./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.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_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/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_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/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_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/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 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:27:29,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:27:29,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:27:30,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:27:30,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:27:30,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:27:30,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:27:30,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:27:30,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:27:30,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:27:30,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:27:30,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:27:30,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:27:30,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:27:30,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:27:30,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:27:30,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:27:30,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:27:30,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:27:30,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:27:30,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:27:30,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:27:30,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:27:30,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:27:30,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:27:30,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:27:30,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:27:30,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:27:30,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:27:30,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:27:30,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:27:30,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:27:30,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:27:30,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:27:30,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:27:30,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:27:30,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:27:30,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:27:30,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:27:30,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:27:30,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:27:30,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:27:30,174 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:27:30,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:27:30,176 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:27:30,176 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:27:30,177 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:27:30,177 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:27:30,177 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:27:30,178 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:27:30,178 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:27:30,178 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:27:30,179 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:27:30,180 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:27:30,180 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:27:30,180 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:27:30,180 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:27:30,180 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:27:30,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:27:30,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:27:30,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:27:30,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:27:30,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:27:30,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:27:30,183 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:27:30,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:27:30,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:27:30,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:27:30,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:27:30,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:27:30,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:30,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:27:30,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:27:30,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:27:30,186 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:27:30,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:27:30,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:27:30,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:27:30,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:27:30,187 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_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 [2021-11-13 01:27:30,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:27:30,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:27:30,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:27:30,559 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:27:30,560 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:27:30,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-13 01:27:30,669 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/data/7e5e062f1/a7019b629e454a81b21918421689a5b8/FLAG35a1a8137 [2021-11-13 01:27:31,684 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:27:31,684 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-13 01:27:31,732 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/data/7e5e062f1/a7019b629e454a81b21918421689a5b8/FLAG35a1a8137 [2021-11-13 01:27:32,067 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/data/7e5e062f1/a7019b629e454a81b21918421689a5b8 [2021-11-13 01:27:32,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:27:32,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:27:32,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:32,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:27:32,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:27:32,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:32" (1/1) ... [2021-11-13 01:27:32,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0d64a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:32, skipping insertion in model container [2021-11-13 01:27:32,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:32" (1/1) ... [2021-11-13 01:27:32,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:27:32,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:27:34,902 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_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2021-11-13 01:27:34,959 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-13 01:27:34,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:35,009 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) [2021-11-13 01:27:35,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26854202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:35, skipping insertion in model container [2021-11-13 01:27:35,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:35,011 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:27:35,013 INFO L158 Benchmark]: Toolchain (without parser) took 2941.04ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 68.7MB in the beginning and 51.1MB in the end (delta: 17.6MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. [2021-11-13 01:27:35,014 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:27:35,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2938.50ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 68.5MB in the beginning and 51.1MB in the end (delta: 17.4MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. [2021-11-13 01:27:35,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2938.50ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 68.5MB in the beginning and 51.1MB in the end (delta: 17.4MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7116]: 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_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/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_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/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_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/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 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:27:37,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:27:37,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:27:37,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:27:37,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:27:37,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:27:37,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:27:37,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:27:37,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:27:37,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:27:37,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:27:37,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:27:37,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:27:37,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:27:37,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:27:37,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:27:37,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:27:37,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:27:37,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:27:37,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:27:37,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:27:37,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:27:37,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:27:37,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:27:37,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:27:37,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:27:37,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:27:37,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:27:37,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:27:37,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:27:37,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:27:37,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:27:37,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:27:37,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:27:37,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:27:37,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:27:37,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:27:37,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:27:37,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:27:37,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:27:37,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:27:37,834 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:27:37,867 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:27:37,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:27:37,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:27:37,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:27:37,869 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:27:37,870 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:27:37,870 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:27:37,870 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:27:37,870 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:27:37,871 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:27:37,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:27:37,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:27:37,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:27:37,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:27:37,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:27:37,873 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:27:37,873 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:27:37,874 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:27:37,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:27:37,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:27:37,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:27:37,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:27:37,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:27:37,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:27:37,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:37,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:27:37,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:27:37,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:27:37,877 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:27:37,877 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:27:37,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:27:37,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:27:37,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:27:37,879 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_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 [2021-11-13 01:27:38,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:27:38,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:27:38,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:27:38,302 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:27:38,303 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:27:38,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-13 01:27:38,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/data/15c6bb844/f6c39fd65df84d8999abcf5855caf6e9/FLAGdb076da42 [2021-11-13 01:27:39,662 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:27:39,663 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-13 01:27:39,755 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/data/15c6bb844/f6c39fd65df84d8999abcf5855caf6e9/FLAGdb076da42 [2021-11-13 01:27:39,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/data/15c6bb844/f6c39fd65df84d8999abcf5855caf6e9 [2021-11-13 01:27:39,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:27:39,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:27:39,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:39,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:27:39,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:27:39,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:39" (1/1) ... [2021-11-13 01:27:39,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd60aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:39, skipping insertion in model container [2021-11-13 01:27:39,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:39" (1/1) ... [2021-11-13 01:27:39,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:27:40,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:27:42,750 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_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2021-11-13 01:27:42,859 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-13 01:27:42,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:42,960 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:27:43,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:27:43,532 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_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2021-11-13 01:27:43,537 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-13 01:27:43,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:43,575 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:27:44,211 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_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2021-11-13 01:27:44,216 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-13 01:27:44,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:44,406 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:27:44,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:44 WrapperNode [2021-11-13 01:27:44,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:44,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:27:44,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:27:44,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:27:44,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:44" (1/1) ... [2021-11-13 01:27:44,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:44" (1/1) ... [2021-11-13 01:27:44,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:27:44,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:27:44,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:27:44,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:27:44,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:44" (1/1) ... [2021-11-13 01:27:44,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:44" (1/1) ... [2021-11-13 01:27:44,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:44" (1/1) ... [2021-11-13 01:27:44,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:44" (1/1) ... [2021-11-13 01:27:45,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:44" (1/1) ... [2021-11-13 01:27:45,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:44" (1/1) ... [2021-11-13 01:27:45,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:44" (1/1) ... [2021-11-13 01:27:45,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:27:45,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:27:45,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:27:45,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:27:45,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:44" (1/1) ... [2021-11-13 01:27:45,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:45,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:27:45,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:27:45,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:27:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-13 01:27:45,409 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-13 01:27:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:27:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:27:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_2 [2021-11-13 01:27:45,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_2 [2021-11-13 01:27:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:27:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 01:27:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 01:27:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 01:27:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 01:27:45,411 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 01:27:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 01:27:45,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 01:27:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 01:27:45,412 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 01:27:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 01:27:45,412 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 01:27:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-13 01:27:45,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-13 01:27:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_count [2021-11-13 01:27:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_count [2021-11-13 01:27:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 01:27:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 01:27:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-13 01:27:45,414 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-13 01:27:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_status [2021-11-13 01:27:45,414 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_status [2021-11-13 01:27:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-13 01:27:45,415 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-13 01:27:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_status [2021-11-13 01:27:45,415 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_status [2021-11-13 01:27:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2021-11-13 01:27:45,416 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2021-11-13 01:27:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 01:27:45,417 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 01:27:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 01:27:45,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 01:27:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ring_debug [2021-11-13 01:27:45,418 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ring_debug [2021-11-13 01:27:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 01:27:45,418 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 01:27:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-13 01:27:45,418 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-13 01:27:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 01:27:45,419 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 01:27:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:27:45,420 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:27:45,420 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 01:27:45,421 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 01:27:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-13 01:27:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-13 01:27:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2021-11-13 01:27:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2021-11-13 01:27:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure ring_get [2021-11-13 01:27:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_get [2021-11-13 01:27:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-13 01:27:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-13 01:27:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:27:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_resume [2021-11-13 01:27:45,425 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_resume [2021-11-13 01:27:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 01:27:45,425 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 01:27:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:27:45,425 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-13 01:27:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-13 01:27:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 01:27:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2021-11-13 01:27:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2021-11-13 01:27:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_us_delta [2021-11-13 01:27:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_us_delta [2021-11-13 01:27:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 01:27:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 01:27:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_free_ring [2021-11-13 01:27:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_free_ring [2021-11-13 01:27:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure ring_last [2021-11-13 01:27:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_last [2021-11-13 01:27:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 01:27:45,429 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 01:27:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:27:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:27:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 01:27:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:27:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:27:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure ring_put [2021-11-13 01:27:45,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_put [2021-11-13 01:27:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-13 01:27:45,431 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-13 01:27:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:27:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:27:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-13 01:27:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-13 01:27:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:27:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-13 01:27:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-13 01:27:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:27:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 01:27:45,434 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 01:27:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-13 01:27:45,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-13 01:27:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_tx_timeout [2021-11-13 01:27:45,435 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_tx_timeout [2021-11-13 01:27:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-13 01:27:45,435 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-13 01:27:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-13 01:27:45,436 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-13 01:27:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 01:27:45,436 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 01:27:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-13 01:27:45,437 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-13 01:27:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 01:27:45,441 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 01:27:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_addr_status [2021-11-13 01:27:45,441 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_addr_status [2021-11-13 01:27:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_destroy_hwif [2021-11-13 01:27:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_destroy_hwif [2021-11-13 01:27:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 01:27:45,444 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 01:27:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_stop_hw [2021-11-13 01:27:45,445 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_stop_hw [2021-11-13 01:27:45,451 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_addr [2021-11-13 01:27:45,451 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_addr [2021-11-13 01:27:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 01:27:45,452 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 01:27:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 01:27:45,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 01:27:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_remove [2021-11-13 01:27:45,452 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_remove [2021-11-13 01:27:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 01:27:45,453 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 01:27:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-13 01:27:45,453 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-13 01:27:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_clear_regs [2021-11-13 01:27:45,453 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_clear_regs [2021-11-13 01:27:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 01:27:45,454 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 01:27:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 01:27:45,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 01:27:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-13 01:27:45,455 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-13 01:27:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 01:27:45,455 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 01:27:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_start_hw [2021-11-13 01:27:45,455 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_start_hw [2021-11-13 01:27:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 01:27:45,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 01:27:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 01:27:45,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 01:27:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-13 01:27:45,456 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-13 01:27:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure rd_activate [2021-11-13 01:27:45,457 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_activate [2021-11-13 01:27:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 01:27:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-13 01:27:45,457 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-13 01:27:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 01:27:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 01:27:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 01:27:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 01:27:45,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 01:27:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure rd_is_active [2021-11-13 01:27:45,458 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_is_active [2021-11-13 01:27:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_close [2021-11-13 01:27:45,459 INFO L138 BoogieDeclarations]: Found implementation of procedure irlap_close [2021-11-13 01:27:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 01:27:45,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 01:27:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:27:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_count [2021-11-13 01:27:45,460 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_count [2021-11-13 01:27:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 01:27:45,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 01:27:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-13 01:27:45,460 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-13 01:27:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-13 01:27:45,461 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-13 01:27:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 01:27:45,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 01:27:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:27:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 01:27:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 01:27:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_tx [2021-11-13 01:27:45,462 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_tx [2021-11-13 01:27:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 01:27:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 01:27:45,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 01:27:45,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 01:27:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ioctl [2021-11-13 01:27:45,463 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ioctl [2021-11-13 01:27:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_2 [2021-11-13 01:27:45,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_2 [2021-11-13 01:27:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_alloc_ring [2021-11-13 01:27:45,463 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_alloc_ring [2021-11-13 01:27:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_fill_rx [2021-11-13 01:27:45,464 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_fill_rx [2021-11-13 01:27:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-13 01:27:45,464 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-13 01:27:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_rx [2021-11-13 01:27:45,464 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_rx [2021-11-13 01:27:45,464 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-13 01:27:45,465 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-13 01:27:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_reg_debug [2021-11-13 01:27:45,465 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_reg_debug [2021-11-13 01:27:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 01:27:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_set_baud [2021-11-13 01:27:45,465 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_set_baud [2021-11-13 01:27:45,466 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2021-11-13 01:27:45,466 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2021-11-13 01:27:45,466 INFO L130 BoogieDeclarations]: Found specification of procedure ring_first [2021-11-13 01:27:45,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_first [2021-11-13 01:27:45,466 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-13 01:27:45,466 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-13 01:27:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:27:45,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:27:49,472 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 01:29:33,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:29:33,069 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:29:33,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:29:33 BoogieIcfgContainer [2021-11-13 01:29:33,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:29:33,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:29:33,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:29:33,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:29:33,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:27:39" (1/3) ... [2021-11-13 01:29:33,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fc9b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:29:33, skipping insertion in model container [2021-11-13 01:29:33,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:44" (2/3) ... [2021-11-13 01:29:33,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fc9b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:29:33, skipping insertion in model container [2021-11-13 01:29:33,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:29:33" (3/3) ... [2021-11-13 01:29:33,085 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-13 01:29:33,091 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:29:33,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:29:33,169 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:29:33,177 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 [2021-11-13 01:29:33,177 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:29:33,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 1625 states, 1124 states have (on average 1.3220640569395017) internal successors, (1486), 1150 states have internal predecessors, (1486), 409 states have call successors, (409), 91 states have call predecessors, (409), 90 states have return successors, (402), 401 states have call predecessors, (402), 402 states have call successors, (402) [2021-11-13 01:29:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-13 01:29:33,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:33,283 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:33,283 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:29:33,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:33,290 INFO L85 PathProgramCache]: Analyzing trace with hash -754527677, now seen corresponding path program 1 times [2021-11-13 01:29:33,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:33,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69032455] [2021-11-13 01:29:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:33,328 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:33,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:33,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:33,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:29:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:47,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2485 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:29:47,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:29:48,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-13 01:29:49,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:49,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69032455] [2021-11-13 01:29:49,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69032455] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:49,580 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:49,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 01:29:49,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775099205] [2021-11-13 01:29:49,583 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:49,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:29:49,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:49,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:29:49,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:29:49,645 INFO L87 Difference]: Start difference. First operand has 1625 states, 1124 states have (on average 1.3220640569395017) internal successors, (1486), 1150 states have internal predecessors, (1486), 409 states have call successors, (409), 91 states have call predecessors, (409), 90 states have return successors, (402), 401 states have call predecessors, (402), 402 states have call successors, (402) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 01:29:49,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:49,938 INFO L93 Difference]: Finished difference Result 3245 states and 4630 transitions. [2021-11-13 01:29:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:29:49,941 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (25), 2 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 175 [2021-11-13 01:29:49,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:49,993 INFO L225 Difference]: With dead ends: 3245 [2021-11-13 01:29:49,993 INFO L226 Difference]: Without dead ends: 1601 [2021-11-13 01:29:50,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:29:50,031 INFO L933 BasicCegarLoop]: 2293 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:50,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 46.08ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:29:50,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2021-11-13 01:29:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1601. [2021-11-13 01:29:50,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1110 states have (on average 1.3117117117117116) internal successors, (1456), 1126 states have internal predecessors, (1456), 401 states have call successors, (401), 90 states have call predecessors, (401), 89 states have return successors, (400), 399 states have call predecessors, (400), 400 states have call successors, (400) [2021-11-13 01:29:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2257 transitions. [2021-11-13 01:29:50,309 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2257 transitions. Word has length 175 [2021-11-13 01:29:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:50,311 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 2257 transitions. [2021-11-13 01:29:50,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 01:29:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2257 transitions. [2021-11-13 01:29:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-13 01:29:50,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:50,335 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:50,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:29:50,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:29:50,562 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:29:50,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:50,563 INFO L85 PathProgramCache]: Analyzing trace with hash -890110471, now seen corresponding path program 1 times [2021-11-13 01:29:50,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:50,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104123544] [2021-11-13 01:29:50,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:50,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:50,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:50,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:50,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:30:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:05,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2485 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:30:05,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-13 01:30:06,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-13 01:30:07,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:07,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104123544] [2021-11-13 01:30:07,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104123544] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:30:07,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:30:07,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-13 01:30:07,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643100103] [2021-11-13 01:30:07,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:07,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:30:07,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:07,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:30:07,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:30:07,435 INFO L87 Difference]: Start difference. First operand 1601 states and 2257 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-13 01:30:08,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:08,061 INFO L93 Difference]: Finished difference Result 3194 states and 4509 transitions. [2021-11-13 01:30:08,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:30:08,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 175 [2021-11-13 01:30:08,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:08,083 INFO L225 Difference]: With dead ends: 3194 [2021-11-13 01:30:08,083 INFO L226 Difference]: Without dead ends: 1602 [2021-11-13 01:30:08,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:30:08,096 INFO L933 BasicCegarLoop]: 2249 mSDtfsCounter, 6 mSDsluCounter, 8978 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 279.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11227 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.48ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 314.71ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:08,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 11227 Invalid, 59 Unknown, 0 Unchecked, 47.48ms Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 314.71ms Time] [2021-11-13 01:30:08,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2021-11-13 01:30:08,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1602. [2021-11-13 01:30:08,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1111 states have (on average 1.3114311431143115) internal successors, (1457), 1127 states have internal predecessors, (1457), 401 states have call successors, (401), 90 states have call predecessors, (401), 89 states have return successors, (400), 399 states have call predecessors, (400), 400 states have call successors, (400) [2021-11-13 01:30:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2258 transitions. [2021-11-13 01:30:08,199 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2258 transitions. Word has length 175 [2021-11-13 01:30:08,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:08,200 INFO L470 AbstractCegarLoop]: Abstraction has 1602 states and 2258 transitions. [2021-11-13 01:30:08,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-13 01:30:08,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2258 transitions. [2021-11-13 01:30:08,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-13 01:30:08,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:08,209 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:08,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:08,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:08,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:08,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:08,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1406706502, now seen corresponding path program 1 times [2021-11-13 01:30:08,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:08,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468766185] [2021-11-13 01:30:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:08,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:08,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:08,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:08,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:30:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:23,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:30:23,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-11-13 01:30:24,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-11-13 01:30:25,858 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:25,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468766185] [2021-11-13 01:30:25,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468766185] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:30:25,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [430931310] [2021-11-13 01:30:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:25,859 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:30:25,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:30:25,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:30:25,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-13 01:30:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:29,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:30:29,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2021-11-13 01:30:30,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2021-11-13 01:30:30,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [430931310] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:30,954 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:30:30,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-13 01:30:30,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697172804] [2021-11-13 01:30:30,955 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:30,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:30:30,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:30,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:30:30,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:30:30,957 INFO L87 Difference]: Start difference. First operand 1602 states and 2258 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 01:30:31,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:31,960 INFO L93 Difference]: Finished difference Result 4236 states and 5958 transitions. [2021-11-13 01:30:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:30:31,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 180 [2021-11-13 01:30:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:31,993 INFO L225 Difference]: With dead ends: 4236 [2021-11-13 01:30:31,993 INFO L226 Difference]: Without dead ends: 2662 [2021-11-13 01:30:32,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 706 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:30:32,010 INFO L933 BasicCegarLoop]: 2523 mSDtfsCounter, 1533 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 686.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.53ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 805.49ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:32,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 4676 Invalid, 42 Unknown, 0 Unchecked, 23.53ms Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 805.49ms Time] [2021-11-13 01:30:32,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2021-11-13 01:30:32,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2656. [2021-11-13 01:30:32,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 1847 states have (on average 1.31510557661072) internal successors, (2429), 1872 states have internal predecessors, (2429), 650 states have call successors, (650), 159 states have call predecessors, (650), 158 states have return successors, (653), 646 states have call predecessors, (653), 649 states have call successors, (653) [2021-11-13 01:30:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 3732 transitions. [2021-11-13 01:30:32,203 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 3732 transitions. Word has length 180 [2021-11-13 01:30:32,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:32,206 INFO L470 AbstractCegarLoop]: Abstraction has 2656 states and 3732 transitions. [2021-11-13 01:30:32,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 01:30:32,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 3732 transitions. [2021-11-13 01:30:32,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-13 01:30:32,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:32,216 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-13 01:30:32,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:32,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:32,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:30:32,642 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:32,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:32,643 INFO L85 PathProgramCache]: Analyzing trace with hash 151775173, now seen corresponding path program 1 times [2021-11-13 01:30:32,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:32,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229750062] [2021-11-13 01:30:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:32,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:32,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:32,661 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:32,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:30:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:48,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 2600 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:30:48,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2021-11-13 01:30:49,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-13 01:30:51,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:51,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229750062] [2021-11-13 01:30:51,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229750062] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:30:51,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [365290551] [2021-11-13 01:30:51,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:51,142 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:30:51,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:30:51,143 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:30:51,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-13 01:30:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:54,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 2600 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:30:55,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-13 01:30:56,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-13 01:30:57,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [365290551] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:57,830 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:30:57,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [7, 7] total 14 [2021-11-13 01:30:57,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594212327] [2021-11-13 01:30:57,831 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:57,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:30:57,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:57,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:30:57,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:30:57,834 INFO L87 Difference]: Start difference. First operand 2656 states and 3732 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-13 01:30:58,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:58,631 INFO L93 Difference]: Finished difference Result 7923 states and 11146 transitions. [2021-11-13 01:30:58,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:30:58,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 242 [2021-11-13 01:30:58,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:58,692 INFO L225 Difference]: With dead ends: 7923 [2021-11-13 01:30:58,692 INFO L226 Difference]: Without dead ends: 5300 [2021-11-13 01:30:58,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 952 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:30:58,714 INFO L933 BasicCegarLoop]: 2824 mSDtfsCounter, 2201 mSDsluCounter, 7849 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 10673 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.66ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.36ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:58,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2205 Valid, 10673 Invalid, 34 Unknown, 0 Unchecked, 43.66ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 164.36ms Time] [2021-11-13 01:30:58,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5300 states. [2021-11-13 01:30:59,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5300 to 5285. [2021-11-13 01:30:59,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5285 states, 3680 states have (on average 1.315217391304348) internal successors, (4840), 3730 states have internal predecessors, (4840), 1288 states have call successors, (1288), 317 states have call predecessors, (1288), 316 states have return successors, (1297), 1281 states have call predecessors, (1297), 1287 states have call successors, (1297) [2021-11-13 01:30:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 7425 transitions. [2021-11-13 01:30:59,093 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 7425 transitions. Word has length 242 [2021-11-13 01:30:59,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:59,095 INFO L470 AbstractCegarLoop]: Abstraction has 5285 states and 7425 transitions. [2021-11-13 01:30:59,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-13 01:30:59,096 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 7425 transitions. [2021-11-13 01:30:59,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-13 01:30:59,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:59,107 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:59,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:59,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:59,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:30:59,508 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:59,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:59,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1915993498, now seen corresponding path program 1 times [2021-11-13 01:30:59,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:59,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558513607] [2021-11-13 01:30:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:59,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:59,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:59,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:59,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:31:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:15,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:31:15,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2021-11-13 01:31:16,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-13 01:31:17,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:17,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558513607] [2021-11-13 01:31:17,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558513607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:17,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [698515832] [2021-11-13 01:31:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:17,638 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:17,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:31:17,640 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:31:17,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-13 01:31:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:21,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:31:21,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:23,505 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-13 01:31:23,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-13 01:31:24,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [698515832] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:24,317 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:31:24,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [7, 7] total 14 [2021-11-13 01:31:24,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779879151] [2021-11-13 01:31:24,317 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:24,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:31:24,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:24,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:31:24,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:31:24,320 INFO L87 Difference]: Start difference. First operand 5285 states and 7425 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-13 01:31:25,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:25,353 INFO L93 Difference]: Finished difference Result 15830 states and 22256 transitions. [2021-11-13 01:31:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:31:25,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 241 [2021-11-13 01:31:25,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:25,447 INFO L225 Difference]: With dead ends: 15830 [2021-11-13 01:31:25,447 INFO L226 Difference]: Without dead ends: 10578 [2021-11-13 01:31:25,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 948 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:31:25,475 INFO L933 BasicCegarLoop]: 2825 mSDtfsCounter, 2200 mSDsluCounter, 7851 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 153.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 10676 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.82ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 163.51ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:25,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2204 Valid, 10676 Invalid, 34 Unknown, 0 Unchecked, 38.82ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 163.51ms Time] [2021-11-13 01:31:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2021-11-13 01:31:26,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 10551. [2021-11-13 01:31:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10551 states, 7352 states have (on average 1.314608269858542) internal successors, (9665), 7452 states have internal predecessors, (9665), 2564 states have call successors, (2564), 635 states have call predecessors, (2564), 634 states have return successors, (2587), 2551 states have call predecessors, (2587), 2563 states have call successors, (2587) [2021-11-13 01:31:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10551 states to 10551 states and 14816 transitions. [2021-11-13 01:31:26,172 INFO L78 Accepts]: Start accepts. Automaton has 10551 states and 14816 transitions. Word has length 241 [2021-11-13 01:31:26,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:26,173 INFO L470 AbstractCegarLoop]: Abstraction has 10551 states and 14816 transitions. [2021-11-13 01:31:26,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-13 01:31:26,175 INFO L276 IsEmpty]: Start isEmpty. Operand 10551 states and 14816 transitions. [2021-11-13 01:31:26,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-13 01:31:26,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:26,183 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-13 01:31:26,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:26,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:26,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:26,599 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:26,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:26,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1639223806, now seen corresponding path program 1 times [2021-11-13 01:31:26,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:26,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671370733] [2021-11-13 01:31:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:26,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:26,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:26,616 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:26,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:31:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:42,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 2596 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:31:42,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2021-11-13 01:31:43,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:44,885 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-13 01:31:44,886 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:44,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671370733] [2021-11-13 01:31:44,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671370733] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:44,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1183564717] [2021-11-13 01:31:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:44,887 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:44,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:31:44,894 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:31:44,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-13 01:31:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:48,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 2596 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:31:48,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-13 01:31:50,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-13 01:31:51,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1183564717] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:51,248 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:31:51,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [7, 7] total 14 [2021-11-13 01:31:51,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002940553] [2021-11-13 01:31:51,249 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:51,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:31:51,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:51,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:31:51,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:31:51,251 INFO L87 Difference]: Start difference. First operand 10551 states and 14816 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-13 01:31:52,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:52,451 INFO L93 Difference]: Finished difference Result 31664 states and 44483 transitions. [2021-11-13 01:31:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:31:52,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 240 [2021-11-13 01:31:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:52,634 INFO L225 Difference]: With dead ends: 31664 [2021-11-13 01:31:52,634 INFO L226 Difference]: Without dead ends: 21146 [2021-11-13 01:31:52,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 944 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:31:52,712 INFO L933 BasicCegarLoop]: 2817 mSDtfsCounter, 2201 mSDsluCounter, 7837 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 10654 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.52ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175.80ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:52,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2205 Valid, 10654 Invalid, 37 Unknown, 0 Unchecked, 30.52ms Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 175.80ms Time] [2021-11-13 01:31:52,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21146 states. [2021-11-13 01:31:53,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21146 to 21015. [2021-11-13 01:31:53,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21015 states, 14640 states have (on average 1.3150956284153006) internal successors, (19253), 14864 states have internal predecessors, (19253), 5108 states have call successors, (5108), 1267 states have call predecessors, (5108), 1266 states have return successors, (5163), 5059 states have call predecessors, (5163), 5107 states have call successors, (5163) [2021-11-13 01:31:54,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21015 states to 21015 states and 29524 transitions. [2021-11-13 01:31:54,080 INFO L78 Accepts]: Start accepts. Automaton has 21015 states and 29524 transitions. Word has length 240 [2021-11-13 01:31:54,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:54,081 INFO L470 AbstractCegarLoop]: Abstraction has 21015 states and 29524 transitions. [2021-11-13 01:31:54,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-13 01:31:54,082 INFO L276 IsEmpty]: Start isEmpty. Operand 21015 states and 29524 transitions. [2021-11-13 01:31:54,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-13 01:31:54,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:54,094 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-13 01:31:54,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:54,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:54,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:54,515 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:54,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1885789065, now seen corresponding path program 1 times [2021-11-13 01:31:54,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:54,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794562766] [2021-11-13 01:31:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:54,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:54,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:54,531 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:54,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:32:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:09,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 2602 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:32:09,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2021-11-13 01:32:10,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-13 01:32:12,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:12,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794562766] [2021-11-13 01:32:12,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794562766] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:12,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [789772230] [2021-11-13 01:32:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:12,385 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:12,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:32:12,386 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:32:12,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-13 01:32:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:16,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2602 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:32:16,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-13 01:32:18,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-13 01:32:19,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [789772230] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:19,165 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:32:19,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [7, 7] total 14 [2021-11-13 01:32:19,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139955294] [2021-11-13 01:32:19,166 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:19,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:32:19,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:19,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:32:19,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:32:19,168 INFO L87 Difference]: Start difference. First operand 21015 states and 29524 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-13 01:32:20,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:20,871 INFO L93 Difference]: Finished difference Result 62906 states and 88358 transitions. [2021-11-13 01:32:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:32:20,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 243 [2021-11-13 01:32:20,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:21,296 INFO L225 Difference]: With dead ends: 62906 [2021-11-13 01:32:21,296 INFO L226 Difference]: Without dead ends: 41924 [2021-11-13 01:32:21,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:32:21,370 INFO L933 BasicCegarLoop]: 2645 mSDtfsCounter, 2202 mSDsluCounter, 7491 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2206 SdHoareTripleChecker+Valid, 10136 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.10ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 148.68ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:21,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2206 Valid, 10136 Invalid, 34 Unknown, 0 Unchecked, 27.10ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 148.68ms Time] [2021-11-13 01:32:21,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41924 states. [2021-11-13 01:32:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41924 to 41783. [2021-11-13 01:32:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41783 states, 29127 states have (on average 1.3140041885535758) internal successors, (38273), 29559 states have internal predecessors, (38273), 10123 states have call successors, (10123), 2533 states have call predecessors, (10123), 2532 states have return successors, (10250), 10036 states have call predecessors, (10250), 10122 states have call successors, (10250) [2021-11-13 01:32:24,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41783 states to 41783 states and 58646 transitions. [2021-11-13 01:32:24,340 INFO L78 Accepts]: Start accepts. Automaton has 41783 states and 58646 transitions. Word has length 243 [2021-11-13 01:32:24,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:24,345 INFO L470 AbstractCegarLoop]: Abstraction has 41783 states and 58646 transitions. [2021-11-13 01:32:24,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-13 01:32:24,345 INFO L276 IsEmpty]: Start isEmpty. Operand 41783 states and 58646 transitions. [2021-11-13 01:32:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-13 01:32:24,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:24,359 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-13 01:32:24,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:24,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:24,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:24,783 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:24,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2065977992, now seen corresponding path program 1 times [2021-11-13 01:32:24,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:24,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524113999] [2021-11-13 01:32:24,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:24,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:24,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:24,801 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:24,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 01:32:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:40,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:32:40,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-13 01:32:41,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2021-11-13 01:32:43,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:43,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524113999] [2021-11-13 01:32:43,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524113999] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:43,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [505206205] [2021-11-13 01:32:43,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:43,228 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:43,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:32:43,230 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:32:43,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-13 01:32:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:46,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:32:46,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-13 01:32:49,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-13 01:32:51,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [505206205] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:51,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 01:32:51,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 7, 7] total 19 [2021-11-13 01:32:51,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850397480] [2021-11-13 01:32:51,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:51,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:32:51,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:51,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:32:51,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:32:51,081 INFO L87 Difference]: Start difference. First operand 41783 states and 58646 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-13 01:32:53,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:32:55,575 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 [] [2021-11-13 01:33:14,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:14,272 INFO L93 Difference]: Finished difference Result 110505 states and 156155 transitions. [2021-11-13 01:33:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:33:14,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) Word has length 253 [2021-11-13 01:33:14,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:14,646 INFO L225 Difference]: With dead ends: 110505 [2021-11-13 01:33:14,647 INFO L226 Difference]: Without dead ends: 68755 [2021-11-13 01:33:14,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 991 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2021-11-13 01:33:14,786 INFO L933 BasicCegarLoop]: 4373 mSDtfsCounter, 3455 mSDsluCounter, 17058 mSDsCounter, 0 mSdLazyCounter, 2817 mSolverCounterSat, 445 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17734.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3462 SdHoareTripleChecker+Valid, 21431 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.54ms SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2817 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18962.16ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:14,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3462 Valid, 21431 Invalid, 3264 Unknown, 0 Unchecked, 79.54ms Time], IncrementalHoareTripleChecker [445 Valid, 2817 Invalid, 2 Unknown, 0 Unchecked, 18962.16ms Time] [2021-11-13 01:33:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68755 states. [2021-11-13 01:33:18,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68755 to 62372. [2021-11-13 01:33:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62372 states, 43483 states have (on average 1.3144217280316446) internal successors, (57155), 44115 states have internal predecessors, (57155), 15114 states have call successors, (15114), 3775 states have call predecessors, (15114), 3774 states have return successors, (15297), 14997 states have call predecessors, (15297), 15113 states have call successors, (15297) [2021-11-13 01:33:19,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62372 states to 62372 states and 87566 transitions. [2021-11-13 01:33:19,405 INFO L78 Accepts]: Start accepts. Automaton has 62372 states and 87566 transitions. Word has length 253 [2021-11-13 01:33:19,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:19,406 INFO L470 AbstractCegarLoop]: Abstraction has 62372 states and 87566 transitions. [2021-11-13 01:33:19,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-13 01:33:19,406 INFO L276 IsEmpty]: Start isEmpty. Operand 62372 states and 87566 transitions. [2021-11-13 01:33:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-13 01:33:19,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:19,425 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-13 01:33:19,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:19,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:19,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:19,838 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:19,839 INFO L85 PathProgramCache]: Analyzing trace with hash -378550359, now seen corresponding path program 1 times [2021-11-13 01:33:19,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:19,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231013929] [2021-11-13 01:33:19,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:19,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:19,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:19,855 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:19,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 01:33:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:36,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:33:36,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2021-11-13 01:33:37,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-11-13 01:33:38,804 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:38,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231013929] [2021-11-13 01:33:38,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231013929] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:33:38,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2115074723] [2021-11-13 01:33:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:38,805 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:33:38,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:33:38,806 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:33:38,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-13 01:33:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:42,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:33:42,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:45,221 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-13 01:33:45,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-13 01:33:46,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2115074723] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:33:46,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267606819] [2021-11-13 01:33:46,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:46,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:33:46,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:33:46,720 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:33:46,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-13 01:33:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:49,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:33:49,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-13 01:33:50,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-13 01:33:52,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267606819] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:33:52,137 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:33:52,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 9, 8, 9] total 20 [2021-11-13 01:33:52,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647530156] [2021-11-13 01:33:52,138 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:33:52,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 01:33:52,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:52,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 01:33:52,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:33:52,140 INFO L87 Difference]: Start difference. First operand 62372 states and 87566 transitions. Second operand has 20 states, 18 states have (on average 10.944444444444445) internal successors, (197), 18 states have internal predecessors, (197), 6 states have call successors, (80), 4 states have call predecessors, (80), 8 states have return successors, (76), 6 states have call predecessors, (76), 5 states have call successors, (76) [2021-11-13 01:33:54,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:33:56,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:33:58,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:34:41,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:41,960 INFO L93 Difference]: Finished difference Result 138475 states and 194911 transitions. [2021-11-13 01:34:41,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-13 01:34:41,961 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 10.944444444444445) internal successors, (197), 18 states have internal predecessors, (197), 6 states have call successors, (80), 4 states have call predecessors, (80), 8 states have return successors, (76), 6 states have call predecessors, (76), 5 states have call successors, (76) Word has length 254 [2021-11-13 01:34:41,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:42,538 INFO L225 Difference]: With dead ends: 138475 [2021-11-13 01:34:42,538 INFO L226 Difference]: Without dead ends: 76056 [2021-11-13 01:34:42,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1561 GetRequests, 1506 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=383, Invalid=2809, Unknown=0, NotChecked=0, Total=3192 [2021-11-13 01:34:42,746 INFO L933 BasicCegarLoop]: 5541 mSDtfsCounter, 7735 mSDsluCounter, 59906 mSDsCounter, 0 mSdLazyCounter, 6826 mSolverCounterSat, 2045 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39047.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7749 SdHoareTripleChecker+Valid, 65447 SdHoareTripleChecker+Invalid, 8874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 226.98ms SdHoareTripleChecker+Time, 2045 IncrementalHoareTripleChecker+Valid, 6826 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41711.38ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:42,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7749 Valid, 65447 Invalid, 8874 Unknown, 0 Unchecked, 226.98ms Time], IncrementalHoareTripleChecker [2045 Valid, 6826 Invalid, 3 Unknown, 0 Unchecked, 41711.38ms Time] [2021-11-13 01:34:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76056 states. [2021-11-13 01:34:46,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76056 to 72615. [2021-11-13 01:34:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72615 states, 50635 states have (on average 1.313972548632369) internal successors, (66533), 51375 states have internal predecessors, (66533), 17578 states have call successors, (17578), 4402 states have call predecessors, (17578), 4401 states have return successors, (17793), 17435 states have call predecessors, (17793), 17577 states have call successors, (17793) [2021-11-13 01:34:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72615 states to 72615 states and 101904 transitions. [2021-11-13 01:34:46,870 INFO L78 Accepts]: Start accepts. Automaton has 72615 states and 101904 transitions. Word has length 254 [2021-11-13 01:34:46,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:46,870 INFO L470 AbstractCegarLoop]: Abstraction has 72615 states and 101904 transitions. [2021-11-13 01:34:46,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 10.944444444444445) internal successors, (197), 18 states have internal predecessors, (197), 6 states have call successors, (80), 4 states have call predecessors, (80), 8 states have return successors, (76), 6 states have call predecessors, (76), 5 states have call successors, (76) [2021-11-13 01:34:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 72615 states and 101904 transitions. [2021-11-13 01:34:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-13 01:34:46,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:46,907 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-13 01:34:46,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:47,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:47,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:47,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:34:47,523 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:34:47,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:47,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1249954812, now seen corresponding path program 1 times [2021-11-13 01:34:47,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:47,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97778441] [2021-11-13 01:34:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:47,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:47,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:47,537 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:47,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 01:35:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:03,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:35:03,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 68 proven. 3 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-11-13 01:35:04,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 2 proven. 63 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-11-13 01:35:06,614 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:35:06,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97778441] [2021-11-13 01:35:06,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97778441] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:35:06,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [553359035] [2021-11-13 01:35:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:06,615 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:35:06,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:35:06,616 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:35:06,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-13 01:35:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:10,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:35:10,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-13 01:35:13,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-13 01:35:14,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [553359035] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:35:14,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202251954] [2021-11-13 01:35:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:14,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:35:14,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:35:14,599 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:35:14,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-13 01:35:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:16,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:35:16,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-13 01:35:18,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-13 01:35:19,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202251954] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:35:19,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:35:19,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 9, 8, 9] total 22 [2021-11-13 01:35:19,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927687001] [2021-11-13 01:35:19,562 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:35:19,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-13 01:35:19,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:35:19,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-13 01:35:19,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-11-13 01:35:19,564 INFO L87 Difference]: Start difference. First operand 72615 states and 101904 transitions. Second operand has 22 states, 20 states have (on average 10.05) internal successors, (201), 20 states have internal predecessors, (201), 6 states have call successors, (80), 4 states have call predecessors, (80), 8 states have return successors, (76), 6 states have call predecessors, (76), 5 states have call successors, (76) [2021-11-13 01:35:22,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:35:24,151 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:35:57,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:35:57,770 INFO L93 Difference]: Finished difference Result 157485 states and 221248 transitions. [2021-11-13 01:35:57,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 01:35:57,771 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 10.05) internal successors, (201), 20 states have internal predecessors, (201), 6 states have call successors, (80), 4 states have call predecessors, (80), 8 states have return successors, (76), 6 states have call predecessors, (76), 5 states have call successors, (76) Word has length 260 [2021-11-13 01:35:57,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:35:58,074 INFO L225 Difference]: With dead ends: 157485 [2021-11-13 01:35:58,074 INFO L226 Difference]: Without dead ends: 84812 [2021-11-13 01:35:58,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1600 GetRequests, 1540 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=420, Invalid=3362, Unknown=0, NotChecked=0, Total=3782 [2021-11-13 01:35:58,461 INFO L933 BasicCegarLoop]: 5249 mSDtfsCounter, 7726 mSDsluCounter, 72374 mSDsCounter, 0 mSdLazyCounter, 6261 mSolverCounterSat, 2043 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28736.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7740 SdHoareTripleChecker+Valid, 77623 SdHoareTripleChecker+Invalid, 8306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 181.75ms SdHoareTripleChecker+Time, 2043 IncrementalHoareTripleChecker+Valid, 6261 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30681.74ms IncrementalHoareTripleChecker+Time [2021-11-13 01:35:58,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7740 Valid, 77623 Invalid, 8306 Unknown, 0 Unchecked, 181.75ms Time], IncrementalHoareTripleChecker [2043 Valid, 6261 Invalid, 2 Unknown, 0 Unchecked, 30681.74ms Time] [2021-11-13 01:35:58,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84812 states. [2021-11-13 01:36:01,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84812 to 82849. [2021-11-13 01:36:01,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82849 states, 57784 states have (on average 1.3136508376021043) internal successors, (75908), 58630 states have internal predecessors, (75908), 20039 states have call successors, (20039), 5026 states have call predecessors, (20039), 5025 states have return successors, (20286), 19872 states have call predecessors, (20286), 20038 states have call successors, (20286) [2021-11-13 01:36:01,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82849 states to 82849 states and 116233 transitions. [2021-11-13 01:36:01,973 INFO L78 Accepts]: Start accepts. Automaton has 82849 states and 116233 transitions. Word has length 260 [2021-11-13 01:36:01,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:01,974 INFO L470 AbstractCegarLoop]: Abstraction has 82849 states and 116233 transitions. [2021-11-13 01:36:01,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 10.05) internal successors, (201), 20 states have internal predecessors, (201), 6 states have call successors, (80), 4 states have call predecessors, (80), 8 states have return successors, (76), 6 states have call predecessors, (76), 5 states have call successors, (76) [2021-11-13 01:36:01,974 INFO L276 IsEmpty]: Start isEmpty. Operand 82849 states and 116233 transitions. [2021-11-13 01:36:01,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-11-13 01:36:01,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:01,990 INFO L514 BasicCegarLoop]: trace histogram [15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-13 01:36:02,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:02,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-13 01:36:02,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2021-11-13 01:36:02,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:36:02,618 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:36:02,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:02,619 INFO L85 PathProgramCache]: Analyzing trace with hash 729681488, now seen corresponding path program 1 times [2021-11-13 01:36:02,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:36:02,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528329009] [2021-11-13 01:36:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:02,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:36:02,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:36:02,626 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:36:02,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 01:36:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:15,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:36:15,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 96 proven. 6 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-13 01:36:16,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 2 proven. 94 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-11-13 01:36:18,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:36:18,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528329009] [2021-11-13 01:36:18,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528329009] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:36:18,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [244351096] [2021-11-13 01:36:18,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:18,782 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:36:18,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:36:18,783 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:36:18,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-13 01:36:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:22,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:36:22,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-11-13 01:36:24,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-11-13 01:36:26,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [244351096] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:36:26,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102859025] [2021-11-13 01:36:26,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:26,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:36:26,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:36:26,079 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:36:26,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-13 01:36:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:28,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:36:28,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-11-13 01:36:30,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-11-13 01:36:31,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102859025] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:36:31,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:36:31,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8, 9, 8, 9] total 24 [2021-11-13 01:36:31,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908617600] [2021-11-13 01:36:31,292 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:36:31,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-13 01:36:31,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:36:31,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-13 01:36:31,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2021-11-13 01:36:31,295 INFO L87 Difference]: Start difference. First operand 82849 states and 116233 transitions. Second operand has 24 states, 22 states have (on average 9.318181818181818) internal successors, (205), 22 states have internal predecessors, (205), 6 states have call successors, (80), 4 states have call predecessors, (80), 8 states have return successors, (76), 6 states have call predecessors, (76), 5 states have call successors, (76) [2021-11-13 01:36:33,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:36:35,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:36:37,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:36:39,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:31,392 INFO L93 Difference]: Finished difference Result 177223 states and 248750 transitions. [2021-11-13 01:37:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-13 01:37:31,400 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 9.318181818181818) internal successors, (205), 22 states have internal predecessors, (205), 6 states have call successors, (80), 4 states have call predecessors, (80), 8 states have return successors, (76), 6 states have call predecessors, (76), 5 states have call successors, (76) Word has length 266 [2021-11-13 01:37:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:31,808 INFO L225 Difference]: With dead ends: 177223 [2021-11-13 01:37:31,809 INFO L226 Difference]: Without dead ends: 94308 [2021-11-13 01:37:32,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1639 GetRequests, 1574 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=461, Invalid=3961, Unknown=0, NotChecked=0, Total=4422 [2021-11-13 01:37:32,010 INFO L933 BasicCegarLoop]: 5249 mSDtfsCounter, 7629 mSDsluCounter, 71252 mSDsCounter, 0 mSdLazyCounter, 8936 mSolverCounterSat, 1987 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47651.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7643 SdHoareTripleChecker+Valid, 76501 SdHoareTripleChecker+Invalid, 10927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 227.75ms SdHoareTripleChecker+Time, 1987 IncrementalHoareTripleChecker+Valid, 8936 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50411.25ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:32,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7643 Valid, 76501 Invalid, 10927 Unknown, 0 Unchecked, 227.75ms Time], IncrementalHoareTripleChecker [1987 Valid, 8936 Invalid, 4 Unknown, 0 Unchecked, 50411.25ms Time] [2021-11-13 01:37:32,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94308 states. [2021-11-13 01:37:35,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94308 to 93091. [2021-11-13 01:37:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93091 states, 64941 states have (on average 1.3133613587718083) internal successors, (85291), 65893 states have internal predecessors, (85291), 22500 states have call successors, (22500), 5650 states have call predecessors, (22500), 5649 states have return successors, (22779), 22309 states have call predecessors, (22779), 22499 states have call successors, (22779) [2021-11-13 01:37:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93091 states to 93091 states and 130570 transitions. [2021-11-13 01:37:36,438 INFO L78 Accepts]: Start accepts. Automaton has 93091 states and 130570 transitions. Word has length 266 [2021-11-13 01:37:36,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:36,439 INFO L470 AbstractCegarLoop]: Abstraction has 93091 states and 130570 transitions. [2021-11-13 01:37:36,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 9.318181818181818) internal successors, (205), 22 states have internal predecessors, (205), 6 states have call successors, (80), 4 states have call predecessors, (80), 8 states have return successors, (76), 6 states have call predecessors, (76), 5 states have call successors, (76) [2021-11-13 01:37:36,439 INFO L276 IsEmpty]: Start isEmpty. Operand 93091 states and 130570 transitions. [2021-11-13 01:37:36,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-13 01:37:36,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:36,463 INFO L514 BasicCegarLoop]: trace histogram [20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-13 01:37:36,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:36,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:36,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:37,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:37:37,090 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:37:37,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:37,091 INFO L85 PathProgramCache]: Analyzing trace with hash 989179374, now seen corresponding path program 1 times [2021-11-13 01:37:37,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:37:37,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734132931] [2021-11-13 01:37:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:37,100 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:37:37,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:37:37,103 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:37:37,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-13 01:37:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:51,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:37:51,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 132 proven. 10 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2021-11-13 01:37:53,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 4 proven. 134 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2021-11-13 01:37:55,628 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:37:55,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734132931] [2021-11-13 01:37:55,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734132931] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:37:55,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1305091141] [2021-11-13 01:37:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:55,628 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:37:55,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:37:55,629 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:37:55,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-13 01:37:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:59,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 01:37:59,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2021-11-13 01:38:02,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2021-11-13 01:38:05,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1305091141] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:38:05,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056861989] [2021-11-13 01:38:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:05,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:38:05,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:38:05,108 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:38:05,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc01df9c-2f03-4e85-8c22-2b41cfc4362b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-13 01:38:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:07,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 01:38:07,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2021-11-13 01:38:09,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2021-11-13 01:38:10,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056861989] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:38:10,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:38:10,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11, 12, 11, 12] total 31 [2021-11-13 01:38:10,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814511948] [2021-11-13 01:38:10,988 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:38:10,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-13 01:38:10,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:38:10,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-13 01:38:10,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2021-11-13 01:38:10,992 INFO L87 Difference]: Start difference. First operand 93091 states and 130570 transitions. Second operand has 31 states, 29 states have (on average 7.344827586206897) internal successors, (213), 28 states have internal predecessors, (213), 6 states have call successors, (83), 5 states have call predecessors, (83), 10 states have return successors, (80), 7 states have call predecessors, (80), 6 states have call successors, (80) [2021-11-13 01:38:13,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:38:15,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:38:17,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:38:19,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []