./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 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/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_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH --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-9ad7fb2 [2021-11-03 04:09:46,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:09:46,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:09:46,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:09:46,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:09:46,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:09:46,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:09:46,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:09:46,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:09:46,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:09:46,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:09:46,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:09:46,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:09:46,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:09:46,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:09:46,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:09:46,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:09:46,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:09:46,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:09:46,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:09:46,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:09:46,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:09:46,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:09:46,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:09:46,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:09:46,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:09:46,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:09:46,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:09:46,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:09:46,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:09:46,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:09:46,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:09:46,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:09:46,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:09:46,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:09:46,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:09:46,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:09:46,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:09:46,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:09:46,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:09:46,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:09:46,346 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:09:46,396 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:09:46,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:09:46,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:09:46,398 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:09:46,398 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:09:46,399 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:09:46,399 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:09:46,399 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:09:46,399 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:09:46,400 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:09:46,401 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:09:46,401 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:09:46,401 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:09:46,402 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:09:46,402 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:09:46,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:09:46,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:09:46,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:09:46,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:09:46,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:09:46,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:09:46,404 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:09:46,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:09:46,405 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:09:46,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:09:46,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:09:46,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:09:46,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:09:46,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:09:46,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:09:46,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:09:46,409 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:09:46,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:09:46,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:09:46,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:09:46,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:09:46,410 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_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 [2021-11-03 04:09:46,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:09:46,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:09:46,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:09:46,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:09:46,802 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:09:46,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/../../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 [2021-11-03 04:09:46,872 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/data/940aa7210/d1e34fcdf2d64c18b4c51ecc15449ce2/FLAGa1a05ff18 [2021-11-03 04:09:47,903 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:09:47,904 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/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 [2021-11-03 04:09:47,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/data/940aa7210/d1e34fcdf2d64c18b4c51ecc15449ce2/FLAGa1a05ff18 [2021-11-03 04:09:48,263 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/data/940aa7210/d1e34fcdf2d64c18b4c51ecc15449ce2 [2021-11-03 04:09:48,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:09:48,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:09:48,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:09:48,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:09:48,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:09:48,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:48" (1/1) ... [2021-11-03 04:09:48,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77363ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:48, skipping insertion in model container [2021-11-03 04:09:48,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:48" (1/1) ... [2021-11-03 04:09:48,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:09:48,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:09:51,107 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_4bc09cc2-672a-4af5-a41a-246e87b703ef/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] [2021-11-03 04:09:51,175 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-03 04:09:51,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:09:51,259 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) [2021-11-03 04:09:51,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a740990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:51, skipping insertion in model container [2021-11-03 04:09:51,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:09:51,260 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:09:51,263 INFO L168 Benchmark]: Toolchain (without parser) took 2992.90 ms. Allocated memory was 113.2 MB in the beginning and 144.7 MB in the end (delta: 31.5 MB). Free memory was 62.6 MB in the beginning and 62.2 MB in the end (delta: 379.3 kB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:09:51,264 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 113.2 MB. Free memory was 92.1 MB in the beginning and 92.1 MB in the end (delta: 65.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:09:51,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2986.52 ms. Allocated memory was 113.2 MB in the beginning and 144.7 MB in the end (delta: 31.5 MB). Free memory was 62.4 MB in the beginning and 62.2 MB in the end (delta: 184.0 kB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:09:51,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 113.2 MB. Free memory was 92.1 MB in the beginning and 92.1 MB in the end (delta: 65.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2986.52 ms. Allocated memory was 113.2 MB in the beginning and 144.7 MB in the end (delta: 31.5 MB). Free memory was 62.4 MB in the beginning and 62.2 MB in the end (delta: 184.0 kB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. * 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_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/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_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH --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-9ad7fb2 [2021-11-03 04:09:53,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:09:53,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:09:53,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:09:53,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:09:53,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:09:53,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:09:53,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:09:53,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:09:53,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:09:53,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:09:53,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:09:53,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:09:53,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:09:53,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:09:53,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:09:53,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:09:53,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:09:53,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:09:53,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:09:53,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:09:53,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:09:53,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:09:53,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:09:53,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:09:53,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:09:53,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:09:53,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:09:53,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:09:53,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:09:53,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:09:53,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:09:53,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:09:53,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:09:53,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:09:53,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:09:53,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:09:53,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:09:53,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:09:53,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:09:53,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:09:53,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:09:54,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:09:54,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:09:54,021 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:09:54,021 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:09:54,021 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:09:54,022 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:09:54,022 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:09:54,022 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:09:54,022 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:09:54,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:09:54,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:09:54,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:09:54,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:09:54,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:09:54,024 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:09:54,025 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:09:54,025 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:09:54,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:09:54,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:09:54,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:09:54,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:09:54,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:09:54,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:09:54,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:09:54,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:09:54,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:09:54,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:09:54,029 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:09:54,029 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:09:54,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:09:54,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:09:54,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:09:54,031 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_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 [2021-11-03 04:09:54,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:09:54,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:09:54,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:09:54,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:09:54,466 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:09:54,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/../../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 [2021-11-03 04:09:54,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/data/f25a65311/39ef352d33b24ff18307d65f97a19559/FLAGe8e1d04e0 [2021-11-03 04:09:55,663 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:09:55,666 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/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 [2021-11-03 04:09:55,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/data/f25a65311/39ef352d33b24ff18307d65f97a19559/FLAGe8e1d04e0 [2021-11-03 04:09:56,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/data/f25a65311/39ef352d33b24ff18307d65f97a19559 [2021-11-03 04:09:56,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:09:56,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:09:56,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:09:56,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:09:56,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:09:56,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:56" (1/1) ... [2021-11-03 04:09:56,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d70681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:56, skipping insertion in model container [2021-11-03 04:09:56,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:56" (1/1) ... [2021-11-03 04:09:56,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:09:56,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:09:58,788 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_4bc09cc2-672a-4af5-a41a-246e87b703ef/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] [2021-11-03 04:09:58,851 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-03 04:09:58,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:09:58,940 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:09:59,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:09:59,432 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_4bc09cc2-672a-4af5-a41a-246e87b703ef/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] [2021-11-03 04:09:59,437 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-03 04:09:59,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:09:59,506 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:10:00,025 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_4bc09cc2-672a-4af5-a41a-246e87b703ef/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] [2021-11-03 04:10:00,031 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-03 04:10:00,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:10:00,226 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:10:00,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:00 WrapperNode [2021-11-03 04:10:00,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:10:00,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:10:00,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:10:00,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:10:00,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:00" (1/1) ... [2021-11-03 04:10:00,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:00" (1/1) ... [2021-11-03 04:10:01,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:10:01,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:10:01,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:10:01,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:10:01,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:00" (1/1) ... [2021-11-03 04:10:01,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:00" (1/1) ... [2021-11-03 04:10:01,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:00" (1/1) ... [2021-11-03 04:10:01,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:00" (1/1) ... [2021-11-03 04:10:02,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:00" (1/1) ... [2021-11-03 04:10:02,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:00" (1/1) ... [2021-11-03 04:10:02,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:00" (1/1) ... [2021-11-03 04:10:02,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:10:02,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:10:02,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:10:02,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:10:02,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:00" (1/1) ... [2021-11-03 04:10:02,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:10:02,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:10:02,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:10:02,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:10:02,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:10:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:10:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:10:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 04:10:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 04:10:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 04:10:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:10:02,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:10:02,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-03 04:10:02,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:10:02,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:10:02,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 04:10:02,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:10:02,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:10:02,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:10:02,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:10:02,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:10:02,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:10:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 04:10:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 04:10:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 04:10:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 04:10:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:10:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:10:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-03 04:10:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 04:10:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 04:10:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 04:10:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 04:10:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:10:02,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:13:07,939 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:13:07,940 INFO L299 CfgBuilder]: Removed 5400 assume(true) statements. [2021-11-03 04:13:07,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:07 BoogieIcfgContainer [2021-11-03 04:13:07,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:13:07,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:13:07,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:13:07,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:13:07,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:09:56" (1/3) ... [2021-11-03 04:13:07,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a224066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:07, skipping insertion in model container [2021-11-03 04:13:07,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:10:00" (2/3) ... [2021-11-03 04:13:07,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a224066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:07, skipping insertion in model container [2021-11-03 04:13:07,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:07" (3/3) ... [2021-11-03 04:13:07,957 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-03 04:13:07,962 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:13:07,962 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-03 04:13:08,027 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:13:08,033 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 [2021-11-03 04:13:08,033 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-03 04:13:08,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 5212 states, 5195 states have (on average 1.3451395572666025) internal successors, (6988), 5211 states have internal predecessors, (6988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:08,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 04:13:08,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:08,139 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:08,140 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 04:13:08,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:08,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1631980527, now seen corresponding path program 1 times [2021-11-03 04:13:08,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:08,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479039951] [2021-11-03 04:13:08,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:08,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:08,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:08,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:08,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:13:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:20,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 2294 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:13:20,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:20,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:20,910 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:20,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479039951] [2021-11-03 04:13:20,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479039951] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:20,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:20,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:13:20,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628303865] [2021-11-03 04:13:20,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:13:20,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:20,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:13:20,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:13:20,944 INFO L87 Difference]: Start difference. First operand has 5212 states, 5195 states have (on average 1.3451395572666025) internal successors, (6988), 5211 states have internal predecessors, (6988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:21,151 INFO L93 Difference]: Finished difference Result 10420 states and 13971 transitions. [2021-11-03 04:13:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:13:21,152 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 04:13:21,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:21,195 INFO L225 Difference]: With dead ends: 10420 [2021-11-03 04:13:21,195 INFO L226 Difference]: Without dead ends: 5146 [2021-11-03 04:13:21,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:13:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5146 states. [2021-11-03 04:13:21,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5146 to 5146. [2021-11-03 04:13:21,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5146 states, 5130 states have (on average 1.3284600389863548) internal successors, (6815), 5145 states have internal predecessors, (6815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 6815 transitions. [2021-11-03 04:13:21,431 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 6815 transitions. Word has length 64 [2021-11-03 04:13:21,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:21,432 INFO L470 AbstractCegarLoop]: Abstraction has 5146 states and 6815 transitions. [2021-11-03 04:13:21,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:21,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 6815 transitions. [2021-11-03 04:13:21,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 04:13:21,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:21,439 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:21,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:21,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:21,664 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 04:13:21,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:21,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1881373433, now seen corresponding path program 1 times [2021-11-03 04:13:21,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:21,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80982773] [2021-11-03 04:13:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:21,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:21,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:21,681 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:21,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:13:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:33,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 2294 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:13:33,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:33,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:34,111 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:34,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80982773] [2021-11-03 04:13:34,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80982773] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:34,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:34,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:13:34,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224811493] [2021-11-03 04:13:34,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:13:34,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:34,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:13:34,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:13:34,115 INFO L87 Difference]: Start difference. First operand 5146 states and 6815 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:34,860 INFO L93 Difference]: Finished difference Result 10279 states and 13627 transitions. [2021-11-03 04:13:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:13:34,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 04:13:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:34,890 INFO L225 Difference]: With dead ends: 10279 [2021-11-03 04:13:34,891 INFO L226 Difference]: Without dead ends: 5157 [2021-11-03 04:13:34,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:13:34,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2021-11-03 04:13:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 5157. [2021-11-03 04:13:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5141 states have (on average 1.3277572456720483) internal successors, (6826), 5156 states have internal predecessors, (6826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:35,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 6826 transitions. [2021-11-03 04:13:35,050 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 6826 transitions. Word has length 64 [2021-11-03 04:13:35,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:35,051 INFO L470 AbstractCegarLoop]: Abstraction has 5157 states and 6826 transitions. [2021-11-03 04:13:35,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:35,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 6826 transitions. [2021-11-03 04:13:35,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:13:35,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:35,055 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:13:35,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:35,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:35,256 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 04:13:35,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:35,257 INFO L85 PathProgramCache]: Analyzing trace with hash -592281726, now seen corresponding path program 1 times [2021-11-03 04:13:35,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:35,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841700829] [2021-11-03 04:13:35,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:35,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:35,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:35,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:35,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:13:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:47,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2329 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:13:47,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:48,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:13:48,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:13:48,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:48,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841700829] [2021-11-03 04:13:48,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841700829] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:13:48,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [867601520] [2021-11-03 04:13:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:48,642 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:13:48,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:13:48,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:13:48,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-03 04:13:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:51,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 2329 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:13:51,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:13:52,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:13:52,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [867601520] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:52,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:13:52,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 04:13:52,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359892604] [2021-11-03 04:13:52,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:13:52,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:52,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:13:52,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:13:52,438 INFO L87 Difference]: Start difference. First operand 5157 states and 6826 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:53,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:53,401 INFO L93 Difference]: Finished difference Result 12724 states and 16877 transitions. [2021-11-03 04:13:53,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:13:53,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 04:13:53,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:53,444 INFO L225 Difference]: With dead ends: 12724 [2021-11-03 04:13:53,444 INFO L226 Difference]: Without dead ends: 7612 [2021-11-03 04:13:53,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:13:53,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7612 states. [2021-11-03 04:13:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7612 to 7570. [2021-11-03 04:13:53,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7554 states have (on average 1.3318771511781837) internal successors, (10061), 7569 states have internal predecessors, (10061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:53,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 10061 transitions. [2021-11-03 04:13:53,712 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 10061 transitions. Word has length 71 [2021-11-03 04:13:53,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:53,713 INFO L470 AbstractCegarLoop]: Abstraction has 7570 states and 10061 transitions. [2021-11-03 04:13:53,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:53,714 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 10061 transitions. [2021-11-03 04:13:53,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 04:13:53,717 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:53,717 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:13:53,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:53,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 04:13:54,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:54,136 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 04:13:54,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:54,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1044843569, now seen corresponding path program 1 times [2021-11-03 04:13:54,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:54,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017122334] [2021-11-03 04:13:54,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:54,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:54,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:54,146 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:54,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:14:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:06,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:14:06,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:07,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:14:07,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:14:07,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:07,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017122334] [2021-11-03 04:14:07,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017122334] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:07,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1534299004] [2021-11-03 04:14:07,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:07,881 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:14:07,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:14:07,888 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:14:07,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-03 04:14:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:10,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:14:10,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:14:11,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:14:12,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1534299004] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:12,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:14:12,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 04:14:12,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304589014] [2021-11-03 04:14:12,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:14:12,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:12,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:14:12,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:14:12,221 INFO L87 Difference]: Start difference. First operand 7570 states and 10061 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:13,780 INFO L93 Difference]: Finished difference Result 31794 states and 42146 transitions. [2021-11-03 04:14:13,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:14:13,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 04:14:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:13,898 INFO L225 Difference]: With dead ends: 31794 [2021-11-03 04:14:13,901 INFO L226 Difference]: Without dead ends: 24269 [2021-11-03 04:14:13,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:14:13,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24269 states. [2021-11-03 04:14:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24269 to 12446. [2021-11-03 04:14:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12446 states, 12430 states have (on average 1.327835880933226) internal successors, (16505), 12445 states have internal predecessors, (16505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12446 states to 12446 states and 16505 transitions. [2021-11-03 04:14:14,483 INFO L78 Accepts]: Start accepts. Automaton has 12446 states and 16505 transitions. Word has length 82 [2021-11-03 04:14:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:14,487 INFO L470 AbstractCegarLoop]: Abstraction has 12446 states and 16505 transitions. [2021-11-03 04:14:14,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:14,488 INFO L276 IsEmpty]: Start isEmpty. Operand 12446 states and 16505 transitions. [2021-11-03 04:14:14,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 04:14:14,493 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:14,493 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:14:14,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:14,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:14,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:14:14,907 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 04:14:14,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2132101336, now seen corresponding path program 1 times [2021-11-03 04:14:14,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:14,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813864792] [2021-11-03 04:14:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:14,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:14,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:14,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:14,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:14:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:27,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 2341 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:14:27,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:14:28,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:14:28,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:28,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813864792] [2021-11-03 04:14:28,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813864792] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:28,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1099285604] [2021-11-03 04:14:28,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:28,680 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:14:28,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:14:28,682 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:14:28,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 04:14:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:31,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2341 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:14:31,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:14:32,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:14:33,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1099285604] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:33,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:14:33,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 04:14:33,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782267781] [2021-11-03 04:14:33,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:14:33,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:33,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:14:33,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:14:33,108 INFO L87 Difference]: Start difference. First operand 12446 states and 16505 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:34,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:34,661 INFO L93 Difference]: Finished difference Result 56172 states and 74366 transitions. [2021-11-03 04:14:34,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:14:34,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-03 04:14:34,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:34,767 INFO L225 Difference]: With dead ends: 56172 [2021-11-03 04:14:34,767 INFO L226 Difference]: Without dead ends: 43771 [2021-11-03 04:14:34,792 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:14:34,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43771 states. [2021-11-03 04:14:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43771 to 24165. [2021-11-03 04:14:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24165 states, 24149 states have (on average 1.327384156693859) internal successors, (32055), 24164 states have internal predecessors, (32055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24165 states to 24165 states and 32055 transitions. [2021-11-03 04:14:35,941 INFO L78 Accepts]: Start accepts. Automaton has 24165 states and 32055 transitions. Word has length 83 [2021-11-03 04:14:35,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:35,942 INFO L470 AbstractCegarLoop]: Abstraction has 24165 states and 32055 transitions. [2021-11-03 04:14:35,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 24165 states and 32055 transitions. [2021-11-03 04:14:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 04:14:35,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:35,949 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:14:36,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:36,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:36,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:14:36,372 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 04:14:36,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:36,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1477354827, now seen corresponding path program 1 times [2021-11-03 04:14:36,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:36,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985280618] [2021-11-03 04:14:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:36,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:36,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:36,378 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:36,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:14:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:49,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:14:49,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:14:49,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:14:50,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:50,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985280618] [2021-11-03 04:14:50,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985280618] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:14:50,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [297799508] [2021-11-03 04:14:50,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:50,172 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:14:50,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:14:50,173 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:14:50,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 04:14:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:53,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:14:53,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:14:54,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:14:54,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [297799508] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:54,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:14:54,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 04:14:54,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184916848] [2021-11-03 04:14:54,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:14:54,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:54,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:14:54,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:14:54,812 INFO L87 Difference]: Start difference. First operand 24165 states and 32055 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:56,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:56,774 INFO L93 Difference]: Finished difference Result 110201 states and 145930 transitions. [2021-11-03 04:14:56,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:14:56,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-03 04:14:56,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:56,935 INFO L225 Difference]: With dead ends: 110201 [2021-11-03 04:14:56,935 INFO L226 Difference]: Without dead ends: 86081 [2021-11-03 04:14:56,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:14:57,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86081 states. [2021-11-03 04:14:58,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86081 to 46956. [2021-11-03 04:14:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46956 states, 46940 states have (on average 1.3266510438858117) internal successors, (62273), 46955 states have internal predecessors, (62273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:58,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46956 states to 46956 states and 62273 transitions. [2021-11-03 04:14:58,830 INFO L78 Accepts]: Start accepts. Automaton has 46956 states and 62273 transitions. Word has length 84 [2021-11-03 04:14:58,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:58,830 INFO L470 AbstractCegarLoop]: Abstraction has 46956 states and 62273 transitions. [2021-11-03 04:14:58,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:58,831 INFO L276 IsEmpty]: Start isEmpty. Operand 46956 states and 62273 transitions. [2021-11-03 04:14:58,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 04:14:58,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:58,835 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:14:58,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:59,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:59,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:59,253 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 04:14:59,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:59,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1639916686, now seen corresponding path program 1 times [2021-11-03 04:14:59,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:59,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190305565] [2021-11-03 04:14:59,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:59,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:59,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:59,260 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:59,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:15:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:12,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:15:12,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:15:12,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:15:13,434 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:15:13,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190305565] [2021-11-03 04:15:13,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190305565] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:15:13,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [57070508] [2021-11-03 04:15:13,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:15:13,435 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:15:13,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:15:13,440 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:15:13,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 04:15:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:16,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:15:16,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:15:17,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:15:18,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [57070508] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:15:18,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:15:18,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 04:15:18,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464435486] [2021-11-03 04:15:18,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:15:18,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:15:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:15:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:15:18,187 INFO L87 Difference]: Start difference. First operand 46956 states and 62273 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:23,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:15:23,100 INFO L93 Difference]: Finished difference Result 216310 states and 286396 transitions. [2021-11-03 04:15:23,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:15:23,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-03 04:15:23,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:15:23,360 INFO L225 Difference]: With dead ends: 216310 [2021-11-03 04:15:23,360 INFO L226 Difference]: Without dead ends: 169399 [2021-11-03 04:15:23,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:15:23,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169399 states. [2021-11-03 04:15:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169399 to 91243. [2021-11-03 04:15:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91243 states, 91227 states have (on average 1.3257368980674582) internal successors, (120943), 91242 states have internal predecessors, (120943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91243 states to 91243 states and 120943 transitions. [2021-11-03 04:15:27,413 INFO L78 Accepts]: Start accepts. Automaton has 91243 states and 120943 transitions. Word has length 85 [2021-11-03 04:15:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:15:27,415 INFO L470 AbstractCegarLoop]: Abstraction has 91243 states and 120943 transitions. [2021-11-03 04:15:27,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:27,415 INFO L276 IsEmpty]: Start isEmpty. Operand 91243 states and 120943 transitions. [2021-11-03 04:15:27,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 04:15:27,419 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:15:27,419 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:15:27,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:15:27,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-03 04:15:27,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:15:27,836 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 04:15:27,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:15:27,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1002672741, now seen corresponding path program 1 times [2021-11-03 04:15:28,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:15:28,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013429250] [2021-11-03 04:15:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:15:28,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:15:28,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:15:28,064 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:15:28,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:15:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:41,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 2359 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:15:41,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:41,751 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 04:15:41,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 04:15:42,379 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:15:42,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013429250] [2021-11-03 04:15:42,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013429250] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:15:42,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2145925946] [2021-11-03 04:15:42,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:15:42,381 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:15:42,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:15:42,383 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:15:42,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 04:15:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:46,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 2359 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:15:46,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:46,991 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 04:15:46,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 04:15:47,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2145925946] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:15:47,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:15:47,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-03 04:15:47,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275606064] [2021-11-03 04:15:47,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:15:47,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:15:47,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:15:47,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:15:47,591 INFO L87 Difference]: Start difference. First operand 91243 states and 120943 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:54,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:15:54,821 INFO L93 Difference]: Finished difference Result 307605 states and 407376 transitions. [2021-11-03 04:15:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:15:54,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-03 04:15:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:15:55,349 INFO L225 Difference]: With dead ends: 307605 [2021-11-03 04:15:55,349 INFO L226 Difference]: Without dead ends: 216407 [2021-11-03 04:15:55,454 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:15:55,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216407 states. [2021-11-03 04:15:59,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216407 to 91323. [2021-11-03 04:16:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91323 states, 91307 states have (on average 1.325451498789797) internal successors, (121023), 91322 states have internal predecessors, (121023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:00,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91323 states to 91323 states and 121023 transitions. [2021-11-03 04:16:00,465 INFO L78 Accepts]: Start accepts. Automaton has 91323 states and 121023 transitions. Word has length 90 [2021-11-03 04:16:00,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:00,465 INFO L470 AbstractCegarLoop]: Abstraction has 91323 states and 121023 transitions. [2021-11-03 04:16:00,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:00,466 INFO L276 IsEmpty]: Start isEmpty. Operand 91323 states and 121023 transitions. [2021-11-03 04:16:00,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 04:16:00,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:00,469 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:00,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:00,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 04:16:00,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:00,884 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-03 04:16:00,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:00,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1073216815, now seen corresponding path program 1 times [2021-11-03 04:16:00,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:00,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699051812] [2021-11-03 04:16:00,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:00,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:00,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:00,891 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:00,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:16:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:14,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 2548 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:16:14,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:16:14,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:16:15,309 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:15,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699051812] [2021-11-03 04:16:15,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699051812] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:16:15,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [346768705] [2021-11-03 04:16:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:15,310 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:16:15,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:16:15,311 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:16:15,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc09cc2-672a-4af5-a41a-246e87b703ef/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 04:16:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:19,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 2548 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:16:19,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:16:19,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:16:19,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [346768705] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:19,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:16:19,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 04:16:19,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91607298] [2021-11-03 04:16:19,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:16:19,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:19,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:16:19,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:16:19,920 INFO L87 Difference]: Start difference. First operand 91323 states and 121023 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)