MB in the beginning and 64.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5264.48ms. Allocated memory was 111.1MB in the beginning and 157.3MB in the end (delta: 46.1MB). Free memory was 59.3MB in the beginning and 65.6MB in the end (delta: -6.3MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6866]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF --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 375b130c0dbad771cfaef84781fc161e5ae1fb4f9856cbf4d088e8198a97450e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:52:34,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:52:34,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:52:34,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:52:34,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:52:34,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:52:34,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:52:34,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:52:34,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:52:34,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:52:34,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:52:34,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:52:34,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:52:34,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:52:34,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:52:34,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:52:34,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:52:34,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:52:34,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:52:34,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:52:34,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:52:34,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:52:34,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:52:34,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:52:34,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:52:34,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:52:34,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:52:34,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:52:34,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:52:34,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:52:34,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:52:34,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:52:34,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:52:34,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:52:34,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:52:34,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:52:34,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:52:34,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:52:34,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:52:34,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:52:34,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:52:34,649 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:52:34,675 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:52:34,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:52:34,676 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:52:34,676 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:52:34,676 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:52:34,677 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:52:34,677 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:52:34,677 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:52:34,677 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:52:34,677 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:52:34,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:52:34,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:52:34,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:52:34,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:52:34,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:52:34,679 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:52:34,679 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:52:34,679 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:52:34,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:52:34,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:52:34,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:52:34,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:52:34,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:52:34,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:52:34,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:34,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:52:34,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:52:34,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:52:34,682 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:52:34,682 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:52:34,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:52:34,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:52:34,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:52:34,683 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375b130c0dbad771cfaef84781fc161e5ae1fb4f9856cbf4d088e8198a97450e [2021-11-12 22:52:35,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:52:35,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:52:35,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:52:35,125 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:52:35,126 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:52:35,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-12 22:52:35,200 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/data/fb995b311/28e7b815808a434ca3d7bb5fcd5651b0/FLAG9c6f3b325 [2021-11-12 22:52:36,266 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:52:36,267 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-12 22:52:36,331 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/data/fb995b311/28e7b815808a434ca3d7bb5fcd5651b0/FLAG9c6f3b325 [2021-11-12 22:52:36,583 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/data/fb995b311/28e7b815808a434ca3d7bb5fcd5651b0 [2021-11-12 22:52:36,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:52:36,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:52:36,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:36,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:52:36,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:52:36,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:36" (1/1) ... [2021-11-12 22:52:36,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ef20c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:36, skipping insertion in model container [2021-11-12 22:52:36,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:36" (1/1) ... [2021-11-12 22:52:36,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:52:36,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:52:41,593 WARN L228 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_a0895a81-4e25-4db9-bde4-f805bd191c0d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i[466142,466155] [2021-11-12 22:52:41,596 WARN L228 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_a0895a81-4e25-4db9-bde4-f805bd191c0d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i[466287,466300] [2021-11-12 22:52:41,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:41,681 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:52:41,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:52:42,310 WARN L228 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_a0895a81-4e25-4db9-bde4-f805bd191c0d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i[466142,466155] [2021-11-12 22:52:42,311 WARN L228 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_a0895a81-4e25-4db9-bde4-f805bd191c0d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i[466287,466300] [2021-11-12 22:52:42,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:42,346 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:52:42,835 WARN L228 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_a0895a81-4e25-4db9-bde4-f805bd191c0d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i[466142,466155] [2021-11-12 22:52:42,836 WARN L228 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_a0895a81-4e25-4db9-bde4-f805bd191c0d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i[466287,466300] [2021-11-12 22:52:42,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:43,175 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:52:43,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:43 WrapperNode [2021-11-12 22:52:43,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:43,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:52:43,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:52:43,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:52:43,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:43" (1/1) ... [2021-11-12 22:52:43,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:43" (1/1) ... [2021-11-12 22:52:43,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:52:43,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:52:43,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:52:43,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:52:43,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:43" (1/1) ... [2021-11-12 22:52:43,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:43" (1/1) ... [2021-11-12 22:52:43,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:43" (1/1) ... [2021-11-12 22:52:43,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:43" (1/1) ... [2021-11-12 22:52:43,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:43" (1/1) ... [2021-11-12 22:52:43,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:43" (1/1) ... [2021-11-12 22:52:43,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:43" (1/1) ... [2021-11-12 22:52:44,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:52:44,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:52:44,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:52:44,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:52:44,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:43" (1/1) ... [2021-11-12 22:52:44,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:44,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:44,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:52:44,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:52:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-12 22:52:44,123 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-12 22:52:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-12 22:52:44,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-12 22:52:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-12 22:52:44,123 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-12 22:52:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-12 22:52:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-12 22:52:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_mac_processor [2021-11-12 22:52:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_mac_processor [2021-11-12 22:52:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 22:52:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 22:52:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32 [2021-11-12 22:52:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32 [2021-11-12 22:52:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-12 22:52:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-12 22:52:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_regs_len [2021-11-12 22:52:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_regs_len [2021-11-12 22:52:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 22:52:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 22:52:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 22:52:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 22:52:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_on [2021-11-12 22:52:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_on [2021-11-12 22:52:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_rx_engine [2021-11-12 22:52:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_rx_engine [2021-11-12 22:52:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-12 22:52:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-12 22:52:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-12 22:52:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-12 22:52:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 22:52:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 22:52:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-12 22:52:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-12 22:52:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_link [2021-11-12 22:52:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_link [2021-11-12 22:52:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-12 22:52:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-12 22:52:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure jme_netpoll [2021-11-12 22:52:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_netpoll [2021-11-12 22:52:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_page [2021-11-12 22:52:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_page [2021-11-12 22:52:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 22:52:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 22:52:44,131 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-12 22:52:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-12 22:52:44,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 22:52:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 22:52:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-12 22:52:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-12 22:52:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-12 22:52:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-12 22:52:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-12 22:52:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-12 22:52:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-12 22:52:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 22:52:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 22:52:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-12 22:52:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-12 22:52:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:52:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-12 22:52:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-12 22:52:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure jread32 [2021-11-12 22:52:44,136 INFO L138 BoogieDeclarations]: Found implementation of procedure jread32 [2021-11-12 22:52:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-12 22:52:44,136 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-12 22:52:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:52:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:52:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 22:52:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure netif_receive_skb [2021-11-12 22:52:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 22:52:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 22:52:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_rx_pcc [2021-11-12 22:52:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_rx_pcc [2021-11-12 22:52:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-12 22:52:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-12 22:52:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-12 22:52:44,139 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-12 22:52:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_unicastaddr [2021-11-12 22:52:44,139 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_unicastaddr [2021-11-12 22:52:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 22:52:44,139 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 22:52:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-12 22:52:44,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-12 22:52:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 22:52:44,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 22:52:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_calibration [2021-11-12 22:52:44,141 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_calibration [2021-11-12 22:52:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 22:52:44,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 22:52:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure jme_restart_rx_engine [2021-11-12 22:52:44,142 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_restart_rx_engine [2021-11-12 22:52:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 22:52:44,142 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 22:52:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-12 22:52:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-12 22:52:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 22:52:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 22:52:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 22:52:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 22:52:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-12 22:52:44,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-12 22:52:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_hi_schedule [2021-11-12 22:52:44,144 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_hi_schedule [2021-11-12 22:52:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-12 22:52:44,145 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-12 22:52:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-12 22:52:44,145 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-12 22:52:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure jme_linkstat_from_phy [2021-11-12 22:52:44,146 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_linkstat_from_phy [2021-11-12 22:52:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_write [2021-11-12 22:52:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_write [2021-11-12 22:52:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_on [2021-11-12 22:52:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_on [2021-11-12 22:52:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:52:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 22:52:44,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 22:52:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 22:52:44,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 22:52:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-12 22:52:44,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-12 22:52:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-12 22:52:44,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-12 22:52:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure smi_phy_addr [2021-11-12 22:52:44,159 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_phy_addr [2021-11-12 22:52:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 22:52:44,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 22:52:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 22:52:44,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 22:52:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:52:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-12 22:52:44,160 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-12 22:52:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 22:52:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 22:52:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:52:44,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:52:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 22:52:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-12 22:52:44,161 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-12 22:52:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-12 22:52:44,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-12 22:52:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-12 22:52:44,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-12 22:52:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-12 22:52:44,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-12 22:52:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure reg_dbg [2021-11-12 22:52:44,163 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_dbg [2021-11-12 22:52:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 22:52:44,163 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 22:52:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 22:52:44,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 22:52:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-12 22:52:44,163 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-12 22:52:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-12 22:52:44,164 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-12 22:52:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 22:52:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure jme_start_irq [2021-11-12 22:52:44,164 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_start_irq [2021-11-12 22:52:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-12 22:52:44,164 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-12 22:52:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:52:44,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:52:44,165 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-12 22:52:44,165 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-12 22:52:44,165 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-12 22:52:44,165 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-12 22:52:44,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:52:44,165 INFO L130 BoogieDeclarations]: Found specification of procedure jme_fill_tx_map [2021-11-12 22:52:44,166 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_fill_tx_map [2021-11-12 22:52:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_tx_resources [2021-11-12 22:52:44,166 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_tx_resources [2021-11-12 22:52:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-12 22:52:44,166 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-12 22:52:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:52:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure jme_polling_mode [2021-11-12 22:52:44,167 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_polling_mode [2021-11-12 22:52:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:52:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 22:52:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable_pending [2021-11-12 22:52:44,167 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable_pending [2021-11-12 22:52:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 22:52:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 22:52:44,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 22:52:44,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 22:52:44,168 INFO L130 BoogieDeclarations]: Found specification of procedure jme_remove_one [2021-11-12 22:52:44,168 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_remove_one [2021-11-12 22:52:44,168 INFO L130 BoogieDeclarations]: Found specification of procedure jme_powersave_phy [2021-11-12 22:52:44,168 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_powersave_phy [2021-11-12 22:52:44,168 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_on [2021-11-12 22:52:44,169 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_on [2021-11-12 22:52:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_jme_cleanup_module_13_2 [2021-11-12 22:52:44,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_jme_cleanup_module_13_2 [2021-11-12 22:52:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure new_phy_power_ctrl [2021-11-12 22:52:44,169 INFO L138 BoogieDeclarations]: Found implementation of procedure new_phy_power_ctrl [2021-11-12 22:52:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-12 22:52:44,169 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-12 22:52:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-12 22:52:44,170 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-12 22:52:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure jme_intr_msi [2021-11-12 22:52:44,170 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_intr_msi [2021-11-12 22:52:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32f [2021-11-12 22:52:44,170 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32f [2021-11-12 22:52:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure smi_reg_addr [2021-11-12 22:52:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_reg_addr [2021-11-12 22:52:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_settings [2021-11-12 22:52:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_settings [2021-11-12 22:52:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-12 22:52:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-12 22:52:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-12 22:52:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-12 22:52:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 22:52:44,172 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 22:52:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 22:52:44,172 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 22:52:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-12 22:52:44,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-12 22:52:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-12 22:52:44,173 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-12 22:52:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure jme_nway_reset [2021-11-12 22:52:44,173 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_nway_reset [2021-11-12 22:52:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-12 22:52:44,173 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-12 22:52:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:52:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-12 22:52:44,174 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-12 22:52:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_112 [2021-11-12 22:52:44,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_112 [2021-11-12 22:52:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-12 22:52:44,174 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-12 22:52:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:52:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_rx_resources [2021-11-12 22:52:44,175 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_rx_resources [2021-11-12 22:52:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure jme_resume [2021-11-12 22:52:44,175 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_resume [2021-11-12 22:52:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure jme_tx_timeout [2021-11-12 22:52:44,175 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_tx_timeout [2021-11-12 22:52:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:52:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:52:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 22:52:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:52:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:52:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_tx_engine [2021-11-12 22:52:44,181 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_tx_engine [2021-11-12 22:52:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-12 22:52:44,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-12 22:52:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-12 22:52:44,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-12 22:52:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 22:52:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 22:52:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 22:52:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 22:52:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_off [2021-11-12 22:52:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_off [2021-11-12 22:52:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_103 [2021-11-12 22:52:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_103 [2021-11-12 22:52:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_setEA [2021-11-12 22:52:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_setEA [2021-11-12 22:52:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_105 [2021-11-12 22:52:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_105 [2021-11-12 22:52:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-12 22:52:44,186 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-12 22:52:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_multi [2021-11-12 22:52:44,186 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_multi [2021-11-12 22:52:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-12 22:52:44,186 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-12 22:52:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure mmapio_memcpy [2021-11-12 22:52:44,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mmapio_memcpy [2021-11-12 22:52:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 22:52:44,187 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 22:52:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 22:52:44,187 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 22:52:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_specreg_read [2021-11-12 22:52:44,187 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_specreg_read [2021-11-12 22:52:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure jme_clear_pm [2021-11-12 22:52:44,187 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_clear_pm [2021-11-12 22:52:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2021-11-12 22:52:44,188 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2021-11-12 22:52:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 22:52:44,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 22:52:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure jme_close [2021-11-12 22:52:44,188 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_close [2021-11-12 22:52:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 22:52:44,188 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 22:52:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-12 22:52:44,189 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-12 22:52:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_irq [2021-11-12 22:52:44,189 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_irq [2021-11-12 22:52:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 22:52:44,189 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 22:52:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure jme_shutdown [2021-11-12 22:52:44,189 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_shutdown [2021-11-12 22:52:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 22:52:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_off [2021-11-12 22:52:44,190 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_off [2021-11-12 22:52:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 22:52:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 22:52:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 22:52:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_phy_processor [2021-11-12 22:52:44,190 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_phy_processor [2021-11-12 22:52:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure jme_suspend [2021-11-12 22:52:44,191 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_suspend [2021-11-12 22:52:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 22:52:44,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 22:52:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_113 [2021-11-12 22:52:44,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_113 [2021-11-12 22:52:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_specreg_write [2021-11-12 22:52:44,192 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_specreg_write [2021-11-12 22:52:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-12 22:52:44,192 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-12 22:52:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_off [2021-11-12 22:52:44,192 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_off [2021-11-12 22:52:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_phyfifo_5level [2021-11-12 22:52:44,192 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_phyfifo_5level [2021-11-12 22:52:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-12 22:52:44,193 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-12 22:52:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_104 [2021-11-12 22:52:44,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_104 [2021-11-12 22:52:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_106 [2021-11-12 22:52:44,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_106 [2021-11-12 22:52:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-12 22:52:44,193 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-12 22:52:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_eeprom_len [2021-11-12 22:52:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_eeprom_len [2021-11-12 22:52:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2021-11-12 22:52:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2021-11-12 22:52:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 22:52:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 22:52:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_pcc_timer [2021-11-12 22:52:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_pcc_timer [2021-11-12 22:52:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure jme_interrupt_mode [2021-11-12 22:52:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_interrupt_mode [2021-11-12 22:52:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_settings [2021-11-12 22:52:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_settings [2021-11-12 22:52:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_read [2021-11-12 22:52:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_read [2021-11-12 22:52:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-12 22:52:44,196 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-12 22:52:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-12 22:52:44,196 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-12 22:52:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure jme_open [2021-11-12 22:52:44,196 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_open [2021-11-12 22:52:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 22:52:44,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 22:52:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-12 22:52:44,197 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-12 22:52:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2021-11-12 22:52:44,197 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2021-11-12 22:52:52,799 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 22:53:39,054 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 22:53:39,548 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:53:39,549 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-12 22:53:39,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:39 BoogieIcfgContainer [2021-11-12 22:53:39,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:53:39,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:53:39,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:53:39,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:53:39,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:52:36" (1/3) ... [2021-11-12 22:53:39,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6765f81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:39, skipping insertion in model container [2021-11-12 22:53:39,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:43" (2/3) ... [2021-11-12 22:53:39,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6765f81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:39, skipping insertion in model container [2021-11-12 22:53:39,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:39" (3/3) ... [2021-11-12 22:53:39,563 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-12 22:53:39,568 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:53:39,568 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:53:39,627 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:53:39,634 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:53:39,634 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:53:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 2701 states, 1805 states have (on average 1.2709141274238227) internal successors, (2294), 1854 states have internal predecessors, (2294), 742 states have call successors, (742), 158 states have call predecessors, (742), 157 states have return successors, (733), 717 states have call predecessors, (733), 733 states have call successors, (733) [2021-11-12 22:53:39,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-12 22:53:39,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:39,754 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:39,754 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:39,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:39,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1479212077, now seen corresponding path program 1 times [2021-11-12 22:53:39,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:39,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414854273] [2021-11-12 22:53:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:39,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:39,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:39,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:39,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:53:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:43,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:53:43,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2021-11-12 22:53:44,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-11-12 22:53:45,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:45,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414854273] [2021-11-12 22:53:45,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414854273] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:45,692 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:45,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:53:45,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532218185] [2021-11-12 22:53:45,694 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:45,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:53:45,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:45,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:53:45,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:53:45,733 INFO L87 Difference]: Start difference. First operand has 2701 states, 1805 states have (on average 1.2709141274238227) internal successors, (2294), 1854 states have internal predecessors, (2294), 742 states have call successors, (742), 158 states have call predecessors, (742), 157 states have return successors, (733), 717 states have call predecessors, (733), 733 states have call successors, (733) Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-12 22:53:47,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:53:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:49,000 INFO L93 Difference]: Finished difference Result 7238 states and 10184 transitions. [2021-11-12 22:53:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:53:49,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 263 [2021-11-12 22:53:49,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:49,057 INFO L225 Difference]: With dead ends: 7238 [2021-11-12 22:53:49,057 INFO L226 Difference]: Without dead ends: 4489 [2021-11-12 22:53:49,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:53:49,083 INFO L933 BasicCegarLoop]: 4290 mSDtfsCounter, 2633 mSDsluCounter, 3611 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2798.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2633 SdHoareTripleChecker+Valid, 7901 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.48ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2886.78ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:49,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2633 Valid, 7901 Invalid, 107 Unknown, 0 Unchecked, 43.48ms Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 1 Unknown, 0 Unchecked, 2886.78ms Time] [2021-11-12 22:53:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2021-11-12 22:53:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4487. [2021-11-12 22:53:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 2980 states have (on average 1.2570469798657717) internal successors, (3746), 3065 states have internal predecessors, (3746), 1222 states have call successors, (1222), 285 states have call predecessors, (1222), 284 states have return successors, (1223), 1188 states have call predecessors, (1223), 1222 states have call successors, (1223) [2021-11-12 22:53:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 6191 transitions. [2021-11-12 22:53:49,430 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 6191 transitions. Word has length 263 [2021-11-12 22:53:49,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:49,432 INFO L470 AbstractCegarLoop]: Abstraction has 4487 states and 6191 transitions. [2021-11-12 22:53:49,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-12 22:53:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 6191 transitions. [2021-11-12 22:53:49,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1607 [2021-11-12 22:53:49,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:49,547 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 43, 43, 28, 28, 27, 27, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:49,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:49,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:49,763 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:49,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:49,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1624747529, now seen corresponding path program 1 times [2021-11-12 22:53:49,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:49,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975098128] [2021-11-12 22:53:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:49,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:49,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:49,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:49,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:53:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:56,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 5830 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:53:56,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:54:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 13172 backedges. 731 proven. 0 refuted. 0 times theorem prover too weak. 12441 trivial. 0 not checked. [2021-11-12 22:54:05,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:54:09,901 INFO L134 CoverageAnalysis]: Checked inductivity of 13172 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13167 trivial. 0 not checked. [2021-11-12 22:54:09,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:54:09,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975098128] [2021-11-12 22:54:09,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975098128] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:54:09,906 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:54:09,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:54:09,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675379547] [2021-11-12 22:54:09,908 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:54:09,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:54:09,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:54:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:54:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:54:09,917 INFO L87 Difference]: Start difference. First operand 4487 states and 6191 transitions. Second operand has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 4 states have call successors, (285), 3 states have call predecessors, (285), 3 states have return successors, (284), 4 states have call predecessors, (284), 4 states have call successors, (284) [2021-11-12 22:54:12,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:54:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:54:24,691 INFO L93 Difference]: Finished difference Result 16424 states and 22606 transitions. [2021-11-12 22:54:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:54:24,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 4 states have call successors, (285), 3 states have call predecessors, (285), 3 states have return successors, (284), 4 states have call predecessors, (284), 4 states have call successors, (284) Word has length 1606 [2021-11-12 22:54:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:54:24,809 INFO L225 Difference]: With dead ends: 16424 [2021-11-12 22:54:24,809 INFO L226 Difference]: Without dead ends: 11978 [2021-11-12 22:54:24,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3210 GetRequests, 3208 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:54:24,844 INFO L933 BasicCegarLoop]: 5638 mSDtfsCounter, 7557 mSDsluCounter, 5424 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 1066 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12992.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7557 SdHoareTripleChecker+Valid, 11062 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.32ms SdHoareTripleChecker+Time, 1066 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14099.51ms IncrementalHoareTripleChecker+Time [2021-11-12 22:54:24,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7557 Valid, 11062 Invalid, 2419 Unknown, 0 Unchecked, 56.32ms Time], IncrementalHoareTripleChecker [1066 Valid, 1352 Invalid, 1 Unknown, 0 Unchecked, 14099.51ms Time] [2021-11-12 22:54:24,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11978 states. [2021-11-12 22:54:25,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11978 to 11970. [2021-11-12 22:54:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11970 states, 7962 states have (on average 1.2558402411454408) internal successors, (9999), 8191 states have internal predecessors, (9999), 3216 states have call successors, (3216), 794 states have call predecessors, (3216), 791 states have return successors, (3219), 3122 states have call predecessors, (3219), 3216 states have call successors, (3219) [2021-11-12 22:54:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11970 states to 11970 states and 16434 transitions. [2021-11-12 22:54:25,694 INFO L78 Accepts]: Start accepts. Automaton has 11970 states and 16434 transitions. Word has length 1606 [2021-11-12 22:54:25,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:54:25,699 INFO L470 AbstractCegarLoop]: Abstraction has 11970 states and 16434 transitions. [2021-11-12 22:54:25,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 4 states have call successors, (285), 3 states have call predecessors, (285), 3 states have return successors, (284), 4 states have call predecessors, (284), 4 states have call successors, (284) [2021-11-12 22:54:25,700 INFO L276 IsEmpty]: Start isEmpty. Operand 11970 states and 16434 transitions. [2021-11-12 22:54:25,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2021-11-12 22:54:25,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:54:25,894 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 43, 43, 32, 32, 28, 28, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 15, 15, 15, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:54:26,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:54:26,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:54:26,113 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:54:26,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:54:26,114 INFO L85 PathProgramCache]: Analyzing trace with hash -591761178, now seen corresponding path program 1 times [2021-11-12 22:54:26,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:54:26,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729654229] [2021-11-12 22:54:26,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:54:26,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:54:26,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:54:26,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:54:26,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:54:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:54:32,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 6000 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:54:32,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:54:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 13835 backedges. 1211 proven. 0 refuted. 0 times theorem prover too weak. 12624 trivial. 0 not checked. [2021-11-12 22:54:41,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:54:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13835 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13813 trivial. 0 not checked. [2021-11-12 22:54:46,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:54:46,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729654229] [2021-11-12 22:54:46,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729654229] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:54:46,436 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:54:46,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:54:46,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179051452] [2021-11-12 22:54:46,437 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:54:46,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:54:46,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:54:46,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:54:46,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:54:46,442 INFO L87 Difference]: Start difference. First operand 11970 states and 16434 transitions. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 4 states have call successors, (297), 3 states have call predecessors, (297), 3 states have return successors, (296), 4 states have call predecessors, (296), 4 states have call successors, (296) [2021-11-12 22:54:48,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:55:00,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:00,350 INFO L93 Difference]: Finished difference Result 32840 states and 45032 transitions. [2021-11-12 22:55:00,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:55:00,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 4 states have call successors, (297), 3 states have call predecessors, (297), 3 states have return successors, (296), 4 states have call predecessors, (296), 4 states have call successors, (296) Word has length 1688 [2021-11-12 22:55:00,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:00,517 INFO L225 Difference]: With dead ends: 32840 [2021-11-12 22:55:00,517 INFO L226 Difference]: Without dead ends: 20922 [2021-11-12 22:55:00,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3374 GetRequests, 3372 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:55:00,590 INFO L933 BasicCegarLoop]: 7271 mSDtfsCounter, 6663 mSDsluCounter, 5258 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 619 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12160.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6663 SdHoareTripleChecker+Valid, 12529 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.18ms SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13174.56ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:00,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6663 Valid, 12529 Invalid, 2114 Unknown, 0 Unchecked, 53.18ms Time], IncrementalHoareTripleChecker [619 Valid, 1494 Invalid, 1 Unknown, 0 Unchecked, 13174.56ms Time] [2021-11-12 22:55:00,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20922 states. [2021-11-12 22:55:01,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20922 to 20914. [2021-11-12 22:55:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20914 states, 13877 states have (on average 1.2526482669164805) internal successors, (17383), 14283 states have internal predecessors, (17383), 5623 states have call successors, (5623), 1418 states have call predecessors, (5623), 1413 states have return successors, (5628), 5455 states have call predecessors, (5628), 5623 states have call successors, (5628) [2021-11-12 22:55:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20914 states to 20914 states and 28634 transitions. [2021-11-12 22:55:01,911 INFO L78 Accepts]: Start accepts. Automaton has 20914 states and 28634 transitions. Word has length 1688 [2021-11-12 22:55:01,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:01,915 INFO L470 AbstractCegarLoop]: Abstraction has 20914 states and 28634 transitions. [2021-11-12 22:55:01,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 4 states have call successors, (297), 3 states have call predecessors, (297), 3 states have return successors, (296), 4 states have call predecessors, (296), 4 states have call successors, (296) [2021-11-12 22:55:01,916 INFO L276 IsEmpty]: Start isEmpty. Operand 20914 states and 28634 transitions. [2021-11-12 22:55:02,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1745 [2021-11-12 22:55:02,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:02,036 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 43, 43, 32, 32, 28, 28, 20, 20, 20, 20, 20, 20, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:02,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:55:02,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:55:02,257 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:55:02,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:02,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1161150069, now seen corresponding path program 1 times [2021-11-12 22:55:02,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:55:02,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861921840] [2021-11-12 22:55:02,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:02,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:55:02,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:55:02,267 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:55:02,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:55:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:08,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 6108 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:55:09,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:55:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 14129 backedges. 1177 proven. 0 refuted. 0 times theorem prover too weak. 12952 trivial. 0 not checked. [2021-11-12 22:55:17,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:55:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14129 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14115 trivial. 0 not checked. [2021-11-12 22:55:22,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:55:22,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861921840] [2021-11-12 22:55:22,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861921840] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:22,240 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:22,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:55:22,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820456520] [2021-11-12 22:55:22,242 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:22,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:55:22,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:55:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:55:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:55:22,247 INFO L87 Difference]: Start difference. First operand 20914 states and 28634 transitions. Second operand has 6 states, 6 states have (on average 100.83333333333333) internal successors, (605), 6 states have internal predecessors, (605), 2 states have call successors, (293), 2 states have call predecessors, (293), 2 states have return successors, (292), 2 states have call predecessors, (292), 2 states have call successors, (292) [2021-11-12 22:55:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:26,657 INFO L93 Difference]: Finished difference Result 60684 states and 85281 transitions. [2021-11-12 22:55:26,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:55:26,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 100.83333333333333) internal successors, (605), 6 states have internal predecessors, (605), 2 states have call successors, (293), 2 states have call predecessors, (293), 2 states have return successors, (292), 2 states have call predecessors, (292), 2 states have call successors, (292) Word has length 1744 [2021-11-12 22:55:26,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:27,116 INFO L225 Difference]: With dead ends: 60684 [2021-11-12 22:55:27,116 INFO L226 Difference]: Without dead ends: 39822 [2021-11-12 22:55:27,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3488 GetRequests, 3483 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:55:27,207 INFO L933 BasicCegarLoop]: 6576 mSDtfsCounter, 3613 mSDsluCounter, 16551 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2491.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4064 SdHoareTripleChecker+Valid, 23127 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.75ms SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2787.33ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:27,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4064 Valid, 23127 Invalid, 927 Unknown, 0 Unchecked, 59.75ms Time], IncrementalHoareTripleChecker [679 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 2787.33ms Time] [2021-11-12 22:55:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39822 states. [2021-11-12 22:55:28,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39822 to 20918. [2021-11-12 22:55:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20918 states, 13881 states have (on average 1.2525754628629062) internal successors, (17387), 14287 states have internal predecessors, (17387), 5623 states have call successors, (5623), 1418 states have call predecessors, (5623), 1413 states have return successors, (5628), 5455 states have call predecessors, (5628), 5623 states have call successors, (5628) [2021-11-12 22:55:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20918 states to 20918 states and 28638 transitions. [2021-11-12 22:55:29,053 INFO L78 Accepts]: Start accepts. Automaton has 20918 states and 28638 transitions. Word has length 1744 [2021-11-12 22:55:29,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:29,054 INFO L470 AbstractCegarLoop]: Abstraction has 20918 states and 28638 transitions. [2021-11-12 22:55:29,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.83333333333333) internal successors, (605), 6 states have internal predecessors, (605), 2 states have call successors, (293), 2 states have call predecessors, (293), 2 states have return successors, (292), 2 states have call predecessors, (292), 2 states have call successors, (292) [2021-11-12 22:55:29,055 INFO L276 IsEmpty]: Start isEmpty. Operand 20918 states and 28638 transitions. [2021-11-12 22:55:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1751 [2021-11-12 22:55:29,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:29,142 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 43, 43, 32, 32, 28, 28, 20, 20, 20, 20, 20, 20, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:29,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:55:29,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:55:29,356 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:55:29,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:29,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1141678797, now seen corresponding path program 1 times [2021-11-12 22:55:29,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:55:29,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241170560] [2021-11-12 22:55:29,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:29,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:55:29,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:55:29,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:55:29,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:55:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:36,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 6139 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:55:36,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:55:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 14129 backedges. 1177 proven. 0 refuted. 0 times theorem prover too weak. 12952 trivial. 0 not checked. [2021-11-12 22:55:45,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:55:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 14129 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14115 trivial. 0 not checked. [2021-11-12 22:55:50,462 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:55:50,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241170560] [2021-11-12 22:55:50,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241170560] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:50,462 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:50,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 22:55:50,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487983089] [2021-11-12 22:55:50,464 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:50,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:55:50,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:55:50,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:55:50,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:55:50,470 INFO L87 Difference]: Start difference. First operand 20918 states and 28638 transitions. Second operand has 10 states, 10 states have (on average 61.1) internal successors, (611), 8 states have internal predecessors, (611), 2 states have call successors, (294), 2 states have call predecessors, (294), 4 states have return successors, (294), 4 states have call predecessors, (294), 2 states have call successors, (294) [2021-11-12 22:55:54,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:54,361 INFO L93 Difference]: Finished difference Result 55156 states and 77114 transitions. [2021-11-12 22:55:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:55:54,362 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 61.1) internal successors, (611), 8 states have internal predecessors, (611), 2 states have call successors, (294), 2 states have call predecessors, (294), 4 states have return successors, (294), 4 states have call predecessors, (294), 2 states have call successors, (294) Word has length 1750 [2021-11-12 22:55:54,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:54,512 INFO L225 Difference]: With dead ends: 55156 [2021-11-12 22:55:54,513 INFO L226 Difference]: Without dead ends: 34290 [2021-11-12 22:55:54,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3499 GetRequests, 3490 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:55:54,594 INFO L933 BasicCegarLoop]: 5575 mSDtfsCounter, 2143 mSDsluCounter, 25309 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2167.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2723 SdHoareTripleChecker+Valid, 30884 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.96ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2339.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:54,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2723 Valid, 30884 Invalid, 319 Unknown, 0 Unchecked, 44.96ms Time], IncrementalHoareTripleChecker [1 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 2339.06ms Time] [2021-11-12 22:55:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34290 states. [2021-11-12 22:55:56,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34290 to 20928. [2021-11-12 22:55:56,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20928 states, 13889 states have (on average 1.2524299805601555) internal successors, (17395), 14295 states have internal predecessors, (17395), 5623 states have call successors, (5623), 1418 states have call predecessors, (5623), 1415 states have return successors, (5634), 5457 states have call predecessors, (5634), 5623 states have call successors, (5634) [2021-11-12 22:55:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20928 states to 20928 states and 28652 transitions. [2021-11-12 22:55:56,568 INFO L78 Accepts]: Start accepts. Automaton has 20928 states and 28652 transitions. Word has length 1750 [2021-11-12 22:55:56,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:56,570 INFO L470 AbstractCegarLoop]: Abstraction has 20928 states and 28652 transitions. [2021-11-12 22:55:56,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.1) internal successors, (611), 8 states have internal predecessors, (611), 2 states have call successors, (294), 2 states have call predecessors, (294), 4 states have return successors, (294), 4 states have call predecessors, (294), 2 states have call successors, (294) [2021-11-12 22:55:56,570 INFO L276 IsEmpty]: Start isEmpty. Operand 20928 states and 28652 transitions. [2021-11-12 22:55:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1751 [2021-11-12 22:55:56,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:56,665 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 43, 43, 32, 32, 28, 28, 20, 20, 20, 20, 20, 20, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:56,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:55:56,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:55:56,890 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:55:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:56,891 INFO L85 PathProgramCache]: Analyzing trace with hash -849561845, now seen corresponding path program 1 times [2021-11-12 22:55:56,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:55:56,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112566794] [2021-11-12 22:55:56,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:56,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:55:56,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:55:56,900 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:55:56,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:56:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:03,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 6142 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:56:03,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:56:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14129 backedges. 967 proven. 0 refuted. 0 times theorem prover too weak. 13162 trivial. 0 not checked. [2021-11-12 22:56:12,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:56:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14129 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14115 trivial. 0 not checked. [2021-11-12 22:56:16,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:56:16,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112566794] [2021-11-12 22:56:16,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112566794] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:16,875 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:16,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 22:56:16,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759146209] [2021-11-12 22:56:16,876 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:16,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:56:16,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:56:16,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:56:16,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:56:16,881 INFO L87 Difference]: Start difference. First operand 20928 states and 28652 transitions. Second operand has 8 states, 8 states have (on average 76.25) internal successors, (610), 8 states have internal predecessors, (610), 2 states have call successors, (292), 2 states have call predecessors, (292), 2 states have return successors, (291), 2 states have call predecessors, (291), 2 states have call successors, (291) [2021-11-12 22:56:19,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:56:21,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:56:26,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:26,726 INFO L93 Difference]: Finished difference Result 60790 states and 85443 transitions. [2021-11-12 22:56:26,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:56:26,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 76.25) internal successors, (610), 8 states have internal predecessors, (610), 2 states have call successors, (292), 2 states have call predecessors, (292), 2 states have return successors, (291), 2 states have call predecessors, (291), 2 states have call successors, (291) Word has length 1750 [2021-11-12 22:56:26,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:26,914 INFO L225 Difference]: With dead ends: 60790 [2021-11-12 22:56:26,914 INFO L226 Difference]: Without dead ends: 39914 [2021-11-12 22:56:26,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3502 GetRequests, 3494 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:56:27,000 INFO L933 BasicCegarLoop]: 5503 mSDtfsCounter, 6392 mSDsluCounter, 25963 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1373 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7040.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6620 SdHoareTripleChecker+Valid, 31466 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.54ms SdHoareTripleChecker+Time, 1373 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7520.93ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:27,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6620 Valid, 31466 Invalid, 1634 Unknown, 0 Unchecked, 45.54ms Time], IncrementalHoareTripleChecker [1373 Valid, 259 Invalid, 2 Unknown, 0 Unchecked, 7520.93ms Time] [2021-11-12 22:56:27,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39914 states. [2021-11-12 22:56:28,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39914 to 20934. [2021-11-12 22:56:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20934 states, 13895 states have (on average 1.2523209787693415) internal successors, (17401), 14301 states have internal predecessors, (17401), 5623 states have call successors, (5623), 1418 states have call predecessors, (5623), 1415 states have return successors, (5634), 5457 states have call predecessors, (5634), 5623 states have call successors, (5634) [2021-11-12 22:56:28,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20934 states to 20934 states and 28658 transitions. [2021-11-12 22:56:28,834 INFO L78 Accepts]: Start accepts. Automaton has 20934 states and 28658 transitions. Word has length 1750 [2021-11-12 22:56:28,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:28,835 INFO L470 AbstractCegarLoop]: Abstraction has 20934 states and 28658 transitions. [2021-11-12 22:56:28,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.25) internal successors, (610), 8 states have internal predecessors, (610), 2 states have call successors, (292), 2 states have call predecessors, (292), 2 states have return successors, (291), 2 states have call predecessors, (291), 2 states have call successors, (291) [2021-11-12 22:56:28,836 INFO L276 IsEmpty]: Start isEmpty. Operand 20934 states and 28658 transitions. [2021-11-12 22:56:28,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1772 [2021-11-12 22:56:28,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:28,915 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 43, 43, 32, 32, 28, 28, 21, 21, 21, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:29,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:56:29,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:56:29,130 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:56:29,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:29,131 INFO L85 PathProgramCache]: Analyzing trace with hash 713989868, now seen corresponding path program 1 times [2021-11-12 22:56:29,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:56:29,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527563683] [2021-11-12 22:56:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:29,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:56:29,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:56:29,139 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:56:29,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:56:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:36,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 6189 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-12 22:56:36,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:56:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14310 backedges. 910 proven. 0 refuted. 0 times theorem prover too weak. 13400 trivial. 0 not checked. [2021-11-12 22:56:45,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:56:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 14310 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 14258 trivial. 0 not checked. [2021-11-12 22:56:50,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:56:50,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527563683] [2021-11-12 22:56:50,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527563683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:50,982 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:50,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 7] imperfect sequences [] total 17 [2021-11-12 22:56:50,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439973203] [2021-11-12 22:56:50,983 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:50,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-12 22:56:50,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:56:50,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-12 22:56:50,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:56:50,987 INFO L87 Difference]: Start difference. First operand 20934 states and 28658 transitions. Second operand has 17 states, 17 states have (on average 35.76470588235294) internal successors, (608), 14 states have internal predecessors, (608), 3 states have call successors, (288), 2 states have call predecessors, (288), 5 states have return successors, (289), 6 states have call predecessors, (289), 3 states have call successors, (289) [2021-11-12 22:56:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:56,567 INFO L93 Difference]: Finished difference Result 50395 states and 69981 transitions. [2021-11-12 22:56:56,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:56:56,568 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 35.76470588235294) internal successors, (608), 14 states have internal predecessors, (608), 3 states have call successors, (288), 2 states have call predecessors, (288), 5 states have return successors, (289), 6 states have call predecessors, (289), 3 states have call successors, (289) Word has length 1771 [2021-11-12 22:56:56,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:56,709 INFO L225 Difference]: With dead ends: 50395 [2021-11-12 22:56:56,710 INFO L226 Difference]: Without dead ends: 29513 [2021-11-12 22:56:56,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3552 GetRequests, 3528 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-11-12 22:56:56,791 INFO L933 BasicCegarLoop]: 5746 mSDtfsCounter, 6003 mSDsluCounter, 55695 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2094.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6005 SdHoareTripleChecker+Valid, 61441 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.28ms SdHoareTripleChecker+Time, 2029 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2482.28ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:56,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6005 Valid, 61441 Invalid, 2154 Unknown, 0 Unchecked, 69.28ms Time], IncrementalHoareTripleChecker [2029 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 2482.28ms Time] [2021-11-12 22:56:56,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29513 states. [2021-11-12 22:56:58,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29513 to 20946. [2021-11-12 22:56:58,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20946 states, 13905 states have (on average 1.2521395181589356) internal successors, (17411), 14311 states have internal predecessors, (17411), 5623 states have call successors, (5623), 1418 states have call predecessors, (5623), 1417 states have return successors, (5638), 5459 states have call predecessors, (5638), 5623 states have call successors, (5638) [2021-11-12 22:56:58,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20946 states to 20946 states and 28672 transitions. [2021-11-12 22:56:58,396 INFO L78 Accepts]: Start accepts. Automaton has 20946 states and 28672 transitions. Word has length 1771 [2021-11-12 22:56:58,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:58,397 INFO L470 AbstractCegarLoop]: Abstraction has 20946 states and 28672 transitions. [2021-11-12 22:56:58,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 35.76470588235294) internal successors, (608), 14 states have internal predecessors, (608), 3 states have call successors, (288), 2 states have call predecessors, (288), 5 states have return successors, (289), 6 states have call predecessors, (289), 3 states have call successors, (289) [2021-11-12 22:56:58,398 INFO L276 IsEmpty]: Start isEmpty. Operand 20946 states and 28672 transitions. [2021-11-12 22:56:58,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1788 [2021-11-12 22:56:58,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:58,475 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 43, 43, 32, 32, 28, 28, 23, 23, 23, 20, 20, 20, 20, 20, 19, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:58,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:56:58,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:56:58,698 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:56:58,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:58,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2073957198, now seen corresponding path program 1 times [2021-11-12 22:56:58,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:56:58,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055078744] [2021-11-12 22:56:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:58,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:56:58,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:56:58,706 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:56:58,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:57:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:05,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 6221 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:57:05,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 14494 backedges. 922 proven. 0 refuted. 0 times theorem prover too weak. 13572 trivial. 0 not checked. [2021-11-12 22:57:18,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 14494 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14480 trivial. 0 not checked. [2021-11-12 22:57:24,819 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:24,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055078744] [2021-11-12 22:57:24,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055078744] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:24,820 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:24,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-12 22:57:24,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633595489] [2021-11-12 22:57:24,821 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:24,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:57:24,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:24,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:57:24,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:57:24,824 INFO L87 Difference]: Start difference. First operand 20946 states and 28672 transitions. Second operand has 4 states, 4 states have (on average 187.25) internal successors, (749), 4 states have internal predecessors, (749), 4 states have call successors, (338), 3 states have call predecessors, (338), 3 states have return successors, (337), 4 states have call predecessors, (337), 4 states have call successors, (337) [2021-11-12 22:57:26,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:26,189 INFO L93 Difference]: Finished difference Result 41832 states and 57256 transitions. [2021-11-12 22:57:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:57:26,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 187.25) internal successors, (749), 4 states have internal predecessors, (749), 4 states have call successors, (338), 3 states have call predecessors, (338), 3 states have return successors, (337), 4 states have call predecessors, (337), 4 states have call successors, (337) Word has length 1787 [2021-11-12 22:57:26,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:26,300 INFO L225 Difference]: With dead ends: 41832 [2021-11-12 22:57:26,301 INFO L226 Difference]: Without dead ends: 20938 [2021-11-12 22:57:26,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3572 GetRequests, 3570 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:57:26,390 INFO L933 BasicCegarLoop]: 3637 mSDtfsCounter, 3426 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3426 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.98ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.45ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:26,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3426 Valid, 3637 Invalid, 63 Unknown, 0 Unchecked, 5.98ms Time], IncrementalHoareTripleChecker [62 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 68.45ms Time] [2021-11-12 22:57:26,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20938 states. [2021-11-12 22:57:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20938 to 20938. [2021-11-12 22:57:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20938 states, 13901 states have (on average 1.2519243219912237) internal successors, (17403), 14303 states have internal predecessors, (17403), 5619 states have call successors, (5619), 1418 states have call predecessors, (5619), 1417 states have return successors, (5634), 5457 states have call predecessors, (5634), 5619 states have call successors, (5634) [2021-11-12 22:57:27,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20938 states to 20938 states and 28656 transitions. [2021-11-12 22:57:27,838 INFO L78 Accepts]: Start accepts. Automaton has 20938 states and 28656 transitions. Word has length 1787 [2021-11-12 22:57:27,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:27,839 INFO L470 AbstractCegarLoop]: Abstraction has 20938 states and 28656 transitions. [2021-11-12 22:57:27,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.25) internal successors, (749), 4 states have internal predecessors, (749), 4 states have call successors, (338), 3 states have call predecessors, (338), 3 states have return successors, (337), 4 states have call predecessors, (337), 4 states have call successors, (337) [2021-11-12 22:57:27,840 INFO L276 IsEmpty]: Start isEmpty. Operand 20938 states and 28656 transitions. [2021-11-12 22:57:27,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1820 [2021-11-12 22:57:27,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:27,898 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 45, 45, 32, 32, 29, 29, 23, 23, 23, 20, 20, 20, 20, 20, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:28,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-12 22:57:28,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:28,099 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:57:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:28,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1812189645, now seen corresponding path program 1 times [2021-11-12 22:57:28,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:28,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097346063] [2021-11-12 22:57:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:28,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:28,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:28,106 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:28,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:57:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:36,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 6313 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:57:36,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 15368 backedges. 3223 proven. 0 refuted. 0 times theorem prover too weak. 12145 trivial. 0 not checked. [2021-11-12 22:57:43,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 15368 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 15350 trivial. 0 not checked. [2021-11-12 22:57:47,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:47,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097346063] [2021-11-12 22:57:47,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097346063] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:57:47,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:57:47,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-11-12 22:57:47,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684670425] [2021-11-12 22:57:47,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:47,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:57:47,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:47,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:57:47,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:57:47,931 INFO L87 Difference]: Start difference. First operand 20938 states and 28656 transitions. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 2 states have call successors, (182), 2 states have call predecessors, (182), 2 states have return successors, (181), 2 states have call predecessors, (181), 2 states have call successors, (181) [2021-11-12 22:57:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:49,114 INFO L93 Difference]: Finished difference Result 41912 states and 58297 transitions. [2021-11-12 22:57:49,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:57:49,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 2 states have call successors, (182), 2 states have call predecessors, (182), 2 states have return successors, (181), 2 states have call predecessors, (181), 2 states have call successors, (181) Word has length 1819 [2021-11-12 22:57:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:49,211 INFO L225 Difference]: With dead ends: 41912 [2021-11-12 22:57:49,211 INFO L226 Difference]: Without dead ends: 21026 [2021-11-12 22:57:49,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3636 GetRequests, 3634 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:57:49,270 INFO L933 BasicCegarLoop]: 3637 mSDtfsCounter, 5 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7268 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.59ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.84ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:49,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 7268 Invalid, 10 Unknown, 0 Unchecked, 7.59ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 54.84ms Time] [2021-11-12 22:57:49,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21026 states. [2021-11-12 22:57:50,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21026 to 21004. [2021-11-12 22:57:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21004 states, 13945 states have (on average 1.2519182502689137) internal successors, (17458), 14347 states have internal predecessors, (17458), 5641 states have call successors, (5641), 1418 states have call predecessors, (5641), 1417 states have return successors, (5656), 5479 states have call predecessors, (5656), 5641 states have call successors, (5656) [2021-11-12 22:57:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21004 states to 21004 states and 28755 transitions. [2021-11-12 22:57:50,873 INFO L78 Accepts]: Start accepts. Automaton has 21004 states and 28755 transitions. Word has length 1819 [2021-11-12 22:57:50,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:50,874 INFO L470 AbstractCegarLoop]: Abstraction has 21004 states and 28755 transitions. [2021-11-12 22:57:50,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 2 states have call successors, (182), 2 states have call predecessors, (182), 2 states have return successors, (181), 2 states have call predecessors, (181), 2 states have call successors, (181) [2021-11-12 22:57:50,875 INFO L276 IsEmpty]: Start isEmpty. Operand 21004 states and 28755 transitions. [2021-11-12 22:57:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1850 [2021-11-12 22:57:50,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:50,925 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 47, 47, 32, 32, 29, 29, 23, 23, 23, 20, 20, 20, 20, 20, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:51,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-12 22:57:51,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:51,130 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:57:51,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:51,130 INFO L85 PathProgramCache]: Analyzing trace with hash 559618179, now seen corresponding path program 1 times [2021-11-12 22:57:51,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:51,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469800768] [2021-11-12 22:57:51,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:51,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:51,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:51,136 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:51,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:57:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:59,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 6375 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:57:59,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:58:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 15733 backedges. 3964 proven. 0 refuted. 0 times theorem prover too weak. 11769 trivial. 0 not checked. [2021-11-12 22:58:06,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 15733 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 15719 trivial. 0 not checked. [2021-11-12 22:58:10,773 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:10,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469800768] [2021-11-12 22:58:10,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469800768] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:10,774 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:10,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:58:10,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021399149] [2021-11-12 22:58:10,775 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:10,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:58:10,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:10,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:58:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:58:10,777 INFO L87 Difference]: Start difference. First operand 21004 states and 28755 transitions. Second operand has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 2 states have call successors, (271), 2 states have call predecessors, (271), 2 states have return successors, (270), 2 states have call predecessors, (270), 2 states have call successors, (270) [2021-11-12 22:58:11,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:11,979 INFO L93 Difference]: Finished difference Result 42242 states and 58857 transitions. [2021-11-12 22:58:11,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:58:11,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 2 states have call successors, (271), 2 states have call predecessors, (271), 2 states have return successors, (270), 2 states have call predecessors, (270), 2 states have call successors, (270) Word has length 1849 [2021-11-12 22:58:11,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:12,063 INFO L225 Difference]: With dead ends: 42242 [2021-11-12 22:58:12,063 INFO L226 Difference]: Without dead ends: 21290 [2021-11-12 22:58:12,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3696 GetRequests, 3694 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:58:12,136 INFO L933 BasicCegarLoop]: 3649 mSDtfsCounter, 27 mSDsluCounter, 3637 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 7286 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.58ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.62ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:12,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 7286 Invalid, 25 Unknown, 0 Unchecked, 6.58ms Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 90.62ms Time] [2021-11-12 22:58:12,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21290 states. [2021-11-12 22:58:13,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21290 to 21081. [2021-11-12 22:58:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21081 states, 14000 states have (on average 1.2517142857142858) internal successors, (17524), 14402 states have internal predecessors, (17524), 5663 states have call successors, (5663), 1418 states have call predecessors, (5663), 1417 states have return successors, (5678), 5501 states have call predecessors, (5678), 5663 states have call successors, (5678) [2021-11-12 22:58:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21081 states to 21081 states and 28865 transitions. [2021-11-12 22:58:13,719 INFO L78 Accepts]: Start accepts. Automaton has 21081 states and 28865 transitions. Word has length 1849 [2021-11-12 22:58:13,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:13,720 INFO L470 AbstractCegarLoop]: Abstraction has 21081 states and 28865 transitions. [2021-11-12 22:58:13,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 2 states have call successors, (271), 2 states have call predecessors, (271), 2 states have return successors, (270), 2 states have call predecessors, (270), 2 states have call successors, (270) [2021-11-12 22:58:13,721 INFO L276 IsEmpty]: Start isEmpty. Operand 21081 states and 28865 transitions. [2021-11-12 22:58:13,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1866 [2021-11-12 22:58:13,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:13,802 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 48, 48, 32, 32, 29, 29, 23, 23, 23, 20, 20, 20, 20, 20, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:13,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:58:14,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:58:14,006 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:58:14,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:14,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2075765830, now seen corresponding path program 1 times [2021-11-12 22:58:14,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:58:14,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895888542] [2021-11-12 22:58:14,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:14,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:58:14,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:58:14,013 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:58:14,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:58:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:26,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 6410 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:58:26,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:58:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 15930 backedges. 2807 proven. 0 refuted. 0 times theorem prover too weak. 13123 trivial. 0 not checked. [2021-11-12 22:58:30,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 15930 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 15916 trivial. 0 not checked. [2021-11-12 22:58:34,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:34,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895888542] [2021-11-12 22:58:34,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895888542] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:34,784 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:34,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:58:34,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116661774] [2021-11-12 22:58:34,785 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:34,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:58:34,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:34,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:58:34,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:58:34,788 INFO L87 Difference]: Start difference. First operand 21081 states and 28865 transitions. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 2 states have call successors, (228), 2 states have call predecessors, (228), 2 states have return successors, (227), 2 states have call predecessors, (227), 2 states have call successors, (227) [2021-11-12 22:58:37,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:58:39,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:58:40,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:40,196 INFO L93 Difference]: Finished difference Result 42242 states and 58181 transitions. [2021-11-12 22:58:40,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:58:40,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 2 states have call successors, (228), 2 states have call predecessors, (228), 2 states have return successors, (227), 2 states have call predecessors, (227), 2 states have call successors, (227) Word has length 1865 [2021-11-12 22:58:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:40,283 INFO L225 Difference]: With dead ends: 42242 [2021-11-12 22:58:40,283 INFO L226 Difference]: Without dead ends: 21213 [2021-11-12 22:58:40,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3728 GetRequests, 3726 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:58:40,352 INFO L933 BasicCegarLoop]: 3639 mSDtfsCounter, 14 mSDsluCounter, 7251 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4088.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 10890 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.80ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4129.39ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:40,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 10890 Invalid, 17 Unknown, 0 Unchecked, 8.80ms Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 2 Unknown, 0 Unchecked, 4129.39ms Time] [2021-11-12 22:58:40,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21213 states. [2021-11-12 22:58:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21213 to 21213. [2021-11-12 22:58:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21213 states, 14088 states have (on average 1.2509227711527542) internal successors, (17623), 14490 states have internal predecessors, (17623), 5707 states have call successors, (5707), 1418 states have call predecessors, (5707), 1417 states have return successors, (5722), 5545 states have call predecessors, (5722), 5707 states have call successors, (5722) [2021-11-12 22:58:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21213 states to 21213 states and 29052 transitions. [2021-11-12 22:58:41,744 INFO L78 Accepts]: Start accepts. Automaton has 21213 states and 29052 transitions. Word has length 1865 [2021-11-12 22:58:41,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:41,746 INFO L470 AbstractCegarLoop]: Abstraction has 21213 states and 29052 transitions. [2021-11-12 22:58:41,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 2 states have call successors, (228), 2 states have call predecessors, (228), 2 states have return successors, (227), 2 states have call predecessors, (227), 2 states have call successors, (227) [2021-11-12 22:58:41,746 INFO L276 IsEmpty]: Start isEmpty. Operand 21213 states and 29052 transitions. [2021-11-12 22:58:41,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1968 [2021-11-12 22:58:41,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:41,797 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 52, 52, 33, 33, 32, 32, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 20, 20, 20, 20, 20, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:41,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:58:41,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:58:41,998 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:58:41,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:41,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1663162330, now seen corresponding path program 1 times [2021-11-12 22:58:42,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:58:42,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647616705] [2021-11-12 22:58:42,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:42,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:58:42,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:58:42,005 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:58:42,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:58:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:54,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 6714 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:58:54,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:58:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 19155 backedges. 4444 proven. 0 refuted. 0 times theorem prover too weak. 14711 trivial. 0 not checked. [2021-11-12 22:58:59,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 19155 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 19134 trivial. 0 not checked. [2021-11-12 22:59:03,582 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:59:03,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647616705] [2021-11-12 22:59:03,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647616705] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:03,582 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:03,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:59:03,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56203246] [2021-11-12 22:59:03,584 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:03,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:59:03,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:03,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:59:03,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:59:03,586 INFO L87 Difference]: Start difference. First operand 21213 states and 29052 transitions. Second operand has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 2 states have call successors, (234), 2 states have call predecessors, (234), 2 states have return successors, (233), 2 states have call predecessors, (233), 2 states have call successors, (233) [2021-11-12 22:59:04,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:04,889 INFO L93 Difference]: Finished difference Result 42506 states and 58566 transitions. [2021-11-12 22:59:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:59:04,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 2 states have call successors, (234), 2 states have call predecessors, (234), 2 states have return successors, (233), 2 states have call predecessors, (233), 2 states have call successors, (233) Word has length 1967 [2021-11-12 22:59:04,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:04,977 INFO L225 Difference]: With dead ends: 42506 [2021-11-12 22:59:04,977 INFO L226 Difference]: Without dead ends: 21345 [2021-11-12 22:59:05,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3932 GetRequests, 3930 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:59:05,050 INFO L933 BasicCegarLoop]: 3637 mSDtfsCounter, 4 mSDsluCounter, 7260 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10897 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.35ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.71ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:05,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 10897 Invalid, 15 Unknown, 0 Unchecked, 8.35ms Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 93.71ms Time] [2021-11-12 22:59:05,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21345 states. [2021-11-12 22:59:06,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21345 to 21345. [2021-11-12 22:59:06,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21345 states, 14176 states have (on average 1.2493651241534989) internal successors, (17711), 14578 states have internal predecessors, (17711), 5751 states have call successors, (5751), 1418 states have call predecessors, (5751), 1417 states have return successors, (5766), 5589 states have call predecessors, (5766), 5751 states have call successors, (5766) [2021-11-12 22:59:06,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21345 states to 21345 states and 29228 transitions. [2021-11-12 22:59:06,479 INFO L78 Accepts]: Start accepts. Automaton has 21345 states and 29228 transitions. Word has length 1967 [2021-11-12 22:59:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:06,481 INFO L470 AbstractCegarLoop]: Abstraction has 21345 states and 29228 transitions. [2021-11-12 22:59:06,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 2 states have call successors, (234), 2 states have call predecessors, (234), 2 states have return successors, (233), 2 states have call predecessors, (233), 2 states have call successors, (233) [2021-11-12 22:59:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 21345 states and 29228 transitions. [2021-11-12 22:59:06,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2164 [2021-11-12 22:59:06,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:06,567 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 60, 60, 41, 41, 32, 32, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 23, 23, 23, 20, 20, 20, 20, 20, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:06,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:59:06,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:59:06,790 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:59:06,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:06,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1816333978, now seen corresponding path program 1 times [2021-11-12 22:59:06,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:59:06,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649514130] [2021-11-12 22:59:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:06,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:59:06,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:59:06,799 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:59:06,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:59:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:20,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 7270 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:59:20,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 26969 backedges. 8400 proven. 7 refuted. 0 times theorem prover too weak. 18562 trivial. 0 not checked. [2021-11-12 22:59:25,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 26969 backedges. 45 proven. 7 refuted. 0 times theorem prover too weak. 26917 trivial. 0 not checked. [2021-11-12 22:59:30,719 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:59:30,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649514130] [2021-11-12 22:59:30,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649514130] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:59:30,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [124818470] [2021-11-12 22:59:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:30,720 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:59:30,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:59:30,722 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:59:30,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-12 22:59:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:33,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 7270 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:59:33,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 26969 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 26655 trivial. 0 not checked. [2021-11-12 22:59:37,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:42,234 INFO L134 CoverageAnalysis]: Checked inductivity of 26969 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26955 trivial. 0 not checked. [2021-11-12 22:59:42,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [124818470] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:42,234 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 22:59:42,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-12 22:59:42,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010899539] [2021-11-12 22:59:42,237 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:42,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:59:42,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:42,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:59:42,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:59:42,240 INFO L87 Difference]: Start difference. First operand 21345 states and 29228 transitions. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 3 states have call successors, (188), 3 states have call predecessors, (188), 3 states have return successors, (187), 3 states have call predecessors, (187), 3 states have call successors, (187) [2021-11-12 22:59:44,455 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:59:46,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:46,508 INFO L93 Difference]: Finished difference Result 50921 states and 69716 transitions. [2021-11-12 22:59:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:59:46,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 3 states have call successors, (188), 3 states have call predecessors, (188), 3 states have return successors, (187), 3 states have call predecessors, (187), 3 states have call successors, (187) Word has length 2163 [2021-11-12 22:59:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:46,629 INFO L225 Difference]: With dead ends: 50921 [2021-11-12 22:59:46,629 INFO L226 Difference]: Without dead ends: 29628 [2021-11-12 22:59:46,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8648 GetRequests, 8641 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:59:46,694 INFO L933 BasicCegarLoop]: 6170 mSDtfsCounter, 2584 mSDsluCounter, 3539 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2664.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2584 SdHoareTripleChecker+Valid, 9709 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.66ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2738.75ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:46,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2584 Valid, 9709 Invalid, 105 Unknown, 0 Unchecked, 11.66ms Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 1 Unknown, 0 Unchecked, 2738.75ms Time] [2021-11-12 22:59:46,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29628 states. [2021-11-12 22:59:48,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29628 to 29622. [2021-11-12 22:59:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29622 states, 19654 states have (on average 1.2494657576065942) internal successors, (24557), 20226 states have internal predecessors, (24557), 7977 states have call successors, (7977), 1994 states have call predecessors, (7977), 1990 states have return successors, (8002), 7740 states have call predecessors, (8002), 7977 states have call successors, (8002) [2021-11-12 22:59:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29622 states to 29622 states and 40536 transitions. [2021-11-12 22:59:48,707 INFO L78 Accepts]: Start accepts. Automaton has 29622 states and 40536 transitions. Word has length 2163 [2021-11-12 22:59:48,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:48,710 INFO L470 AbstractCegarLoop]: Abstraction has 29622 states and 40536 transitions. [2021-11-12 22:59:48,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 3 states have call successors, (188), 3 states have call predecessors, (188), 3 states have return successors, (187), 3 states have call predecessors, (187), 3 states have call successors, (187) [2021-11-12 22:59:48,711 INFO L276 IsEmpty]: Start isEmpty. Operand 29622 states and 40536 transitions. [2021-11-12 22:59:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2190 [2021-11-12 22:59:48,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:48,849 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 60, 60, 41, 41, 34, 34, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 23, 23, 23, 20, 20, 20, 20, 20, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:49,049 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forcibly destroying the process [2021-11-12 22:59:49,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:59:49,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-12 22:59:49,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 22:59:49,259 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:59:49,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:49,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1749960890, now seen corresponding path program 1 times [2021-11-12 22:59:49,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:59:49,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721365075] [2021-11-12 22:59:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:49,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:59:49,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:59:49,270 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:59:49,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:00:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:03,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 7307 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:00:03,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 27187 backedges. 8575 proven. 7 refuted. 0 times theorem prover too weak. 18605 trivial. 0 not checked. [2021-11-12 23:00:09,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 27187 backedges. 58 proven. 7 refuted. 0 times theorem prover too weak. 27122 trivial. 0 not checked. [2021-11-12 23:00:14,205 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:00:14,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721365075] [2021-11-12 23:00:14,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721365075] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:00:14,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1755450236] [2021-11-12 23:00:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:14,206 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:00:14,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:00:14,207 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:00:14,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-12 23:00:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:17,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 7307 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:00:17,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 27187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27187 trivial. 0 not checked. [2021-11-12 23:00:20,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 27187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27187 trivial. 0 not checked. [2021-11-12 23:00:26,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1755450236] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:26,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:00:26,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-12 23:00:26,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353141033] [2021-11-12 23:00:26,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:26,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:00:26,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:00:26,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:00:26,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:00:26,091 INFO L87 Difference]: Start difference. First operand 29622 states and 40536 transitions. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 2 states have call successors, (181), 2 states have call predecessors, (181), 2 states have return successors, (180), 2 states have call predecessors, (180), 2 states have call successors, (180) [2021-11-12 23:00:28,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:28,434 INFO L93 Difference]: Finished difference Result 67746 states and 93712 transitions. [2021-11-12 23:00:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:00:28,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 2 states have call successors, (181), 2 states have call predecessors, (181), 2 states have return successors, (180), 2 states have call predecessors, (180), 2 states have call successors, (180) Word has length 2189 [2021-11-12 23:00:28,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:28,536 INFO L225 Difference]: With dead ends: 67746 [2021-11-12 23:00:28,536 INFO L226 Difference]: Without dead ends: 38176 [2021-11-12 23:00:28,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8752 GetRequests, 8745 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:00:28,609 INFO L933 BasicCegarLoop]: 5126 mSDtfsCounter, 1054 mSDsluCounter, 3887 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 9013 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.63ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:28,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1334 Valid, 9013 Invalid, 7 Unknown, 0 Unchecked, 9.63ms Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 29.77ms Time] [2021-11-12 23:00:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38176 states. [2021-11-12 23:00:30,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38176 to 29627. [2021-11-12 23:00:30,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29627 states, 19659 states have (on average 1.249402309374841) internal successors, (24562), 20231 states have internal predecessors, (24562), 7977 states have call successors, (7977), 1994 states have call predecessors, (7977), 1990 states have return successors, (8002), 7740 states have call predecessors, (8002), 7977 states have call successors, (8002) [2021-11-12 23:00:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29627 states to 29627 states and 40541 transitions. [2021-11-12 23:00:30,774 INFO L78 Accepts]: Start accepts. Automaton has 29627 states and 40541 transitions. Word has length 2189 [2021-11-12 23:00:30,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:30,778 INFO L470 AbstractCegarLoop]: Abstraction has 29627 states and 40541 transitions. [2021-11-12 23:00:30,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 2 states have call successors, (181), 2 states have call predecessors, (181), 2 states have return successors, (180), 2 states have call predecessors, (180), 2 states have call successors, (180) [2021-11-12 23:00:30,779 INFO L276 IsEmpty]: Start isEmpty. Operand 29627 states and 40541 transitions. [2021-11-12 23:00:30,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2198 [2021-11-12 23:00:30,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:30,864 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 60, 60, 41, 41, 34, 34, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 23, 23, 23, 20, 20, 20, 20, 20, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:30,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:00:31,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:00:31,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:00:31,286 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:00:31,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:31,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2133009764, now seen corresponding path program 1 times [2021-11-12 23:00:31,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:00:31,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898074350] [2021-11-12 23:00:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:31,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:00:31,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:00:31,293 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:00:31,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:00:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:45,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 7326 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:00:45,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 27199 backedges. 8575 proven. 7 refuted. 0 times theorem prover too weak. 18617 trivial. 0 not checked. [2021-11-12 23:00:51,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 27199 backedges. 58 proven. 7 refuted. 0 times theorem prover too weak. 27134 trivial. 0 not checked. [2021-11-12 23:00:57,154 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:00:57,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898074350] [2021-11-12 23:00:57,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898074350] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:00:57,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1994412039] [2021-11-12 23:00:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:57,155 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:00:57,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:00:57,156 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:00:57,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-12 23:01:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:00,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 7326 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:01:00,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:01:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 27199 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27199 trivial. 0 not checked. [2021-11-12 23:01:25,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:01:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 27199 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27199 trivial. 0 not checked. [2021-11-12 23:01:33,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1994412039] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:33,483 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:01:33,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-12 23:01:33,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325926229] [2021-11-12 23:01:33,486 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:33,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:01:33,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:01:33,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:01:33,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:01:33,491 INFO L87 Difference]: Start difference. First operand 29627 states and 40541 transitions. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 3 states have call successors, (362), 3 states have call predecessors, (362), 4 states have return successors, (360), 4 states have call predecessors, (360), 3 states have call successors, (360) [2021-11-12 23:01:35,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:01:46,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:46,640 INFO L93 Difference]: Finished difference Result 59202 states and 81018 transitions. [2021-11-12 23:01:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:01:46,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 3 states have call successors, (362), 3 states have call predecessors, (362), 4 states have return successors, (360), 4 states have call predecessors, (360), 3 states have call successors, (360) Word has length 2197 [2021-11-12 23:01:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:46,728 INFO L225 Difference]: With dead ends: 59202 [2021-11-12 23:01:46,728 INFO L226 Difference]: Without dead ends: 29627 [2021-11-12 23:01:46,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8784 GetRequests, 8775 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:01:46,863 INFO L933 BasicCegarLoop]: 3636 mSDtfsCounter, 4868 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 1321 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10481.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4868 SdHoareTripleChecker+Valid, 5869 SdHoareTripleChecker+Invalid, 2726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.44ms SdHoareTripleChecker+Time, 1321 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11245.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:46,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4868 Valid, 5869 Invalid, 2726 Unknown, 0 Unchecked, 22.44ms Time], IncrementalHoareTripleChecker [1321 Valid, 1404 Invalid, 1 Unknown, 0 Unchecked, 11245.60ms Time] [2021-11-12 23:01:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29627 states. [2021-11-12 23:01:48,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29627 to 29627. [2021-11-12 23:01:48,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29627 states, 19659 states have (on average 1.2491479729386032) internal successors, (24557), 20231 states have internal predecessors, (24557), 7977 states have call successors, (7977), 1994 states have call predecessors, (7977), 1990 states have return successors, (8002), 7740 states have call predecessors, (8002), 7977 states have call successors, (8002) [2021-11-12 23:01:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29627 states to 29627 states and 40536 transitions. [2021-11-12 23:01:48,864 INFO L78 Accepts]: Start accepts. Automaton has 29627 states and 40536 transitions. Word has length 2197 [2021-11-12 23:01:48,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:48,866 INFO L470 AbstractCegarLoop]: Abstraction has 29627 states and 40536 transitions. [2021-11-12 23:01:48,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 3 states have call successors, (362), 3 states have call predecessors, (362), 4 states have return successors, (360), 4 states have call predecessors, (360), 3 states have call successors, (360) [2021-11-12 23:01:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 29627 states and 40536 transitions. [2021-11-12 23:01:48,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2199 [2021-11-12 23:01:48,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:48,936 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 60, 60, 41, 41, 34, 34, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 23, 23, 23, 20, 20, 20, 20, 20, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:48,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:01:49,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-12 23:01:49,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:01:49,339 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:01:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:49,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1806961002, now seen corresponding path program 1 times [2021-11-12 23:01:49,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:01:49,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617296351] [2021-11-12 23:01:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:49,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:01:49,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:01:49,346 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:01:49,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:02:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:03,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 7327 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:02:03,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 27199 backedges. 8575 proven. 7 refuted. 0 times theorem prover too weak. 18617 trivial. 0 not checked. [2021-11-12 23:02:09,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 27199 backedges. 58 proven. 7 refuted. 0 times theorem prover too weak. 27134 trivial. 0 not checked. [2021-11-12 23:02:15,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:02:15,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617296351] [2021-11-12 23:02:15,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617296351] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:02:15,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [909297250] [2021-11-12 23:02:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:15,458 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:02:15,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:02:15,458 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:02:15,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-12 23:02:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:18,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 7327 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:02:18,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 27199 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27199 trivial. 0 not checked. [2021-11-12 23:02:44,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 27199 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27199 trivial. 0 not checked. [2021-11-12 23:02:53,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [909297250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:53,930 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:02:53,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [5, 5] total 11 [2021-11-12 23:02:53,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963667771] [2021-11-12 23:02:53,934 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:53,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:02:53,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:02:53,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:02:53,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:02:53,939 INFO L87 Difference]: Start difference. First operand 29627 states and 40536 transitions. Second operand has 5 states, 5 states have (on average 175.4) internal successors, (877), 5 states have internal predecessors, (877), 3 states have call successors, (362), 3 states have call predecessors, (362), 4 states have return successors, (360), 4 states have call predecessors, (360), 3 states have call successors, (360) [2021-11-12 23:02:56,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:03:08,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:08,744 INFO L93 Difference]: Finished difference Result 59202 states and 81008 transitions. [2021-11-12 23:03:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:03:08,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 175.4) internal successors, (877), 5 states have internal predecessors, (877), 3 states have call successors, (362), 3 states have call predecessors, (362), 4 states have return successors, (360), 4 states have call predecessors, (360), 3 states have call successors, (360) Word has length 2198 [2021-11-12 23:03:08,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:08,847 INFO L225 Difference]: With dead ends: 59202 [2021-11-12 23:03:08,847 INFO L226 Difference]: Without dead ends: 29627 [2021-11-12 23:03:08,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8788 GetRequests, 8779 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:03:08,935 INFO L933 BasicCegarLoop]: 3635 mSDtfsCounter, 4865 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 1321 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11620.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4865 SdHoareTripleChecker+Valid, 5867 SdHoareTripleChecker+Invalid, 2726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.43ms SdHoareTripleChecker+Time, 1321 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12510.03ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:08,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4865 Valid, 5867 Invalid, 2726 Unknown, 0 Unchecked, 24.43ms Time], IncrementalHoareTripleChecker [1321 Valid, 1404 Invalid, 1 Unknown, 0 Unchecked, 12510.03ms Time] [2021-11-12 23:03:08,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29627 states. [2021-11-12 23:03:11,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29627 to 29627. [2021-11-12 23:03:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29627 states, 19659 states have (on average 1.2488936365023653) internal successors, (24552), 20231 states have internal predecessors, (24552), 7977 states have call successors, (7977), 1994 states have call predecessors, (7977), 1990 states have return successors, (8002), 7740 states have call predecessors, (8002), 7977 states have call successors, (8002) [2021-11-12 23:03:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29627 states to 29627 states and 40531 transitions. [2021-11-12 23:03:11,156 INFO L78 Accepts]: Start accepts. Automaton has 29627 states and 40531 transitions. Word has length 2198 [2021-11-12 23:03:11,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:11,158 INFO L470 AbstractCegarLoop]: Abstraction has 29627 states and 40531 transitions. [2021-11-12 23:03:11,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.4) internal successors, (877), 5 states have internal predecessors, (877), 3 states have call successors, (362), 3 states have call predecessors, (362), 4 states have return successors, (360), 4 states have call predecessors, (360), 3 states have call successors, (360) [2021-11-12 23:03:11,158 INFO L276 IsEmpty]: Start isEmpty. Operand 29627 states and 40531 transitions. [2021-11-12 23:03:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2200 [2021-11-12 23:03:11,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:11,236 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 60, 60, 41, 41, 34, 34, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 23, 23, 23, 20, 20, 20, 20, 20, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:11,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:11,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:11,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:03:11,637 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:03:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash 403900576, now seen corresponding path program 1 times [2021-11-12 23:03:11,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:11,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716136321] [2021-11-12 23:03:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:11,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:11,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:11,645 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:11,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:03:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:26,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 7328 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:03:26,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 27199 backedges. 8575 proven. 7 refuted. 0 times theorem prover too weak. 18617 trivial. 0 not checked. [2021-11-12 23:03:33,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 27199 backedges. 58 proven. 7 refuted. 0 times theorem prover too weak. 27134 trivial. 0 not checked. [2021-11-12 23:03:39,438 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:03:39,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716136321] [2021-11-12 23:03:39,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716136321] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:03:39,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [579729851] [2021-11-12 23:03:39,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:39,439 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:03:39,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:03:39,439 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:03:39,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0895a81-4e25-4db9-bde4-f805bd191c0d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-12 23:03:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:42,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 7328 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:03:42,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:04:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 27199 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27199 trivial. 0 not checked. [2021-11-12 23:04:08,235 INFO L328 TraceCheckSpWp]: Computing backward predicates...