./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8 --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 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:23:01,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:23:01,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:23:01,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:23:01,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:23:01,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:23:01,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:23:01,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:23:01,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:23:01,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:23:01,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:23:01,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:23:01,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:23:01,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:23:01,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:23:01,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:23:01,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:23:01,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:23:01,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:23:01,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:23:01,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:23:01,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:23:01,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:23:01,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:23:01,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:23:01,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:23:01,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:23:01,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:23:01,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:23:01,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:23:01,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:23:01,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:23:01,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:23:01,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:23:01,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:23:01,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:23:01,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:23:01,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:23:01,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:23:01,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:23:01,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:23:01,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:23:01,421 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:23:01,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:23:01,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:23:01,423 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:23:01,423 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:23:01,423 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:23:01,424 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:23:01,424 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:23:01,424 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:23:01,425 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:23:01,425 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:23:01,425 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:23:01,426 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:23:01,426 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:23:01,427 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:23:01,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:23:01,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:23:01,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:23:01,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:23:01,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:23:01,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:23:01,430 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:23:01,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:23:01,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:23:01,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:23:01,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:23:01,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:23:01,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:01,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:23:01,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:23:01,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:23:01,433 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:23:01,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:23:01,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:23:01,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:23:01,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:23:01,434 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_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 [2021-11-07 01:23:01,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:23:01,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:23:01,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:23:01,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:23:01,799 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:23:01,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-11-07 01:23:01,893 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/data/472a4b06e/0844f891ae7c404ca447981910297603/FLAGb70949fd5 [2021-11-07 01:23:02,984 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:23:02,986 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-11-07 01:23:03,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/data/472a4b06e/0844f891ae7c404ca447981910297603/FLAGb70949fd5 [2021-11-07 01:23:03,292 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/data/472a4b06e/0844f891ae7c404ca447981910297603 [2021-11-07 01:23:03,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:23:03,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:23:03,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:03,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:23:03,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:23:03,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:03" (1/1) ... [2021-11-07 01:23:03,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79105828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:03, skipping insertion in model container [2021-11-07 01:23:03,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:03" (1/1) ... [2021-11-07 01:23:03,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:23:03,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:06,008 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-11-07 01:23:06,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:06,138 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) [2021-11-07 01:23:06,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b9100a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:06, skipping insertion in model container [2021-11-07 01:23:06,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:06,140 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:23:06,142 INFO L168 Benchmark]: Toolchain (without parser) took 2842.35 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 40.2 MB in the beginning and 57.9 MB in the end (delta: -17.6 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:23:06,143 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 58.8 MB in the beginning and 58.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:23:06,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2838.53 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 39.9 MB in the beginning and 57.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:23:06,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 58.8 MB in the beginning and 58.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2838.53 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 39.9 MB in the beginning and 57.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5853]: 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_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8 --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 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:23:08,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:23:08,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:23:08,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:23:08,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:23:08,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:23:08,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:23:08,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:23:08,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:23:08,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:23:08,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:23:08,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:23:08,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:23:08,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:23:08,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:23:08,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:23:08,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:23:08,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:23:08,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:23:08,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:23:08,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:23:08,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:23:08,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:23:08,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:23:08,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:23:08,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:23:08,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:23:08,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:23:08,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:23:08,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:23:08,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:23:08,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:23:08,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:23:08,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:23:08,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:23:08,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:23:08,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:23:08,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:23:08,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:23:08,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:23:08,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:23:08,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:23:08,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:23:08,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:23:08,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:23:08,960 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:23:08,961 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:23:08,961 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:23:08,961 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:23:08,962 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:23:08,962 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:23:08,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:23:08,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:23:08,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:23:08,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:23:08,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:23:08,966 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:23:08,966 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:23:08,967 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:23:08,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:23:08,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:23:08,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:23:08,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:23:08,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:23:08,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:23:08,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:08,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:23:08,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:23:08,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:23:08,970 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:23:08,970 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:08,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:23:08,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:23:08,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:23:08,971 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_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 [2021-11-07 01:23:09,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:23:09,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:23:09,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:23:09,527 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:23:09,528 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:23:09,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-11-07 01:23:09,618 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/data/a72ff9cb3/cae16f958eaf4c6e9fba0c9eaec8c1f6/FLAGceb5299ee [2021-11-07 01:23:10,812 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:23:10,814 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-11-07 01:23:10,894 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/data/a72ff9cb3/cae16f958eaf4c6e9fba0c9eaec8c1f6/FLAGceb5299ee [2021-11-07 01:23:11,118 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/data/a72ff9cb3/cae16f958eaf4c6e9fba0c9eaec8c1f6 [2021-11-07 01:23:11,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:23:11,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:23:11,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:11,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:23:11,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:23:11,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:11" (1/1) ... [2021-11-07 01:23:11,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6c0264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:11, skipping insertion in model container [2021-11-07 01:23:11,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:11" (1/1) ... [2021-11-07 01:23:11,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:23:11,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:13,997 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-11-07 01:23:14,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:14,112 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:23:14,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:23:14,787 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-11-07 01:23:14,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:14,868 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:23:15,648 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-11-07 01:23:15,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:23:15,857 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:23:15,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:15 WrapperNode [2021-11-07 01:23:15,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:23:15,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:23:15,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:23:15,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:23:15,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:15" (1/1) ... [2021-11-07 01:23:15,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:15" (1/1) ... [2021-11-07 01:23:23,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:23:23,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:23:23,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:23:23,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:23:23,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:15" (1/1) ... [2021-11-07 01:23:23,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:15" (1/1) ... [2021-11-07 01:23:24,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:15" (1/1) ... [2021-11-07 01:23:24,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:15" (1/1) ... [2021-11-07 01:23:27,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:15" (1/1) ... [2021-11-07 01:23:27,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:15" (1/1) ... [2021-11-07 01:23:27,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:15" (1/1) ... [2021-11-07 01:23:28,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:23:28,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:23:28,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:23:28,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:23:28,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:15" (1/1) ... [2021-11-07 01:23:28,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:23:28,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:23:28,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:23:28,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:23:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_running_reset [2021-11-07 01:23:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_running_reset [2021-11-07 01:23:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:23:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:23:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:23:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:23:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:23:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:23:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_reset [2021-11-07 01:23:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_reset [2021-11-07 01:23:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:23:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_driver_timeout [2021-11-07 01:23:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_driver_timeout [2021-11-07 01:23:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:23:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:23:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:23:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:23:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:23:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:23:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:23:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:23:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:23:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:23:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:23:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:23:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:23:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:23:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_set_status [2021-11-07 01:23:28,668 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_set_status [2021-11-07 01:23:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:23:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:23:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:23:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:23:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:23:28,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:23:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:23:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:23:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 01:23:28,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 01:23:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:23:28,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:34:14,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:34:14,835 INFO L299 CfgBuilder]: Removed 32562 assume(true) statements. [2021-11-07 01:34:14,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:14 BoogieIcfgContainer [2021-11-07 01:34:14,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:34:14,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:34:14,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:34:14,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:34:14,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:23:11" (1/3) ... [2021-11-07 01:34:14,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6271290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:14, skipping insertion in model container [2021-11-07 01:34:14,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:15" (2/3) ... [2021-11-07 01:34:14,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6271290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:14, skipping insertion in model container [2021-11-07 01:34:14,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:14" (3/3) ... [2021-11-07 01:34:14,874 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-11-07 01:34:14,881 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:34:14,882 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2021-11-07 01:34:15,077 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:34:15,084 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 [2021-11-07 01:34:15,085 INFO L340 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2021-11-07 01:34:15,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 24916 states, 24843 states have (on average 1.2467093346214226) internal successors, (30972), 24877 states have internal predecessors, (30972), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-07 01:34:15,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 01:34:15,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:15,552 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:15,552 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [lmc_running_resetErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 01:34:15,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:15,558 INFO L85 PathProgramCache]: Analyzing trace with hash 150014610, now seen corresponding path program 1 times [2021-11-07 01:34:15,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:15,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432872224] [2021-11-07 01:34:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:15,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:15,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:15,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:15,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:34:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:18,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:34:18,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:19,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:19,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:19,488 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:19,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432872224] [2021-11-07 01:34:19,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432872224] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:19,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:19,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:34:19,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048779626] [2021-11-07 01:34:19,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:34:19,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:19,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:34:19,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:34:19,580 INFO L87 Difference]: Start difference. First operand has 24916 states, 24843 states have (on average 1.2467093346214226) internal successors, (30972), 24877 states have internal predecessors, (30972), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:21,179 INFO L93 Difference]: Finished difference Result 49828 states and 62133 transitions. [2021-11-07 01:34:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:34:21,181 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-07 01:34:21,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:21,466 INFO L225 Difference]: With dead ends: 49828 [2021-11-07 01:34:21,466 INFO L226 Difference]: Without dead ends: 24901 [2021-11-07 01:34:21,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:34:21,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24901 states. [2021-11-07 01:34:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24901 to 24901. [2021-11-07 01:34:23,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24901 states, 24829 states have (on average 1.244230536872206) internal successors, (30893), 24862 states have internal predecessors, (30893), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-07 01:34:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24901 states to 24901 states and 30977 transitions. [2021-11-07 01:34:23,352 INFO L78 Accepts]: Start accepts. Automaton has 24901 states and 30977 transitions. Word has length 35 [2021-11-07 01:34:23,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:23,353 INFO L470 AbstractCegarLoop]: Abstraction has 24901 states and 30977 transitions. [2021-11-07 01:34:23,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:23,354 INFO L276 IsEmpty]: Start isEmpty. Operand 24901 states and 30977 transitions. [2021-11-07 01:34:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 01:34:23,358 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:23,359 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:23,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:34:23,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:23,585 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [lmc_running_resetErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 01:34:23,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:23,586 INFO L85 PathProgramCache]: Analyzing trace with hash 290760718, now seen corresponding path program 1 times [2021-11-07 01:34:23,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:23,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29019096] [2021-11-07 01:34:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:23,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:23,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:23,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:23,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:34:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:26,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:26,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:27,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:27,375 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:27,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29019096] [2021-11-07 01:34:27,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29019096] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:27,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:27,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:34:27,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747378091] [2021-11-07 01:34:27,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:34:27,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:27,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:34:27,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:34:27,381 INFO L87 Difference]: Start difference. First operand 24901 states and 30977 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:29,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:29,783 INFO L93 Difference]: Finished difference Result 49796 states and 61957 transitions. [2021-11-07 01:34:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:34:29,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-07 01:34:29,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:29,936 INFO L225 Difference]: With dead ends: 49796 [2021-11-07 01:34:29,936 INFO L226 Difference]: Without dead ends: 24911 [2021-11-07 01:34:30,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:34:30,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24911 states. [2021-11-07 01:34:30,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24911 to 24911. [2021-11-07 01:34:30,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24911 states, 24839 states have (on average 1.2441322114416844) internal successors, (30903), 24872 states have internal predecessors, (30903), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-07 01:34:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24911 states to 24911 states and 30987 transitions. [2021-11-07 01:34:31,371 INFO L78 Accepts]: Start accepts. Automaton has 24911 states and 30987 transitions. Word has length 35 [2021-11-07 01:34:31,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:31,372 INFO L470 AbstractCegarLoop]: Abstraction has 24911 states and 30987 transitions. [2021-11-07 01:34:31,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:31,372 INFO L276 IsEmpty]: Start isEmpty. Operand 24911 states and 30987 transitions. [2021-11-07 01:34:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 01:34:31,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:31,375 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:31,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:31,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:31,601 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [lmc_running_resetErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 01:34:31,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:31,602 INFO L85 PathProgramCache]: Analyzing trace with hash -463332210, now seen corresponding path program 1 times [2021-11-07 01:34:31,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:31,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654326223] [2021-11-07 01:34:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:31,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:31,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:31,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:31,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:34:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:34,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:34:34,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:34:35,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:34:36,218 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:36,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654326223] [2021-11-07 01:34:36,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654326223] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:36,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [631724792] [2021-11-07 01:34:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:36,219 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:36,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:36,222 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:36,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:34:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:38,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:34:38,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:34:38,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:34:38,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [631724792] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:38,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:34:38,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:34:38,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932147891] [2021-11-07 01:34:38,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:34:38,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:38,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:34:38,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:38,928 INFO L87 Difference]: Start difference. First operand 24911 states and 30987 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:41,500 INFO L93 Difference]: Finished difference Result 74317 states and 92445 transitions. [2021-11-07 01:34:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:34:41,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-07 01:34:41,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:41,769 INFO L225 Difference]: With dead ends: 74317 [2021-11-07 01:34:41,769 INFO L226 Difference]: Without dead ends: 49431 [2021-11-07 01:34:42,113 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49431 states. [2021-11-07 01:34:43,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49431 to 49384. [2021-11-07 01:34:44,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49384 states, 49265 states have (on average 1.244169288541561) internal successors, (61294), 49308 states have internal predecessors, (61294), 83 states have call successors, (83), 12 states have call predecessors, (83), 12 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2021-11-07 01:34:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49384 states to 49384 states and 61460 transitions. [2021-11-07 01:34:44,461 INFO L78 Accepts]: Start accepts. Automaton has 49384 states and 61460 transitions. Word has length 39 [2021-11-07 01:34:44,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:44,462 INFO L470 AbstractCegarLoop]: Abstraction has 49384 states and 61460 transitions. [2021-11-07 01:34:44,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:44,463 INFO L276 IsEmpty]: Start isEmpty. Operand 49384 states and 61460 transitions. [2021-11-07 01:34:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:34:44,472 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:44,473 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:44,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:44,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:44,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:44,889 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [lmc_running_resetErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 01:34:44,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:44,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1966050069, now seen corresponding path program 1 times [2021-11-07 01:34:44,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:44,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222113345] [2021-11-07 01:34:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:44,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:44,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:44,898 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:44,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:34:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:48,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:34:48,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:34:48,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:34:49,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:49,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222113345] [2021-11-07 01:34:49,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222113345] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:49,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1401360435] [2021-11-07 01:34:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:49,798 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:49,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:49,803 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:49,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:34:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:52,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:34:52,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:34:52,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:53,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:34:53,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1401360435] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:53,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:34:53,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:34:53,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583855729] [2021-11-07 01:34:53,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:34:53,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:53,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:34:53,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:53,602 INFO L87 Difference]: Start difference. First operand 49384 states and 61460 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:56,263 INFO L93 Difference]: Finished difference Result 76466 states and 95469 transitions. [2021-11-07 01:34:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:34:56,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 01:34:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:56,580 INFO L225 Difference]: With dead ends: 76466 [2021-11-07 01:34:56,580 INFO L226 Difference]: Without dead ends: 76418 [2021-11-07 01:34:56,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76418 states. [2021-11-07 01:34:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76418 to 74424. [2021-11-07 01:34:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74424 states, 74258 states have (on average 1.2474346198389399) internal successors, (92632), 74312 states have internal predecessors, (92632), 125 states have call successors, (125), 22 states have call predecessors, (125), 22 states have return successors, (165), 119 states have call predecessors, (165), 125 states have call successors, (165) [2021-11-07 01:34:59,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74424 states to 74424 states and 92922 transitions. [2021-11-07 01:34:59,965 INFO L78 Accepts]: Start accepts. Automaton has 74424 states and 92922 transitions. Word has length 57 [2021-11-07 01:34:59,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:59,969 INFO L470 AbstractCegarLoop]: Abstraction has 74424 states and 92922 transitions. [2021-11-07 01:34:59,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:59,969 INFO L276 IsEmpty]: Start isEmpty. Operand 74424 states and 92922 transitions. [2021-11-07 01:35:00,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 01:35:00,009 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:00,009 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:00,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:00,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:00,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:00,433 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [lmc_running_resetErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 01:35:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:00,434 INFO L85 PathProgramCache]: Analyzing trace with hash -395405110, now seen corresponding path program 1 times [2021-11-07 01:35:00,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:00,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798468370] [2021-11-07 01:35:00,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:00,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:00,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:00,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:00,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:35:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:03,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:35:03,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:35:04,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:05,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:35:05,575 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:05,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798468370] [2021-11-07 01:35:05,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798468370] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:05,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1055689313] [2021-11-07 01:35:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:05,575 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:05,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:05,576 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:05,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:35:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:07,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:35:07,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:35:08,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:35:09,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1055689313] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:09,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:35:09,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:35:09,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701462690] [2021-11-07 01:35:09,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:35:09,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:09,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:35:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:35:09,163 INFO L87 Difference]: Start difference. First operand 74424 states and 92922 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:18,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:18,251 INFO L93 Difference]: Finished difference Result 296140 states and 368811 transitions. [2021-11-07 01:35:18,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:35:18,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 01:35:18,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:19,504 INFO L225 Difference]: With dead ends: 296140 [2021-11-07 01:35:19,504 INFO L226 Difference]: Without dead ends: 221741 [2021-11-07 01:35:19,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:35:20,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221741 states. [2021-11-07 01:35:26,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221741 to 147755. [2021-11-07 01:35:26,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147755 states, 147450 states have (on average 1.2467277043065446) internal successors, (183830), 147532 states have internal predecessors, (183830), 242 states have call successors, (242), 44 states have call predecessors, (242), 44 states have return successors, (318), 226 states have call predecessors, (318), 242 states have call successors, (318) [2021-11-07 01:35:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147755 states to 147755 states and 184390 transitions. [2021-11-07 01:35:27,412 INFO L78 Accepts]: Start accepts. Automaton has 147755 states and 184390 transitions. Word has length 69 [2021-11-07 01:35:27,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:27,413 INFO L470 AbstractCegarLoop]: Abstraction has 147755 states and 184390 transitions. [2021-11-07 01:35:27,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 147755 states and 184390 transitions. [2021-11-07 01:35:27,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:35:27,501 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:27,501 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:27,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:27,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:27,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:27,925 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [lmc_running_resetErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 01:35:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1892861175, now seen corresponding path program 1 times [2021-11-07 01:35:27,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:27,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363989000] [2021-11-07 01:35:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:27,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:27,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:27,929 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:27,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:35:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:31,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:35:31,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:35:31,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:35:32,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:32,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363989000] [2021-11-07 01:35:32,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363989000] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:32,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1993695139] [2021-11-07 01:35:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:32,508 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:32,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:32,512 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:32,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75d4aa2-f64c-4ea4-bc3d-4642a0e6117b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:35:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:34,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:35:34,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:35:35,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:35:36,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1993695139] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:36,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:35:36,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:35:36,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056013924] [2021-11-07 01:35:36,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:35:36,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:36,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:35:36,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:35:36,582 INFO L87 Difference]: Start difference. First operand 147755 states and 184390 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)