./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8 --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 08c4ab5181b7abd6700c38bd6f4a3ecc0debf94ce89805012c81d15880051c78 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:29:22,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:29:22,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:29:22,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:29:22,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:29:22,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:29:22,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:29:22,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:29:22,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:29:22,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:29:22,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:29:22,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:29:22,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:29:22,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:29:22,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:29:22,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:29:22,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:29:22,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:29:22,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:29:22,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:29:22,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:29:22,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:29:22,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:29:22,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:29:22,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:29:22,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:29:22,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:29:22,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:29:22,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:29:22,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:29:22,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:29:22,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:29:22,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:29:22,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:29:22,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:29:22,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:29:22,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:29:22,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:29:22,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:29:22,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:29:22,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:29:22,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:29:22,351 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:29:22,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:29:22,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:29:22,353 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:29:22,353 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:29:22,353 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:29:22,353 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:29:22,354 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:29:22,354 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:29:22,354 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:29:22,355 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:29:22,355 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:29:22,355 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:29:22,356 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:29:22,356 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:29:22,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:29:22,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:29:22,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:29:22,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:29:22,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:29:22,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:29:22,358 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:29:22,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:29:22,359 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:29:22,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:29:22,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:29:22,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:29:22,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:22,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:29:22,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:29:22,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:29:22,361 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:29:22,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:29:22,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:29:22,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:29:22,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:29:22,363 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08c4ab5181b7abd6700c38bd6f4a3ecc0debf94ce89805012c81d15880051c78 [2021-11-07 01:29:22,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:29:22,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:29:22,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:29:22,643 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:29:22,644 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:29:22,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-07 01:29:22,718 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/data/2cc38668d/1665c1e8cea84ba6b2960ca06f84c7b7/FLAGb80a5e2b2 [2021-11-07 01:29:23,775 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:29:23,776 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-07 01:29:23,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/data/2cc38668d/1665c1e8cea84ba6b2960ca06f84c7b7/FLAGb80a5e2b2 [2021-11-07 01:29:24,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/data/2cc38668d/1665c1e8cea84ba6b2960ca06f84c7b7 [2021-11-07 01:29:24,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:29:24,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:29:24,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:24,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:29:24,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:29:24,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:24" (1/1) ... [2021-11-07 01:29:24,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483261a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:24, skipping insertion in model container [2021-11-07 01:29:24,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:24" (1/1) ... [2021-11-07 01:29:24,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:29:24,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:27,053 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:29:27,060 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:29:27,067 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:29:27,606 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:29:27,607 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:29:27,890 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:29:29,315 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[445714,445727] [2021-11-07 01:29:29,320 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[445883,445896] [2021-11-07 01:29:29,320 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446050,446063] [2021-11-07 01:29:29,321 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446218,446231] [2021-11-07 01:29:29,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:29,497 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) [2021-11-07 01:29:29,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@77e254d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:29, skipping insertion in model container [2021-11-07 01:29:29,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:29,499 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:29:29,501 INFO L168 Benchmark]: Toolchain (without parser) took 5442.33 ms. Allocated memory was 107.0 MB in the beginning and 203.4 MB in the end (delta: 96.5 MB). Free memory was 56.8 MB in the beginning and 94.9 MB in the end (delta: -38.1 MB). Peak memory consumption was 70.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:29,502 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 107.0 MB. Free memory is still 58.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:29:29,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 5413.31 ms. Allocated memory was 107.0 MB in the beginning and 203.4 MB in the end (delta: 96.5 MB). Free memory was 76.1 MB in the beginning and 94.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 88.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:29,506 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 107.0 MB. Free memory is still 58.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 5413.31 ms. Allocated memory was 107.0 MB in the beginning and 203.4 MB in the end (delta: 96.5 MB). Free memory was 76.1 MB in the beginning and 94.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 88.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6624]: 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8 --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 08c4ab5181b7abd6700c38bd6f4a3ecc0debf94ce89805012c81d15880051c78 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:29:31,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:29:31,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:29:31,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:29:31,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:29:31,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:29:31,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:29:31,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:29:31,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:29:31,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:29:31,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:29:31,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:29:31,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:29:31,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:29:31,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:29:31,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:29:31,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:29:31,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:29:31,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:29:31,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:29:31,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:29:31,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:29:31,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:29:31,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:29:32,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:29:32,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:29:32,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:29:32,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:29:32,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:29:32,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:29:32,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:29:32,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:29:32,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:29:32,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:29:32,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:29:32,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:29:32,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:29:32,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:29:32,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:29:32,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:29:32,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:29:32,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:29:32,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:29:32,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:29:32,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:29:32,083 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:29:32,083 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:29:32,084 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:29:32,084 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:29:32,084 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:29:32,084 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:29:32,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:29:32,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:29:32,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:29:32,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:29:32,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:29:32,088 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:29:32,088 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:29:32,089 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:29:32,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:29:32,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:29:32,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:29:32,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:29:32,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:29:32,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:29:32,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:32,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:29:32,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:29:32,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:29:32,091 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:29:32,092 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:32,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:29:32,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:29:32,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:29:32,092 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08c4ab5181b7abd6700c38bd6f4a3ecc0debf94ce89805012c81d15880051c78 [2021-11-07 01:29:32,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:29:32,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:29:32,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:29:32,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:29:32,571 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:29:32,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-07 01:29:32,658 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/data/6f210b3e2/a72ae45ccbe34a13bf11eae965ef3b34/FLAG8a940815d [2021-11-07 01:29:33,905 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:29:33,906 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-07 01:29:33,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/data/6f210b3e2/a72ae45ccbe34a13bf11eae965ef3b34/FLAG8a940815d [2021-11-07 01:29:34,126 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/data/6f210b3e2/a72ae45ccbe34a13bf11eae965ef3b34 [2021-11-07 01:29:34,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:29:34,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:29:34,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:34,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:29:34,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:29:34,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:34" (1/1) ... [2021-11-07 01:29:34,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cfa1c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:34, skipping insertion in model container [2021-11-07 01:29:34,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:34" (1/1) ... [2021-11-07 01:29:34,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:29:34,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:39,713 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[445714,445727] [2021-11-07 01:29:39,716 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[445883,445896] [2021-11-07 01:29:39,716 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446050,446063] [2021-11-07 01:29:39,717 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446218,446231] [2021-11-07 01:29:39,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:39,839 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:29:39,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:40,421 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[445714,445727] [2021-11-07 01:29:40,421 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[445883,445896] [2021-11-07 01:29:40,422 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446050,446063] [2021-11-07 01:29:40,422 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446218,446231] [2021-11-07 01:29:40,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:40,537 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:29:41,093 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[445714,445727] [2021-11-07 01:29:41,094 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[445883,445896] [2021-11-07 01:29:41,095 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446050,446063] [2021-11-07 01:29:41,095 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_c04a5453-31c5-4247-9dfa-c962ebcc772d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446218,446231] [2021-11-07 01:29:41,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:41,692 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:29:41,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:41 WrapperNode [2021-11-07 01:29:41,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:41,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:41,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:29:41,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:29:41,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:41" (1/1) ... [2021-11-07 01:29:41,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:41" (1/1) ... [2021-11-07 01:29:43,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:43,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:29:43,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:29:43,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:29:43,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:41" (1/1) ... [2021-11-07 01:29:43,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:41" (1/1) ... [2021-11-07 01:29:43,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:41" (1/1) ... [2021-11-07 01:29:43,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:41" (1/1) ... [2021-11-07 01:29:44,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:41" (1/1) ... [2021-11-07 01:29:44,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:41" (1/1) ... [2021-11-07 01:29:45,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:41" (1/1) ... [2021-11-07 01:29:45,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:29:45,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:29:45,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:29:45,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:29:45,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:41" (1/1) ... [2021-11-07 01:29:45,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:29:45,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:29:45,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:29:45,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:29:45,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:29:45,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:29:45,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:29:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:29:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:29:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:29:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:29:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:29:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:29:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:29:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:29:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:29:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:29:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:29:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:29:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:29:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:29:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:29:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:29:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:29:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:29:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:29:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:29:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:29:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:29:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:29:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:29:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:40:03,487 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0bv32; [2021-11-07 01:40:03,487 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0bv32; [2021-11-07 01:40:03,487 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0bv32; [2021-11-07 01:40:03,488 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0bv32; [2021-11-07 01:40:03,491 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 01:40:03,493 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0bv32; [2021-11-07 01:40:03,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:40:03,573 INFO L299 CfgBuilder]: Removed 9514 assume(true) statements. [2021-11-07 01:40:03,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:03 BoogieIcfgContainer [2021-11-07 01:40:03,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:40:03,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:40:03,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:40:03,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:40:03,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:29:34" (1/3) ... [2021-11-07 01:40:03,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568dd9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:03, skipping insertion in model container [2021-11-07 01:40:03,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:41" (2/3) ... [2021-11-07 01:40:03,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568dd9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:03, skipping insertion in model container [2021-11-07 01:40:03,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:03" (3/3) ... [2021-11-07 01:40:03,596 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-07 01:40:03,603 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:40:03,604 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 69 error locations. [2021-11-07 01:40:03,708 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:40:03,715 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 [2021-11-07 01:40:03,716 INFO L340 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2021-11-07 01:40:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 9011 states, 8942 states have (on average 1.3325877879668977) internal successors, (11916), 9010 states have internal predecessors, (11916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:03,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:40:03,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:03,899 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:03,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 66 more)] === [2021-11-07 01:40:03,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:03,907 INFO L85 PathProgramCache]: Analyzing trace with hash -105954818, now seen corresponding path program 1 times [2021-11-07 01:40:03,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:03,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618058268] [2021-11-07 01:40:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:03,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:03,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:03,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:03,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:40:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:07,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 2216 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:07,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:08,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:09,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:09,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618058268] [2021-11-07 01:40:09,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618058268] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:09,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:09,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:09,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069351110] [2021-11-07 01:40:09,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:09,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:09,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:09,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:09,651 INFO L87 Difference]: Start difference. First operand has 9011 states, 8942 states have (on average 1.3325877879668977) internal successors, (11916), 9010 states have internal predecessors, (11916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:16,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:16,215 INFO L93 Difference]: Finished difference Result 34255 states and 45325 transitions. [2021-11-07 01:40:16,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:16,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 01:40:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:16,444 INFO L225 Difference]: With dead ends: 34255 [2021-11-07 01:40:16,445 INFO L226 Difference]: Without dead ends: 24801 [2021-11-07 01:40:16,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24801 states. [2021-11-07 01:40:18,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24801 to 24005. [2021-11-07 01:40:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24005 states, 23936 states have (on average 1.3075284090909092) internal successors, (31297), 24004 states have internal predecessors, (31297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:18,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24005 states to 24005 states and 31297 transitions. [2021-11-07 01:40:18,198 INFO L78 Accepts]: Start accepts. Automaton has 24005 states and 31297 transitions. Word has length 73 [2021-11-07 01:40:18,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:18,199 INFO L470 AbstractCegarLoop]: Abstraction has 24005 states and 31297 transitions. [2021-11-07 01:40:18,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:18,201 INFO L276 IsEmpty]: Start isEmpty. Operand 24005 states and 31297 transitions. [2021-11-07 01:40:18,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 01:40:18,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:18,207 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:18,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:18,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:18,423 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 66 more)] === [2021-11-07 01:40:18,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:18,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1581454207, now seen corresponding path program 1 times [2021-11-07 01:40:18,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:18,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459047730] [2021-11-07 01:40:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:18,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:18,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:18,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:18,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:40:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:21,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:21,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:22,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:23,242 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:23,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459047730] [2021-11-07 01:40:23,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459047730] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:23,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:23,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:23,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325825762] [2021-11-07 01:40:23,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:23,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:23,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:23,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:23,248 INFO L87 Difference]: Start difference. First operand 24005 states and 31297 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:28,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:28,428 INFO L93 Difference]: Finished difference Result 95002 states and 124083 transitions. [2021-11-07 01:40:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:28,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 01:40:28,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:28,712 INFO L225 Difference]: With dead ends: 95002 [2021-11-07 01:40:28,713 INFO L226 Difference]: Without dead ends: 71153 [2021-11-07 01:40:28,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:29,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71153 states. [2021-11-07 01:40:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71153 to 71021. [2021-11-07 01:40:31,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71021 states, 70952 states have (on average 1.308927162025031) internal successors, (92871), 71020 states have internal predecessors, (92871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71021 states to 71021 states and 92871 transitions. [2021-11-07 01:40:32,361 INFO L78 Accepts]: Start accepts. Automaton has 71021 states and 92871 transitions. Word has length 75 [2021-11-07 01:40:32,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:32,366 INFO L470 AbstractCegarLoop]: Abstraction has 71021 states and 92871 transitions. [2021-11-07 01:40:32,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:32,367 INFO L276 IsEmpty]: Start isEmpty. Operand 71021 states and 92871 transitions. [2021-11-07 01:40:32,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:40:32,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:32,371 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:32,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:40:32,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:32,594 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 66 more)] === [2021-11-07 01:40:32,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash 428041036, now seen corresponding path program 1 times [2021-11-07 01:40:32,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:32,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775249095] [2021-11-07 01:40:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:32,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:32,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:32,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:32,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:40:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:35,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 2241 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:35,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:36,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:37,726 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:37,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775249095] [2021-11-07 01:40:37,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775249095] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:37,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:37,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:37,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980381203] [2021-11-07 01:40:37,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:37,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:37,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:37,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:37,729 INFO L87 Difference]: Start difference. First operand 71021 states and 92871 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:47,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:47,777 INFO L93 Difference]: Finished difference Result 257564 states and 336372 transitions. [2021-11-07 01:40:47,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:47,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 01:40:47,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:48,565 INFO L225 Difference]: With dead ends: 257564 [2021-11-07 01:40:48,565 INFO L226 Difference]: Without dead ends: 186699 [2021-11-07 01:40:48,747 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:48,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186699 states. [2021-11-07 01:40:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186699 to 184472. [2021-11-07 01:40:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184472 states, 184403 states have (on average 1.307256389538131) internal successors, (241062), 184471 states have internal predecessors, (241062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:56,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184472 states to 184472 states and 241062 transitions. [2021-11-07 01:40:56,297 INFO L78 Accepts]: Start accepts. Automaton has 184472 states and 241062 transitions. Word has length 79 [2021-11-07 01:40:56,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:56,298 INFO L470 AbstractCegarLoop]: Abstraction has 184472 states and 241062 transitions. [2021-11-07 01:40:56,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:56,299 INFO L276 IsEmpty]: Start isEmpty. Operand 184472 states and 241062 transitions. [2021-11-07 01:40:56,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:40:56,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:56,302 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:56,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:56,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:56,523 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 66 more)] === [2021-11-07 01:40:56,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:56,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1875511950, now seen corresponding path program 1 times [2021-11-07 01:40:56,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:56,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107546540] [2021-11-07 01:40:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:56,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:56,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:56,528 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:56,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c04a5453-31c5-4247-9dfa-c962ebcc772d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:40:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:59,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 2273 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:59,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:00,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:00,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:01,825 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:01,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107546540] [2021-11-07 01:41:01,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107546540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:01,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:01,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:41:01,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283085388] [2021-11-07 01:41:01,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:41:01,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:01,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:41:01,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:41:01,827 INFO L87 Difference]: Start difference. First operand 184472 states and 241062 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)