./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:46:12,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:46:12,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:46:12,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:46:12,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:46:12,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:46:12,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:46:12,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:46:12,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:46:12,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:46:12,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:46:12,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:46:12,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:46:12,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:46:12,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:46:12,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:46:12,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:46:12,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:46:12,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:46:12,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:46:12,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:46:12,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:46:12,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:46:12,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:46:12,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:46:12,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:46:12,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:46:12,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:46:12,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:46:12,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:46:12,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:46:12,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:46:12,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:46:12,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:46:12,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:46:12,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:46:12,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:46:12,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:46:12,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:46:12,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:46:12,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:46:12,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:46:12,430 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:46:12,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:46:12,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:46:12,432 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:46:12,432 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:46:12,433 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:46:12,433 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:46:12,433 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:46:12,434 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:46:12,434 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:46:12,434 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:46:12,435 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:46:12,435 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:46:12,435 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:46:12,436 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:46:12,436 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:46:12,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:46:12,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:46:12,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:46:12,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:46:12,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:46:12,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:46:12,439 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:46:12,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:46:12,439 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:46:12,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:46:12,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:46:12,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:46:12,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:46:12,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:46:12,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:46:12,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:46:12,442 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:46:12,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:46:12,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:46:12,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:46:12,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:46:12,443 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_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 [2021-11-19 14:46:12,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:46:12,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:46:12,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:46:12,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:46:12,852 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:46:12,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-19 14:46:12,934 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/data/00763a987/d16a17ce9bdc493f8ad79f30143bd539/FLAGfc830d157 [2021-11-19 14:46:13,998 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:46:13,999 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-19 14:46:14,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/data/00763a987/d16a17ce9bdc493f8ad79f30143bd539/FLAGfc830d157 [2021-11-19 14:46:14,347 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/data/00763a987/d16a17ce9bdc493f8ad79f30143bd539 [2021-11-19 14:46:14,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:46:14,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:46:14,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:46:14,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:46:14,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:46:14,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:14" (1/1) ... [2021-11-19 14:46:14,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1f33ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:14, skipping insertion in model container [2021-11-19 14:46:14,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:14" (1/1) ... [2021-11-19 14:46:14,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:46:14,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:46:15,959 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:16,348 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:16,363 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:16,378 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:16,379 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:16,945 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:16,969 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:16,987 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,049 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,050 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,056 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,057 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,059 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,060 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,144 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,181 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,265 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,299 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,313 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,320 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,345 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,352 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,472 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,480 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,493 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,501 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,509 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,516 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,544 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,546 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,554 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,568 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:46:17,641 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2021-11-19 14:46:17,785 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:17,811 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:46:17,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@28c49405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:17, skipping insertion in model container [2021-11-19 14:46:17,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:46:17,813 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:46:17,815 INFO L158 Benchmark]: Toolchain (without parser) took 3462.46ms. Allocated memory was 117.4MB in the beginning and 163.6MB in the end (delta: 46.1MB). Free memory was 71.9MB in the beginning and 98.3MB in the end (delta: -26.4MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. [2021-11-19 14:46:17,816 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 70.2MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:46:17,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3459.20ms. Allocated memory was 117.4MB in the beginning and 163.6MB in the end (delta: 46.1MB). Free memory was 71.9MB in the beginning and 98.3MB in the end (delta: -26.4MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. [2021-11-19 14:46:17,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 70.2MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3459.20ms. Allocated memory was 117.4MB in the beginning and 163.6MB in the end (delta: 46.1MB). Free memory was 71.9MB in the beginning and 98.3MB in the end (delta: -26.4MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4314]: 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_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:46:20,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:46:20,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:46:20,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:46:20,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:46:20,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:46:20,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:46:20,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:46:20,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:46:20,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:46:20,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:46:20,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:46:20,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:46:20,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:46:20,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:46:20,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:46:20,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:46:20,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:46:20,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:46:20,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:46:20,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:46:20,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:46:20,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:46:20,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:46:20,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:46:20,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:46:20,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:46:20,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:46:20,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:46:20,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:46:20,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:46:20,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:46:20,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:46:20,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:46:20,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:46:20,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:46:20,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:46:20,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:46:20,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:46:20,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:46:20,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:46:20,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:46:20,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:46:20,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:46:20,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:46:20,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:46:20,938 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:46:20,939 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:46:20,939 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:46:20,939 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:46:20,941 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:46:20,941 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:46:20,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:46:20,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:46:20,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:46:20,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:46:20,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:46:20,947 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:46:20,947 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:46:20,947 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:46:20,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:46:20,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:46:20,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:46:20,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:46:20,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:46:20,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:46:20,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:46:20,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:46:20,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:46:20,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:46:20,951 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:46:20,951 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:46:20,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:46:20,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:46:20,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:46:20,952 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_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 [2021-11-19 14:46:21,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:46:21,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:46:21,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:46:21,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:46:21,479 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:46:21,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-19 14:46:21,574 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/data/c8260a41e/4d7b5deba4ad4d77abaaef22a48fc4b3/FLAG44451a345 [2021-11-19 14:46:22,885 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:46:22,887 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-19 14:46:22,981 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/data/c8260a41e/4d7b5deba4ad4d77abaaef22a48fc4b3/FLAG44451a345 [2021-11-19 14:46:23,101 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/data/c8260a41e/4d7b5deba4ad4d77abaaef22a48fc4b3 [2021-11-19 14:46:23,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:46:23,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:46:23,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:46:23,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:46:23,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:46:23,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:23" (1/1) ... [2021-11-19 14:46:23,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605769b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:23, skipping insertion in model container [2021-11-19 14:46:23,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:23" (1/1) ... [2021-11-19 14:46:23,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:46:23,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:46:26,187 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2021-11-19 14:46:26,332 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:26,371 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:46:26,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:46:27,047 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2021-11-19 14:46:27,069 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:27,091 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:46:27,777 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2021-11-19 14:46:27,789 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:27,989 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:46:27,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:27 WrapperNode [2021-11-19 14:46:27,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:46:27,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:46:27,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:46:27,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:46:27,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:27" (1/1) ... [2021-11-19 14:46:28,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:27" (1/1) ... [2021-11-19 14:46:28,443 INFO L137 Inliner]: procedures = 288, calls = 4073, calls flagged for inlining = 105, calls inlined = 96, statements flattened = 8664 [2021-11-19 14:46:28,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:46:28,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:46:28,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:46:28,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:46:28,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:27" (1/1) ... [2021-11-19 14:46:28,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:27" (1/1) ... [2021-11-19 14:46:28,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:27" (1/1) ... [2021-11-19 14:46:28,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:27" (1/1) ... [2021-11-19 14:46:28,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:27" (1/1) ... [2021-11-19 14:46:28,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:27" (1/1) ... [2021-11-19 14:46:28,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:27" (1/1) ... [2021-11-19 14:46:29,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:46:29,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:46:29,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:46:29,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:46:29,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:27" (1/1) ... [2021-11-19 14:46:29,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:46:29,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:46:29,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:46:29,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:46:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-19 14:46:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-19 14:46:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2021-11-19 14:46:29,180 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2021-11-19 14:46:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:46:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-19 14:46:29,180 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-19 14:46:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-19 14:46:29,181 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-19 14:46:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-19 14:46:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:46:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:46:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:46:29,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:46:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:46:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2021-11-19 14:46:29,182 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2021-11-19 14:46:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-19 14:46:29,182 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-19 14:46:29,182 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2021-11-19 14:46:29,183 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2021-11-19 14:46:29,183 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-19 14:46:29,183 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-19 14:46:29,183 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2021-11-19 14:46:29,183 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2021-11-19 14:46:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2021-11-19 14:46:29,184 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2021-11-19 14:46:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:46:29,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:46:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2021-11-19 14:46:29,184 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2021-11-19 14:46:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2021-11-19 14:46:29,185 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2021-11-19 14:46:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2021-11-19 14:46:29,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2021-11-19 14:46:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2021-11-19 14:46:29,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2021-11-19 14:46:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-19 14:46:29,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-19 14:46:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-19 14:46:29,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-19 14:46:29,186 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-11-19 14:46:29,187 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-11-19 14:46:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2021-11-19 14:46:29,187 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2021-11-19 14:46:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2021-11-19 14:46:29,187 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2021-11-19 14:46:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-19 14:46:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-19 14:46:29,188 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2021-11-19 14:46:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2021-11-19 14:46:29,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:46:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:46:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2021-11-19 14:46:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2021-11-19 14:46:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2021-11-19 14:46:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2021-11-19 14:46:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-19 14:46:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-19 14:46:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2021-11-19 14:46:29,190 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2021-11-19 14:46:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2021-11-19 14:46:29,190 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2021-11-19 14:46:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2021-11-19 14:46:29,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2021-11-19 14:46:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2021-11-19 14:46:29,191 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2021-11-19 14:46:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2021-11-19 14:46:29,191 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2021-11-19 14:46:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:46:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2021-11-19 14:46:29,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2021-11-19 14:46:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 14:46:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2021-11-19 14:46:29,192 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2021-11-19 14:46:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-19 14:46:29,193 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-19 14:46:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2021-11-19 14:46:29,193 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2021-11-19 14:46:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:46:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2021-11-19 14:46:29,193 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2021-11-19 14:46:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2021-11-19 14:46:29,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2021-11-19 14:46:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-19 14:46:29,194 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-19 14:46:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2021-11-19 14:46:29,194 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2021-11-19 14:46:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-11-19 14:46:29,195 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-11-19 14:46:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2021-11-19 14:46:29,195 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2021-11-19 14:46:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:46:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:46:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:46:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:46:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:46:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2021-11-19 14:46:29,196 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2021-11-19 14:46:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:46:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-19 14:46:29,197 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-19 14:46:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 14:46:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:46:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:46:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:46:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-19 14:46:29,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-19 14:46:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-19 14:46:29,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-19 14:46:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2021-11-19 14:46:29,199 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2021-11-19 14:46:29,199 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-19 14:46:29,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-19 14:46:29,199 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2021-11-19 14:46:29,199 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2021-11-19 14:46:29,200 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2021-11-19 14:46:29,200 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2021-11-19 14:46:29,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-19 14:46:29,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-19 14:46:29,200 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-19 14:46:29,201 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-19 14:46:29,201 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2021-11-19 14:46:29,201 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2021-11-19 14:46:29,201 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-11-19 14:46:29,201 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-11-19 14:46:29,201 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2021-11-19 14:46:29,202 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2021-11-19 14:46:29,202 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2021-11-19 14:46:29,202 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2021-11-19 14:46:29,202 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2021-11-19 14:46:29,202 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2021-11-19 14:46:29,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:46:29,203 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:46:29,203 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2021-11-19 14:46:29,203 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2021-11-19 14:46:29,203 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2021-11-19 14:46:29,203 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2021-11-19 14:46:29,203 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2021-11-19 14:46:29,203 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2021-11-19 14:46:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2021-11-19 14:46:29,204 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2021-11-19 14:46:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 14:46:29,204 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 14:46:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2021-11-19 14:46:29,204 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2021-11-19 14:46:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-19 14:46:29,205 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-19 14:46:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-19 14:46:29,205 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-19 14:46:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:46:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:46:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:46:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2021-11-19 14:46:29,206 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2021-11-19 14:46:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:46:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2021-11-19 14:46:29,206 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2021-11-19 14:46:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2021-11-19 14:46:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2021-11-19 14:46:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:46:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:46:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2021-11-19 14:46:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2021-11-19 14:46:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:46:29,208 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-11-19 14:46:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-11-19 14:46:29,208 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2021-11-19 14:46:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2021-11-19 14:46:29,208 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-19 14:46:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-19 14:46:29,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:46:29,209 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2021-11-19 14:46:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2021-11-19 14:46:29,209 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2021-11-19 14:46:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2021-11-19 14:46:29,209 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-11-19 14:46:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-11-19 14:46:29,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:46:29,210 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 14:46:29,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:46:29,210 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2021-11-19 14:46:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2021-11-19 14:46:29,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:46:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:46:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2021-11-19 14:46:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2021-11-19 14:46:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2021-11-19 14:46:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2021-11-19 14:46:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-19 14:46:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-19 14:46:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-11-19 14:46:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-11-19 14:46:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2021-11-19 14:46:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2021-11-19 14:46:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2021-11-19 14:46:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2021-11-19 14:46:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2021-11-19 14:46:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2021-11-19 14:46:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2021-11-19 14:46:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2021-11-19 14:46:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-19 14:46:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-19 14:46:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2021-11-19 14:46:29,214 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2021-11-19 14:46:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2021-11-19 14:46:29,214 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2021-11-19 14:46:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2021-11-19 14:46:29,214 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2021-11-19 14:46:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:46:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2021-11-19 14:46:29,215 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2021-11-19 14:46:29,215 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2021-11-19 14:46:29,215 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2021-11-19 14:46:29,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:46:29,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:46:29,215 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-19 14:46:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-19 14:46:30,289 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:46:30,292 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:48:55,199 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:48:55,233 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:48:55,234 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:48:55,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:48:55 BoogieIcfgContainer [2021-11-19 14:48:55,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:48:55,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:48:55,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:48:55,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:48:55,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:46:23" (1/3) ... [2021-11-19 14:48:55,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cad24b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:48:55, skipping insertion in model container [2021-11-19 14:48:55,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:27" (2/3) ... [2021-11-19 14:48:55,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cad24b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:48:55, skipping insertion in model container [2021-11-19 14:48:55,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:48:55" (3/3) ... [2021-11-19 14:48:55,250 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-19 14:48:55,256 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:48:55,257 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:48:55,332 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:48:55,341 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:48:55,341 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:48:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 2992 states, 2295 states have (on average 1.45359477124183) internal successors, (3336), 2321 states have internal predecessors, (3336), 603 states have call successors, (603), 92 states have call predecessors, (603), 92 states have return successors, (603), 600 states have call predecessors, (603), 603 states have call successors, (603) [2021-11-19 14:48:55,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 14:48:55,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:55,452 INFO L514 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] [2021-11-19 14:48:55,453 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:48:55,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:55,459 INFO L85 PathProgramCache]: Analyzing trace with hash 217154096, now seen corresponding path program 1 times [2021-11-19 14:48:55,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:55,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112338473] [2021-11-19 14:48:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:55,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:55,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:55,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:55,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:48:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:57,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:48:57,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:48:57,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:48:57,663 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:57,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112338473] [2021-11-19 14:48:57,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112338473] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:48:57,665 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:48:57,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-19 14:48:57,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006139063] [2021-11-19 14:48:57,668 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:48:57,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:48:57,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:57,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:48:57,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:48:57,719 INFO L87 Difference]: Start difference. First operand has 2992 states, 2295 states have (on average 1.45359477124183) internal successors, (3336), 2321 states have internal predecessors, (3336), 603 states have call successors, (603), 92 states have call predecessors, (603), 92 states have return successors, (603), 600 states have call predecessors, (603), 603 states have call successors, (603) Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 14:49:01,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:49:01,980 INFO L93 Difference]: Finished difference Result 5975 states and 9294 transitions. [2021-11-19 14:49:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:49:01,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 38 [2021-11-19 14:49:01,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:49:02,051 INFO L225 Difference]: With dead ends: 5975 [2021-11-19 14:49:02,052 INFO L226 Difference]: Without dead ends: 2981 [2021-11-19 14:49:02,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:49:02,111 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 7847 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7847 SdHoareTripleChecker+Valid, 4528 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1197 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:49:02,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7847 Valid, 4528 Invalid, 1198 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1197 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 14:49:02,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2021-11-19 14:49:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2981. [2021-11-19 14:49:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2286 states have (on average 1.4510061242344707) internal successors, (3317), 2310 states have internal predecessors, (3317), 603 states have call successors, (603), 92 states have call predecessors, (603), 91 states have return successors, (595), 592 states have call predecessors, (595), 595 states have call successors, (595) [2021-11-19 14:49:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 4515 transitions. [2021-11-19 14:49:02,500 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 4515 transitions. Word has length 38 [2021-11-19 14:49:02,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:49:02,502 INFO L470 AbstractCegarLoop]: Abstraction has 2981 states and 4515 transitions. [2021-11-19 14:49:02,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 14:49:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 4515 transitions. [2021-11-19 14:49:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 14:49:02,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:49:02,506 INFO L514 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] [2021-11-19 14:49:02,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:49:02,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:49:02,732 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:49:02,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:49:02,733 INFO L85 PathProgramCache]: Analyzing trace with hash 239786350, now seen corresponding path program 1 times [2021-11-19 14:49:02,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:49:02,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239761386] [2021-11-19 14:49:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:49:02,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:49:02,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:49:02,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:49:02,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:49:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:49:04,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:49:04,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:49:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:49:04,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:49:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:49:05,177 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:49:05,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239761386] [2021-11-19 14:49:05,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239761386] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:49:05,177 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:49:05,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-19 14:49:05,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955898088] [2021-11-19 14:49:05,178 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:49:05,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:49:05,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:49:05,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:49:05,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:49:05,181 INFO L87 Difference]: Start difference. First operand 2981 states and 4515 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 14:49:07,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:49:08,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:49:08,141 INFO L93 Difference]: Finished difference Result 8841 states and 13392 transitions. [2021-11-19 14:49:08,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:49:08,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 38 [2021-11-19 14:49:08,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:49:08,247 INFO L225 Difference]: With dead ends: 8841 [2021-11-19 14:49:08,248 INFO L226 Difference]: Without dead ends: 5868 [2021-11-19 14:49:08,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:49:08,283 INFO L933 BasicCegarLoop]: 5084 mSDtfsCounter, 4413 mSDsluCounter, 8924 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4413 SdHoareTripleChecker+Valid, 14008 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:49:08,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4413 Valid, 14008 Invalid, 9 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:49:08,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5868 states. [2021-11-19 14:49:08,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5868 to 5851. [2021-11-19 14:49:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5851 states, 4496 states have (on average 1.4519572953736655) internal successors, (6528), 4533 states have internal predecessors, (6528), 1174 states have call successors, (1174), 181 states have call predecessors, (1174), 180 states have return successors, (1166), 1160 states have call predecessors, (1166), 1166 states have call successors, (1166) [2021-11-19 14:49:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 8868 transitions. [2021-11-19 14:49:08,949 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 8868 transitions. Word has length 38 [2021-11-19 14:49:08,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:49:08,950 INFO L470 AbstractCegarLoop]: Abstraction has 5851 states and 8868 transitions. [2021-11-19 14:49:08,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 14:49:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 8868 transitions. [2021-11-19 14:49:08,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 14:49:08,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:49:08,956 INFO L514 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] [2021-11-19 14:49:08,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:49:09,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:49:09,180 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:49:09,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:49:09,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1625989744, now seen corresponding path program 1 times [2021-11-19 14:49:09,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:49:09,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99096722] [2021-11-19 14:49:09,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:49:09,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:49:09,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:49:09,187 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:49:09,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:49:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:49:11,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:49:11,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:49:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:49:11,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:49:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:49:11,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:49:11,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99096722] [2021-11-19 14:49:11,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99096722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:49:11,755 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:49:11,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-19 14:49:11,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829000982] [2021-11-19 14:49:11,756 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:49:11,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:49:11,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:49:11,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:49:11,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:49:11,758 INFO L87 Difference]: Start difference. First operand 5851 states and 8868 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 14:49:15,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:49:15,895 INFO L93 Difference]: Finished difference Result 11693 states and 17724 transitions. [2021-11-19 14:49:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:49:15,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 38 [2021-11-19 14:49:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:49:15,973 INFO L225 Difference]: With dead ends: 11693 [2021-11-19 14:49:15,974 INFO L226 Difference]: Without dead ends: 5851 [2021-11-19 14:49:16,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:49:16,029 INFO L933 BasicCegarLoop]: 4512 mSDtfsCounter, 7811 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7811 SdHoareTripleChecker+Valid, 4512 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1197 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:49:16,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7811 Valid, 4512 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1197 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-19 14:49:16,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5851 states. [2021-11-19 14:49:16,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5851 to 5851. [2021-11-19 14:49:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5851 states, 4496 states have (on average 1.4517348754448398) internal successors, (6527), 4533 states have internal predecessors, (6527), 1174 states have call successors, (1174), 181 states have call predecessors, (1174), 180 states have return successors, (1166), 1160 states have call predecessors, (1166), 1166 states have call successors, (1166) [2021-11-19 14:49:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 8867 transitions. [2021-11-19 14:49:16,492 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 8867 transitions. Word has length 38 [2021-11-19 14:49:16,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:49:16,493 INFO L470 AbstractCegarLoop]: Abstraction has 5851 states and 8867 transitions. [2021-11-19 14:49:16,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 14:49:16,495 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 8867 transitions. [2021-11-19 14:49:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 14:49:16,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:49:16,499 INFO L514 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] [2021-11-19 14:49:16,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:49:16,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:49:16,725 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:49:16,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:49:16,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1116516654, now seen corresponding path program 1 times [2021-11-19 14:49:16,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:49:16,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360001526] [2021-11-19 14:49:16,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:49:16,728 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:49:16,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:49:16,729 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:49:16,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:49:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:49:18,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:49:18,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:49:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:49:18,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:49:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:49:18,476 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:49:18,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360001526] [2021-11-19 14:49:18,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360001526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:49:18,479 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:49:18,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:49:18,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153989015] [2021-11-19 14:49:18,479 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:49:18,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:49:18,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:49:18,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:49:18,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:49:18,481 INFO L87 Difference]: Start difference. First operand 5851 states and 8867 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 14:49:20,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:49:20,338 INFO L93 Difference]: Finished difference Result 18264 states and 28317 transitions. [2021-11-19 14:49:20,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:49:20,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2021-11-19 14:49:20,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:49:20,483 INFO L225 Difference]: With dead ends: 18264 [2021-11-19 14:49:20,484 INFO L226 Difference]: Without dead ends: 12453 [2021-11-19 14:49:20,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:49:20,526 INFO L933 BasicCegarLoop]: 7458 mSDtfsCounter, 3908 mSDsluCounter, 11602 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 19060 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:49:20,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4353 Valid, 19060 Invalid, 463 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [447 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:49:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12453 states. [2021-11-19 14:49:21,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12453 to 5853. [2021-11-19 14:49:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5853 states, 4498 states have (on average 1.4515340151178302) internal successors, (6529), 4535 states have internal predecessors, (6529), 1174 states have call successors, (1174), 181 states have call predecessors, (1174), 180 states have return successors, (1166), 1160 states have call predecessors, (1166), 1166 states have call successors, (1166) [2021-11-19 14:49:21,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5853 states to 5853 states and 8869 transitions. [2021-11-19 14:49:21,245 INFO L78 Accepts]: Start accepts. Automaton has 5853 states and 8869 transitions. Word has length 38 [2021-11-19 14:49:21,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:49:21,248 INFO L470 AbstractCegarLoop]: Abstraction has 5853 states and 8869 transitions. [2021-11-19 14:49:21,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 14:49:21,248 INFO L276 IsEmpty]: Start isEmpty. Operand 5853 states and 8869 transitions. [2021-11-19 14:49:21,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 14:49:21,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:49:21,255 INFO L514 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] [2021-11-19 14:49:21,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:49:21,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:49:21,480 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:49:21,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:49:21,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1065775179, now seen corresponding path program 1 times [2021-11-19 14:49:21,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:49:21,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351931607] [2021-11-19 14:49:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:49:21,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:49:21,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:49:21,486 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:49:21,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:49:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:49:22,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 14:49:22,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:49:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:49:25,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:49:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:49:30,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:49:30,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351931607] [2021-11-19 14:49:30,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351931607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:49:30,028 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:49:30,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 20 [2021-11-19 14:49:30,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438691800] [2021-11-19 14:49:30,029 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:49:30,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 14:49:30,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:49:30,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 14:49:30,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:49:30,031 INFO L87 Difference]: Start difference. First operand 5853 states and 8869 transitions. Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 6 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-19 14:50:43,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:43,329 INFO L93 Difference]: Finished difference Result 19734 states and 30148 transitions. [2021-11-19 14:50:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 14:50:43,330 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 6 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2021-11-19 14:50:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:43,540 INFO L225 Difference]: With dead ends: 19734 [2021-11-19 14:50:43,541 INFO L226 Difference]: Without dead ends: 13904 [2021-11-19 14:50:43,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2021-11-19 14:50:43,573 INFO L933 BasicCegarLoop]: 6209 mSDtfsCounter, 12718 mSDsluCounter, 68554 mSDsCounter, 0 mSdLazyCounter, 7459 mSolverCounterSat, 2123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12963 SdHoareTripleChecker+Valid, 74763 SdHoareTripleChecker+Invalid, 9582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2123 IncrementalHoareTripleChecker+Valid, 7459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:43,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12963 Valid, 74763 Invalid, 9582 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2123 Valid, 7459 Invalid, 0 Unknown, 0 Unchecked, 68.9s Time] [2021-11-19 14:50:43,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13904 states. [2021-11-19 14:50:44,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13904 to 8743. [2021-11-19 14:50:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8743 states, 6724 states have (on average 1.4516656751933372) internal successors, (9761), 6776 states have internal predecessors, (9761), 1749 states have call successors, (1749), 269 states have call predecessors, (1749), 269 states have return successors, (1749), 1733 states have call predecessors, (1749), 1741 states have call successors, (1749) [2021-11-19 14:50:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8743 states to 8743 states and 13259 transitions. [2021-11-19 14:50:44,414 INFO L78 Accepts]: Start accepts. Automaton has 8743 states and 13259 transitions. Word has length 43 [2021-11-19 14:50:44,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:44,416 INFO L470 AbstractCegarLoop]: Abstraction has 8743 states and 13259 transitions. [2021-11-19 14:50:44,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 6 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-19 14:50:44,416 INFO L276 IsEmpty]: Start isEmpty. Operand 8743 states and 13259 transitions. [2021-11-19 14:50:44,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 14:50:44,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:44,418 INFO L514 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] [2021-11-19 14:50:44,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:50:44,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:44,619 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:44,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:44,619 INFO L85 PathProgramCache]: Analyzing trace with hash -477487541, now seen corresponding path program 1 times [2021-11-19 14:50:44,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:44,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339811956] [2021-11-19 14:50:44,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:44,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:44,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:44,622 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:44,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:50:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:46,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:50:46,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:46,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:46,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:46,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339811956] [2021-11-19 14:50:46,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339811956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:46,938 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:46,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:50:46,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672551373] [2021-11-19 14:50:46,939 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:46,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:50:46,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:46,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:50:46,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:46,940 INFO L87 Difference]: Start difference. First operand 8743 states and 13259 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:50:47,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:47,489 INFO L93 Difference]: Finished difference Result 8745 states and 13260 transitions. [2021-11-19 14:50:47,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:50:47,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 46 [2021-11-19 14:50:47,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:47,559 INFO L225 Difference]: With dead ends: 8745 [2021-11-19 14:50:47,559 INFO L226 Difference]: Without dead ends: 8742 [2021-11-19 14:50:47,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:47,570 INFO L933 BasicCegarLoop]: 4510 mSDtfsCounter, 4468 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4468 SdHoareTripleChecker+Valid, 4510 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:47,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4468 Valid, 4510 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:50:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8742 states. [2021-11-19 14:50:48,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8742 to 8742. [2021-11-19 14:50:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8742 states, 6724 states have (on average 1.4515169541939321) internal successors, (9760), 6775 states have internal predecessors, (9760), 1748 states have call successors, (1748), 269 states have call predecessors, (1748), 269 states have return successors, (1749), 1733 states have call predecessors, (1749), 1741 states have call successors, (1749) [2021-11-19 14:50:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8742 states to 8742 states and 13257 transitions. [2021-11-19 14:50:48,379 INFO L78 Accepts]: Start accepts. Automaton has 8742 states and 13257 transitions. Word has length 46 [2021-11-19 14:50:48,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:48,380 INFO L470 AbstractCegarLoop]: Abstraction has 8742 states and 13257 transitions. [2021-11-19 14:50:48,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:50:48,381 INFO L276 IsEmpty]: Start isEmpty. Operand 8742 states and 13257 transitions. [2021-11-19 14:50:48,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-19 14:50:48,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:48,384 INFO L514 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] [2021-11-19 14:50:48,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:50:48,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:48,600 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:48,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1918336085, now seen corresponding path program 1 times [2021-11-19 14:50:48,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:48,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796533076] [2021-11-19 14:50:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:48,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:48,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:48,603 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:48,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:50:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:49,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:50:49,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:50,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:50,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:50,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796533076] [2021-11-19 14:50:50,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796533076] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:50,840 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:50,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:50:50,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390624012] [2021-11-19 14:50:50,841 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:50,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:50:50,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:50,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:50:50,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:50,842 INFO L87 Difference]: Start difference. First operand 8742 states and 13257 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:50:52,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:52,429 INFO L93 Difference]: Finished difference Result 26017 states and 39508 transitions. [2021-11-19 14:50:52,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:50:52,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 47 [2021-11-19 14:50:52,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:52,570 INFO L225 Difference]: With dead ends: 26017 [2021-11-19 14:50:52,571 INFO L226 Difference]: Without dead ends: 17345 [2021-11-19 14:50:52,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:52,622 INFO L933 BasicCegarLoop]: 6288 mSDtfsCounter, 4463 mSDsluCounter, 4421 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4463 SdHoareTripleChecker+Valid, 10709 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:52,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4463 Valid, 10709 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:50:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17345 states. [2021-11-19 14:50:54,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17345 to 17310. [2021-11-19 14:50:54,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17310 states, 13337 states have (on average 1.4536252530554097) internal successors, (19387), 13440 states have internal predecessors, (19387), 3441 states have call successors, (3441), 532 states have call predecessors, (3441), 531 states have return successors, (3456), 3405 states have call predecessors, (3456), 3430 states have call successors, (3456) [2021-11-19 14:50:54,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17310 states to 17310 states and 26284 transitions. [2021-11-19 14:50:54,489 INFO L78 Accepts]: Start accepts. Automaton has 17310 states and 26284 transitions. Word has length 47 [2021-11-19 14:50:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:54,492 INFO L470 AbstractCegarLoop]: Abstraction has 17310 states and 26284 transitions. [2021-11-19 14:50:54,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:50:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 17310 states and 26284 transitions. [2021-11-19 14:50:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-19 14:50:54,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:54,495 INFO L514 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] [2021-11-19 14:50:54,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-19 14:50:54,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:50:54,708 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:54,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:54,709 INFO L85 PathProgramCache]: Analyzing trace with hash 660004174, now seen corresponding path program 1 times [2021-11-19 14:50:54,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:50:54,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216584455] [2021-11-19 14:50:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:54,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:50:54,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:50:54,714 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:50:54,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:50:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:56,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:50:56,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:50:56,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:56,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:50:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:57,048 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:50:57,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216584455] [2021-11-19 14:50:57,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216584455] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:57,049 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:57,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:50:57,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106154988] [2021-11-19 14:50:57,049 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:57,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:50:57,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:50:57,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:50:57,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:57,051 INFO L87 Difference]: Start difference. First operand 17310 states and 26284 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:50:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:58,563 INFO L93 Difference]: Finished difference Result 17312 states and 26285 transitions. [2021-11-19 14:50:58,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:50:58,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 48 [2021-11-19 14:50:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:58,659 INFO L225 Difference]: With dead ends: 17312 [2021-11-19 14:50:58,659 INFO L226 Difference]: Without dead ends: 17309 [2021-11-19 14:50:58,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:58,669 INFO L933 BasicCegarLoop]: 4508 mSDtfsCounter, 4464 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4464 SdHoareTripleChecker+Valid, 4508 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:58,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4464 Valid, 4508 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:50:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17309 states. [2021-11-19 14:50:59,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17309 to 17309. [2021-11-19 14:50:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17309 states, 13337 states have (on average 1.4535502736747394) internal successors, (19386), 13439 states have internal predecessors, (19386), 3440 states have call successors, (3440), 532 states have call predecessors, (3440), 531 states have return successors, (3456), 3405 states have call predecessors, (3456), 3430 states have call successors, (3456) [2021-11-19 14:50:59,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17309 states to 17309 states and 26282 transitions. [2021-11-19 14:50:59,913 INFO L78 Accepts]: Start accepts. Automaton has 17309 states and 26282 transitions. Word has length 48 [2021-11-19 14:50:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:59,914 INFO L470 AbstractCegarLoop]: Abstraction has 17309 states and 26282 transitions. [2021-11-19 14:50:59,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:50:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 17309 states and 26282 transitions. [2021-11-19 14:50:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-19 14:50:59,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:59,916 INFO L514 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] [2021-11-19 14:50:59,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:00,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:00,144 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:00,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1015821554, now seen corresponding path program 1 times [2021-11-19 14:51:00,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:00,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212403174] [2021-11-19 14:51:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:00,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:00,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:00,148 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:00,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:51:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:01,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:51:01,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:02,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:02,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:02,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212403174] [2021-11-19 14:51:02,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212403174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:02,554 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:02,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:51:02,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818829151] [2021-11-19 14:51:02,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:02,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:51:02,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:02,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:51:02,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:51:02,556 INFO L87 Difference]: Start difference. First operand 17309 states and 26282 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:51:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:03,995 INFO L93 Difference]: Finished difference Result 24693 states and 36833 transitions. [2021-11-19 14:51:03,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:51:03,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 49 [2021-11-19 14:51:03,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:04,197 INFO L225 Difference]: With dead ends: 24693 [2021-11-19 14:51:04,198 INFO L226 Difference]: Without dead ends: 24599 [2021-11-19 14:51:04,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:51:04,234 INFO L933 BasicCegarLoop]: 4764 mSDtfsCounter, 2788 mSDsluCounter, 3432 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2788 SdHoareTripleChecker+Valid, 8196 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:04,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2788 Valid, 8196 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:51:04,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24599 states. [2021-11-19 14:51:06,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24599 to 24591. [2021-11-19 14:51:06,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24591 states, 18716 states have (on average 1.4297926907458858) internal successors, (26760), 18852 states have internal predecessors, (26760), 4944 states have call successors, (4944), 931 states have call predecessors, (4944), 930 states have return successors, (4961), 4907 states have call predecessors, (4961), 4936 states have call successors, (4961) [2021-11-19 14:51:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24591 states to 24591 states and 36665 transitions. [2021-11-19 14:51:06,381 INFO L78 Accepts]: Start accepts. Automaton has 24591 states and 36665 transitions. Word has length 49 [2021-11-19 14:51:06,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:06,382 INFO L470 AbstractCegarLoop]: Abstraction has 24591 states and 36665 transitions. [2021-11-19 14:51:06,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:51:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 24591 states and 36665 transitions. [2021-11-19 14:51:06,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-19 14:51:06,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:06,400 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:51:06,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:06,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:06,624 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:06,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:06,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1027358375, now seen corresponding path program 1 times [2021-11-19 14:51:06,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:06,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265763997] [2021-11-19 14:51:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:06,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:06,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:06,629 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:06,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:51:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:08,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:51:08,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:08,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:51:08,769 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:08,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265763997] [2021-11-19 14:51:08,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265763997] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:08,769 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:08,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:51:08,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766040125] [2021-11-19 14:51:08,769 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:08,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:51:08,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:08,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:51:08,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:08,771 INFO L87 Difference]: Start difference. First operand 24591 states and 36665 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:51:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:10,213 INFO L93 Difference]: Finished difference Result 40978 states and 61109 transitions. [2021-11-19 14:51:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:51:10,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 88 [2021-11-19 14:51:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:10,376 INFO L225 Difference]: With dead ends: 40978 [2021-11-19 14:51:10,376 INFO L226 Difference]: Without dead ends: 24591 [2021-11-19 14:51:10,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:51:10,469 INFO L933 BasicCegarLoop]: 4501 mSDtfsCounter, 1 mSDsluCounter, 8996 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13497 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:10,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 13497 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:51:10,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24591 states. [2021-11-19 14:51:12,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24591 to 24589. [2021-11-19 14:51:12,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24589 states, 18714 states have (on average 1.4297851875601155) internal successors, (26757), 18850 states have internal predecessors, (26757), 4944 states have call successors, (4944), 931 states have call predecessors, (4944), 930 states have return successors, (4961), 4907 states have call predecessors, (4961), 4936 states have call successors, (4961) [2021-11-19 14:51:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24589 states to 24589 states and 36662 transitions. [2021-11-19 14:51:12,345 INFO L78 Accepts]: Start accepts. Automaton has 24589 states and 36662 transitions. Word has length 88 [2021-11-19 14:51:12,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:12,346 INFO L470 AbstractCegarLoop]: Abstraction has 24589 states and 36662 transitions. [2021-11-19 14:51:12,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:51:12,347 INFO L276 IsEmpty]: Start isEmpty. Operand 24589 states and 36662 transitions. [2021-11-19 14:51:12,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 14:51:12,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:12,356 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:51:12,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:12,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:12,572 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:12,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:12,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2041420433, now seen corresponding path program 1 times [2021-11-19 14:51:12,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:12,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721486967] [2021-11-19 14:51:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:12,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:12,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:12,579 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:12,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:51:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:14,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:51:14,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:14,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:51:14,994 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:14,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721486967] [2021-11-19 14:51:14,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721486967] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:14,994 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:14,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:51:14,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286781102] [2021-11-19 14:51:14,995 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:14,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:51:14,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:14,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:51:14,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:51:14,997 INFO L87 Difference]: Start difference. First operand 24589 states and 36662 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-19 14:51:16,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:16,992 INFO L93 Difference]: Finished difference Result 49100 states and 73235 transitions. [2021-11-19 14:51:16,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:51:16,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2021-11-19 14:51:16,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:17,312 INFO L225 Difference]: With dead ends: 49100 [2021-11-19 14:51:17,312 INFO L226 Difference]: Without dead ends: 24559 [2021-11-19 14:51:17,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:51:17,428 INFO L933 BasicCegarLoop]: 4501 mSDtfsCounter, 6 mSDsluCounter, 22464 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26965 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:17,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 26965 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:51:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24559 states. [2021-11-19 14:51:19,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24559 to 24559. [2021-11-19 14:51:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24559 states, 18696 states have (on average 1.4298780487804879) internal successors, (26733), 18828 states have internal predecessors, (26733), 4938 states have call successors, (4938), 925 states have call predecessors, (4938), 924 states have return successors, (4955), 4901 states have call predecessors, (4955), 4930 states have call successors, (4955) [2021-11-19 14:51:19,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24559 states to 24559 states and 36626 transitions. [2021-11-19 14:51:19,337 INFO L78 Accepts]: Start accepts. Automaton has 24559 states and 36626 transitions. Word has length 89 [2021-11-19 14:51:19,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:19,338 INFO L470 AbstractCegarLoop]: Abstraction has 24559 states and 36626 transitions. [2021-11-19 14:51:19,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-19 14:51:19,338 INFO L276 IsEmpty]: Start isEmpty. Operand 24559 states and 36626 transitions. [2021-11-19 14:51:19,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-19 14:51:19,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:19,344 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:51:19,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:19,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:19,553 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:19,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1415502185, now seen corresponding path program 1 times [2021-11-19 14:51:19,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:19,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072062622] [2021-11-19 14:51:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:19,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:19,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:19,557 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:19,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:51:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:20,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:51:20,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:21,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:21,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:51:22,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:22,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072062622] [2021-11-19 14:51:22,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072062622] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:22,204 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:22,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:51:22,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674779323] [2021-11-19 14:51:22,205 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:22,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:51:22,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:22,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:51:22,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:22,206 INFO L87 Difference]: Start difference. First operand 24559 states and 36626 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-19 14:51:25,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:25,275 INFO L93 Difference]: Finished difference Result 55006 states and 82873 transitions. [2021-11-19 14:51:25,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:51:25,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 88 [2021-11-19 14:51:25,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:25,481 INFO L225 Difference]: With dead ends: 55006 [2021-11-19 14:51:25,481 INFO L226 Difference]: Without dead ends: 30507 [2021-11-19 14:51:25,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:25,601 INFO L933 BasicCegarLoop]: 4685 mSDtfsCounter, 1859 mSDsluCounter, 8249 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 12934 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:25,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2160 Valid, 12934 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:51:25,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30507 states. [2021-11-19 14:51:27,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30507 to 28695. [2021-11-19 14:51:27,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28695 states, 22074 states have (on average 1.4439159191809368) internal successors, (31873), 22238 states have internal predecessors, (31873), 5696 states have call successors, (5696), 925 states have call predecessors, (5696), 924 states have return successors, (5727), 5649 states have call predecessors, (5727), 5688 states have call successors, (5727) [2021-11-19 14:51:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28695 states to 28695 states and 43296 transitions. [2021-11-19 14:51:27,842 INFO L78 Accepts]: Start accepts. Automaton has 28695 states and 43296 transitions. Word has length 88 [2021-11-19 14:51:27,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:27,842 INFO L470 AbstractCegarLoop]: Abstraction has 28695 states and 43296 transitions. [2021-11-19 14:51:27,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-19 14:51:27,842 INFO L276 IsEmpty]: Start isEmpty. Operand 28695 states and 43296 transitions. [2021-11-19 14:51:27,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-19 14:51:27,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:27,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:27,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-19 14:51:28,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:28,047 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:28,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:28,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2081266200, now seen corresponding path program 1 times [2021-11-19 14:51:28,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:28,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606335526] [2021-11-19 14:51:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:28,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:28,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:28,053 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:28,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:51:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:29,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:51:29,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:51:30,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:51:30,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:30,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606335526] [2021-11-19 14:51:30,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606335526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:30,400 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:30,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:51:30,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889114045] [2021-11-19 14:51:30,400 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:30,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:51:30,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:30,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:51:30,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:51:30,402 INFO L87 Difference]: Start difference. First operand 28695 states and 43296 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 14:51:32,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:32,379 INFO L93 Difference]: Finished difference Result 28703 states and 43302 transitions. [2021-11-19 14:51:32,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:51:32,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 90 [2021-11-19 14:51:32,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:32,521 INFO L225 Difference]: With dead ends: 28703 [2021-11-19 14:51:32,521 INFO L226 Difference]: Without dead ends: 28700 [2021-11-19 14:51:32,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:51:32,540 INFO L933 BasicCegarLoop]: 6181 mSDtfsCounter, 3404 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3404 SdHoareTripleChecker+Valid, 8998 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:32,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3404 Valid, 8998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:51:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28700 states. [2021-11-19 14:51:34,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28700 to 28694. [2021-11-19 14:51:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28694 states, 22074 states have (on average 1.4436441061882759) internal successors, (31867), 22237 states have internal predecessors, (31867), 5695 states have call successors, (5695), 925 states have call predecessors, (5695), 924 states have return successors, (5727), 5649 states have call predecessors, (5727), 5688 states have call successors, (5727) [2021-11-19 14:51:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28694 states to 28694 states and 43289 transitions. [2021-11-19 14:51:34,436 INFO L78 Accepts]: Start accepts. Automaton has 28694 states and 43289 transitions. Word has length 90 [2021-11-19 14:51:34,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:34,437 INFO L470 AbstractCegarLoop]: Abstraction has 28694 states and 43289 transitions. [2021-11-19 14:51:34,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 14:51:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 28694 states and 43289 transitions. [2021-11-19 14:51:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 14:51:34,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:34,445 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:51:34,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:34,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:34,662 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:34,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:34,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1485246726, now seen corresponding path program 1 times [2021-11-19 14:51:34,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:34,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499553393] [2021-11-19 14:51:34,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:34,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:34,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:34,665 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:34,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:51:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:35,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:51:35,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:51:36,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:51:36,583 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:36,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499553393] [2021-11-19 14:51:36,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499553393] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:36,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:36,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:51:36,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526248186] [2021-11-19 14:51:36,584 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:36,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:51:36,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:36,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:51:36,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:51:36,586 INFO L87 Difference]: Start difference. First operand 28694 states and 43289 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:51:38,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:38,608 INFO L93 Difference]: Finished difference Result 57330 states and 86512 transitions. [2021-11-19 14:51:38,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:51:38,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2021-11-19 14:51:38,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:38,761 INFO L225 Difference]: With dead ends: 57330 [2021-11-19 14:51:38,762 INFO L226 Difference]: Without dead ends: 28696 [2021-11-19 14:51:38,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:51:38,857 INFO L933 BasicCegarLoop]: 7945 mSDtfsCounter, 4400 mSDsluCounter, 4423 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4400 SdHoareTripleChecker+Valid, 12368 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:38,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4400 Valid, 12368 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:51:38,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28696 states. [2021-11-19 14:51:40,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28696 to 28588. [2021-11-19 14:51:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28588 states, 22020 states have (on average 1.4441871026339692) internal successors, (31801), 22182 states have internal predecessors, (31801), 5647 states have call successors, (5647), 916 states have call predecessors, (5647), 920 states have return successors, (5661), 5607 states have call predecessors, (5661), 5637 states have call successors, (5661) [2021-11-19 14:51:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28588 states to 28588 states and 43109 transitions. [2021-11-19 14:51:40,598 INFO L78 Accepts]: Start accepts. Automaton has 28588 states and 43109 transitions. Word has length 101 [2021-11-19 14:51:40,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:40,598 INFO L470 AbstractCegarLoop]: Abstraction has 28588 states and 43109 transitions. [2021-11-19 14:51:40,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:51:40,599 INFO L276 IsEmpty]: Start isEmpty. Operand 28588 states and 43109 transitions. [2021-11-19 14:51:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 14:51:40,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:40,607 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:51:40,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:40,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:40,820 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:40,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:40,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1894070951, now seen corresponding path program 1 times [2021-11-19 14:51:40,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:40,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328210925] [2021-11-19 14:51:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:40,823 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:40,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:40,824 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:40,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:51:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:42,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:51:42,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:51:42,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:51:43,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:43,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [328210925] [2021-11-19 14:51:43,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [328210925] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:43,002 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:43,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-19 14:51:43,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240049064] [2021-11-19 14:51:43,002 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:43,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:51:43,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:51:43,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:51:43,004 INFO L87 Difference]: Start difference. First operand 28588 states and 43109 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:51:46,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:46,908 INFO L93 Difference]: Finished difference Result 40373 states and 61467 transitions. [2021-11-19 14:51:46,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:51:46,909 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2021-11-19 14:51:46,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:47,094 INFO L225 Difference]: With dead ends: 40373 [2021-11-19 14:51:47,095 INFO L226 Difference]: Without dead ends: 35028 [2021-11-19 14:51:47,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:51:47,128 INFO L933 BasicCegarLoop]: 6623 mSDtfsCounter, 3748 mSDsluCounter, 30759 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3889 SdHoareTripleChecker+Valid, 37382 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 712 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:47,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3889 Valid, 37382 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [712 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:51:47,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35028 states. [2021-11-19 14:51:49,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35028 to 25540. [2021-11-19 14:51:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25540 states, 19583 states have (on average 1.434969105857121) internal successors, (28101), 19733 states have internal predecessors, (28101), 5099 states have call successors, (5099), 853 states have call predecessors, (5099), 857 states have return successors, (5115), 5068 states have call predecessors, (5115), 5091 states have call successors, (5115) [2021-11-19 14:51:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25540 states to 25540 states and 38315 transitions. [2021-11-19 14:51:49,167 INFO L78 Accepts]: Start accepts. Automaton has 25540 states and 38315 transitions. Word has length 101 [2021-11-19 14:51:49,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:49,168 INFO L470 AbstractCegarLoop]: Abstraction has 25540 states and 38315 transitions. [2021-11-19 14:51:49,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:51:49,168 INFO L276 IsEmpty]: Start isEmpty. Operand 25540 states and 38315 transitions. [2021-11-19 14:51:49,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-19 14:51:49,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:49,191 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:49,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:49,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:49,404 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:49,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:49,405 INFO L85 PathProgramCache]: Analyzing trace with hash 503134279, now seen corresponding path program 1 times [2021-11-19 14:51:49,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:49,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392125692] [2021-11-19 14:51:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:49,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:49,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:49,408 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:49,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3493fd38-faf2-433d-be4e-dd99bbda7fda/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:51:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:50,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:51:50,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:51:51,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:51:51,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:51,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392125692] [2021-11-19 14:51:51,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392125692] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:51,560 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:51,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 14:51:51,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573682078] [2021-11-19 14:51:51,561 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:51,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:51:51,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:51,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:51:51,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:51:51,562 INFO L87 Difference]: Start difference. First operand 25540 states and 38315 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22)