./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:21:37,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:21:37,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:21:37,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:21:37,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:21:37,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:21:37,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:21:37,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:21:37,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:21:37,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:21:37,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:21:37,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:21:37,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:21:37,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:21:37,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:21:37,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:21:37,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:21:37,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:21:37,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:21:37,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:21:37,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:21:37,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:21:37,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:21:37,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:21:37,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:21:37,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:21:37,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:21:37,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:21:37,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:21:37,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:21:37,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:21:37,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:21:37,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:21:37,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:21:37,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:21:37,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:21:37,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:21:37,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:21:37,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:21:37,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:21:37,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:21:37,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 05:21:37,408 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:21:37,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:21:37,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:21:37,410 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:21:37,411 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:21:37,411 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:21:37,411 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:21:37,411 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:21:37,418 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:21:37,418 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:21:37,419 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:21:37,419 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:21:37,420 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:21:37,420 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:21:37,420 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:21:37,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:21:37,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:21:37,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:21:37,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:21:37,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:21:37,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:21:37,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:21:37,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:21:37,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:21:37,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:21:37,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:21:37,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:21:37,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:21:37,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:21:37,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:21:37,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:21:37,425 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:21:37,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:21:37,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:21:37,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:21:37,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:21:37,426 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_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 [2021-11-03 05:21:37,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:21:37,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:21:37,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:21:37,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:21:37,772 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:21:37,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-03 05:21:37,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/data/58b98ab2b/fb85018d477e4948afbd40175dbd5064/FLAGf13062466 [2021-11-03 05:21:38,702 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:21:38,703 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-03 05:21:38,752 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/data/58b98ab2b/fb85018d477e4948afbd40175dbd5064/FLAGf13062466 [2021-11-03 05:21:39,218 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/data/58b98ab2b/fb85018d477e4948afbd40175dbd5064 [2021-11-03 05:21:39,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:21:39,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:21:39,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:21:39,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:21:39,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:21:39,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:21:39" (1/1) ... [2021-11-03 05:21:39,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc494d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:39, skipping insertion in model container [2021-11-03 05:21:39,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:21:39" (1/1) ... [2021-11-03 05:21:39,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:21:39,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:21:40,472 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_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-03 05:21:40,663 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:21:40,665 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:21:40,768 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:21:40,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:21:40,904 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 05:21:40,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ea1703f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:40, skipping insertion in model container [2021-11-03 05:21:40,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:21:40,905 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:21:40,907 INFO L168 Benchmark]: Toolchain (without parser) took 1681.61 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 70.1 MB in the beginning and 49.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. [2021-11-03 05:21:40,908 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 64.1 MB in the beginning and 64.1 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:21:40,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1677.23 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 69.8 MB in the beginning and 49.0 MB in the end (delta: 20.7 MB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. [2021-11-03 05:21:40,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 64.1 MB in the beginning and 64.1 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1677.23 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 69.8 MB in the beginning and 49.0 MB in the end (delta: 20.7 MB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5870]: 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_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:21:43,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:21:43,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:21:43,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:21:43,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:21:43,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:21:43,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:21:43,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:21:43,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:21:43,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:21:43,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:21:43,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:21:43,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:21:43,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:21:43,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:21:43,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:21:43,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:21:43,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:21:43,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:21:43,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:21:43,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:21:43,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:21:43,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:21:43,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:21:43,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:21:43,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:21:43,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:21:43,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:21:43,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:21:43,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:21:43,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:21:43,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:21:43,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:21:43,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:21:43,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:21:43,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:21:43,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:21:43,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:21:43,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:21:43,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:21:43,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:21:43,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 05:21:43,689 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:21:43,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:21:43,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:21:43,691 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:21:43,691 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:21:43,692 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:21:43,692 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:21:43,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:21:43,692 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:21:43,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:21:43,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:21:43,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:21:43,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:21:43,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:21:43,696 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:21:43,697 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:21:43,697 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:21:43,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:21:43,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:21:43,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:21:43,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:21:43,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:21:43,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:21:43,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:21:43,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:21:43,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:21:43,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:21:43,700 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:21:43,700 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:21:43,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:21:43,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:21:43,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:21:43,701 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_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 [2021-11-03 05:21:44,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:21:44,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:21:44,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:21:44,131 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:21:44,132 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:21:44,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-03 05:21:44,209 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/data/c136be7ed/80d5622c161241e0b249a6feb2284bd5/FLAG42a9d10da [2021-11-03 05:21:45,239 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:21:45,241 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-03 05:21:45,287 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/data/c136be7ed/80d5622c161241e0b249a6feb2284bd5/FLAG42a9d10da [2021-11-03 05:21:45,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/data/c136be7ed/80d5622c161241e0b249a6feb2284bd5 [2021-11-03 05:21:45,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:21:45,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:21:45,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:21:45,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:21:45,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:21:45,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:21:45" (1/1) ... [2021-11-03 05:21:45,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459f8853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:45, skipping insertion in model container [2021-11-03 05:21:45,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:21:45" (1/1) ... [2021-11-03 05:21:45,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:21:45,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:21:47,044 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_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-03 05:21:47,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:21:47,556 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:21:47,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:21:47,830 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_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-03 05:21:47,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:21:48,018 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:21:48,231 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_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-03 05:21:48,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:21:48,538 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:21:48,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:48 WrapperNode [2021-11-03 05:21:48,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:21:48,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:21:48,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:21:48,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:21:48,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:48" (1/1) ... [2021-11-03 05:21:48,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:48" (1/1) ... [2021-11-03 05:21:48,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:21:48,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:21:48,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:21:48,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:21:48,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:48" (1/1) ... [2021-11-03 05:21:48,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:48" (1/1) ... [2021-11-03 05:21:48,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:48" (1/1) ... [2021-11-03 05:21:48,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:48" (1/1) ... [2021-11-03 05:21:49,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:48" (1/1) ... [2021-11-03 05:21:49,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:48" (1/1) ... [2021-11-03 05:21:49,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:48" (1/1) ... [2021-11-03 05:21:49,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:21:49,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:21:49,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:21:49,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:21:49,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:48" (1/1) ... [2021-11-03 05:21:49,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:21:49,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:21:49,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:21:49,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:21:49,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:21:49,216 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-03 05:21:49,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 05:21:49,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:21:49,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 05:21:49,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 05:21:49,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 05:21:49,218 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-03 05:21:49,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 05:21:49,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 05:21:49,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 05:21:49,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 05:21:49,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:21:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:21:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:21:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-03 05:21:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 05:21:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 05:21:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 05:21:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:21:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 05:21:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 05:21:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 05:21:49,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:21:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:21:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 05:21:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 05:21:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:21:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 05:21:49,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 05:21:49,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:21:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:22:12,318 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:22:12,319 INFO L299 CfgBuilder]: Removed 777 assume(true) statements. [2021-11-03 05:22:12,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:22:12 BoogieIcfgContainer [2021-11-03 05:22:12,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:22:12,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:22:12,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:22:12,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:22:12,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:21:45" (1/3) ... [2021-11-03 05:22:12,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2d9447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:22:12, skipping insertion in model container [2021-11-03 05:22:12,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:21:48" (2/3) ... [2021-11-03 05:22:12,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2d9447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:22:12, skipping insertion in model container [2021-11-03 05:22:12,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:22:12" (3/3) ... [2021-11-03 05:22:12,333 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-03 05:22:12,340 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:22:12,340 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:22:12,396 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:22:12,402 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:22:12,402 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:22:12,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 1061 states, 1059 states have (on average 1.6052880075542966) internal successors, (1700), 1060 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:22:12,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:12,458 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:12,459 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:22:12,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:12,465 INFO L85 PathProgramCache]: Analyzing trace with hash 536616939, now seen corresponding path program 1 times [2021-11-03 05:22:12,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:22:12,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824779442] [2021-11-03 05:22:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:12,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:22:12,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:22:12,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:22:12,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:22:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:13,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:22:13,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:22:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:13,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:22:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:13,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:22:13,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824779442] [2021-11-03 05:22:13,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824779442] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:13,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:13,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:22:13,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403538179] [2021-11-03 05:22:13,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:22:13,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:22:13,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:22:13,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:22:13,958 INFO L87 Difference]: Start difference. First operand has 1061 states, 1059 states have (on average 1.6052880075542966) internal successors, (1700), 1060 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:14,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:14,066 INFO L93 Difference]: Finished difference Result 2118 states and 3395 transitions. [2021-11-03 05:22:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:22:14,068 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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 51 [2021-11-03 05:22:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:14,100 INFO L225 Difference]: With dead ends: 2118 [2021-11-03 05:22:14,100 INFO L226 Difference]: Without dead ends: 1051 [2021-11-03 05:22:14,109 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:22:14,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-11-03 05:22:14,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1051. [2021-11-03 05:22:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.5085714285714287) internal successors, (1584), 1050 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1584 transitions. [2021-11-03 05:22:14,218 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1584 transitions. Word has length 51 [2021-11-03 05:22:14,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:14,218 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 1584 transitions. [2021-11-03 05:22:14,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:14,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1584 transitions. [2021-11-03 05:22:14,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:22:14,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:14,225 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:14,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:22:14,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:22:14,448 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:22:14,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:14,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2016685283, now seen corresponding path program 1 times [2021-11-03 05:22:14,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:22:14,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344456417] [2021-11-03 05:22:14,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:14,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:22:14,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:22:14,454 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:22:14,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:22:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:15,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:22:15,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:22:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:15,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:22:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:15,715 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:22:15,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344456417] [2021-11-03 05:22:15,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344456417] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:15,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:15,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:22:15,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556626739] [2021-11-03 05:22:15,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:22:15,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:22:15,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:22:15,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:22:15,721 INFO L87 Difference]: Start difference. First operand 1051 states and 1584 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:18,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:18,120 INFO L93 Difference]: Finished difference Result 3914 states and 5929 transitions. [2021-11-03 05:22:18,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:22:18,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 51 [2021-11-03 05:22:18,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:18,144 INFO L225 Difference]: With dead ends: 3914 [2021-11-03 05:22:18,145 INFO L226 Difference]: Without dead ends: 2898 [2021-11-03 05:22:18,147 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:22:18,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2021-11-03 05:22:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 2898. [2021-11-03 05:22:18,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2898 states, 2897 states have (on average 1.5105281325509148) internal successors, (4376), 2897 states have internal predecessors, (4376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 4376 transitions. [2021-11-03 05:22:18,292 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 4376 transitions. Word has length 51 [2021-11-03 05:22:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:18,293 INFO L470 AbstractCegarLoop]: Abstraction has 2898 states and 4376 transitions. [2021-11-03 05:22:18,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:18,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 4376 transitions. [2021-11-03 05:22:18,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 05:22:18,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:18,299 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:18,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 05:22:18,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:22:18,524 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:22:18,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:18,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2137898722, now seen corresponding path program 1 times [2021-11-03 05:22:18,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:22:18,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353789332] [2021-11-03 05:22:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:18,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:22:18,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:22:18,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:22:18,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:22:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:19,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:22:19,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:22:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:19,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:22:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:19,726 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:22:19,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353789332] [2021-11-03 05:22:19,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353789332] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:19,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:19,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:22:19,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103261464] [2021-11-03 05:22:19,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:22:19,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:22:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:22:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:22:19,736 INFO L87 Difference]: Start difference. First operand 2898 states and 4376 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2021-11-03 05:22:20,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:20,094 INFO L93 Difference]: Finished difference Result 5760 states and 8715 transitions. [2021-11-03 05:22:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:22:20,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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 52 [2021-11-03 05:22:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:20,118 INFO L225 Difference]: With dead ends: 5760 [2021-11-03 05:22:20,119 INFO L226 Difference]: Without dead ends: 2897 [2021-11-03 05:22:20,124 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:22:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2021-11-03 05:22:20,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2897. [2021-11-03 05:22:20,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2896 states have (on average 1.5096685082872927) internal successors, (4372), 2896 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:20,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 4372 transitions. [2021-11-03 05:22:20,295 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 4372 transitions. Word has length 52 [2021-11-03 05:22:20,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:20,296 INFO L470 AbstractCegarLoop]: Abstraction has 2897 states and 4372 transitions. [2021-11-03 05:22:20,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2021-11-03 05:22:20,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 4372 transitions. [2021-11-03 05:22:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 05:22:20,301 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:20,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:20,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:22:20,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:22:20,528 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:22:20,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:20,529 INFO L85 PathProgramCache]: Analyzing trace with hash 36654566, now seen corresponding path program 1 times [2021-11-03 05:22:20,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:22:20,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569050798] [2021-11-03 05:22:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:20,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:22:20,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:22:20,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:22:20,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:22:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:21,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:22:21,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:22:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:22:21,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:22:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:22:22,218 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:22:22,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569050798] [2021-11-03 05:22:22,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569050798] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:22,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:22,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-03 05:22:22,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964637661] [2021-11-03 05:22:22,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:22:22,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:22:22,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:22:22,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:22:22,221 INFO L87 Difference]: Start difference. First operand 2897 states and 4372 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:23,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:23,775 INFO L93 Difference]: Finished difference Result 8619 states and 13045 transitions. [2021-11-03 05:22:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:22:23,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 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 77 [2021-11-03 05:22:23,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:23,815 INFO L225 Difference]: With dead ends: 8619 [2021-11-03 05:22:23,815 INFO L226 Difference]: Without dead ends: 5684 [2021-11-03 05:22:23,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:22:23,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5684 states. [2021-11-03 05:22:24,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5684 to 5516. [2021-11-03 05:22:24,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5516 states, 5515 states have (on average 1.513145965548504) internal successors, (8345), 5515 states have internal predecessors, (8345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:24,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 8345 transitions. [2021-11-03 05:22:24,148 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 8345 transitions. Word has length 77 [2021-11-03 05:22:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:24,150 INFO L470 AbstractCegarLoop]: Abstraction has 5516 states and 8345 transitions. [2021-11-03 05:22:24,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 8345 transitions. [2021-11-03 05:22:24,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 05:22:24,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:24,166 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:24,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:22:24,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:22:24,386 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:22:24,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:24,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2124171513, now seen corresponding path program 1 times [2021-11-03 05:22:24,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:22:24,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900745351] [2021-11-03 05:22:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:24,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:22:24,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:22:24,394 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:22:24,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:22:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:25,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:22:25,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:22:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:22:25,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:22:26,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:22:26,091 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:22:26,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900745351] [2021-11-03 05:22:26,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900745351] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:26,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:26,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:22:26,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894547062] [2021-11-03 05:22:26,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:22:26,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:22:26,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:22:26,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:22:26,094 INFO L87 Difference]: Start difference. First operand 5516 states and 8345 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:26,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:26,702 INFO L93 Difference]: Finished difference Result 12798 states and 19740 transitions. [2021-11-03 05:22:26,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:22:26,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 96 [2021-11-03 05:22:26,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:26,754 INFO L225 Difference]: With dead ends: 12798 [2021-11-03 05:22:26,754 INFO L226 Difference]: Without dead ends: 7317 [2021-11-03 05:22:26,765 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:22:26,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7317 states. [2021-11-03 05:22:27,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7317 to 7224. [2021-11-03 05:22:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7224 states, 7223 states have (on average 1.5608472933684066) internal successors, (11274), 7223 states have internal predecessors, (11274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7224 states to 7224 states and 11274 transitions. [2021-11-03 05:22:27,237 INFO L78 Accepts]: Start accepts. Automaton has 7224 states and 11274 transitions. Word has length 96 [2021-11-03 05:22:27,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:27,237 INFO L470 AbstractCegarLoop]: Abstraction has 7224 states and 11274 transitions. [2021-11-03 05:22:27,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:27,238 INFO L276 IsEmpty]: Start isEmpty. Operand 7224 states and 11274 transitions. [2021-11-03 05:22:27,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 05:22:27,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:27,250 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:27,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:22:27,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:22:27,476 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:22:27,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:27,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1237412217, now seen corresponding path program 2 times [2021-11-03 05:22:27,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:22:27,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020273195] [2021-11-03 05:22:27,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:22:27,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:22:27,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:22:27,481 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:22:27,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:22:33,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:22:33,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:22:33,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-03 05:22:33,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:22:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:22:34,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:22:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:22:35,010 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:22:35,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020273195] [2021-11-03 05:22:35,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020273195] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:35,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:35,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-03 05:22:35,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724412061] [2021-11-03 05:22:35,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 05:22:35,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:22:35,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 05:22:35,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:22:35,014 INFO L87 Difference]: Start difference. First operand 7224 states and 11274 transitions. Second operand has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:43,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:43,284 INFO L93 Difference]: Finished difference Result 24061 states and 37776 transitions. [2021-11-03 05:22:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 05:22:43,285 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 states have internal predecessors, (108), 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 96 [2021-11-03 05:22:43,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:43,373 INFO L225 Difference]: With dead ends: 24061 [2021-11-03 05:22:43,373 INFO L226 Difference]: Without dead ends: 18038 [2021-11-03 05:22:43,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2021-11-03 05:22:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18038 states. [2021-11-03 05:22:44,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18038 to 7224. [2021-11-03 05:22:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7224 states, 7223 states have (on average 1.5547556417001247) internal successors, (11230), 7223 states have internal predecessors, (11230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:44,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7224 states to 7224 states and 11230 transitions. [2021-11-03 05:22:44,439 INFO L78 Accepts]: Start accepts. Automaton has 7224 states and 11230 transitions. Word has length 96 [2021-11-03 05:22:44,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:44,440 INFO L470 AbstractCegarLoop]: Abstraction has 7224 states and 11230 transitions. [2021-11-03 05:22:44,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.75) internal successors, (108), 16 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 7224 states and 11230 transitions. [2021-11-03 05:22:44,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 05:22:44,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:44,453 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:44,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:22:44,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:22:44,679 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:22:44,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:44,680 INFO L85 PathProgramCache]: Analyzing trace with hash 107232550, now seen corresponding path program 1 times [2021-11-03 05:22:44,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:22:44,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339400698] [2021-11-03 05:22:44,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:44,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:22:44,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:22:44,683 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:22:44,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:22:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:45,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:22:45,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:22:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:45,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:22:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:46,273 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:22:46,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339400698] [2021-11-03 05:22:46,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339400698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:46,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:46,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:22:46,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751323899] [2021-11-03 05:22:46,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:22:46,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:22:46,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:22:46,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:22:46,276 INFO L87 Difference]: Start difference. First operand 7224 states and 11230 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:49,834 INFO L93 Difference]: Finished difference Result 18265 states and 28702 transitions. [2021-11-03 05:22:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:22:49,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 97 [2021-11-03 05:22:49,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:49,870 INFO L225 Difference]: With dead ends: 18265 [2021-11-03 05:22:49,870 INFO L226 Difference]: Without dead ends: 12242 [2021-11-03 05:22:49,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:22:49,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12242 states. [2021-11-03 05:22:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12242 to 12056. [2021-11-03 05:22:51,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12056 states, 12055 states have (on average 1.5767731231854003) internal successors, (19008), 12055 states have internal predecessors, (19008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12056 states to 12056 states and 19008 transitions. [2021-11-03 05:22:51,098 INFO L78 Accepts]: Start accepts. Automaton has 12056 states and 19008 transitions. Word has length 97 [2021-11-03 05:22:51,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:51,098 INFO L470 AbstractCegarLoop]: Abstraction has 12056 states and 19008 transitions. [2021-11-03 05:22:51,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:51,099 INFO L276 IsEmpty]: Start isEmpty. Operand 12056 states and 19008 transitions. [2021-11-03 05:22:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 05:22:51,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:51,112 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:51,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:22:51,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:22:51,336 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:22:51,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:51,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1430192971, now seen corresponding path program 1 times [2021-11-03 05:22:51,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:22:51,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491914489] [2021-11-03 05:22:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:51,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:22:51,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:22:51,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:22:51,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:22:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:52,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:22:52,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:22:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:22:52,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:22:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:22:53,005 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:22:53,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491914489] [2021-11-03 05:22:53,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491914489] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:53,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:53,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:22:53,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496331226] [2021-11-03 05:22:53,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:22:53,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:22:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:22:53,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:22:53,008 INFO L87 Difference]: Start difference. First operand 12056 states and 19008 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:54,297 INFO L93 Difference]: Finished difference Result 32096 states and 50855 transitions. [2021-11-03 05:22:54,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:22:54,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 98 [2021-11-03 05:22:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:54,354 INFO L225 Difference]: With dead ends: 32096 [2021-11-03 05:22:54,354 INFO L226 Difference]: Without dead ends: 20075 [2021-11-03 05:22:54,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:22:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20075 states. [2021-11-03 05:22:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20075 to 19992. [2021-11-03 05:22:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19992 states, 19991 states have (on average 1.5869141113501075) internal successors, (31724), 19991 states have internal predecessors, (31724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19992 states to 19992 states and 31724 transitions. [2021-11-03 05:22:55,904 INFO L78 Accepts]: Start accepts. Automaton has 19992 states and 31724 transitions. Word has length 98 [2021-11-03 05:22:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:55,904 INFO L470 AbstractCegarLoop]: Abstraction has 19992 states and 31724 transitions. [2021-11-03 05:22:55,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 19992 states and 31724 transitions. [2021-11-03 05:22:55,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 05:22:55,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:55,921 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:55,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:22:56,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:22:56,149 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:22:56,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:56,150 INFO L85 PathProgramCache]: Analyzing trace with hash -352111741, now seen corresponding path program 2 times [2021-11-03 05:22:56,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:22:56,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101616271] [2021-11-03 05:22:56,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:22:56,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:22:56,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:22:56,153 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:22:56,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:23:04,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:23:04,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:23:04,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:23:04,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:23:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 05:23:04,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:23:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 05:23:04,843 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:23:04,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101616271] [2021-11-03 05:23:04,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101616271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:04,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:04,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:23:04,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572994743] [2021-11-03 05:23:04,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:23:04,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:23:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:23:04,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:23:04,846 INFO L87 Difference]: Start difference. First operand 19992 states and 31724 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:07,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:07,899 INFO L93 Difference]: Finished difference Result 48967 states and 77961 transitions. [2021-11-03 05:23:07,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:23:07,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 98 [2021-11-03 05:23:07,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:07,998 INFO L225 Difference]: With dead ends: 48967 [2021-11-03 05:23:07,998 INFO L226 Difference]: Without dead ends: 38781 [2021-11-03 05:23:08,019 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:23:08,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38781 states. [2021-11-03 05:23:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38781 to 20162. [2021-11-03 05:23:09,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20162 states, 20161 states have (on average 1.5819651802985963) internal successors, (31894), 20161 states have internal predecessors, (31894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20162 states to 20162 states and 31894 transitions. [2021-11-03 05:23:09,823 INFO L78 Accepts]: Start accepts. Automaton has 20162 states and 31894 transitions. Word has length 98 [2021-11-03 05:23:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:09,823 INFO L470 AbstractCegarLoop]: Abstraction has 20162 states and 31894 transitions. [2021-11-03 05:23:09,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:09,824 INFO L276 IsEmpty]: Start isEmpty. Operand 20162 states and 31894 transitions. [2021-11-03 05:23:09,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 05:23:09,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:09,838 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:23:09,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:23:10,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:23:10,052 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:23:10,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:10,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1665246660, now seen corresponding path program 1 times [2021-11-03 05:23:10,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:23:10,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842750667] [2021-11-03 05:23:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:10,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:23:10,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:23:10,055 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:23:10,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:23:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:11,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:23:11,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:23:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 05:23:11,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:23:11,985 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 05:23:11,986 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:23:11,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842750667] [2021-11-03 05:23:11,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842750667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:11,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:11,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:23:11,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455974668] [2021-11-03 05:23:11,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:23:11,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:23:11,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:23:11,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:23:11,988 INFO L87 Difference]: Start difference. First operand 20162 states and 31894 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:21,775 INFO L93 Difference]: Finished difference Result 57803 states and 91682 transitions. [2021-11-03 05:23:21,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:23:21,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 100 [2021-11-03 05:23:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:21,860 INFO L225 Difference]: With dead ends: 57803 [2021-11-03 05:23:21,860 INFO L226 Difference]: Without dead ends: 37676 [2021-11-03 05:23:21,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:23:21,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37676 states. [2021-11-03 05:23:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37676 to 18491. [2021-11-03 05:23:23,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18491 states, 18490 states have (on average 1.5724175229853976) internal successors, (29074), 18490 states have internal predecessors, (29074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18491 states to 18491 states and 29074 transitions. [2021-11-03 05:23:23,864 INFO L78 Accepts]: Start accepts. Automaton has 18491 states and 29074 transitions. Word has length 100 [2021-11-03 05:23:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:23,864 INFO L470 AbstractCegarLoop]: Abstraction has 18491 states and 29074 transitions. [2021-11-03 05:23:23,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 18491 states and 29074 transitions. [2021-11-03 05:23:23,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 05:23:23,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:23,880 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:23:23,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:23:24,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:23:24,088 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:23:24,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1225114935, now seen corresponding path program 1 times [2021-11-03 05:23:24,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:23:24,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777936965] [2021-11-03 05:23:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:24,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:23:24,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:23:24,091 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:23:24,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:23:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:25,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-03 05:23:25,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:23:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:23:25,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:23:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:23:26,736 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:23:26,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777936965] [2021-11-03 05:23:26,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777936965] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:26,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:26,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-03 05:23:26,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195850275] [2021-11-03 05:23:26,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 05:23:26,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:23:26,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 05:23:26,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:23:26,739 INFO L87 Difference]: Start difference. First operand 18491 states and 29074 transitions. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:35,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:35,169 INFO L93 Difference]: Finished difference Result 61397 states and 97030 transitions. [2021-11-03 05:23:35,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 05:23:35,170 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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 101 [2021-11-03 05:23:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:35,246 INFO L225 Difference]: With dead ends: 61397 [2021-11-03 05:23:35,246 INFO L226 Difference]: Without dead ends: 43364 [2021-11-03 05:23:35,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2021-11-03 05:23:35,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43364 states. [2021-11-03 05:23:36,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43364 to 18491. [2021-11-03 05:23:36,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18491 states, 18490 states have (on average 1.5711195240670632) internal successors, (29050), 18490 states have internal predecessors, (29050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18491 states to 18491 states and 29050 transitions. [2021-11-03 05:23:37,002 INFO L78 Accepts]: Start accepts. Automaton has 18491 states and 29050 transitions. Word has length 101 [2021-11-03 05:23:37,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:37,002 INFO L470 AbstractCegarLoop]: Abstraction has 18491 states and 29050 transitions. [2021-11-03 05:23:37,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 18491 states and 29050 transitions. [2021-11-03 05:23:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 05:23:37,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:37,011 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:23:37,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:23:37,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:23:37,212 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:23:37,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:37,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1918222064, now seen corresponding path program 1 times [2021-11-03 05:23:37,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:23:37,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957326710] [2021-11-03 05:23:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:37,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:23:37,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:23:37,215 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:23:37,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc3ab28e-bbbe-448a-9fa6-8ec6b2ecab35/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:23:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:38,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:23:38,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:23:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:23:39,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:23:39,622 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:23:39,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:23:39,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957326710] [2021-11-03 05:23:39,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957326710] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:39,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:39,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:23:39,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940589906] [2021-11-03 05:23:39,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:23:39,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:23:39,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:23:39,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:23:39,624 INFO L87 Difference]: Start difference. First operand 18491 states and 29050 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:04,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:04,558 INFO L93 Difference]: Finished difference Result 141300 states and 223572 transitions. [2021-11-03 05:24:04,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:24:04,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 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 105 [2021-11-03 05:24:04,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:04,786 INFO L225 Difference]: With dead ends: 141300 [2021-11-03 05:24:04,787 INFO L226 Difference]: Without dead ends: 131459 [2021-11-03 05:24:05,018 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:24:05,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131459 states.