./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5ed3d5c0aeaf7c032926a2347a2cd8f6e5404a73032a43856ee00d265d816a1f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:18:06,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:18:06,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:18:06,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:18:06,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:18:06,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:18:06,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:18:06,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:18:06,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:18:06,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:18:06,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:18:06,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:18:06,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:18:06,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:18:06,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:18:06,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:18:06,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:18:06,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:18:06,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:18:06,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:18:06,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:18:06,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:18:06,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:18:06,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:18:06,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:18:06,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:18:06,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:18:06,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:18:06,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:18:06,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:18:06,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:18:06,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:18:06,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:18:06,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:18:06,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:18:06,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:18:06,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:18:06,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:18:06,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:18:06,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:18:06,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:18:06,125 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:18:06,171 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:18:06,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:18:06,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:18:06,173 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:18:06,173 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:18:06,173 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:18:06,174 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:18:06,174 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:18:06,180 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:18:06,181 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:18:06,182 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:18:06,182 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:18:06,182 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:18:06,182 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:18:06,183 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:18:06,183 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:18:06,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:18:06,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:18:06,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:18:06,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:18:06,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:18:06,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:18:06,185 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:18:06,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:18:06,186 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:18:06,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:18:06,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:18:06,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:18:06,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:18:06,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:18:06,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:18:06,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:18:06,189 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:18:06,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:18:06,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:18:06,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:18:06,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:18:06,190 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_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ed3d5c0aeaf7c032926a2347a2cd8f6e5404a73032a43856ee00d265d816a1f [2021-11-12 23:18:06,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:18:06,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:18:06,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:18:06,544 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:18:06,545 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:18:06,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-12 23:18:06,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/data/d793a95ad/77aa2c4851644d659c0632f2117db993/FLAGea193ae29 [2021-11-12 23:18:07,535 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:18:07,536 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-12 23:18:07,581 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/data/d793a95ad/77aa2c4851644d659c0632f2117db993/FLAGea193ae29 [2021-11-12 23:18:07,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/data/d793a95ad/77aa2c4851644d659c0632f2117db993 [2021-11-12 23:18:07,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:18:07,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:18:07,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:18:07,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:18:07,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:18:07,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:18:07" (1/1) ... [2021-11-12 23:18:08,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c84ca27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:08, skipping insertion in model container [2021-11-12 23:18:08,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:18:07" (1/1) ... [2021-11-12 23:18:08,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:18:08,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:18:10,035 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:18:10,037 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:18:10,979 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[310122,310135] [2021-11-12 23:18:10,984 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[310267,310280] [2021-11-12 23:18:11,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:18:11,077 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:18:11,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@75413160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:11, skipping insertion in model container [2021-11-12 23:18:11,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:18:11,078 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:18:11,081 INFO L158 Benchmark]: Toolchain (without parser) took 3097.90ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 64.5MB in the beginning and 95.3MB in the end (delta: -30.7MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2021-11-12 23:18:11,081 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:18:11,083 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3082.63ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 64.3MB in the beginning and 95.3MB in the end (delta: -31.0MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2021-11-12 23:18:11,085 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3082.63ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 64.3MB in the beginning and 95.3MB in the end (delta: -31.0MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6095]: 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_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5ed3d5c0aeaf7c032926a2347a2cd8f6e5404a73032a43856ee00d265d816a1f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:18:13,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:18:13,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:18:13,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:18:13,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:18:13,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:18:13,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:18:13,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:18:13,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:18:13,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:18:13,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:18:13,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:18:13,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:18:13,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:18:13,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:18:13,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:18:13,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:18:13,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:18:13,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:18:13,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:18:13,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:18:13,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:18:13,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:18:13,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:18:13,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:18:13,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:18:13,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:18:13,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:18:13,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:18:13,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:18:13,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:18:13,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:18:13,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:18:13,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:18:13,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:18:13,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:18:13,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:18:13,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:18:13,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:18:13,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:18:13,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:18:13,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:18:13,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:18:13,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:18:13,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:18:13,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:18:13,522 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:18:13,522 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:18:13,522 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:18:13,523 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:18:13,523 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:18:13,523 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:18:13,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:18:13,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:18:13,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:18:13,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:18:13,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:18:13,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:18:13,525 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:18:13,525 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:18:13,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:18:13,525 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:18:13,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:18:13,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:18:13,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:18:13,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:18:13,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:18:13,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:18:13,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:18:13,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:18:13,527 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:18:13,527 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:18:13,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:18:13,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:18:13,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:18:13,528 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_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ed3d5c0aeaf7c032926a2347a2cd8f6e5404a73032a43856ee00d265d816a1f [2021-11-12 23:18:13,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:18:13,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:18:13,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:18:13,948 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:18:13,955 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:18:13,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-12 23:18:14,036 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/data/7e22b331b/c7b69d7bcc874afebd3e239f89082217/FLAG518801fab [2021-11-12 23:18:14,997 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:18:14,998 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-12 23:18:15,074 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/data/7e22b331b/c7b69d7bcc874afebd3e239f89082217/FLAG518801fab [2021-11-12 23:18:15,472 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/data/7e22b331b/c7b69d7bcc874afebd3e239f89082217 [2021-11-12 23:18:15,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:18:15,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:18:15,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:18:15,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:18:15,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:18:15,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:18:15" (1/1) ... [2021-11-12 23:18:15,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@132d6365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:15, skipping insertion in model container [2021-11-12 23:18:15,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:18:15" (1/1) ... [2021-11-12 23:18:15,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:18:15,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:18:18,670 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[310122,310135] [2021-11-12 23:18:18,673 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[310267,310280] [2021-11-12 23:18:18,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:18:18,739 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:18:18,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:18:19,119 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[310122,310135] [2021-11-12 23:18:19,120 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[310267,310280] [2021-11-12 23:18:19,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:18:19,159 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:18:19,628 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[310122,310135] [2021-11-12 23:18:19,628 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[310267,310280] [2021-11-12 23:18:19,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:18:19,799 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:18:19,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:19 WrapperNode [2021-11-12 23:18:19,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:18:19,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:18:19,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:18:19,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:18:19,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:19" (1/1) ... [2021-11-12 23:18:19,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:19" (1/1) ... [2021-11-12 23:18:20,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:18:20,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:18:20,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:18:20,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:18:20,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:19" (1/1) ... [2021-11-12 23:18:20,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:19" (1/1) ... [2021-11-12 23:18:20,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:19" (1/1) ... [2021-11-12 23:18:20,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:19" (1/1) ... [2021-11-12 23:18:20,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:19" (1/1) ... [2021-11-12 23:18:20,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:19" (1/1) ... [2021-11-12 23:18:20,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:19" (1/1) ... [2021-11-12 23:18:20,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:18:20,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:18:20,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:18:20,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:18:20,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:19" (1/1) ... [2021-11-12 23:18:20,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:18:20,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:18:20,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:18:20,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:18:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_92 [2021-11-12 23:18:20,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_92 [2021-11-12 23:18:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-12 23:18:20,425 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-12 23:18:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:18:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:18:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-12 23:18:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-12 23:18:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 23:18:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 23:18:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:18:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:18:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 23:18:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 23:18:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-12 23:18:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-12 23:18:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-12 23:18:20,428 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-12 23:18:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2021-11-12 23:18:20,428 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2021-11-12 23:18:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_poll [2021-11-12 23:18:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_poll [2021-11-12 23:18:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-12 23:18:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-12 23:18:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:18:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:18:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-12 23:18:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-12 23:18:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-12 23:18:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-12 23:18:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-12 23:18:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-12 23:18:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:18:20,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:18:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-12 23:18:20,432 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-12 23:18:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:18:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_stop [2021-11-12 23:18:20,433 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_stop [2021-11-12 23:18:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:18:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:18:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:18:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 23:18:20,434 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 23:18:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 23:18:20,434 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 23:18:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:18:20,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:18:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_set_filter_mode [2021-11-12 23:18:20,436 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_set_filter_mode [2021-11-12 23:18:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write_1bit [2021-11-12 23:18:20,437 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write_1bit [2021-11-12 23:18:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2021-11-12 23:18:20,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2021-11-12 23:18:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 23:18:20,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 23:18:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:18:20,439 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:18:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-12 23:18:20,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-12 23:18:20,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 23:18:20,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 23:18:20,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 23:18:20,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 23:18:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-12 23:18:20,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-12 23:18:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-12 23:18:20,441 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-12 23:18:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-12 23:18:20,442 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-12 23:18:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read_1bit [2021-11-12 23:18:20,442 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read_1bit [2021-11-12 23:18:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reset_prepare [2021-11-12 23:18:20,442 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reset_prepare [2021-11-12 23:18:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:18:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 23:18:20,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 23:18:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 23:18:20,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 23:18:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffer [2021-11-12 23:18:20,444 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffer [2021-11-12 23:18:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:18:20,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:18:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 23:18:20,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 23:18:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:18:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:18:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:18:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:18:20,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:18:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:18:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-12 23:18:20,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-12 23:18:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-12 23:18:20,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-12 23:18:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-12 23:18:20,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-12 23:18:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:18:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:18:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-12 23:18:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-12 23:18:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 23:18:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 23:18:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:18:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-12 23:18:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-12 23:18:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:18:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:18:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:18:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reuse_skb [2021-11-12 23:18:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reuse_skb [2021-11-12 23:18:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_open [2021-11-12 23:18:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_open [2021-11-12 23:18:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:18:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:18:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:18:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:18:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:18:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:18:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:18:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-12 23:18:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-12 23:18:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_uli526x_board_info [2021-11-12 23:18:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_uli526x_board_info [2021-11-12 23:18:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-12 23:18:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-12 23:18:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-12 23:18:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-12 23:18:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-12 23:18:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-12 23:18:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 23:18:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 23:18:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-12 23:18:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-12 23:18:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure send_filter_frame [2021-11-12 23:18:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure send_filter_frame [2021-11-12 23:18:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2021-11-12 23:18:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2021-11-12 23:18:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-12 23:18:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-12 23:18:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:18:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-12 23:18:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-12 23:18:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:18:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-12 23:18:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-12 23:18:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:18:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:18:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:18:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:18:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:18:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 23:18:20,457 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 23:18:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:18:20,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:18:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_resume [2021-11-12 23:18:20,457 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_resume [2021-11-12 23:18:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 23:18:20,458 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 23:18:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_interrupt [2021-11-12 23:18:20,458 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_interrupt [2021-11-12 23:18:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2021-11-12 23:18:20,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2021-11-12 23:18:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_remove_one [2021-11-12 23:18:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_remove_one [2021-11-12 23:18:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure update_cr6 [2021-11-12 23:18:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure update_cr6 [2021-11-12 23:18:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:18:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:18:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:18:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:18:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:18:20,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:18:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure srom_clk_write [2021-11-12 23:18:20,460 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_clk_write [2021-11-12 23:18:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_free_rxbuffer [2021-11-12 23:18:20,461 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_free_rxbuffer [2021-11-12 23:18:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:18:20,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:18:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-12 23:18:20,461 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-12 23:18:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-12 23:18:20,462 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-12 23:18:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_init [2021-11-12 23:18:20,462 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_init [2021-11-12 23:18:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:18:20,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:18:29,433 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:19:08,950 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 23:19:09,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:19:09,027 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:19:09,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:19:09 BoogieIcfgContainer [2021-11-12 23:19:09,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:19:09,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:19:09,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:19:09,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:19:09,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:18:15" (1/3) ... [2021-11-12 23:19:09,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab08fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:19:09, skipping insertion in model container [2021-11-12 23:19:09,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:18:19" (2/3) ... [2021-11-12 23:19:09,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab08fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:19:09, skipping insertion in model container [2021-11-12 23:19:09,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:19:09" (3/3) ... [2021-11-12 23:19:09,044 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14__complex_emg__linux-alloc-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-12 23:19:09,050 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:19:09,050 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:19:09,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:19:09,115 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:19:09,116 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:19:09,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 1507 states, 1037 states have (on average 1.296046287367406) internal successors, (1344), 1058 states have internal predecessors, (1344), 391 states have call successors, (391), 79 states have call predecessors, (391), 78 states have return successors, (385), 379 states have call predecessors, (385), 385 states have call successors, (385) [2021-11-12 23:19:09,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-12 23:19:09,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:09,282 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 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] [2021-11-12 23:19:09,282 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:19:09,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:09,291 INFO L85 PathProgramCache]: Analyzing trace with hash -385026717, now seen corresponding path program 1 times [2021-11-12 23:19:09,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:09,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638387251] [2021-11-12 23:19:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:09,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:09,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:09,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:09,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:19:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:12,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:19:12,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-11-12 23:19:13,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2021-11-12 23:19:13,837 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:13,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638387251] [2021-11-12 23:19:13,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638387251] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:13,842 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:13,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:19:13,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903602554] [2021-11-12 23:19:13,846 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:13,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:19:13,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:13,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:19:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:19:13,894 INFO L87 Difference]: Start difference. First operand has 1507 states, 1037 states have (on average 1.296046287367406) internal successors, (1344), 1058 states have internal predecessors, (1344), 391 states have call successors, (391), 79 states have call predecessors, (391), 78 states have return successors, (385), 379 states have call predecessors, (385), 385 states have call successors, (385) Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-12 23:19:16,173 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 [] [2021-11-12 23:19:20,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:20,146 INFO L93 Difference]: Finished difference Result 5837 states and 8318 transitions. [2021-11-12 23:19:20,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:19:20,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 185 [2021-11-12 23:19:20,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:20,210 INFO L225 Difference]: With dead ends: 5837 [2021-11-12 23:19:20,211 INFO L226 Difference]: Without dead ends: 4226 [2021-11-12 23:19:20,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:19:20,231 INFO L933 BasicCegarLoop]: 2858 mSDtfsCounter, 4081 mSDsluCounter, 5113 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5377.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4081 SdHoareTripleChecker+Valid, 7971 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.04ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5795.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:20,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4081 Valid, 7971 Invalid, 789 Unknown, 0 Unchecked, 53.04ms Time], IncrementalHoareTripleChecker [16 Valid, 772 Invalid, 1 Unknown, 0 Unchecked, 5795.87ms Time] [2021-11-12 23:19:20,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2021-11-12 23:19:20,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4218. [2021-11-12 23:19:20,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4218 states, 2952 states have (on average 1.2964092140921408) internal successors, (3827), 3018 states have internal predecessors, (3827), 1041 states have call successors, (1041), 228 states have call predecessors, (1041), 224 states have return successors, (1047), 1013 states have call predecessors, (1047), 1041 states have call successors, (1047) [2021-11-12 23:19:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4218 states to 4218 states and 5915 transitions. [2021-11-12 23:19:20,634 INFO L78 Accepts]: Start accepts. Automaton has 4218 states and 5915 transitions. Word has length 185 [2021-11-12 23:19:20,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:20,636 INFO L470 AbstractCegarLoop]: Abstraction has 4218 states and 5915 transitions. [2021-11-12 23:19:20,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-12 23:19:20,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4218 states and 5915 transitions. [2021-11-12 23:19:20,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-12 23:19:20,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:20,646 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:20,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:20,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:20,868 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:19:20,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:20,869 INFO L85 PathProgramCache]: Analyzing trace with hash 208038063, now seen corresponding path program 1 times [2021-11-12 23:19:20,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:20,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424101757] [2021-11-12 23:19:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:20,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:20,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:20,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:20,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:19:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:23,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 1687 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:19:23,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-12 23:19:24,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-11-12 23:19:25,052 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:25,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424101757] [2021-11-12 23:19:25,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424101757] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:25,053 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:25,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:19:25,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696511325] [2021-11-12 23:19:25,053 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:25,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:19:25,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:25,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:19:25,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:19:25,058 INFO L87 Difference]: Start difference. First operand 4218 states and 5915 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-12 23:19:27,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:19:27,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:27,943 INFO L93 Difference]: Finished difference Result 12172 states and 17072 transitions. [2021-11-12 23:19:27,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:19:27,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 197 [2021-11-12 23:19:27,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:28,015 INFO L225 Difference]: With dead ends: 12172 [2021-11-12 23:19:28,015 INFO L226 Difference]: Without dead ends: 7977 [2021-11-12 23:19:28,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:19:28,040 INFO L933 BasicCegarLoop]: 2371 mSDtfsCounter, 1795 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2394.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 4339 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.61ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2459.92ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:28,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1795 Valid, 4339 Invalid, 53 Unknown, 0 Unchecked, 12.61ms Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 2459.92ms Time] [2021-11-12 23:19:28,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7977 states. [2021-11-12 23:19:28,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7977 to 7971. [2021-11-12 23:19:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7971 states, 5553 states have (on average 1.2962362686835944) internal successors, (7198), 5680 states have internal predecessors, (7198), 1979 states have call successors, (1979), 447 states have call predecessors, (1979), 438 states have return successors, (1992), 1918 states have call predecessors, (1992), 1979 states have call successors, (1992) [2021-11-12 23:19:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7971 states to 7971 states and 11169 transitions. [2021-11-12 23:19:28,551 INFO L78 Accepts]: Start accepts. Automaton has 7971 states and 11169 transitions. Word has length 197 [2021-11-12 23:19:28,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:28,552 INFO L470 AbstractCegarLoop]: Abstraction has 7971 states and 11169 transitions. [2021-11-12 23:19:28,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-12 23:19:28,552 INFO L276 IsEmpty]: Start isEmpty. Operand 7971 states and 11169 transitions. [2021-11-12 23:19:28,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-12 23:19:28,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:28,559 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:28,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:28,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:28,780 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:19:28,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:28,780 INFO L85 PathProgramCache]: Analyzing trace with hash -349541086, now seen corresponding path program 1 times [2021-11-12 23:19:28,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:28,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6554404] [2021-11-12 23:19:28,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:28,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:28,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:28,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:28,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:19:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:31,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:19:31,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-12 23:19:32,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-11-12 23:19:32,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:32,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6554404] [2021-11-12 23:19:32,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6554404] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:32,988 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:32,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:19:32,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45267979] [2021-11-12 23:19:32,989 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:32,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:19:32,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:32,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:19:32,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:19:32,990 INFO L87 Difference]: Start difference. First operand 7971 states and 11169 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-12 23:19:35,191 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:19:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:40,242 INFO L93 Difference]: Finished difference Result 25766 states and 36065 transitions. [2021-11-12 23:19:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:19:40,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 196 [2021-11-12 23:19:40,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:40,498 INFO L225 Difference]: With dead ends: 25766 [2021-11-12 23:19:40,502 INFO L226 Difference]: Without dead ends: 17818 [2021-11-12 23:19:40,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:19:40,548 INFO L933 BasicCegarLoop]: 3268 mSDtfsCounter, 3814 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 380 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6041.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3814 SdHoareTripleChecker+Valid, 5969 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.69ms SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6584.72ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:40,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3814 Valid, 5969 Invalid, 1182 Unknown, 0 Unchecked, 29.69ms Time], IncrementalHoareTripleChecker [380 Valid, 801 Invalid, 1 Unknown, 0 Unchecked, 6584.72ms Time] [2021-11-12 23:19:40,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17818 states. [2021-11-12 23:19:41,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17818 to 17802. [2021-11-12 23:19:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17802 states, 12545 states have (on average 1.3033878039059386) internal successors, (16351), 12785 states have internal predecessors, (16351), 4224 states have call successors, (4224), 1050 states have call predecessors, (4224), 1032 states have return successors, (4237), 4118 states have call predecessors, (4237), 4224 states have call successors, (4237) [2021-11-12 23:19:41,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17802 states to 17802 states and 24812 transitions. [2021-11-12 23:19:41,657 INFO L78 Accepts]: Start accepts. Automaton has 17802 states and 24812 transitions. Word has length 196 [2021-11-12 23:19:41,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:41,658 INFO L470 AbstractCegarLoop]: Abstraction has 17802 states and 24812 transitions. [2021-11-12 23:19:41,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-12 23:19:41,659 INFO L276 IsEmpty]: Start isEmpty. Operand 17802 states and 24812 transitions. [2021-11-12 23:19:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-12 23:19:41,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:41,677 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 9, 9, 9, 9, 9, 9, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:41,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:41,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:41,900 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:19:41,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:41,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1314541923, now seen corresponding path program 1 times [2021-11-12 23:19:41,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:41,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122025287] [2021-11-12 23:19:41,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:41,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:41,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:41,905 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:41,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:19:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:44,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1911 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:19:44,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-12 23:19:46,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-11-12 23:19:46,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:46,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122025287] [2021-11-12 23:19:46,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122025287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:46,968 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:46,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-12 23:19:46,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599464619] [2021-11-12 23:19:46,969 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:46,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:19:46,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:19:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:19:46,970 INFO L87 Difference]: Start difference. First operand 17802 states and 24812 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:19:48,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:48,342 INFO L93 Difference]: Finished difference Result 53360 states and 75044 transitions. [2021-11-12 23:19:48,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:19:48,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 293 [2021-11-12 23:19:48,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:48,526 INFO L225 Difference]: With dead ends: 53360 [2021-11-12 23:19:48,526 INFO L226 Difference]: Without dead ends: 35581 [2021-11-12 23:19:48,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:19:48,626 INFO L933 BasicCegarLoop]: 3164 mSDtfsCounter, 1978 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 151.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.77ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 171.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:48,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1978 Valid, 5126 Invalid, 88 Unknown, 0 Unchecked, 13.77ms Time], IncrementalHoareTripleChecker [43 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 171.96ms Time] [2021-11-12 23:19:48,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35581 states. [2021-11-12 23:19:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35581 to 35579. [2021-11-12 23:19:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35579 states, 25075 states have (on average 1.2914855433698904) internal successors, (32384), 25555 states have internal predecessors, (32384), 8439 states have call successors, (8439), 2100 states have call predecessors, (8439), 2064 states have return successors, (8740), 8227 states have call predecessors, (8740), 8439 states have call successors, (8740) [2021-11-12 23:19:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35579 states to 35579 states and 49563 transitions. [2021-11-12 23:19:50,909 INFO L78 Accepts]: Start accepts. Automaton has 35579 states and 49563 transitions. Word has length 293 [2021-11-12 23:19:50,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:50,911 INFO L470 AbstractCegarLoop]: Abstraction has 35579 states and 49563 transitions. [2021-11-12 23:19:50,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:19:50,911 INFO L276 IsEmpty]: Start isEmpty. Operand 35579 states and 49563 transitions. [2021-11-12 23:19:51,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-12 23:19:51,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:51,129 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 9, 9, 9, 9, 9, 9, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:51,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:51,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:51,344 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:19:51,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:51,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1224481633, now seen corresponding path program 1 times [2021-11-12 23:19:51,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:51,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98174244] [2021-11-12 23:19:51,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:51,347 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:51,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:51,349 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:51,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:19:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:54,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 1911 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:19:54,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-12 23:19:55,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-11-12 23:19:56,673 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:56,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98174244] [2021-11-12 23:19:56,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98174244] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:56,673 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:56,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-12 23:19:56,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196493926] [2021-11-12 23:19:56,674 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:56,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:19:56,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:56,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:19:56,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:19:56,676 INFO L87 Difference]: Start difference. First operand 35579 states and 49563 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:19:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:57,453 INFO L93 Difference]: Finished difference Result 53358 states and 74040 transitions. [2021-11-12 23:19:57,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:19:57,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 293 [2021-11-12 23:19:57,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:57,547 INFO L225 Difference]: With dead ends: 53358 [2021-11-12 23:19:57,547 INFO L226 Difference]: Without dead ends: 17802 [2021-11-12 23:19:57,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:19:57,681 INFO L933 BasicCegarLoop]: 2015 mSDtfsCounter, 1957 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.30ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:57,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 2015 Invalid, 1 Unknown, 0 Unchecked, 3.96ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2.30ms Time] [2021-11-12 23:19:57,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17802 states. [2021-11-12 23:19:58,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17802 to 17802. [2021-11-12 23:19:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17802 states, 12545 states have (on average 1.277799920286967) internal successors, (16030), 12785 states have internal predecessors, (16030), 4224 states have call successors, (4224), 1050 states have call predecessors, (4224), 1032 states have return successors, (4237), 4118 states have call predecessors, (4237), 4224 states have call successors, (4237) [2021-11-12 23:19:58,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17802 states to 17802 states and 24491 transitions. [2021-11-12 23:19:58,855 INFO L78 Accepts]: Start accepts. Automaton has 17802 states and 24491 transitions. Word has length 293 [2021-11-12 23:19:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:58,856 INFO L470 AbstractCegarLoop]: Abstraction has 17802 states and 24491 transitions. [2021-11-12 23:19:58,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:19:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 17802 states and 24491 transitions. [2021-11-12 23:19:58,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-12 23:19:58,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:58,868 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 9, 9, 9, 9, 9, 9, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:58,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:59,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:59,092 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:19:59,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:59,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1914313123, now seen corresponding path program 1 times [2021-11-12 23:19:59,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:59,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611539750] [2021-11-12 23:19:59,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:59,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:59,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:59,096 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:59,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:20:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:01,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:20:01,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-12 23:20:03,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-11-12 23:20:04,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:04,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611539750] [2021-11-12 23:20:04,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611539750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:04,100 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:04,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-12 23:20:04,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827455274] [2021-11-12 23:20:04,101 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:04,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:20:04,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:04,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:20:04,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:20:04,102 INFO L87 Difference]: Start difference. First operand 17802 states and 24491 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:20:04,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:04,791 INFO L93 Difference]: Finished difference Result 35581 states and 48950 transitions. [2021-11-12 23:20:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:20:04,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 293 [2021-11-12 23:20:04,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:04,881 INFO L225 Difference]: With dead ends: 35581 [2021-11-12 23:20:04,882 INFO L226 Difference]: Without dead ends: 17802 [2021-11-12 23:20:04,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:20:04,958 INFO L933 BasicCegarLoop]: 2014 mSDtfsCounter, 1955 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.30ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:04,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1955 Valid, 2014 Invalid, 1 Unknown, 0 Unchecked, 3.81ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2.30ms Time] [2021-11-12 23:20:04,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17802 states. [2021-11-12 23:20:06,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17802 to 17802. [2021-11-12 23:20:06,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17802 states, 12545 states have (on average 1.2763650856915105) internal successors, (16012), 12785 states have internal predecessors, (16012), 4224 states have call successors, (4224), 1050 states have call predecessors, (4224), 1032 states have return successors, (4237), 4118 states have call predecessors, (4237), 4224 states have call successors, (4237) [2021-11-12 23:20:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17802 states to 17802 states and 24473 transitions. [2021-11-12 23:20:06,182 INFO L78 Accepts]: Start accepts. Automaton has 17802 states and 24473 transitions. Word has length 293 [2021-11-12 23:20:06,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:06,183 INFO L470 AbstractCegarLoop]: Abstraction has 17802 states and 24473 transitions. [2021-11-12 23:20:06,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 3 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-12 23:20:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 17802 states and 24473 transitions. [2021-11-12 23:20:06,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-12 23:20:06,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:06,196 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 9, 9, 9, 9, 9, 9, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:06,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 23:20:06,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:06,414 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:20:06,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:06,415 INFO L85 PathProgramCache]: Analyzing trace with hash 972928223, now seen corresponding path program 1 times [2021-11-12 23:20:06,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:06,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696928489] [2021-11-12 23:20:06,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:06,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:06,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:06,420 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:06,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:20:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:09,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:20:09,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-12 23:20:10,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-11-12 23:20:11,720 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:11,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696928489] [2021-11-12 23:20:11,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696928489] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:11,721 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:11,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-12 23:20:11,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528860505] [2021-11-12 23:20:11,722 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:11,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:20:11,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:11,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:20:11,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:20:11,724 INFO L87 Difference]: Start difference. First operand 17802 states and 24473 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 4 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2021-11-12 23:20:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:12,589 INFO L93 Difference]: Finished difference Result 35563 states and 48896 transitions. [2021-11-12 23:20:12,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:20:12,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 4 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) Word has length 293 [2021-11-12 23:20:12,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:12,676 INFO L225 Difference]: With dead ends: 35563 [2021-11-12 23:20:12,676 INFO L226 Difference]: Without dead ends: 17784 [2021-11-12 23:20:12,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:20:12,744 INFO L933 BasicCegarLoop]: 2006 mSDtfsCounter, 1958 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.75ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.33ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:12,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1958 Valid, 2006 Invalid, 20 Unknown, 0 Unchecked, 3.75ms Time], IncrementalHoareTripleChecker [16 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 31.33ms Time] [2021-11-12 23:20:12,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17784 states. [2021-11-12 23:20:13,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17784 to 17784. [2021-11-12 23:20:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17784 states, 12527 states have (on average 1.2710146084457572) internal successors, (15922), 12767 states have internal predecessors, (15922), 4224 states have call successors, (4224), 1050 states have call predecessors, (4224), 1032 states have return successors, (4237), 4118 states have call predecessors, (4237), 4224 states have call successors, (4237) [2021-11-12 23:20:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17784 states to 17784 states and 24383 transitions. [2021-11-12 23:20:14,037 INFO L78 Accepts]: Start accepts. Automaton has 17784 states and 24383 transitions. Word has length 293 [2021-11-12 23:20:14,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:14,038 INFO L470 AbstractCegarLoop]: Abstraction has 17784 states and 24383 transitions. [2021-11-12 23:20:14,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 4 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2021-11-12 23:20:14,038 INFO L276 IsEmpty]: Start isEmpty. Operand 17784 states and 24383 transitions. [2021-11-12 23:20:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-12 23:20:14,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:14,052 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 9, 9, 9, 9, 9, 9, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:14,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:14,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:14,277 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:20:14,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash -618240793, now seen corresponding path program 1 times [2021-11-12 23:20:14,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:14,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934139294] [2021-11-12 23:20:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:14,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:14,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:14,282 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:14,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:20:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:17,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:20:17,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2021-11-12 23:20:17,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-11-12 23:20:18,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:18,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934139294] [2021-11-12 23:20:18,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934139294] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:18,828 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:18,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:20:18,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422445505] [2021-11-12 23:20:18,828 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:18,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:20:18,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:18,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:20:18,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:20:18,831 INFO L87 Difference]: Start difference. First operand 17784 states and 24383 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 4 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) [2021-11-12 23:20:21,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:20:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:25,796 INFO L93 Difference]: Finished difference Result 47230 states and 64616 transitions. [2021-11-12 23:20:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:20:25,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 4 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) Word has length 296 [2021-11-12 23:20:25,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:25,895 INFO L225 Difference]: With dead ends: 47230 [2021-11-12 23:20:25,895 INFO L226 Difference]: Without dead ends: 29469 [2021-11-12 23:20:25,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 588 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:20:25,957 INFO L933 BasicCegarLoop]: 3474 mSDtfsCounter, 3230 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5096.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3230 SdHoareTripleChecker+Valid, 6210 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.30ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5500.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:25,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3230 Valid, 6210 Invalid, 858 Unknown, 0 Unchecked, 20.30ms Time], IncrementalHoareTripleChecker [36 Valid, 821 Invalid, 1 Unknown, 0 Unchecked, 5500.77ms Time] [2021-11-12 23:20:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29469 states. [2021-11-12 23:20:27,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29469 to 29453. [2021-11-12 23:20:27,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29453 states, 20770 states have (on average 1.2729898892633607) internal successors, (26440), 21142 states have internal predecessors, (26440), 6854 states have call successors, (6854), 1846 states have call predecessors, (6854), 1828 states have return successors, (6867), 6706 states have call predecessors, (6867), 6854 states have call successors, (6867) [2021-11-12 23:20:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29453 states to 29453 states and 40161 transitions. [2021-11-12 23:20:27,860 INFO L78 Accepts]: Start accepts. Automaton has 29453 states and 40161 transitions. Word has length 296 [2021-11-12 23:20:27,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:27,861 INFO L470 AbstractCegarLoop]: Abstraction has 29453 states and 40161 transitions. [2021-11-12 23:20:27,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 4 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) [2021-11-12 23:20:27,862 INFO L276 IsEmpty]: Start isEmpty. Operand 29453 states and 40161 transitions. [2021-11-12 23:20:27,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-11-12 23:20:27,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:27,885 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:27,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:28,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:28,100 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:20:28,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:28,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1470078584, now seen corresponding path program 1 times [2021-11-12 23:20:28,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:28,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965031885] [2021-11-12 23:20:28,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:28,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:28,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:28,104 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:28,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:20:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:31,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 2273 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:20:31,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-11-12 23:20:32,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2021-11-12 23:20:33,709 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:33,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965031885] [2021-11-12 23:20:33,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965031885] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:33,709 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:33,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:20:33,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799129980] [2021-11-12 23:20:33,710 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:33,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:20:33,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:33,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:20:33,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:20:33,711 INFO L87 Difference]: Start difference. First operand 29453 states and 40161 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 4 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) [2021-11-12 23:20:35,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:20:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:42,389 INFO L93 Difference]: Finished difference Result 96597 states and 130378 transitions. [2021-11-12 23:20:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:20:42,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 4 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) Word has length 401 [2021-11-12 23:20:42,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:42,633 INFO L225 Difference]: With dead ends: 96597 [2021-11-12 23:20:42,633 INFO L226 Difference]: Without dead ends: 67167 [2021-11-12 23:20:42,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 798 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:20:42,744 INFO L933 BasicCegarLoop]: 2876 mSDtfsCounter, 4647 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 666 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5404.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4647 SdHoareTripleChecker+Valid, 5904 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.57ms SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5931.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:42,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4647 Valid, 5904 Invalid, 1317 Unknown, 0 Unchecked, 22.57ms Time], IncrementalHoareTripleChecker [666 Valid, 650 Invalid, 1 Unknown, 0 Unchecked, 5931.91ms Time] [2021-11-12 23:20:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67167 states. [2021-11-12 23:20:46,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67167 to 67079. [2021-11-12 23:20:46,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67079 states, 47956 states have (on average 1.2624906163983651) internal successors, (60544), 48896 states have internal predecessors, (60544), 14744 states have call successors, (14744), 4444 states have call predecessors, (14744), 4378 states have return successors, (14785), 14282 states have call predecessors, (14785), 14744 states have call successors, (14785) [2021-11-12 23:20:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67079 states to 67079 states and 90073 transitions. [2021-11-12 23:20:46,993 INFO L78 Accepts]: Start accepts. Automaton has 67079 states and 90073 transitions. Word has length 401 [2021-11-12 23:20:46,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:46,993 INFO L470 AbstractCegarLoop]: Abstraction has 67079 states and 90073 transitions. [2021-11-12 23:20:46,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 4 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) [2021-11-12 23:20:46,994 INFO L276 IsEmpty]: Start isEmpty. Operand 67079 states and 90073 transitions. [2021-11-12 23:20:47,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-12 23:20:47,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:47,019 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:47,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:47,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:47,236 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:20:47,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:47,237 INFO L85 PathProgramCache]: Analyzing trace with hash -694936784, now seen corresponding path program 1 times [2021-11-12 23:20:47,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:47,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441031700] [2021-11-12 23:20:47,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:47,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:47,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:47,241 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:47,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:20:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:50,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 2053 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:20:50,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-11-12 23:20:51,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 794 trivial. 0 not checked. [2021-11-12 23:20:52,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:52,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441031700] [2021-11-12 23:20:52,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441031700] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:52,336 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:52,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:20:52,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953347046] [2021-11-12 23:20:52,337 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:52,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:20:52,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:52,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:20:52,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:20:52,339 INFO L87 Difference]: Start difference. First operand 67079 states and 90073 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 4 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2021-11-12 23:20:54,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:21:02,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:02,453 INFO L93 Difference]: Finished difference Result 153747 states and 206500 transitions. [2021-11-12 23:21:02,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:21:02,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 4 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 375 [2021-11-12 23:21:02,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:02,754 INFO L225 Difference]: With dead ends: 153747 [2021-11-12 23:21:02,754 INFO L226 Difference]: Without dead ends: 86691 [2021-11-12 23:21:02,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:21:02,912 INFO L933 BasicCegarLoop]: 3510 mSDtfsCounter, 3245 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 254 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5282.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3245 SdHoareTripleChecker+Valid, 6035 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.47ms SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5739.80ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:02,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3245 Valid, 6035 Invalid, 1073 Unknown, 0 Unchecked, 20.47ms Time], IncrementalHoareTripleChecker [254 Valid, 818 Invalid, 1 Unknown, 0 Unchecked, 5739.80ms Time] [2021-11-12 23:21:02,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86691 states. [2021-11-12 23:21:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86691 to 86651. [2021-11-12 23:21:07,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86651 states, 62302 states have (on average 1.2646785014927289) internal successors, (78792), 63494 states have internal predecessors, (78792), 18704 states have call successors, (18704), 5710 states have call predecessors, (18704), 5644 states have return successors, (18745), 18134 states have call predecessors, (18745), 18704 states have call successors, (18745) [2021-11-12 23:21:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86651 states to 86651 states and 116241 transitions. [2021-11-12 23:21:08,283 INFO L78 Accepts]: Start accepts. Automaton has 86651 states and 116241 transitions. Word has length 375 [2021-11-12 23:21:08,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:08,284 INFO L470 AbstractCegarLoop]: Abstraction has 86651 states and 116241 transitions. [2021-11-12 23:21:08,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 4 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2021-11-12 23:21:08,285 INFO L276 IsEmpty]: Start isEmpty. Operand 86651 states and 116241 transitions. [2021-11-12 23:21:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-11-12 23:21:08,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:08,317 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 10, 10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:08,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:08,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:08,540 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:08,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:08,541 INFO L85 PathProgramCache]: Analyzing trace with hash 102630176, now seen corresponding path program 1 times [2021-11-12 23:21:08,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:08,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672828763] [2021-11-12 23:21:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:08,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:08,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:08,546 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:08,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c94ba28-8342-456e-b526-212b5ee48d1b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:21:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:11,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:21:11,805 INFO L286 TraceCheckSpWp]: Computing forward predicates...