./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.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_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/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_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/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_509ce098-7ec1-4992-b3e3-b30941f31e28/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 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:50:54,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:50:54,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:50:54,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:50:54,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:50:54,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:50:54,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:50:54,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:50:54,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:50:54,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:50:54,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:50:55,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:50:55,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:50:55,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:50:55,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:50:55,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:50:55,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:50:55,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:50:55,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:50:55,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:50:55,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:50:55,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:50:55,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:50:55,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:50:55,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:50:55,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:50:55,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:50:55,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:50:55,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:50:55,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:50:55,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:50:55,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:50:55,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:50:55,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:50:55,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:50:55,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:50:55,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:50:55,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:50:55,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:50:55,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:50:55,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:50:55,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:50:55,113 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:50:55,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:50:55,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:50:55,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:50:55,115 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:50:55,115 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:50:55,116 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:50:55,116 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:50:55,116 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:50:55,116 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:50:55,123 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:50:55,124 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:50:55,124 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:50:55,124 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:50:55,125 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:50:55,125 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:50:55,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:50:55,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:50:55,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:50:55,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:50:55,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:50:55,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:50:55,127 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:50:55,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:50:55,128 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:50:55,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:50:55,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:50:55,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:50:55,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:50:55,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:50:55,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:50:55,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:50:55,131 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:50:55,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:50:55,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:50:55,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:50:55,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:50:55,132 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_509ce098-7ec1-4992-b3e3-b30941f31e28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd [2021-11-12 23:50:55,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:50:55,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:50:55,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:50:55,412 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:50:55,413 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:50:55,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-12 23:50:55,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/data/8dc2ac173/7b44c8fe9d794e4499172fb902ffe10f/FLAG4d1d78241 [2021-11-12 23:50:56,426 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:50:56,427 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-12 23:50:56,466 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/data/8dc2ac173/7b44c8fe9d794e4499172fb902ffe10f/FLAG4d1d78241 [2021-11-12 23:50:56,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/data/8dc2ac173/7b44c8fe9d794e4499172fb902ffe10f [2021-11-12 23:50:56,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:50:56,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:50:56,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:50:56,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:50:56,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:50:56,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:50:56" (1/1) ... [2021-11-12 23:50:56,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa2545b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:50:56, skipping insertion in model container [2021-11-12 23:50:56,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:50:56" (1/1) ... [2021-11-12 23:50:56,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:50:57,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:50:58,689 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 23:50:59,344 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 23:50:59,347 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 23:50:59,562 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 23:50:59,569 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 23:50:59,687 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_509ce098-7ec1-4992-b3e3-b30941f31e28/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-12 23:50:59,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:50:59,802 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 23:50:59,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@fa93bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:50:59, skipping insertion in model container [2021-11-12 23:50:59,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:50:59,804 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:50:59,806 INFO L158 Benchmark]: Toolchain (without parser) took 2950.22ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 55.7MB in the beginning and 81.0MB in the end (delta: -25.2MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2021-11-12 23:50:59,806 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory was 56.7MB in the beginning and 56.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:50:59,808 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2947.35ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 55.5MB in the beginning and 81.0MB in the end (delta: -25.5MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2021-11-12 23:50:59,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory was 56.7MB in the beginning and 56.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2947.35ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 55.5MB in the beginning and 81.0MB in the end (delta: -25.5MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5575]: 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_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/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_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/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_509ce098-7ec1-4992-b3e3-b30941f31e28/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 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:51:01,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:51:01,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:51:02,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:51:02,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:51:02,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:51:02,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:51:02,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:51:02,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:51:02,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:51:02,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:51:02,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:51:02,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:51:02,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:51:02,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:51:02,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:51:02,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:51:02,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:51:02,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:51:02,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:51:02,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:51:02,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:51:02,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:51:02,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:51:02,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:51:02,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:51:02,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:51:02,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:51:02,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:51:02,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:51:02,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:51:02,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:51:02,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:51:02,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:51:02,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:51:02,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:51:02,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:51:02,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:51:02,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:51:02,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:51:02,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:51:02,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:51:02,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:51:02,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:51:02,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:51:02,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:51:02,125 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:51:02,125 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:51:02,126 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:51:02,126 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:51:02,126 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:51:02,126 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:51:02,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:51:02,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:51:02,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:51:02,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:51:02,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:51:02,128 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:51:02,128 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:51:02,128 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:51:02,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:51:02,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:51:02,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:51:02,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:51:02,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:51:02,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:51:02,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:51:02,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:51:02,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:51:02,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:51:02,131 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:51:02,131 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:51:02,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:51:02,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:51:02,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:51:02,132 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_509ce098-7ec1-4992-b3e3-b30941f31e28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd [2021-11-12 23:51:02,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:51:02,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:51:02,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:51:02,536 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:51:02,537 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:51:02,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-12 23:51:02,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/data/55ba72605/90c9ce11ae734969a0387833c758fd82/FLAG206fef2c9 [2021-11-12 23:51:03,543 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:51:03,545 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-12 23:51:03,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/data/55ba72605/90c9ce11ae734969a0387833c758fd82/FLAG206fef2c9 [2021-11-12 23:51:03,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/data/55ba72605/90c9ce11ae734969a0387833c758fd82 [2021-11-12 23:51:03,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:51:03,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:51:03,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:51:03,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:51:03,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:51:03,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:51:03" (1/1) ... [2021-11-12 23:51:03,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c71650c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:03, skipping insertion in model container [2021-11-12 23:51:03,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:51:03" (1/1) ... [2021-11-12 23:51:03,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:51:04,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:51:07,008 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_509ce098-7ec1-4992-b3e3-b30941f31e28/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-12 23:51:07,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:51:07,114 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:51:07,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:51:07,753 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_509ce098-7ec1-4992-b3e3-b30941f31e28/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-12 23:51:07,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:51:07,792 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:51:08,193 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_509ce098-7ec1-4992-b3e3-b30941f31e28/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-12 23:51:08,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:51:08,617 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:51:08,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:08 WrapperNode [2021-11-12 23:51:08,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:51:08,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:51:08,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:51:08,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:51:08,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:08" (1/1) ... [2021-11-12 23:51:08,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:08" (1/1) ... [2021-11-12 23:51:08,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:51:08,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:51:08,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:51:08,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:51:08,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:08" (1/1) ... [2021-11-12 23:51:08,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:08" (1/1) ... [2021-11-12 23:51:08,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:08" (1/1) ... [2021-11-12 23:51:08,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:08" (1/1) ... [2021-11-12 23:51:09,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:08" (1/1) ... [2021-11-12 23:51:09,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:08" (1/1) ... [2021-11-12 23:51:09,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:08" (1/1) ... [2021-11-12 23:51:09,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:51:09,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:51:09,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:51:09,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:51:09,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:08" (1/1) ... [2021-11-12 23:51:09,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:51:09,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:51:09,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:51:09,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:51:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-12 23:51:09,392 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-12 23:51:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-12 23:51:09,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-12 23:51:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-12 23:51:09,393 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-12 23:51:09,393 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-12 23:51:09,393 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-12 23:51:09,393 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_mac_processor [2021-11-12 23:51:09,444 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_mac_processor [2021-11-12 23:51:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:51:09,444 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:51:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32 [2021-11-12 23:51:09,445 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32 [2021-11-12 23:51:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_regs_len [2021-11-12 23:51:09,445 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_regs_len [2021-11-12 23:51:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 23:51:09,445 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 23:51:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:51:09,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:51:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_on [2021-11-12 23:51:09,445 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_on [2021-11-12 23:51:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_rx_engine [2021-11-12 23:51:09,446 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_rx_engine [2021-11-12 23:51:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-12 23:51:09,446 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-12 23:51:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 23:51:09,446 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 23:51:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-12 23:51:09,446 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-12 23:51:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_link [2021-11-12 23:51:09,446 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_link [2021-11-12 23:51:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-12 23:51:09,447 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-12 23:51:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-12 23:51:09,447 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-12 23:51:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unmap_page_2 [2021-11-12 23:51:09,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unmap_page_2 [2021-11-12 23:51:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-12 23:51:09,447 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-12 23:51:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-12 23:51:09,447 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-12 23:51:09,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:51:09,448 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-12 23:51:09,448 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-12 23:51:09,448 INFO L130 BoogieDeclarations]: Found specification of procedure jread32 [2021-11-12 23:51:09,448 INFO L138 BoogieDeclarations]: Found implementation of procedure jread32 [2021-11-12 23:51:09,448 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-12 23:51:09,448 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-12 23:51:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:51:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:51:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:51:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 23:51:09,450 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 23:51:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_rx_pcc [2021-11-12 23:51:09,450 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_rx_pcc [2021-11-12 23:51:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-12 23:51:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-12 23:51:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-12 23:51:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-12 23:51:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_unicastaddr [2021-11-12 23:51:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_unicastaddr [2021-11-12 23:51:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_macaddr [2021-11-12 23:51:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_macaddr [2021-11-12 23:51:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 23:51:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 23:51:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-12 23:51:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-12 23:51:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 23:51:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 23:51:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure jme_restart_rx_engine [2021-11-12 23:51:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_restart_rx_engine [2021-11-12 23:51:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:51:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:51:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-12 23:51:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-12 23:51:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-12 23:51:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-12 23:51:09,453 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_features [2021-11-12 23:51:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_features [2021-11-12 23:51:09,453 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-12 23:51:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-12 23:51:09,453 INFO L130 BoogieDeclarations]: Found specification of procedure jme_linkstat_from_phy [2021-11-12 23:51:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_linkstat_from_phy [2021-11-12 23:51:09,453 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2021-11-12 23:51:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2021-11-12 23:51:09,453 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_write [2021-11-12 23:51:09,454 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_write [2021-11-12 23:51:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_on [2021-11-12 23:51:09,454 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_on [2021-11-12 23:51:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-12 23:51:09,454 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-12 23:51:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-12 23:51:09,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-12 23:51:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:51:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_coherent [2021-11-12 23:51:09,454 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_coherent [2021-11-12 23:51:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure smi_phy_addr [2021-11-12 23:51:09,455 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_phy_addr [2021-11-12 23:51:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 23:51:09,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 23:51:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:51:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-12 23:51:09,455 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-12 23:51:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:51:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:51:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:51:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure reg_dbg [2021-11-12 23:51:09,455 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_dbg [2021-11-12 23:51:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-12 23:51:09,456 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-12 23:51:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:51:09,456 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:51:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-12 23:51:09,456 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-12 23:51:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-12 23:51:09,465 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-12 23:51:09,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:51:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure jme_start_irq [2021-11-12 23:51:09,467 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_start_irq [2021-11-12 23:51:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:51:09,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:51:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure jme_change_mtu [2021-11-12 23:51:09,474 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_change_mtu [2021-11-12 23:51:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-12 23:51:09,474 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-12 23:51:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-12 23:51:09,474 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-12 23:51:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:51:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-12 23:51:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-12 23:51:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure jme_fill_tx_map [2021-11-12 23:51:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_fill_tx_map [2021-11-12 23:51:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_tx_resources [2021-11-12 23:51:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_tx_resources [2021-11-12 23:51:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-12 23:51:09,476 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-12 23:51:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:51:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure jme_polling_mode [2021-11-12 23:51:09,476 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_polling_mode [2021-11-12 23:51:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:51:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:51:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable_pending [2021-11-12 23:51:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable_pending [2021-11-12 23:51:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:51:09,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:51:09,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:51:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:51:09,479 INFO L130 BoogieDeclarations]: Found specification of procedure jme_ioctl [2021-11-12 23:51:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_ioctl [2021-11-12 23:51:09,479 INFO L130 BoogieDeclarations]: Found specification of procedure jme_powersave_phy [2021-11-12 23:51:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_powersave_phy [2021-11-12 23:51:09,479 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_on [2021-11-12 23:51:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_on [2021-11-12 23:51:09,479 INFO L130 BoogieDeclarations]: Found specification of procedure new_phy_power_ctrl [2021-11-12 23:51:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure new_phy_power_ctrl [2021-11-12 23:51:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-12 23:51:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-12 23:51:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable_nosync [2021-11-12 23:51:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable_nosync [2021-11-12 23:51:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-12 23:51:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-12 23:51:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32f [2021-11-12 23:51:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32f [2021-11-12 23:51:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure smi_reg_addr [2021-11-12 23:51:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_reg_addr [2021-11-12 23:51:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_settings [2021-11-12 23:51:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_settings [2021-11-12 23:51:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-12 23:51:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-12 23:51:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-12 23:51:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-12 23:51:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:51:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:51:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:51:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:51:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 23:51:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 23:51:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure jme_nway_reset [2021-11-12 23:51:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_nway_reset [2021-11-12 23:51:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-12 23:51:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-12 23:51:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:51:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-12 23:51:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-12 23:51:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:51:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_rx_resources [2021-11-12 23:51:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_rx_resources [2021-11-12 23:51:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure jme_resume [2021-11-12 23:51:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_resume [2021-11-12 23:51:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure jme_tx_timeout [2021-11-12 23:51:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_tx_timeout [2021-11-12 23:51:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:51:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:51:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:51:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:51:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:51:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_tx_engine [2021-11-12 23:51:09,488 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_tx_engine [2021-11-12 23:51:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-12 23:51:09,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-12 23:51:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 23:51:09,488 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 23:51:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_off [2021-11-12 23:51:09,489 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_off [2021-11-12 23:51:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-12 23:51:09,489 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-12 23:51:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_multi [2021-11-12 23:51:09,489 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_multi [2021-11-12 23:51:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure jme_vlan_rx_register [2021-11-12 23:51:09,489 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_vlan_rx_register [2021-11-12 23:51:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure mmapio_memcpy [2021-11-12 23:51:09,490 INFO L138 BoogieDeclarations]: Found implementation of procedure mmapio_memcpy [2021-11-12 23:51:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 23:51:09,490 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 23:51:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 23:51:09,491 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 23:51:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure jme_clear_pm [2021-11-12 23:51:09,492 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_clear_pm [2021-11-12 23:51:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2021-11-12 23:51:09,492 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2021-11-12 23:51:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure jme_close [2021-11-12 23:51:09,493 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_close [2021-11-12 23:51:09,493 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 23:51:09,493 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 23:51:09,493 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-12 23:51:09,493 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-12 23:51:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_irq [2021-11-12 23:51:09,494 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_irq [2021-11-12 23:51:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 23:51:09,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 23:51:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:51:09,494 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_off [2021-11-12 23:51:09,494 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_off [2021-11-12 23:51:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:51:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:51:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:51:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_phy_processor [2021-11-12 23:51:09,495 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_phy_processor [2021-11-12 23:51:09,495 INFO L130 BoogieDeclarations]: Found specification of procedure jme_suspend [2021-11-12 23:51:09,496 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_suspend [2021-11-12 23:51:09,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:51:09,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:51:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-12 23:51:09,500 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-12 23:51:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_off [2021-11-12 23:51:09,500 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_off [2021-11-12 23:51:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-12 23:51:09,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-12 23:51:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_phyfifo_5level [2021-11-12 23:51:09,501 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_phyfifo_5level [2021-11-12 23:51:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-12 23:51:09,503 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-12 23:51:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-12 23:51:09,503 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-12 23:51:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_eeprom_len [2021-11-12 23:51:09,503 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_eeprom_len [2021-11-12 23:51:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2021-11-12 23:51:09,503 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2021-11-12 23:51:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_pcc_timer [2021-11-12 23:51:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_pcc_timer [2021-11-12 23:51:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure jme_interrupt_mode [2021-11-12 23:51:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_interrupt_mode [2021-11-12 23:51:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure jme_fix_features [2021-11-12 23:51:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_fix_features [2021-11-12 23:51:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_settings [2021-11-12 23:51:09,504 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_settings [2021-11-12 23:51:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_read [2021-11-12 23:51:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_read [2021-11-12 23:51:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-12 23:51:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-12 23:51:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-12 23:51:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-12 23:51:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_map_page_1 [2021-11-12 23:51:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_map_page_1 [2021-11-12 23:51:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure jme_open [2021-11-12 23:51:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_open [2021-11-12 23:51:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-12 23:51:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-12 23:51:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2021-11-12 23:51:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2021-11-12 23:51:17,616 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:51:53,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:51:53,489 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-12 23:51:53,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:51:53 BoogieIcfgContainer [2021-11-12 23:51:53,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:51:53,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:51:53,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:51:53,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:51:53,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:51:03" (1/3) ... [2021-11-12 23:51:53,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36383284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:51:53, skipping insertion in model container [2021-11-12 23:51:53,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:08" (2/3) ... [2021-11-12 23:51:53,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36383284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:51:53, skipping insertion in model container [2021-11-12 23:51:53,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:51:53" (3/3) ... [2021-11-12 23:51:53,502 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-12 23:51:53,508 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:51:53,508 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:51:53,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:51:53,573 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 23:51:53,573 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:51:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 1938 states, 1269 states have (on average 1.3152088258471237) internal successors, (1669), 1316 states have internal predecessors, (1669), 546 states have call successors, (546), 126 states have call predecessors, (546), 125 states have return successors, (540), 530 states have call predecessors, (540), 540 states have call successors, (540) [2021-11-12 23:51:53,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-12 23:51:53,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:53,651 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:51:53,652 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:51:53,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:53,657 INFO L85 PathProgramCache]: Analyzing trace with hash 914134315, now seen corresponding path program 1 times [2021-11-12 23:51:53,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:53,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783640271] [2021-11-12 23:51:53,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:53,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:53,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:53,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:53,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:51:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:55,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:51:55,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2021-11-12 23:51:56,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2021-11-12 23:51:58,156 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:58,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783640271] [2021-11-12 23:51:58,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783640271] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:51:58,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:51:58,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 23:51:58,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399026601] [2021-11-12 23:51:58,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:58,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:51:58,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:58,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:51:58,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:51:58,198 INFO L87 Difference]: Start difference. First operand has 1938 states, 1269 states have (on average 1.3152088258471237) internal successors, (1669), 1316 states have internal predecessors, (1669), 546 states have call successors, (546), 126 states have call predecessors, (546), 125 states have return successors, (540), 530 states have call predecessors, (540), 540 states have call successors, (540) Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-12 23:51:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:59,002 INFO L93 Difference]: Finished difference Result 3865 states and 5546 transitions. [2021-11-12 23:51:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:51:59,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 232 [2021-11-12 23:51:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:59,048 INFO L225 Difference]: With dead ends: 3865 [2021-11-12 23:51:59,048 INFO L226 Difference]: Without dead ends: 1911 [2021-11-12 23:51:59,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:51:59,070 INFO L933 BasicCegarLoop]: 2716 mSDtfsCounter, 6 mSDsluCounter, 10847 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 350.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 13563 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.08ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 387.74ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:59,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 13563 Invalid, 57 Unknown, 0 Unchecked, 66.08ms Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 387.74ms Time] [2021-11-12 23:51:59,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2021-11-12 23:51:59,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1911. [2021-11-12 23:51:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1250 states have (on average 1.3064) internal successors, (1633), 1286 states have internal predecessors, (1633), 536 states have call successors, (536), 125 states have call predecessors, (536), 124 states have return successors, (533), 523 states have call predecessors, (533), 533 states have call successors, (533) [2021-11-12 23:51:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2702 transitions. [2021-11-12 23:51:59,300 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2702 transitions. Word has length 232 [2021-11-12 23:51:59,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:59,305 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 2702 transitions. [2021-11-12 23:51:59,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-12 23:51:59,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2702 transitions. [2021-11-12 23:51:59,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-12 23:51:59,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:59,319 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:51:59,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:51:59,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:59,541 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:51:59,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:59,542 INFO L85 PathProgramCache]: Analyzing trace with hash -772722983, now seen corresponding path program 1 times [2021-11-12 23:51:59,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:59,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830645793] [2021-11-12 23:51:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:59,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:59,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:59,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:59,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:52:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:01,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:52:01,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2021-11-12 23:52:02,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:04,000 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2021-11-12 23:52:04,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:04,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830645793] [2021-11-12 23:52:04,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830645793] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:52:04,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [811753250] [2021-11-12 23:52:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:04,002 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:52:04,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:52:04,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:52:04,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-12 23:52:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:05,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:52:05,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2021-11-12 23:52:06,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2021-11-12 23:52:07,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [811753250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:07,028 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:52:07,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-12 23:52:07,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016248888] [2021-11-12 23:52:07,029 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:07,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:52:07,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:07,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:52:07,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:52:07,032 INFO L87 Difference]: Start difference. First operand 1911 states and 2702 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-12 23:52:07,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:07,303 INFO L93 Difference]: Finished difference Result 1913 states and 2703 transitions. [2021-11-12 23:52:07,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:07,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 237 [2021-11-12 23:52:07,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:07,320 INFO L225 Difference]: With dead ends: 1913 [2021-11-12 23:52:07,320 INFO L226 Difference]: Without dead ends: 1910 [2021-11-12 23:52:07,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 944 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:52:07,323 INFO L933 BasicCegarLoop]: 2698 mSDtfsCounter, 2661 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 150.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.19ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 182.59ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:07,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2661 Valid, 2698 Invalid, 2 Unknown, 0 Unchecked, 11.19ms Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 182.59ms Time] [2021-11-12 23:52:07,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2021-11-12 23:52:07,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1910. [2021-11-12 23:52:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1250 states have (on average 1.3056) internal successors, (1632), 1285 states have internal predecessors, (1632), 535 states have call successors, (535), 125 states have call predecessors, (535), 124 states have return successors, (533), 523 states have call predecessors, (533), 533 states have call successors, (533) [2021-11-12 23:52:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2700 transitions. [2021-11-12 23:52:07,530 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2700 transitions. Word has length 237 [2021-11-12 23:52:07,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:07,531 INFO L470 AbstractCegarLoop]: Abstraction has 1910 states and 2700 transitions. [2021-11-12 23:52:07,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-12 23:52:07,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2700 transitions. [2021-11-12 23:52:07,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-12 23:52:07,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:07,536 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:52:07,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:07,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:07,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:07,950 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:52:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:07,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1814534289, now seen corresponding path program 1 times [2021-11-12 23:52:07,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:07,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183694802] [2021-11-12 23:52:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:07,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:07,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:07,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:07,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:52:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:09,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:52:09,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2021-11-12 23:52:10,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2021-11-12 23:52:12,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:12,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183694802] [2021-11-12 23:52:12,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183694802] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:52:12,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1755781682] [2021-11-12 23:52:12,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:12,014 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:52:12,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:52:12,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:52:12,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-12 23:52:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:13,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:52:13,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2021-11-12 23:52:14,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2021-11-12 23:52:14,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1755781682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:14,928 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:52:14,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-12 23:52:14,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510549773] [2021-11-12 23:52:14,929 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:14,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:52:14,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:14,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:52:14,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:52:14,930 INFO L87 Difference]: Start difference. First operand 1910 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-12 23:52:15,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:15,349 INFO L93 Difference]: Finished difference Result 5645 states and 7994 transitions. [2021-11-12 23:52:15,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:15,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 238 [2021-11-12 23:52:15,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:15,384 INFO L225 Difference]: With dead ends: 5645 [2021-11-12 23:52:15,384 INFO L226 Difference]: Without dead ends: 3767 [2021-11-12 23:52:15,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 938 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:52:15,401 INFO L933 BasicCegarLoop]: 3306 mSDtfsCounter, 2648 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 177.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2648 SdHoareTripleChecker+Valid, 5949 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.18ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 211.82ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:15,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2648 Valid, 5949 Invalid, 9 Unknown, 0 Unchecked, 15.18ms Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 211.82ms Time] [2021-11-12 23:52:15,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-11-12 23:52:15,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3765. [2021-11-12 23:52:15,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 2467 states have (on average 1.3084718281313337) internal successors, (3228), 2536 states have internal predecessors, (3228), 1051 states have call successors, (1051), 248 states have call predecessors, (1051), 246 states have return successors, (1051), 1028 states have call predecessors, (1051), 1048 states have call successors, (1051) [2021-11-12 23:52:15,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 5330 transitions. [2021-11-12 23:52:15,650 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 5330 transitions. Word has length 238 [2021-11-12 23:52:15,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:15,652 INFO L470 AbstractCegarLoop]: Abstraction has 3765 states and 5330 transitions. [2021-11-12 23:52:15,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-12 23:52:15,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 5330 transitions. [2021-11-12 23:52:15,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-11-12 23:52:15,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:15,677 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:15,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:15,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:16,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:52:16,101 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:52:16,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:16,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2093723822, now seen corresponding path program 1 times [2021-11-12 23:52:16,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:16,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001454949] [2021-11-12 23:52:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:16,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:16,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:16,111 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:16,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:52:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:18,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 2240 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:52:18,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2021-11-12 23:52:20,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2021-11-12 23:52:22,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:22,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001454949] [2021-11-12 23:52:22,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001454949] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:52:22,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [341463194] [2021-11-12 23:52:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:22,567 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:52:22,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:52:22,568 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:52:22,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-12 23:52:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:23,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 2240 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:52:23,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2021-11-12 23:52:25,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2021-11-12 23:52:26,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [341463194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:26,686 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:52:26,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-12 23:52:26,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931853438] [2021-11-12 23:52:26,687 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:26,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:52:26,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:26,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:52:26,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:52:26,689 INFO L87 Difference]: Start difference. First operand 3765 states and 5330 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2021-11-12 23:52:27,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:27,695 INFO L93 Difference]: Finished difference Result 10011 states and 14149 transitions. [2021-11-12 23:52:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:27,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) Word has length 441 [2021-11-12 23:52:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:27,753 INFO L225 Difference]: With dead ends: 10011 [2021-11-12 23:52:27,753 INFO L226 Difference]: Without dead ends: 6284 [2021-11-12 23:52:27,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1760 GetRequests, 1750 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:52:27,778 INFO L933 BasicCegarLoop]: 3053 mSDtfsCounter, 1838 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 680.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 5584 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.18ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 741.71ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:27,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1838 Valid, 5584 Invalid, 103 Unknown, 0 Unchecked, 14.18ms Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 741.71ms Time] [2021-11-12 23:52:27,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6284 states. [2021-11-12 23:52:28,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6284 to 6261. [2021-11-12 23:52:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6261 states, 4110 states have (on average 1.3124087591240876) internal successors, (5394), 4231 states have internal predecessors, (5394), 1727 states have call successors, (1727), 425 states have call predecessors, (1727), 423 states have return successors, (1727), 1686 states have call predecessors, (1727), 1724 states have call successors, (1727) [2021-11-12 23:52:28,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 8848 transitions. [2021-11-12 23:52:28,267 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 8848 transitions. Word has length 441 [2021-11-12 23:52:28,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:28,268 INFO L470 AbstractCegarLoop]: Abstraction has 6261 states and 8848 transitions. [2021-11-12 23:52:28,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2021-11-12 23:52:28,270 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 8848 transitions. [2021-11-12 23:52:28,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1244 [2021-11-12 23:52:28,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:28,341 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 45, 45, 29, 29, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:52:28,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-11-12 23:52:28,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 23:52:28,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:28,755 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:52:28,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:28,756 INFO L85 PathProgramCache]: Analyzing trace with hash 928153376, now seen corresponding path program 1 times [2021-11-12 23:52:28,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:28,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537160719] [2021-11-12 23:52:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:28,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:28,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:28,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:28,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:52:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:32,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 4428 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:52:32,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12202 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 12153 trivial. 0 not checked. [2021-11-12 23:52:38,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12202 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 12161 trivial. 0 not checked. [2021-11-12 23:52:42,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:42,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537160719] [2021-11-12 23:52:42,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537160719] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:52:42,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [327034299] [2021-11-12 23:52:42,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:42,467 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:52:42,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:52:42,485 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:52:42,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-12 23:52:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:44,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 4428 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:52:44,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12202 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12202 trivial. 0 not checked. [2021-11-12 23:52:49,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:52,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12202 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12202 trivial. 0 not checked. [2021-11-12 23:52:52,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [327034299] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:52,753 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:52:52,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-12 23:52:52,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514680268] [2021-11-12 23:52:52,755 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:52,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:52:52,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:52,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:52:52,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:52:52,758 INFO L87 Difference]: Start difference. First operand 6261 states and 8848 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 2 states have call successors, (166), 2 states have call predecessors, (166), 2 states have return successors, (162), 2 states have call predecessors, (162), 2 states have call successors, (162) [2021-11-12 23:52:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:53,767 INFO L93 Difference]: Finished difference Result 17689 states and 24914 transitions. [2021-11-12 23:52:53,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:53,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 2 states have call successors, (166), 2 states have call predecessors, (166), 2 states have return successors, (162), 2 states have call predecessors, (162), 2 states have call successors, (162) Word has length 1243 [2021-11-12 23:52:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:53,894 INFO L225 Difference]: With dead ends: 17689 [2021-11-12 23:52:53,894 INFO L226 Difference]: Without dead ends: 11466 [2021-11-12 23:52:53,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4968 GetRequests, 4958 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:52:53,933 INFO L933 BasicCegarLoop]: 3349 mSDtfsCounter, 2411 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 492.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 5932 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.88ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 542.68ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:53,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2411 Valid, 5932 Invalid, 65 Unknown, 0 Unchecked, 14.88ms Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 542.68ms Time] [2021-11-12 23:52:53,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11466 states. [2021-11-12 23:52:54,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11466 to 11453. [2021-11-12 23:52:54,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11453 states, 7503 states have (on average 1.3032120485139278) internal successors, (9778), 7730 states have internal predecessors, (9778), 3161 states have call successors, (3161), 790 states have call predecessors, (3161), 788 states have return successors, (3164), 3082 states have call predecessors, (3164), 3158 states have call successors, (3164) [2021-11-12 23:52:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11453 states to 11453 states and 16103 transitions. [2021-11-12 23:52:54,755 INFO L78 Accepts]: Start accepts. Automaton has 11453 states and 16103 transitions. Word has length 1243 [2021-11-12 23:52:54,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:54,756 INFO L470 AbstractCegarLoop]: Abstraction has 11453 states and 16103 transitions. [2021-11-12 23:52:54,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 2 states have call successors, (166), 2 states have call predecessors, (166), 2 states have return successors, (162), 2 states have call predecessors, (162), 2 states have call successors, (162) [2021-11-12 23:52:54,756 INFO L276 IsEmpty]: Start isEmpty. Operand 11453 states and 16103 transitions. [2021-11-12 23:52:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1386 [2021-11-12 23:52:54,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:54,789 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 45, 45, 29, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:52:54,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:55,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:55,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:55,204 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:52:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:55,205 INFO L85 PathProgramCache]: Analyzing trace with hash 564275242, now seen corresponding path program 1 times [2021-11-12 23:52:55,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:55,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597700971] [2021-11-12 23:52:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:55,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:55,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:55,210 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:55,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:52:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:58,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 4827 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:52:58,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 13718 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 12549 trivial. 0 not checked. [2021-11-12 23:53:05,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13718 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13677 trivial. 0 not checked. [2021-11-12 23:53:10,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:10,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597700971] [2021-11-12 23:53:10,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597700971] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:53:10,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1457859709] [2021-11-12 23:53:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:10,017 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:10,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:53:10,018 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:53:10,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-12 23:53:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:11,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 4827 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:53:11,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13718 backedges. 1082 proven. 0 refuted. 0 times theorem prover too weak. 12636 trivial. 0 not checked. [2021-11-12 23:53:18,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 13718 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13714 trivial. 0 not checked. [2021-11-12 23:53:21,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1457859709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:53:21,971 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:53:21,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-12 23:53:21,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190082952] [2021-11-12 23:53:21,973 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:21,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:53:21,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:21,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:53:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:53:21,977 INFO L87 Difference]: Start difference. First operand 11453 states and 16103 transitions. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 4 states have call successors, (183), 3 states have call predecessors, (183), 3 states have return successors, (179), 4 states have call predecessors, (179), 4 states have call successors, (179) [2021-11-12 23:53:24,152 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 23:53:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:33,053 INFO L93 Difference]: Finished difference Result 33614 states and 47351 transitions. [2021-11-12 23:53:33,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:53:33,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 4 states have call successors, (183), 3 states have call predecessors, (183), 3 states have return successors, (179), 4 states have call predecessors, (179), 4 states have call successors, (179) Word has length 1385 [2021-11-12 23:53:33,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:33,165 INFO L225 Difference]: With dead ends: 33614 [2021-11-12 23:53:33,165 INFO L226 Difference]: Without dead ends: 22199 [2021-11-12 23:53:33,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5536 GetRequests, 5525 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:53:33,224 INFO L933 BasicCegarLoop]: 5675 mSDtfsCounter, 5004 mSDsluCounter, 4018 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 542 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9527.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5004 SdHoareTripleChecker+Valid, 9693 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.03ms SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10245.09ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:33,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5004 Valid, 9693 Invalid, 1678 Unknown, 0 Unchecked, 46.03ms Time], IncrementalHoareTripleChecker [542 Valid, 1135 Invalid, 1 Unknown, 0 Unchecked, 10245.09ms Time] [2021-11-12 23:53:33,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22199 states. [2021-11-12 23:53:34,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22199 to 22173. [2021-11-12 23:53:34,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22173 states, 14625 states have (on average 1.306940170940171) internal successors, (19114), 15064 states have internal predecessors, (19114), 6029 states have call successors, (6029), 1520 states have call predecessors, (6029), 1518 states have return successors, (6038), 5874 states have call predecessors, (6038), 6026 states have call successors, (6038) [2021-11-12 23:53:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22173 states to 22173 states and 31181 transitions. [2021-11-12 23:53:34,521 INFO L78 Accepts]: Start accepts. Automaton has 22173 states and 31181 transitions. Word has length 1385 [2021-11-12 23:53:34,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:34,522 INFO L470 AbstractCegarLoop]: Abstraction has 22173 states and 31181 transitions. [2021-11-12 23:53:34,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 4 states have call successors, (183), 3 states have call predecessors, (183), 3 states have return successors, (179), 4 states have call predecessors, (179), 4 states have call successors, (179) [2021-11-12 23:53:34,523 INFO L276 IsEmpty]: Start isEmpty. Operand 22173 states and 31181 transitions. [2021-11-12 23:53:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1411 [2021-11-12 23:53:34,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:34,660 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 45, 45, 29, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:34,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:34,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:35,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:35,080 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:35,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:35,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1287887632, now seen corresponding path program 1 times [2021-11-12 23:53:35,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:35,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795233759] [2021-11-12 23:53:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:35,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:35,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:35,086 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:35,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:53:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:38,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 4875 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:53:38,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:45,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 12564 trivial. 0 not checked. [2021-11-12 23:53:45,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13692 trivial. 0 not checked. [2021-11-12 23:53:49,684 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:49,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795233759] [2021-11-12 23:53:49,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795233759] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:53:49,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1158993975] [2021-11-12 23:53:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:49,684 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:49,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:53:49,685 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:53:49,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-12 23:53:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:51,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 4875 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:53:51,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13733 trivial. 0 not checked. [2021-11-12 23:53:58,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13731 trivial. 0 not checked. [2021-11-12 23:54:02,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1158993975] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:54:02,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:54:02,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 7, 9] total 21 [2021-11-12 23:54:02,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494578966] [2021-11-12 23:54:02,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:02,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:54:02,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:02,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:54:02,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:54:02,951 INFO L87 Difference]: Start difference. First operand 22173 states and 31181 transitions. Second operand has 8 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 3 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (98), 4 states have call predecessors, (98), 3 states have call successors, (98) [2021-11-12 23:54:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:05,484 INFO L93 Difference]: Finished difference Result 44408 states and 62579 transitions. [2021-11-12 23:54:05,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:54:05,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 3 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (98), 4 states have call predecessors, (98), 3 states have call successors, (98) Word has length 1410 [2021-11-12 23:54:05,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:05,597 INFO L225 Difference]: With dead ends: 44408 [2021-11-12 23:54:05,597 INFO L226 Difference]: Without dead ends: 22273 [2021-11-12 23:54:05,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5640 GetRequests, 5616 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:54:05,674 INFO L933 BasicCegarLoop]: 2693 mSDtfsCounter, 14 mSDsluCounter, 16113 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 831.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18806 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.55ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 869.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:05,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 18806 Invalid, 161 Unknown, 0 Unchecked, 41.55ms Time], IncrementalHoareTripleChecker [9 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 869.96ms Time] [2021-11-12 23:54:05,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22273 states. [2021-11-12 23:54:06,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22273 to 22203. [2021-11-12 23:54:06,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22203 states, 14645 states have (on average 1.3065209969272789) internal successors, (19134), 15074 states have internal predecessors, (19134), 6039 states have call successors, (6039), 1520 states have call predecessors, (6039), 1518 states have return successors, (6048), 5884 states have call predecessors, (6048), 6036 states have call successors, (6048) [2021-11-12 23:54:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22203 states to 22203 states and 31221 transitions. [2021-11-12 23:54:07,080 INFO L78 Accepts]: Start accepts. Automaton has 22203 states and 31221 transitions. Word has length 1410 [2021-11-12 23:54:07,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:07,082 INFO L470 AbstractCegarLoop]: Abstraction has 22203 states and 31221 transitions. [2021-11-12 23:54:07,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 3 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (98), 4 states have call predecessors, (98), 3 states have call successors, (98) [2021-11-12 23:54:07,082 INFO L276 IsEmpty]: Start isEmpty. Operand 22203 states and 31221 transitions. [2021-11-12 23:54:07,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1415 [2021-11-12 23:54:07,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:07,284 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 45, 45, 29, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:07,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:07,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:07,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:54:07,705 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:54:07,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:07,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1383625267, now seen corresponding path program 1 times [2021-11-12 23:54:07,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:07,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194489062] [2021-11-12 23:54:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:07,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:07,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:07,714 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:07,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:54:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:11,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 4885 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:54:11,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 12564 trivial. 0 not checked. [2021-11-12 23:54:18,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13692 trivial. 0 not checked. [2021-11-12 23:54:22,702 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:22,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194489062] [2021-11-12 23:54:22,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194489062] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:22,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [333041336] [2021-11-12 23:54:22,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:22,703 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:54:22,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:54:22,712 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:54:22,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-12 23:54:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:24,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 4885 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:54:24,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 2191 proven. 0 refuted. 0 times theorem prover too weak. 11542 trivial. 0 not checked. [2021-11-12 23:54:29,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:32,817 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13733 trivial. 0 not checked. [2021-11-12 23:54:32,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [333041336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:32,818 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:54:32,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-12 23:54:32,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556541824] [2021-11-12 23:54:32,819 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:32,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:54:32,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:32,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:54:32,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:54:32,822 INFO L87 Difference]: Start difference. First operand 22203 states and 31221 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 2 states have call successors, (151), 2 states have call predecessors, (151), 2 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2021-11-12 23:54:33,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:33,507 INFO L93 Difference]: Finished difference Result 44498 states and 62635 transitions. [2021-11-12 23:54:33,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:54:33,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 2 states have call successors, (151), 2 states have call predecessors, (151), 2 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) Word has length 1414 [2021-11-12 23:54:33,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:33,735 INFO L225 Difference]: With dead ends: 44498 [2021-11-12 23:54:33,735 INFO L226 Difference]: Without dead ends: 22333 [2021-11-12 23:54:33,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5652 GetRequests, 5641 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:54:33,797 INFO L933 BasicCegarLoop]: 2701 mSDtfsCounter, 6 mSDsluCounter, 5382 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8083 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.62ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:33,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 8083 Invalid, 20 Unknown, 0 Unchecked, 8.62ms Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 85.67ms Time] [2021-11-12 23:54:33,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22333 states. [2021-11-12 23:54:34,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22333 to 22263. [2021-11-12 23:54:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22263 states, 14685 states have (on average 1.3070480081716036) internal successors, (19194), 15114 states have internal predecessors, (19194), 6059 states have call successors, (6059), 1520 states have call predecessors, (6059), 1518 states have return successors, (6068), 5904 states have call predecessors, (6068), 6056 states have call successors, (6068) [2021-11-12 23:54:35,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22263 states to 22263 states and 31321 transitions. [2021-11-12 23:54:35,310 INFO L78 Accepts]: Start accepts. Automaton has 22263 states and 31321 transitions. Word has length 1414 [2021-11-12 23:54:35,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:35,312 INFO L470 AbstractCegarLoop]: Abstraction has 22263 states and 31321 transitions. [2021-11-12 23:54:35,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 2 states have call successors, (151), 2 states have call predecessors, (151), 2 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2021-11-12 23:54:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 22263 states and 31321 transitions. [2021-11-12 23:54:35,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1415 [2021-11-12 23:54:35,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:35,362 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 45, 45, 29, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:35,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:35,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:35,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:54:35,769 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:54:35,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:35,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1534068085, now seen corresponding path program 1 times [2021-11-12 23:54:35,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:35,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71331370] [2021-11-12 23:54:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:35,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:35,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:35,777 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:35,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:54:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:39,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 4885 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:54:39,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 12564 trivial. 0 not checked. [2021-11-12 23:54:46,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:50,476 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13692 trivial. 0 not checked. [2021-11-12 23:54:50,476 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:50,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71331370] [2021-11-12 23:54:50,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71331370] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:50,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [146738140] [2021-11-12 23:54:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:50,476 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:54:50,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:54:50,477 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:54:50,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-12 23:54:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:52,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 4885 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:54:52,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 3430 proven. 0 refuted. 0 times theorem prover too weak. 10303 trivial. 0 not checked. [2021-11-12 23:54:57,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13733 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13733 trivial. 0 not checked. [2021-11-12 23:55:00,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [146738140] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:55:00,250 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:55:00,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-12 23:55:00,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263233292] [2021-11-12 23:55:00,252 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:00,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:55:00,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:00,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:55:00,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:55:00,254 INFO L87 Difference]: Start difference. First operand 22263 states and 31321 transitions. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 2 states have call successors, (146), 2 states have call predecessors, (146), 2 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2021-11-12 23:55:01,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:01,073 INFO L93 Difference]: Finished difference Result 44618 states and 62835 transitions. [2021-11-12 23:55:01,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:55:01,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 2 states have call successors, (146), 2 states have call predecessors, (146), 2 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) Word has length 1414 [2021-11-12 23:55:01,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:01,323 INFO L225 Difference]: With dead ends: 44618 [2021-11-12 23:55:01,324 INFO L226 Difference]: Without dead ends: 22393 [2021-11-12 23:55:01,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5652 GetRequests, 5641 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:55:01,384 INFO L933 BasicCegarLoop]: 2701 mSDtfsCounter, 8 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5393 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.50ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:01,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 5393 Invalid, 21 Unknown, 0 Unchecked, 6.50ms Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 79.96ms Time] [2021-11-12 23:55:01,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22393 states. [2021-11-12 23:55:02,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22393 to 22323. [2021-11-12 23:55:02,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22323 states, 14725 states have (on average 1.307572156196944) internal successors, (19254), 15154 states have internal predecessors, (19254), 6079 states have call successors, (6079), 1520 states have call predecessors, (6079), 1518 states have return successors, (6088), 5924 states have call predecessors, (6088), 6076 states have call successors, (6088) [2021-11-12 23:55:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22323 states to 22323 states and 31421 transitions. [2021-11-12 23:55:02,538 INFO L78 Accepts]: Start accepts. Automaton has 22323 states and 31421 transitions. Word has length 1414 [2021-11-12 23:55:02,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:02,540 INFO L470 AbstractCegarLoop]: Abstraction has 22323 states and 31421 transitions. [2021-11-12 23:55:02,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 2 states have call successors, (146), 2 states have call predecessors, (146), 2 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2021-11-12 23:55:02,540 INFO L276 IsEmpty]: Start isEmpty. Operand 22323 states and 31421 transitions. [2021-11-12 23:55:02,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1414 [2021-11-12 23:55:02,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:02,578 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 45, 45, 29, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:02,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:02,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:03,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:55:03,001 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:55:03,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1084106040, now seen corresponding path program 1 times [2021-11-12 23:55:03,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:03,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385750062] [2021-11-12 23:55:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:03,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:03,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:03,008 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:03,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 23:55:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:06,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 4883 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:55:06,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 13732 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 12563 trivial. 0 not checked. [2021-11-12 23:55:13,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 13732 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13691 trivial. 0 not checked. [2021-11-12 23:55:17,800 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:17,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385750062] [2021-11-12 23:55:17,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385750062] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:55:17,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1557828016] [2021-11-12 23:55:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:17,801 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:55:17,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:55:17,803 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:55:17,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-12 23:55:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:22,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 4883 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:55:22,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 13732 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 12563 trivial. 0 not checked. [2021-11-12 23:55:29,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 13732 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13691 trivial. 0 not checked. [2021-11-12 23:55:33,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1557828016] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:55:33,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306992467] [2021-11-12 23:55:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:33,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:55:33,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:55:33,281 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:55:33,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-12 23:55:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:35,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 4883 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:55:35,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 13732 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 13040 trivial. 0 not checked. [2021-11-12 23:55:37,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 13732 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13732 trivial. 0 not checked. [2021-11-12 23:55:40,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306992467] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:55:40,315 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-12 23:55:40,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7, 7, 7] total 13 [2021-11-12 23:55:40,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22779356] [2021-11-12 23:55:40,320 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:40,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:55:40,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:40,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:55:40,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:55:40,322 INFO L87 Difference]: Start difference. First operand 22323 states and 31421 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 2 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2021-11-12 23:55:42,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:55:43,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:43,125 INFO L93 Difference]: Finished difference Result 44800 states and 63141 transitions. [2021-11-12 23:55:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:55:43,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 2 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 1413 [2021-11-12 23:55:43,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:43,228 INFO L225 Difference]: With dead ends: 44800 [2021-11-12 23:55:43,228 INFO L226 Difference]: Without dead ends: 22515 [2021-11-12 23:55:43,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8472 GetRequests, 8461 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:55:43,290 INFO L933 BasicCegarLoop]: 2700 mSDtfsCounter, 21 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2084.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 5389 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.10ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2109.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:43,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 5389 Invalid, 19 Unknown, 0 Unchecked, 6.10ms Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2109.77ms Time] [2021-11-12 23:55:43,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22515 states. [2021-11-12 23:55:44,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22515 to 22515. [2021-11-12 23:55:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22515 states, 14853 states have (on average 1.3059987881236115) internal successors, (19398), 15282 states have internal predecessors, (19398), 6143 states have call successors, (6143), 1520 states have call predecessors, (6143), 1518 states have return successors, (6152), 5988 states have call predecessors, (6152), 6140 states have call successors, (6152) [2021-11-12 23:55:44,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22515 states to 22515 states and 31693 transitions. [2021-11-12 23:55:44,277 INFO L78 Accepts]: Start accepts. Automaton has 22515 states and 31693 transitions. Word has length 1413 [2021-11-12 23:55:44,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:44,279 INFO L470 AbstractCegarLoop]: Abstraction has 22515 states and 31693 transitions. [2021-11-12 23:55:44,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 2 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2021-11-12 23:55:44,279 INFO L276 IsEmpty]: Start isEmpty. Operand 22515 states and 31693 transitions. [2021-11-12 23:55:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1517 [2021-11-12 23:55:44,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:44,310 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 49, 49, 33, 33, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:44,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:44,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-12 23:55:44,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:44,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:55:44,913 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:55:44,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:44,913 INFO L85 PathProgramCache]: Analyzing trace with hash 653669197, now seen corresponding path program 1 times [2021-11-12 23:55:44,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:44,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732263859] [2021-11-12 23:55:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:44,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:44,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:44,919 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:44,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:55:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:48,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 5189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:55:48,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 15633 trivial. 0 not checked. [2021-11-12 23:55:55,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:56:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 16761 trivial. 0 not checked. [2021-11-12 23:56:00,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:56:00,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732263859] [2021-11-12 23:56:00,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732263859] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:56:00,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [668381009] [2021-11-12 23:56:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:56:00,270 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:56:00,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:56:00,271 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:56:00,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-12 23:56:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:56:05,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 5189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:56:05,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:56:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 15633 trivial. 0 not checked. [2021-11-12 23:56:12,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:56:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 16761 trivial. 0 not checked. [2021-11-12 23:56:16,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [668381009] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:56:16,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977634880] [2021-11-12 23:56:16,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:56:16,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:56:16,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:56:16,625 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:56:16,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-12 23:56:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:56:18,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 5189 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:56:18,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:56:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 2251 proven. 0 refuted. 0 times theorem prover too weak. 14551 trivial. 0 not checked. [2021-11-12 23:56:20,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:56:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 16802 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16795 trivial. 0 not checked. [2021-11-12 23:56:24,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977634880] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:56:24,119 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-12 23:56:24,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7, 7, 7] total 13 [2021-11-12 23:56:24,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590689261] [2021-11-12 23:56:24,122 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:56:24,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:56:24,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:56:24,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:56:24,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:56:24,125 INFO L87 Difference]: Start difference. First operand 22515 states and 31693 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2021-11-12 23:56:24,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:56:24,830 INFO L93 Difference]: Finished difference Result 45184 states and 63701 transitions. [2021-11-12 23:56:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:56:24,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 1516 [2021-11-12 23:56:24,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:56:24,937 INFO L225 Difference]: With dead ends: 45184 [2021-11-12 23:56:24,937 INFO L226 Difference]: Without dead ends: 22707 [2021-11-12 23:56:25,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9090 GetRequests, 9079 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:56:25,016 INFO L933 BasicCegarLoop]: 2698 mSDtfsCounter, 6 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5389 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.42ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.40ms IncrementalHoareTripleChecker+Time [2021-11-12 23:56:25,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 5389 Invalid, 15 Unknown, 0 Unchecked, 6.42ms Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 73.40ms Time] [2021-11-12 23:56:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22707 states. [2021-11-12 23:56:26,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22707 to 22707. [2021-11-12 23:56:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22707 states, 14981 states have (on average 1.3033842867632335) internal successors, (19526), 15410 states have internal predecessors, (19526), 6207 states have call successors, (6207), 1520 states have call predecessors, (6207), 1518 states have return successors, (6216), 6052 states have call predecessors, (6216), 6204 states have call successors, (6216) [2021-11-12 23:56:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22707 states to 22707 states and 31949 transitions. [2021-11-12 23:56:26,111 INFO L78 Accepts]: Start accepts. Automaton has 22707 states and 31949 transitions. Word has length 1516 [2021-11-12 23:56:26,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:56:26,114 INFO L470 AbstractCegarLoop]: Abstraction has 22707 states and 31949 transitions. [2021-11-12 23:56:26,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2021-11-12 23:56:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 22707 states and 31949 transitions. [2021-11-12 23:56:26,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1712 [2021-11-12 23:56:26,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:56:26,139 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 57, 57, 41, 41, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:26,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:56:26,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-12 23:56:26,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-12 23:56:26,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:56:26,740 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:56:26,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:56:26,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1473171512, now seen corresponding path program 1 times [2021-11-12 23:56:26,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:56:26,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453030659] [2021-11-12 23:56:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:56:26,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:56:26,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:56:26,745 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:56:26,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 23:56:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:56:30,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 5743 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:56:30,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:56:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 24303 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 23134 trivial. 0 not checked. [2021-11-12 23:56:38,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:56:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 24303 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 24262 trivial. 0 not checked. [2021-11-12 23:56:43,815 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:56:43,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453030659] [2021-11-12 23:56:43,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453030659] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:56:43,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2002338498] [2021-11-12 23:56:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:56:43,816 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:56:43,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:56:43,816 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:56:43,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-12 23:56:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:56:49,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 5743 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:56:49,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:56:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 24303 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 23134 trivial. 0 not checked. [2021-11-12 23:56:57,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:57:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 24303 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 24262 trivial. 0 not checked. [2021-11-12 23:57:02,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2002338498] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:57:02,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168382862] [2021-11-12 23:57:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:57:02,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:57:02,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:57:02,099 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:57:02,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-12 23:57:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:57:04,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 5743 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:57:04,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:57:12,854 INFO L134 CoverageAnalysis]: Checked inductivity of 24303 backedges. 1168 proven. 1 refuted. 0 times theorem prover too weak. 23134 trivial. 0 not checked. [2021-11-12 23:57:12,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:57:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 24303 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 24262 trivial. 0 not checked. [2021-11-12 23:57:17,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168382862] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:57:17,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:57:17,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 11 [2021-11-12 23:57:17,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325166245] [2021-11-12 23:57:17,379 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:57:17,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:57:17,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:57:17,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:57:17,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:57:17,385 INFO L87 Difference]: Start difference. First operand 22707 states and 31949 transitions. Second operand has 11 states, 9 states have (on average 40.0) internal successors, (360), 11 states have internal predecessors, (360), 4 states have call successors, (201), 2 states have call predecessors, (201), 5 states have return successors, (198), 4 states have call predecessors, (198), 4 states have call successors, (198) [2021-11-12 23:57:18,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:57:18,657 INFO L93 Difference]: Finished difference Result 45441 states and 63935 transitions. [2021-11-12 23:57:18,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:57:18,658 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 40.0) internal successors, (360), 11 states have internal predecessors, (360), 4 states have call successors, (201), 2 states have call predecessors, (201), 5 states have return successors, (198), 4 states have call predecessors, (198), 4 states have call successors, (198) Word has length 1711 [2021-11-12 23:57:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:57:18,733 INFO L225 Difference]: With dead ends: 45441 [2021-11-12 23:57:18,733 INFO L226 Difference]: Without dead ends: 22723 [2021-11-12 23:57:18,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10262 GetRequests, 10251 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:57:18,790 INFO L933 BasicCegarLoop]: 2691 mSDtfsCounter, 7 mSDsluCounter, 18809 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 501.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 21500 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.49ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 535.37ms IncrementalHoareTripleChecker+Time [2021-11-12 23:57:18,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 21500 Invalid, 101 Unknown, 0 Unchecked, 17.49ms Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 535.37ms Time] [2021-11-12 23:57:18,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22723 states. [2021-11-12 23:57:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22723 to 22723. [2021-11-12 23:57:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22723 states, 14997 states have (on average 1.3030606121224244) internal successors, (19542), 15426 states have internal predecessors, (19542), 6207 states have call successors, (6207), 1520 states have call predecessors, (6207), 1518 states have return successors, (6216), 6052 states have call predecessors, (6216), 6204 states have call successors, (6216) [2021-11-12 23:57:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22723 states to 22723 states and 31965 transitions. [2021-11-12 23:57:19,755 INFO L78 Accepts]: Start accepts. Automaton has 22723 states and 31965 transitions. Word has length 1711 [2021-11-12 23:57:19,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:57:19,756 INFO L470 AbstractCegarLoop]: Abstraction has 22723 states and 31965 transitions. [2021-11-12 23:57:19,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 40.0) internal successors, (360), 11 states have internal predecessors, (360), 4 states have call successors, (201), 2 states have call predecessors, (201), 5 states have return successors, (198), 4 states have call predecessors, (198), 4 states have call successors, (198) [2021-11-12 23:57:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 22723 states and 31965 transitions. [2021-11-12 23:57:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1716 [2021-11-12 23:57:19,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:57:19,781 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 57, 57, 41, 41, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:57:19,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-12 23:57:20,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-12 23:57:20,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-11-12 23:57:20,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:57:20,382 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:57:20,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:57:20,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1307321644, now seen corresponding path program 1 times [2021-11-12 23:57:20,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:57:20,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197161438] [2021-11-12 23:57:20,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:57:20,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:57:20,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:57:20,405 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:57:20,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-12 23:57:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:57:24,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 5766 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:57:24,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:57:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 24362 backedges. 1188 proven. 3 refuted. 0 times theorem prover too weak. 23171 trivial. 0 not checked. [2021-11-12 23:57:33,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:57:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 24362 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 24299 trivial. 0 not checked. [2021-11-12 23:57:38,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:57:38,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197161438] [2021-11-12 23:57:38,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197161438] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:57:38,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1800972729] [2021-11-12 23:57:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:57:38,311 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:57:38,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:57:38,312 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:57:38,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-12 23:57:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:57:43,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 5766 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:57:43,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:57:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 24362 backedges. 1188 proven. 3 refuted. 0 times theorem prover too weak. 23171 trivial. 0 not checked. [2021-11-12 23:57:52,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:57:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 24362 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 24299 trivial. 0 not checked. [2021-11-12 23:57:57,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1800972729] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:57:57,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940604645] [2021-11-12 23:57:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:57:57,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:57:57,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:57:57,052 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:57:57,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-12 23:57:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:57:59,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 5766 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:57:59,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:58:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 24362 backedges. 1188 proven. 3 refuted. 0 times theorem prover too weak. 23171 trivial. 0 not checked. [2021-11-12 23:58:08,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:58:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 24362 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 24299 trivial. 0 not checked. [2021-11-12 23:58:14,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940604645] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:58:14,316 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:58:14,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-12 23:58:14,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606494815] [2021-11-12 23:58:14,320 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:58:14,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-12 23:58:14,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:58:14,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-12 23:58:14,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-11-12 23:58:14,326 INFO L87 Difference]: Start difference. First operand 22723 states and 31965 transitions. Second operand has 20 states, 17 states have (on average 21.88235294117647) internal successors, (372), 20 states have internal predecessors, (372), 5 states have call successors, (202), 2 states have call predecessors, (202), 7 states have return successors, (201), 5 states have call predecessors, (201), 5 states have call successors, (201) [2021-11-12 23:58:16,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:58:16,251 INFO L93 Difference]: Finished difference Result 45473 states and 63967 transitions. [2021-11-12 23:58:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:58:16,252 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 21.88235294117647) internal successors, (372), 20 states have internal predecessors, (372), 5 states have call successors, (202), 2 states have call predecessors, (202), 7 states have return successors, (201), 5 states have call predecessors, (201), 5 states have call successors, (201) Word has length 1715 [2021-11-12 23:58:16,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:58:16,320 INFO L225 Difference]: With dead ends: 45473 [2021-11-12 23:58:16,320 INFO L226 Difference]: Without dead ends: 22739 [2021-11-12 23:58:16,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10286 GetRequests, 10266 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:58:16,378 INFO L933 BasicCegarLoop]: 2690 mSDtfsCounter, 19 mSDsluCounter, 24183 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 909.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 26873 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.90ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 976.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:58:16,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 26873 Invalid, 145 Unknown, 0 Unchecked, 21.90ms Time], IncrementalHoareTripleChecker [16 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 976.00ms Time] [2021-11-12 23:58:16,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22739 states. [2021-11-12 23:58:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22739 to 22739. [2021-11-12 23:58:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22739 states, 15013 states have (on average 1.3027376273895956) internal successors, (19558), 15442 states have internal predecessors, (19558), 6207 states have call successors, (6207), 1520 states have call predecessors, (6207), 1518 states have return successors, (6216), 6052 states have call predecessors, (6216), 6204 states have call successors, (6216) [2021-11-12 23:58:17,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22739 states to 22739 states and 31981 transitions. [2021-11-12 23:58:17,186 INFO L78 Accepts]: Start accepts. Automaton has 22739 states and 31981 transitions. Word has length 1715 [2021-11-12 23:58:17,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:58:17,187 INFO L470 AbstractCegarLoop]: Abstraction has 22739 states and 31981 transitions. [2021-11-12 23:58:17,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 21.88235294117647) internal successors, (372), 20 states have internal predecessors, (372), 5 states have call successors, (202), 2 states have call predecessors, (202), 7 states have return successors, (201), 5 states have call predecessors, (201), 5 states have call successors, (201) [2021-11-12 23:58:17,187 INFO L276 IsEmpty]: Start isEmpty. Operand 22739 states and 31981 transitions. [2021-11-12 23:58:17,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1722 [2021-11-12 23:58:17,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:58:17,213 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 57, 57, 41, 41, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:17,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2021-11-12 23:58:17,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-12 23:58:17,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-12 23:58:17,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:58:17,814 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:58:17,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:58:17,815 INFO L85 PathProgramCache]: Analyzing trace with hash -937802232, now seen corresponding path program 2 times [2021-11-12 23:58:17,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:58:17,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764376458] [2021-11-12 23:58:17,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:58:17,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:58:17,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:58:17,821 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:58:17,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-12 23:58:52,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:58:52,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:58:53,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 5793 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:58:53,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:59:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 24448 backedges. 1216 proven. 6 refuted. 0 times theorem prover too weak. 23226 trivial. 0 not checked. [2021-11-12 23:59:02,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:59:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 24448 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 24354 trivial. 0 not checked. [2021-11-12 23:59:07,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:59:07,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764376458] [2021-11-12 23:59:07,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764376458] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:59:07,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [175663874] [2021-11-12 23:59:07,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:59:07,726 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:59:07,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:59:07,727 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:59:07,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-13 00:02:59,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 00:02:59,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 00:03:00,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 5793 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 00:03:00,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:03:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 24448 backedges. 1216 proven. 6 refuted. 0 times theorem prover too weak. 23226 trivial. 0 not checked. [2021-11-13 00:03:11,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:03:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 24448 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 24354 trivial. 0 not checked. [2021-11-13 00:03:16,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [175663874] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 00:03:16,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373692539] [2021-11-13 00:03:16,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 00:03:16,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 00:03:16,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 00:03:16,631 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 00:03:16,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509ce098-7ec1-4992-b3e3-b30941f31e28/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process