./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-alteon-acenic.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c26285c798d9eae93470e6619d316c691c81cc1a0579ebf111c5d2cbbd8c7126 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:21:52,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:21:52,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:21:52,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:21:52,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:21:52,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:21:52,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:21:52,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:21:52,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:21:52,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:21:52,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:21:52,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:21:52,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:21:52,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:21:52,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:21:52,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:21:52,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:21:52,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:21:52,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:21:52,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:21:52,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:21:52,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:21:52,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:21:52,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:21:52,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:21:52,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:21:52,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:21:52,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:21:52,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:21:52,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:21:52,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:21:52,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:21:52,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:21:52,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:21:52,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:21:52,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:21:52,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:21:52,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:21:52,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:21:52,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:21:52,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:21:52,473 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:21:52,528 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:21:52,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:21:52,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:21:52,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:21:52,531 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:21:52,531 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:21:52,539 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:21:52,539 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:21:52,539 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:21:52,540 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:21:52,541 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:21:52,541 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:21:52,542 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:21:52,542 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:21:52,542 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:21:52,543 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:21:52,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:21:52,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:21:52,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:21:52,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:21:52,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:21:52,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:21:52,545 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:21:52,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:21:52,546 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:21:52,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:21:52,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:21:52,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:21:52,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:21:52,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:21:52,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:21:52,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:21:52,548 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:21:52,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:21:52,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:21:52,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:21:52,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:21:52,549 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_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c26285c798d9eae93470e6619d316c691c81cc1a0579ebf111c5d2cbbd8c7126 [2021-11-19 14:21:52,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:21:52,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:21:52,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:21:52,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:21:52,961 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:21:52,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-19 14:21:53,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/data/6d2314aea/6a3e1d1613384aa589e608e57c45066b/FLAG034e2324f [2021-11-19 14:21:54,174 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:21:54,176 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-19 14:21:54,260 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/data/6d2314aea/6a3e1d1613384aa589e608e57c45066b/FLAG034e2324f [2021-11-19 14:21:54,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/data/6d2314aea/6a3e1d1613384aa589e608e57c45066b [2021-11-19 14:21:54,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:21:54,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:21:54,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:54,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:21:54,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:21:54,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:54" (1/1) ... [2021-11-19 14:21:54,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b09a1a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:54, skipping insertion in model container [2021-11-19 14:21:54,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:54" (1/1) ... [2021-11-19 14:21:54,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:21:54,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:21:58,559 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373388,373401] [2021-11-19 14:21:58,562 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373533,373546] [2021-11-19 14:21:58,577 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:21:58,631 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:21:58,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55df108b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:58, skipping insertion in model container [2021-11-19 14:21:58,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:58,632 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:21:58,635 INFO L158 Benchmark]: Toolchain (without parser) took 4185.55ms. Allocated memory was 113.2MB in the beginning and 165.7MB in the end (delta: 52.4MB). Free memory was 78.0MB in the beginning and 98.9MB in the end (delta: -20.9MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2021-11-19 14:21:58,636 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory was 88.4MB in the beginning and 88.3MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:21:58,638 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4179.16ms. Allocated memory was 113.2MB in the beginning and 165.7MB in the end (delta: 52.4MB). Free memory was 78.0MB in the beginning and 98.9MB in the end (delta: -20.9MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2021-11-19 14:21:58,640 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory was 88.4MB in the beginning and 88.3MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4179.16ms. Allocated memory was 113.2MB in the beginning and 165.7MB in the end (delta: 52.4MB). Free memory was 78.0MB in the beginning and 98.9MB in the end (delta: -20.9MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7197]: 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_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c26285c798d9eae93470e6619d316c691c81cc1a0579ebf111c5d2cbbd8c7126 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:22:01,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:22:01,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:22:01,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:22:01,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:22:01,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:22:01,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:22:01,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:22:01,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:22:01,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:22:01,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:22:01,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:22:01,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:22:01,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:22:01,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:22:01,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:22:01,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:22:01,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:22:01,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:22:01,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:22:01,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:22:01,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:22:01,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:22:01,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:22:01,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:22:01,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:22:01,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:22:01,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:22:01,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:22:01,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:22:01,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:22:01,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:22:01,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:22:01,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:22:01,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:22:01,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:22:01,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:22:01,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:22:01,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:22:01,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:22:01,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:22:01,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:22:01,476 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:22:01,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:22:01,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:22:01,478 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:22:01,478 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:22:01,478 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:22:01,479 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:22:01,479 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:22:01,479 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:22:01,480 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:22:01,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:22:01,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:22:01,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:22:01,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:22:01,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:22:01,482 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:22:01,482 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:22:01,482 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:22:01,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:22:01,483 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:22:01,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:22:01,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:22:01,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:22:01,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:22:01,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:22:01,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:22:01,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:22:01,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:22:01,485 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:22:01,486 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:22:01,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:22:01,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:22:01,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:22:01,487 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_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c26285c798d9eae93470e6619d316c691c81cc1a0579ebf111c5d2cbbd8c7126 [2021-11-19 14:22:01,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:22:01,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:22:01,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:22:01,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:22:01,995 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:22:01,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-19 14:22:02,070 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/data/f006b5fe7/b5b515c44b8a4c6084b816f26e2177e8/FLAG8551b1943 [2021-11-19 14:22:03,260 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:22:03,262 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-19 14:22:03,358 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/data/f006b5fe7/b5b515c44b8a4c6084b816f26e2177e8/FLAG8551b1943 [2021-11-19 14:22:03,469 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/data/f006b5fe7/b5b515c44b8a4c6084b816f26e2177e8 [2021-11-19 14:22:03,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:22:03,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:22:03,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:22:03,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:22:03,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:22:03,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:22:03" (1/1) ... [2021-11-19 14:22:03,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7242783f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:22:03, skipping insertion in model container [2021-11-19 14:22:03,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:22:03" (1/1) ... [2021-11-19 14:22:03,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:22:03,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:22:07,513 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373388,373401] [2021-11-19 14:22:07,516 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373533,373546] [2021-11-19 14:22:07,532 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:22:07,594 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:22:07,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:22:08,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373388,373401] [2021-11-19 14:22:08,239 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373533,373546] [2021-11-19 14:22:08,246 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:22:08,294 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:22:08,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373388,373401] [2021-11-19 14:22:08,846 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373533,373546] [2021-11-19 14:22:08,853 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:22:09,121 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:22:09,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:22:09 WrapperNode [2021-11-19 14:22:09,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:22:09,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:22:09,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:22:09,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:22:09,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:22:09" (1/1) ... [2021-11-19 14:22:09,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:22:09" (1/1) ... [2021-11-19 14:22:09,541 INFO L137 Inliner]: procedures = 438, calls = 2434, calls flagged for inlining = 186, calls inlined = 170, statements flattened = 5399 [2021-11-19 14:22:09,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:22:09,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:22:09,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:22:09,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:22:09,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:22:09" (1/1) ... [2021-11-19 14:22:09,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:22:09" (1/1) ... [2021-11-19 14:22:09,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:22:09" (1/1) ... [2021-11-19 14:22:09,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:22:09" (1/1) ... [2021-11-19 14:22:09,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:22:09" (1/1) ... [2021-11-19 14:22:09,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:22:09" (1/1) ... [2021-11-19 14:22:10,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:22:09" (1/1) ... [2021-11-19 14:22:10,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:22:10,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:22:10,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:22:10,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:22:10,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:22:09" (1/1) ... [2021-11-19 14:22:10,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:22:10,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:22:10,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:22:10,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:22:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-19 14:22:10,232 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-19 14:22:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:22:10,232 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:22:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-19 14:22:10,233 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-19 14:22:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 14:22:10,233 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 14:22:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:22:10,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:22:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-19 14:22:10,234 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-19 14:22:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-19 14:22:10,234 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-19 14:22:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 14:22:10,235 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 14:22:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_start [2021-11-19 14:22:10,235 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_start [2021-11-19 14:22:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-19 14:22:10,235 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-19 14:22:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-19 14:22:10,236 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-19 14:22:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure ace_load_jumbo_rx_ring [2021-11-19 14:22:10,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ace_load_jumbo_rx_ring [2021-11-19 14:22:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure ace_load_std_rx_ring [2021-11-19 14:22:10,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ace_load_std_rx_ring [2021-11-19 14:22:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_page [2021-11-19 14:22:10,237 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_page [2021-11-19 14:22:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 14:22:10,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 14:22:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:22:10,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:22:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 14:22:10,239 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 14:22:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-19 14:22:10,239 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-19 14:22:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 14:22:10,240 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 14:22:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:22:10,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:22:10,240 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-19 14:22:10,241 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-19 14:22:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure ace_set_multicast_list [2021-11-19 14:22:10,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ace_set_multicast_list [2021-11-19 14:22:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure ace_set_txprd [2021-11-19 14:22:10,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ace_set_txprd [2021-11-19 14:22:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_check_ack [2021-11-19 14:22:10,243 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_check_ack [2021-11-19 14:22:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:22:10,244 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2021-11-19 14:22:10,245 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2021-11-19 14:22:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-19 14:22:10,246 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-19 14:22:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:22:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:22:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:22:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure ace_set_rxtx_parms [2021-11-19 14:22:10,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ace_set_rxtx_parms [2021-11-19 14:22:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 14:22:10,248 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 14:22:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom_byte [2021-11-19 14:22:10,249 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom_byte [2021-11-19 14:22:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 14:22:10,249 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 14:22:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:22:10,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:22:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure tx_space [2021-11-19 14:22:10,251 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_space [2021-11-19 14:22:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 14:22:10,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 14:22:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-19 14:22:10,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-19 14:22:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure set_aceaddr [2021-11-19 14:22:10,252 INFO L138 BoogieDeclarations]: Found implementation of procedure set_aceaddr [2021-11-19 14:22:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 14:22:10,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 14:22:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 14:22:10,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 14:22:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-19 14:22:10,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-19 14:22:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-19 14:22:10,254 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-19 14:22:10,255 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-19 14:22:10,255 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-19 14:22:10,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:22:10,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 14:22:10,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 14:22:10,256 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2021-11-19 14:22:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2021-11-19 14:22:10,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:22:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:22:10,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:22:10,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:22:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:22:10,258 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 14:22:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 14:22:10,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:22:10,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:22:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:22:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:22:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:22:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:22:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_prep [2021-11-19 14:22:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_prep [2021-11-19 14:22:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-19 14:22:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-19 14:22:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-19 14:22:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-19 14:22:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure ace_issue_cmd [2021-11-19 14:22:10,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ace_issue_cmd [2021-11-19 14:22:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 14:22:10,266 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 14:22:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 14:22:10,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 14:22:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-19 14:22:10,267 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-19 14:22:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-19 14:22:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-19 14:22:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:22:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-19 14:22:10,275 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-19 14:22:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:22:10,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:22:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-19 14:22:10,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-19 14:22:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:22:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure ace_load_mini_rx_ring [2021-11-19 14:22:10,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ace_load_mini_rx_ring [2021-11-19 14:22:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:22:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:22:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:22:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:22:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:22:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:22:10,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:22:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-19 14:22:10,278 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-19 14:22:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2021-11-19 14:22:10,279 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2021-11-19 14:22:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-19 14:22:10,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-19 14:22:10,279 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub [2021-11-19 14:22:10,280 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub [2021-11-19 14:22:10,280 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-19 14:22:10,280 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-19 14:22:10,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:22:10,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:22:10,280 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 14:22:10,281 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 14:22:10,281 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-19 14:22:10,281 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-19 14:22:10,281 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-19 14:22:10,281 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-19 14:22:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure acenic_remove_one [2021-11-19 14:22:10,282 INFO L138 BoogieDeclarations]: Found implementation of procedure acenic_remove_one [2021-11-19 14:22:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 14:22:10,282 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 14:22:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:22:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure ace_init_cleanup [2021-11-19 14:22:10,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ace_init_cleanup [2021-11-19 14:22:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-19 14:22:10,283 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-19 14:22:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 14:22:10,283 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 14:22:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:22:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:22:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:22:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:22:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:22:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:22:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-19 14:22:10,285 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-19 14:22:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 14:22:10,285 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 14:22:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:22:10,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:22:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 14:22:10,286 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 14:22:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 14:22:10,287 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 14:22:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2021-11-19 14:22:10,288 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2021-11-19 14:22:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:22:10,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:22:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 14:22:10,288 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 14:22:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 14:22:10,289 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 14:22:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:22:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:22:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:22:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:22:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:22:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:22:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-19 14:22:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-19 14:22:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure ace_open [2021-11-19 14:22:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ace_open [2021-11-19 14:22:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure ace_close [2021-11-19 14:22:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ace_close [2021-11-19 14:22:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:22:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:22:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure prefetchw [2021-11-19 14:22:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure prefetchw [2021-11-19 14:22:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure ace_map_tx_skb [2021-11-19 14:22:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ace_map_tx_skb [2021-11-19 14:22:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure ace_load_tx_bd [2021-11-19 14:22:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ace_load_tx_bd [2021-11-19 14:22:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2021-11-19 14:22:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2021-11-19 14:22:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure ace_watchdog [2021-11-19 14:22:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ace_watchdog [2021-11-19 14:22:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-19 14:22:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-19 14:22:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:22:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:22:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-11-19 14:22:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-11-19 14:22:11,391 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:22:11,399 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:22:12,311 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:23:03,797 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:23:03,876 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:23:03,907 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:23:03,908 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:23:03,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:23:03 BoogieIcfgContainer [2021-11-19 14:23:03,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:23:03,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:23:03,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:23:03,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:23:03,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:22:03" (1/3) ... [2021-11-19 14:23:03,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ae450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:23:03, skipping insertion in model container [2021-11-19 14:23:03,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:22:09" (2/3) ... [2021-11-19 14:23:03,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ae450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:23:03, skipping insertion in model container [2021-11-19 14:23:03,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:23:03" (3/3) ... [2021-11-19 14:23:03,926 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-19 14:23:03,937 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:23:03,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:23:04,030 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:23:04,039 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:23:04,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:23:04,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 2026 states, 1332 states have (on average 1.2867867867867868) internal successors, (1714), 1394 states have internal predecessors, (1714), 600 states have call successors, (600), 94 states have call predecessors, (600), 93 states have return successors, (595), 580 states have call predecessors, (595), 595 states have call successors, (595) [2021-11-19 14:23:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 14:23:04,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:04,166 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 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] [2021-11-19 14:23:04,167 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:04,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:04,176 INFO L85 PathProgramCache]: Analyzing trace with hash -960632225, now seen corresponding path program 1 times [2021-11-19 14:23:04,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:04,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590973502] [2021-11-19 14:23:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:04,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:04,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:04,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:04,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:23:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:06,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:23:06,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:07,297 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-19 14:23:07,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-19 14:23:07,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:07,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590973502] [2021-11-19 14:23:07,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590973502] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:07,773 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:07,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:23:07,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874405092] [2021-11-19 14:23:07,777 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:07,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:23:07,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:07,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:23:07,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:23:07,839 INFO L87 Difference]: Start difference. First operand has 2026 states, 1332 states have (on average 1.2867867867867868) internal successors, (1714), 1394 states have internal predecessors, (1714), 600 states have call successors, (600), 94 states have call predecessors, (600), 93 states have return successors, (595), 580 states have call predecessors, (595), 595 states have call successors, (595) Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 14:23:10,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:10,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:10,655 INFO L93 Difference]: Finished difference Result 5687 states and 8289 transitions. [2021-11-19 14:23:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:23:10,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 127 [2021-11-19 14:23:10,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:10,703 INFO L225 Difference]: With dead ends: 5687 [2021-11-19 14:23:10,703 INFO L226 Difference]: Without dead ends: 3601 [2021-11-19 14:23:10,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:23:10,725 INFO L933 BasicCegarLoop]: 3445 mSDtfsCounter, 2443 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 6206 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:10,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2443 Valid, 6206 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:23:10,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-19 14:23:11,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3597. [2021-11-19 14:23:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 2372 states have (on average 1.276981450252951) internal successors, (3029), 2479 states have internal predecessors, (3029), 1051 states have call successors, (1051), 174 states have call predecessors, (1051), 173 states have return successors, (1052), 1022 states have call predecessors, (1052), 1051 states have call successors, (1052) [2021-11-19 14:23:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5132 transitions. [2021-11-19 14:23:11,225 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5132 transitions. Word has length 127 [2021-11-19 14:23:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:11,226 INFO L470 AbstractCegarLoop]: Abstraction has 3597 states and 5132 transitions. [2021-11-19 14:23:11,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 14:23:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5132 transitions. [2021-11-19 14:23:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-19 14:23:11,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:11,235 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 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] [2021-11-19 14:23:11,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:11,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:11,463 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:11,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:11,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1935363217, now seen corresponding path program 1 times [2021-11-19 14:23:11,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:11,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29967231] [2021-11-19 14:23:11,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:11,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:11,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:11,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:11,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:23:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:13,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 1954 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:23:13,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-11-19 14:23:14,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-11-19 14:23:14,859 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:14,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29967231] [2021-11-19 14:23:14,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29967231] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:14,859 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:14,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:23:14,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945149135] [2021-11-19 14:23:14,860 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:14,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:23:14,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:23:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:23:14,863 INFO L87 Difference]: Start difference. First operand 3597 states and 5132 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-19 14:23:17,088 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 [] [2021-11-19 14:23:23,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:23,556 INFO L93 Difference]: Finished difference Result 10144 states and 14276 transitions. [2021-11-19 14:23:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:23:23,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 170 [2021-11-19 14:23:23,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:23,616 INFO L225 Difference]: With dead ends: 10144 [2021-11-19 14:23:23,616 INFO L226 Difference]: Without dead ends: 6564 [2021-11-19 14:23:23,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:23:23,635 INFO L933 BasicCegarLoop]: 3607 mSDtfsCounter, 3948 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3948 SdHoareTripleChecker+Valid, 6936 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:23,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3948 Valid, 6936 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1232 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-19 14:23:23,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6564 states. [2021-11-19 14:23:24,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6564 to 6556. [2021-11-19 14:23:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6556 states, 4474 states have (on average 1.2780509611086277) internal successors, (5718), 4686 states have internal predecessors, (5718), 1704 states have call successors, (1704), 378 states have call predecessors, (1704), 377 states have return successors, (1705), 1657 states have call predecessors, (1705), 1704 states have call successors, (1705) [2021-11-19 14:23:24,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6556 states to 6556 states and 9127 transitions. [2021-11-19 14:23:24,116 INFO L78 Accepts]: Start accepts. Automaton has 6556 states and 9127 transitions. Word has length 170 [2021-11-19 14:23:24,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:24,118 INFO L470 AbstractCegarLoop]: Abstraction has 6556 states and 9127 transitions. [2021-11-19 14:23:24,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-19 14:23:24,119 INFO L276 IsEmpty]: Start isEmpty. Operand 6556 states and 9127 transitions. [2021-11-19 14:23:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-19 14:23:24,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:24,126 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 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] [2021-11-19 14:23:24,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:24,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:24,349 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:24,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:24,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1257922611, now seen corresponding path program 1 times [2021-11-19 14:23:24,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:24,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908135496] [2021-11-19 14:23:24,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:24,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:24,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:24,355 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:24,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:23:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:26,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1893 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:23:26,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-19 14:23:27,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 14:23:27,697 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:27,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908135496] [2021-11-19 14:23:27,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908135496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:27,698 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:27,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:23:27,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775909718] [2021-11-19 14:23:27,698 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:27,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:23:27,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:27,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:23:27,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:23:27,702 INFO L87 Difference]: Start difference. First operand 6556 states and 9127 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 14:23:29,863 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 [] [2021-11-19 14:23:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:36,992 INFO L93 Difference]: Finished difference Result 23125 states and 32151 transitions. [2021-11-19 14:23:36,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:23:37,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 162 [2021-11-19 14:23:37,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:37,138 INFO L225 Difference]: With dead ends: 23125 [2021-11-19 14:23:37,138 INFO L226 Difference]: Without dead ends: 16586 [2021-11-19 14:23:37,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:23:37,172 INFO L933 BasicCegarLoop]: 4210 mSDtfsCounter, 6506 mSDsluCounter, 4232 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 1076 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6506 SdHoareTripleChecker+Valid, 8442 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1076 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:37,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6506 Valid, 8442 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1076 Valid, 1094 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-11-19 14:23:37,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16586 states. [2021-11-19 14:23:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16586 to 16574. [2021-11-19 14:23:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16574 states, 11142 states have (on average 1.2685334769341232) internal successors, (14134), 11666 states have internal predecessors, (14134), 4422 states have call successors, (4422), 1012 states have call predecessors, (4422), 1009 states have return successors, (4451), 4273 states have call predecessors, (4451), 4422 states have call successors, (4451) [2021-11-19 14:23:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16574 states to 16574 states and 23007 transitions. [2021-11-19 14:23:38,832 INFO L78 Accepts]: Start accepts. Automaton has 16574 states and 23007 transitions. Word has length 162 [2021-11-19 14:23:38,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:38,834 INFO L470 AbstractCegarLoop]: Abstraction has 16574 states and 23007 transitions. [2021-11-19 14:23:38,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 14:23:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand 16574 states and 23007 transitions. [2021-11-19 14:23:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-19 14:23:38,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:38,844 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 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] [2021-11-19 14:23:38,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:39,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:39,069 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:39,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:39,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2032149046, now seen corresponding path program 1 times [2021-11-19 14:23:39,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:39,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873282135] [2021-11-19 14:23:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:39,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:39,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:39,073 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:39,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:23:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:41,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2093 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:23:41,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-19 14:23:42,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-11-19 14:23:42,780 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:42,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873282135] [2021-11-19 14:23:42,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873282135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:42,781 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:42,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:23:42,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481097332] [2021-11-19 14:23:42,782 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:42,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:23:42,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:42,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:23:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:23:42,784 INFO L87 Difference]: Start difference. First operand 16574 states and 23007 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-19 14:23:44,946 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 [] [2021-11-19 14:23:51,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:51,031 INFO L93 Difference]: Finished difference Result 42403 states and 58451 transitions. [2021-11-19 14:23:51,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:23:51,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 231 [2021-11-19 14:23:51,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:51,176 INFO L225 Difference]: With dead ends: 42403 [2021-11-19 14:23:51,177 INFO L226 Difference]: Without dead ends: 25846 [2021-11-19 14:23:51,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:23:51,317 INFO L933 BasicCegarLoop]: 4188 mSDtfsCounter, 3929 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 238 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3929 SdHoareTripleChecker+Valid, 7139 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:51,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3929 Valid, 7139 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1238 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-19 14:23:51,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25846 states. [2021-11-19 14:23:52,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25846 to 25830. [2021-11-19 14:23:52,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25830 states, 17691 states have (on average 1.2701373579786333) internal successors, (22470), 18547 states have internal predecessors, (22470), 6432 states have call successors, (6432), 1709 states have call predecessors, (6432), 1706 states have return successors, (6461), 6205 states have call predecessors, (6461), 6432 states have call successors, (6461) [2021-11-19 14:23:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25830 states to 25830 states and 35363 transitions. [2021-11-19 14:23:52,994 INFO L78 Accepts]: Start accepts. Automaton has 25830 states and 35363 transitions. Word has length 231 [2021-11-19 14:23:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:52,996 INFO L470 AbstractCegarLoop]: Abstraction has 25830 states and 35363 transitions. [2021-11-19 14:23:52,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-19 14:23:52,997 INFO L276 IsEmpty]: Start isEmpty. Operand 25830 states and 35363 transitions. [2021-11-19 14:23:53,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-11-19 14:23:53,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:53,010 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 8, 8, 8, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:53,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:53,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:53,225 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:53,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:53,225 INFO L85 PathProgramCache]: Analyzing trace with hash 976479354, now seen corresponding path program 1 times [2021-11-19 14:23:53,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:53,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929488234] [2021-11-19 14:23:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:53,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:53,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:53,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:53,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:23:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:55,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 2266 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:23:55,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:56,430 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-11-19 14:23:56,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2021-11-19 14:23:57,309 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:57,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929488234] [2021-11-19 14:23:57,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929488234] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:57,309 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:57,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:23:57,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298876319] [2021-11-19 14:23:57,310 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:57,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:23:57,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:57,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:23:57,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:23:57,312 INFO L87 Difference]: Start difference. First operand 25830 states and 35363 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 4 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2021-11-19 14:23:59,454 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 [] [2021-11-19 14:24:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:04,438 INFO L93 Difference]: Finished difference Result 57642 states and 78686 transitions. [2021-11-19 14:24:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:24:04,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 4 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) Word has length 331 [2021-11-19 14:24:04,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:04,612 INFO L225 Difference]: With dead ends: 57642 [2021-11-19 14:24:04,613 INFO L226 Difference]: Without dead ends: 31829 [2021-11-19 14:24:04,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:24:04,700 INFO L933 BasicCegarLoop]: 4232 mSDtfsCounter, 4767 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 820 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4767 SdHoareTripleChecker+Valid, 6488 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:04,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4767 Valid, 6488 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [820 Valid, 701 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-19 14:24:04,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31829 states. [2021-11-19 14:24:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31829 to 31813. [2021-11-19 14:24:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31813 states, 21968 states have (on average 1.2689821558630736) internal successors, (27877), 23035 states have internal predecessors, (27877), 7668 states have call successors, (7668), 2179 states have call predecessors, (7668), 2176 states have return successors, (7697), 7391 states have call predecessors, (7697), 7668 states have call successors, (7697) [2021-11-19 14:24:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31813 states to 31813 states and 43242 transitions. [2021-11-19 14:24:06,713 INFO L78 Accepts]: Start accepts. Automaton has 31813 states and 43242 transitions. Word has length 331 [2021-11-19 14:24:06,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:06,714 INFO L470 AbstractCegarLoop]: Abstraction has 31813 states and 43242 transitions. [2021-11-19 14:24:06,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 4 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2021-11-19 14:24:06,714 INFO L276 IsEmpty]: Start isEmpty. Operand 31813 states and 43242 transitions. [2021-11-19 14:24:06,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-11-19 14:24:06,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:06,732 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 8, 8, 8, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:06,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:24:06,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:24:06,949 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:24:06,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:06,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1014275472, now seen corresponding path program 1 times [2021-11-19 14:24:06,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:24:06,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938098596] [2021-11-19 14:24:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:06,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:24:06,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:24:06,952 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:24:06,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:24:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:09,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:24:09,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:24:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-11-19 14:24:09,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:24:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2021-11-19 14:24:10,735 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:24:10,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938098596] [2021-11-19 14:24:10,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938098596] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:10,735 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:10,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:24:10,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224878062] [2021-11-19 14:24:10,735 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:10,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:24:10,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:24:10,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:24:10,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:24:10,737 INFO L87 Difference]: Start difference. First operand 31813 states and 43242 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 4 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2021-11-19 14:24:12,879 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 [] [2021-11-19 14:24:19,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:19,910 INFO L93 Difference]: Finished difference Result 69118 states and 93893 transitions. [2021-11-19 14:24:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:24:19,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 4 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) Word has length 336 [2021-11-19 14:24:19,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:20,054 INFO L225 Difference]: With dead ends: 69118 [2021-11-19 14:24:20,055 INFO L226 Difference]: Without dead ends: 37322 [2021-11-19 14:24:20,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:24:20,132 INFO L933 BasicCegarLoop]: 4200 mSDtfsCounter, 3941 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 232 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3941 SdHoareTripleChecker+Valid, 7005 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:20,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3941 Valid, 7005 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1240 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-19 14:24:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37322 states. [2021-11-19 14:24:22,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37322 to 37306. [2021-11-19 14:24:22,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37306 states, 25924 states have (on average 1.2711387131615492) internal successors, (32953), 27197 states have internal predecessors, (32953), 8812 states have call successors, (8812), 2572 states have call predecessors, (8812), 2569 states have return successors, (8841), 8487 states have call predecessors, (8841), 8812 states have call successors, (8841) [2021-11-19 14:24:22,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37306 states to 37306 states and 50606 transitions. [2021-11-19 14:24:22,435 INFO L78 Accepts]: Start accepts. Automaton has 37306 states and 50606 transitions. Word has length 336 [2021-11-19 14:24:22,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:22,437 INFO L470 AbstractCegarLoop]: Abstraction has 37306 states and 50606 transitions. [2021-11-19 14:24:22,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 4 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2021-11-19 14:24:22,437 INFO L276 IsEmpty]: Start isEmpty. Operand 37306 states and 50606 transitions. [2021-11-19 14:24:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2021-11-19 14:24:22,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:22,454 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 11, 11, 11, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:22,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:24:22,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:24:22,669 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:24:22,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:22,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1254422128, now seen corresponding path program 1 times [2021-11-19 14:24:22,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:24:22,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374790693] [2021-11-19 14:24:22,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:22,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:24:22,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:24:22,675 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:24:22,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:24:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:25,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 2440 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:24:25,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:24:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-11-19 14:24:26,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:24:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2021-11-19 14:24:27,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:24:27,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374790693] [2021-11-19 14:24:27,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374790693] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:27,256 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:27,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:24:27,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379330598] [2021-11-19 14:24:27,257 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:27,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:24:27,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:24:27,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:24:27,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:24:27,259 INFO L87 Difference]: Start difference. First operand 37306 states and 50606 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 4 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-19 14:24:29,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:24:35,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:35,885 INFO L93 Difference]: Finished difference Result 80071 states and 108561 transitions. [2021-11-19 14:24:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:24:35,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 4 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) Word has length 414 [2021-11-19 14:24:35,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:36,122 INFO L225 Difference]: With dead ends: 80071 [2021-11-19 14:24:36,123 INFO L226 Difference]: Without dead ends: 42782 [2021-11-19 14:24:36,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:24:36,252 INFO L933 BasicCegarLoop]: 3740 mSDtfsCounter, 3933 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3933 SdHoareTripleChecker+Valid, 6744 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:36,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3933 Valid, 6744 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1244 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-19 14:24:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42782 states. [2021-11-19 14:24:38,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42782 to 42766. [2021-11-19 14:24:38,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42766 states, 29844 states have (on average 1.2720479828441227) internal successors, (37963), 31323 states have internal predecessors, (37963), 9956 states have call successors, (9956), 2968 states have call predecessors, (9956), 2965 states have return successors, (9985), 9583 states have call predecessors, (9985), 9956 states have call successors, (9985) [2021-11-19 14:24:39,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42766 states to 42766 states and 57904 transitions. [2021-11-19 14:24:39,252 INFO L78 Accepts]: Start accepts. Automaton has 42766 states and 57904 transitions. Word has length 414 [2021-11-19 14:24:39,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:39,254 INFO L470 AbstractCegarLoop]: Abstraction has 42766 states and 57904 transitions. [2021-11-19 14:24:39,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 4 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-19 14:24:39,254 INFO L276 IsEmpty]: Start isEmpty. Operand 42766 states and 57904 transitions. [2021-11-19 14:24:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2021-11-19 14:24:39,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:39,268 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 11, 11, 11, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:39,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:24:39,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:24:39,493 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:24:39,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:39,493 INFO L85 PathProgramCache]: Analyzing trace with hash -32930283, now seen corresponding path program 1 times [2021-11-19 14:24:39,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:24:39,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137618214] [2021-11-19 14:24:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:39,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:24:39,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:24:39,496 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:24:39,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:24:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:42,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:24:42,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:24:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2021-11-19 14:24:43,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:24:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2021-11-19 14:24:45,780 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:24:45,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137618214] [2021-11-19 14:24:45,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137618214] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:45,780 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:45,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-19 14:24:45,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200044729] [2021-11-19 14:24:45,781 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:45,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 14:24:45,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:24:45,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 14:24:45,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:24:45,783 INFO L87 Difference]: Start difference. First operand 42766 states and 57904 transitions. Second operand has 22 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 8 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (60), 8 states have call predecessors, (60), 8 states have call successors, (60) [2021-11-19 14:24:47,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:24:49,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:26:21,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:21,223 INFO L93 Difference]: Finished difference Result 258257 states and 363449 transitions. [2021-11-19 14:26:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-19 14:26:21,224 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 8 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (60), 8 states have call predecessors, (60), 8 states have call successors, (60) Word has length 418 [2021-11-19 14:26:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:22,501 INFO L225 Difference]: With dead ends: 258257 [2021-11-19 14:26:22,502 INFO L226 Difference]: Without dead ends: 215496 [2021-11-19 14:26:22,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 829 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=851, Invalid=5311, Unknown=0, NotChecked=0, Total=6162 [2021-11-19 14:26:22,946 INFO L933 BasicCegarLoop]: 9768 mSDtfsCounter, 22401 mSDsluCounter, 121910 mSDsCounter, 0 mSdLazyCounter, 23450 mSolverCounterSat, 8634 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22719 SdHoareTripleChecker+Valid, 131678 SdHoareTripleChecker+Invalid, 32086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 8634 IncrementalHoareTripleChecker+Valid, 23450 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:22,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22719 Valid, 131678 Invalid, 32086 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [8634 Valid, 23450 Invalid, 2 Unknown, 0 Unchecked, 78.9s Time] [2021-11-19 14:26:23,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215496 states. [2021-11-19 14:26:30,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215496 to 80538. [2021-11-19 14:26:30,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80538 states, 56078 states have (on average 1.2712115268019544) internal successors, (71287), 58855 states have internal predecessors, (71287), 18825 states have call successors, (18825), 5640 states have call predecessors, (18825), 5634 states have return successors, (18883), 18103 states have call predecessors, (18883), 18825 states have call successors, (18883) [2021-11-19 14:26:31,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80538 states to 80538 states and 108995 transitions. [2021-11-19 14:26:31,132 INFO L78 Accepts]: Start accepts. Automaton has 80538 states and 108995 transitions. Word has length 418 [2021-11-19 14:26:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:31,133 INFO L470 AbstractCegarLoop]: Abstraction has 80538 states and 108995 transitions. [2021-11-19 14:26:31,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 8 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (60), 8 states have call predecessors, (60), 8 states have call successors, (60) [2021-11-19 14:26:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand 80538 states and 108995 transitions. [2021-11-19 14:26:31,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-19 14:26:31,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:31,148 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 10, 10, 10, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:26:31,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 14:26:31,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:26:31,365 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:26:31,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:31,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1613059557, now seen corresponding path program 1 times [2021-11-19 14:26:31,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:26:31,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256501791] [2021-11-19 14:26:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:31,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:26:31,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:26:31,368 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:26:31,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:26:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:33,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:26:33,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-11-19 14:26:34,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:26:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2021-11-19 14:26:36,162 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:26:36,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256501791] [2021-11-19 14:26:36,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256501791] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:26:36,162 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:26:36,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:26:36,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329482888] [2021-11-19 14:26:36,163 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:26:36,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:26:36,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:26:36,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:26:36,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:26:36,166 INFO L87 Difference]: Start difference. First operand 80538 states and 108995 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2021-11-19 14:26:38,310 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 [] [2021-11-19 14:26:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:26:48,124 INFO L93 Difference]: Finished difference Result 148152 states and 200960 transitions. [2021-11-19 14:26:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:26:48,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 431 [2021-11-19 14:26:48,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:26:48,556 INFO L225 Difference]: With dead ends: 148152 [2021-11-19 14:26:48,556 INFO L226 Difference]: Without dead ends: 67541 [2021-11-19 14:26:48,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:26:48,745 INFO L933 BasicCegarLoop]: 4160 mSDtfsCounter, 3957 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 234 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3957 SdHoareTripleChecker+Valid, 6950 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:26:48,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3957 Valid, 6950 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1253 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-11-19 14:26:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67541 states. [2021-11-19 14:26:53,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67541 to 67519. [2021-11-19 14:26:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67519 states, 47018 states have (on average 1.2725126547279766) internal successors, (59831), 49368 states have internal predecessors, (59831), 15952 states have call successors, (15952), 4551 states have call predecessors, (15952), 4548 states have return successors, (15993), 15355 states have call predecessors, (15993), 15952 states have call successors, (15993) [2021-11-19 14:26:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67519 states to 67519 states and 91776 transitions. [2021-11-19 14:26:53,707 INFO L78 Accepts]: Start accepts. Automaton has 67519 states and 91776 transitions. Word has length 431 [2021-11-19 14:26:53,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:26:53,708 INFO L470 AbstractCegarLoop]: Abstraction has 67519 states and 91776 transitions. [2021-11-19 14:26:53,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2021-11-19 14:26:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 67519 states and 91776 transitions. [2021-11-19 14:26:53,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2021-11-19 14:26:53,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:26:53,720 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 14:26:53,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:26:53,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:26:53,945 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:26:53,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:26:53,945 INFO L85 PathProgramCache]: Analyzing trace with hash 682713076, now seen corresponding path program 1 times [2021-11-19 14:26:53,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:26:53,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965045461] [2021-11-19 14:26:53,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:26:53,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:26:53,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:26:53,949 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:26:53,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0036bf-2fe6-4b4c-911a-49622f4135b2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:26:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:26:57,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 2927 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:26:57,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:26:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2021-11-19 14:26:58,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:27:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1026 trivial. 0 not checked. [2021-11-19 14:27:00,039 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:27:00,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965045461] [2021-11-19 14:27:00,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965045461] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:27:00,039 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:27:00,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:27:00,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008647165] [2021-11-19 14:27:00,040 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:27:00,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:27:00,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:27:00,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:27:00,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:27:00,041 INFO L87 Difference]: Start difference. First operand 67519 states and 91776 transitions. Second operand has 8 states, 8 states have (on average 36.0) internal successors, (288), 8 states have internal predecessors, (288), 2 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2021-11-19 14:27:02,257 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 []