./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:25:50,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:25:50,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:25:50,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:25:50,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:25:50,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:25:50,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:25:50,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:25:50,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:25:50,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:25:50,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:25:50,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:25:50,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:25:50,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:25:50,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:25:50,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:25:50,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:25:50,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:25:50,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:25:50,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:25:50,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:25:50,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:25:50,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:25:50,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:25:50,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:25:50,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:25:50,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:25:50,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:25:50,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:25:50,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:25:50,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:25:50,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:25:50,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:25:50,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:25:50,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:25:50,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:25:50,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:25:50,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:25:50,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:25:50,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:25:50,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:25:50,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:25:50,308 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:25:50,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:25:50,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:25:50,309 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:25:50,310 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:25:50,310 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:25:50,310 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:25:50,310 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:25:50,317 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:25:50,317 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:25:50,318 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:25:50,319 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:25:50,319 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:25:50,319 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:25:50,319 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:25:50,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:25:50,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:25:50,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:25:50,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:25:50,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:25:50,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:25:50,321 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:25:50,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:25:50,322 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:25:50,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:25:50,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:25:50,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:25:50,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:50,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:25:50,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:25:50,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:25:50,325 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:25:50,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:25:50,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:25:50,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:25:50,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:25:50,327 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_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e [2021-11-07 01:25:50,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:25:50,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:25:50,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:25:50,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:25:50,658 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:25:50,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-07 01:25:50,725 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/data/a0c2f8580/80316e2953d746ac9795c6d90434818c/FLAG6dde21ca7 [2021-11-07 01:25:51,538 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:25:51,539 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-07 01:25:51,589 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/data/a0c2f8580/80316e2953d746ac9795c6d90434818c/FLAG6dde21ca7 [2021-11-07 01:25:52,044 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/data/a0c2f8580/80316e2953d746ac9795c6d90434818c [2021-11-07 01:25:52,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:25:52,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:25:52,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:52,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:25:52,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:25:52,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:52" (1/1) ... [2021-11-07 01:25:52,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ad7b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:52, skipping insertion in model container [2021-11-07 01:25:52,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:52" (1/1) ... [2021-11-07 01:25:52,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:25:52,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:25:53,133 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_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-07 01:25:53,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:53,822 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:25:53,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5188f043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:53, skipping insertion in model container [2021-11-07 01:25:53,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:53,824 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:25:53,826 INFO L168 Benchmark]: Toolchain (without parser) took 1776.15 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 62.6 MB in the beginning and 48.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:53,827 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory was 67.8 MB in the beginning and 67.7 MB in the end (delta: 52.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:25:53,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1773.71 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 62.5 MB in the beginning and 48.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:53,830 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory was 67.8 MB in the beginning and 67.7 MB in the end (delta: 52.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1773.71 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 62.5 MB in the beginning and 48.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5524]: 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_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:25:56,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:25:56,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:25:56,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:25:56,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:25:56,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:25:56,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:25:56,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:25:56,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:25:56,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:25:56,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:25:56,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:25:56,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:25:56,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:25:56,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:25:56,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:25:56,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:25:56,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:25:56,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:25:56,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:25:56,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:25:56,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:25:56,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:25:56,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:25:56,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:25:56,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:25:56,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:25:56,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:25:56,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:25:56,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:25:56,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:25:56,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:25:56,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:25:56,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:25:56,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:25:56,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:25:56,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:25:56,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:25:56,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:25:56,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:25:56,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:25:56,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:25:56,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:25:56,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:25:56,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:25:56,314 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:25:56,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:25:56,315 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:25:56,315 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:25:56,315 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:25:56,316 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:25:56,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:25:56,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:25:56,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:25:56,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:25:56,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:25:56,318 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:25:56,318 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:25:56,319 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:25:56,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:25:56,319 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:25:56,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:25:56,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:25:56,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:25:56,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:25:56,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:56,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:25:56,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:25:56,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:25:56,322 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:25:56,323 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:56,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:25:56,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:25:56,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:25:56,324 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_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e [2021-11-07 01:25:56,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:25:56,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:25:56,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:25:56,725 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:25:56,726 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:25:56,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-07 01:25:56,801 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/data/698df13a5/02ef73fd13f541a9bb8e5c063ef7a028/FLAG00b606e6b [2021-11-07 01:25:57,684 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:25:57,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-07 01:25:57,730 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/data/698df13a5/02ef73fd13f541a9bb8e5c063ef7a028/FLAG00b606e6b [2021-11-07 01:25:58,202 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/data/698df13a5/02ef73fd13f541a9bb8e5c063ef7a028 [2021-11-07 01:25:58,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:25:58,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:25:58,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:58,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:25:58,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:25:58,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:58" (1/1) ... [2021-11-07 01:25:58,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6955e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:58, skipping insertion in model container [2021-11-07 01:25:58,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:58" (1/1) ... [2021-11-07 01:25:58,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:25:58,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:25:59,435 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_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-07 01:26:00,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:26:00,110 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:26:00,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:26:00,352 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_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-07 01:26:00,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:26:00,621 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:26:00,787 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-07 01:26:01,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:26:01,086 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:26:01,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:01 WrapperNode [2021-11-07 01:26:01,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:26:01,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:26:01,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:26:01,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:26:01,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:01" (1/1) ... [2021-11-07 01:26:01,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:01" (1/1) ... [2021-11-07 01:26:01,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:26:01,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:26:01,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:26:01,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:26:01,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:01" (1/1) ... [2021-11-07 01:26:01,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:01" (1/1) ... [2021-11-07 01:26:01,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:01" (1/1) ... [2021-11-07 01:26:01,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:01" (1/1) ... [2021-11-07 01:26:02,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:01" (1/1) ... [2021-11-07 01:26:02,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:01" (1/1) ... [2021-11-07 01:26:02,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:01" (1/1) ... [2021-11-07 01:26:02,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:26:02,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:26:02,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:26:02,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:26:02,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:01" (1/1) ... [2021-11-07 01:26:02,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:26:02,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:26:02,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:26:02,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:26:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:26:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:26:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:26:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:26:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:26:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:26:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:26:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:26:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:26:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:26:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:26:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:26:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:26:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:26:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:26:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:26:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:26:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:26:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:26:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:26:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:26:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:26:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:26:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:26:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:26:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:26:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:28:10,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:28:10,734 INFO L299 CfgBuilder]: Removed 3847 assume(true) statements. [2021-11-07 01:28:10,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:28:10 BoogieIcfgContainer [2021-11-07 01:28:10,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:28:10,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:28:10,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:28:10,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:28:10,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:25:58" (1/3) ... [2021-11-07 01:28:10,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6112d480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:28:10, skipping insertion in model container [2021-11-07 01:28:10,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:01" (2/3) ... [2021-11-07 01:28:10,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6112d480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:28:10, skipping insertion in model container [2021-11-07 01:28:10,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:28:10" (3/3) ... [2021-11-07 01:28:10,749 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-07 01:28:10,755 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:28:10,755 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:28:10,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:28:10,825 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:28:10,825 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:28:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 4667 states, 4665 states have (on average 1.4655948553054663) internal successors, (6837), 4666 states have internal predecessors, (6837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:10,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 01:28:10,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:10,918 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] [2021-11-07 01:28:10,919 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:10,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:10,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1642635718, now seen corresponding path program 1 times [2021-11-07 01:28:10,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:10,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715263127] [2021-11-07 01:28:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:10,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:10,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:10,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:10,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:28:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:11,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:28:11,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:11,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:11,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:11,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715263127] [2021-11-07 01:28:11,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715263127] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:11,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:11,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:28:11,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727208585] [2021-11-07 01:28:11,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:28:11,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:11,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:28:11,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:28:12,004 INFO L87 Difference]: Start difference. First operand has 4667 states, 4665 states have (on average 1.4655948553054663) internal successors, (6837), 4666 states have internal predecessors, (6837), 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 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:15,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:15,130 INFO L93 Difference]: Finished difference Result 18568 states and 27219 transitions. [2021-11-07 01:28:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:28:15,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 22 [2021-11-07 01:28:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:15,247 INFO L225 Difference]: With dead ends: 18568 [2021-11-07 01:28:15,247 INFO L226 Difference]: Without dead ends: 13890 [2021-11-07 01:28:15,268 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:28:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13890 states. [2021-11-07 01:28:15,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13890 to 13890. [2021-11-07 01:28:15,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13890 states, 13889 states have (on average 1.4070847433220535) internal successors, (19543), 13889 states have internal predecessors, (19543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13890 states to 13890 states and 19543 transitions. [2021-11-07 01:28:15,864 INFO L78 Accepts]: Start accepts. Automaton has 13890 states and 19543 transitions. Word has length 22 [2021-11-07 01:28:15,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:15,865 INFO L470 AbstractCegarLoop]: Abstraction has 13890 states and 19543 transitions. [2021-11-07 01:28:15,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand 13890 states and 19543 transitions. [2021-11-07 01:28:15,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:28:15,880 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:15,880 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] [2021-11-07 01:28:15,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:16,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:16,095 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:16,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:16,096 INFO L85 PathProgramCache]: Analyzing trace with hash -899430506, now seen corresponding path program 1 times [2021-11-07 01:28:16,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:16,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570211869] [2021-11-07 01:28:16,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:16,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:16,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:16,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:16,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:28:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:16,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:28:16,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:16,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:16,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:16,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570211869] [2021-11-07 01:28:16,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570211869] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:16,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:16,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:28:16,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740691818] [2021-11-07 01:28:16,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:28:16,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:16,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:28:16,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:28:16,985 INFO L87 Difference]: Start difference. First operand 13890 states and 19543 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:18,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:18,208 INFO L93 Difference]: Finished difference Result 27756 states and 39057 transitions. [2021-11-07 01:28:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:28:18,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2021-11-07 01:28:18,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:18,306 INFO L225 Difference]: With dead ends: 27756 [2021-11-07 01:28:18,306 INFO L226 Difference]: Without dead ends: 13889 [2021-11-07 01:28:18,326 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:28:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13889 states. [2021-11-07 01:28:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13889 to 13889. [2021-11-07 01:28:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13889 states, 13888 states have (on average 1.4068980414746544) internal successors, (19539), 13888 states have internal predecessors, (19539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 19539 transitions. [2021-11-07 01:28:18,942 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 19539 transitions. Word has length 26 [2021-11-07 01:28:18,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:18,943 INFO L470 AbstractCegarLoop]: Abstraction has 13889 states and 19539 transitions. [2021-11-07 01:28:18,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:18,944 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 19539 transitions. [2021-11-07 01:28:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:28:18,947 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:18,948 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:28:18,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:19,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:19,166 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:19,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:19,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1619061827, now seen corresponding path program 1 times [2021-11-07 01:28:19,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:19,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995119146] [2021-11-07 01:28:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:19,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:19,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:19,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:19,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:28:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:19,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:28:19,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:28:20,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:28:20,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:20,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995119146] [2021-11-07 01:28:20,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995119146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:20,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:20,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:28:20,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546719156] [2021-11-07 01:28:20,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:28:20,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:20,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:28:20,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:28:20,406 INFO L87 Difference]: Start difference. First operand 13889 states and 19539 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:23,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:23,908 INFO L93 Difference]: Finished difference Result 41619 states and 58562 transitions. [2021-11-07 01:28:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:28:23,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-07 01:28:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:23,993 INFO L225 Difference]: With dead ends: 41619 [2021-11-07 01:28:23,993 INFO L226 Difference]: Without dead ends: 27749 [2021-11-07 01:28:24,016 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:28:24,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27749 states. [2021-11-07 01:28:25,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27749 to 27389. [2021-11-07 01:28:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27389 states, 27388 states have (on average 1.4085365853658536) internal successors, (38577), 27388 states have internal predecessors, (38577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27389 states to 27389 states and 38577 transitions. [2021-11-07 01:28:25,158 INFO L78 Accepts]: Start accepts. Automaton has 27389 states and 38577 transitions. Word has length 38 [2021-11-07 01:28:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:25,161 INFO L470 AbstractCegarLoop]: Abstraction has 27389 states and 38577 transitions. [2021-11-07 01:28:25,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:25,161 INFO L276 IsEmpty]: Start isEmpty. Operand 27389 states and 38577 transitions. [2021-11-07 01:28:25,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:28:25,176 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:25,176 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:28:25,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:25,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:25,395 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:25,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:25,396 INFO L85 PathProgramCache]: Analyzing trace with hash -770183526, now seen corresponding path program 1 times [2021-11-07 01:28:25,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:25,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518517508] [2021-11-07 01:28:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:25,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:25,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:25,402 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:25,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:28:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:26,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:28:26,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:28:26,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:28:26,654 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:26,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518517508] [2021-11-07 01:28:26,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518517508] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:26,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:26,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:28:26,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122907752] [2021-11-07 01:28:26,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:28:26,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:26,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:28:26,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:28:26,657 INFO L87 Difference]: Start difference. First operand 27389 states and 38577 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:28,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:28,154 INFO L93 Difference]: Finished difference Result 71571 states and 100780 transitions. [2021-11-07 01:28:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:28:28,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 59 [2021-11-07 01:28:28,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:28,266 INFO L225 Difference]: With dead ends: 71571 [2021-11-07 01:28:28,266 INFO L226 Difference]: Without dead ends: 44205 [2021-11-07 01:28:28,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:28:28,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44205 states. [2021-11-07 01:28:30,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44205 to 44181. [2021-11-07 01:28:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44181 states, 44180 states have (on average 1.4078542326844725) internal successors, (62199), 44180 states have internal predecessors, (62199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44181 states to 44181 states and 62199 transitions. [2021-11-07 01:28:30,127 INFO L78 Accepts]: Start accepts. Automaton has 44181 states and 62199 transitions. Word has length 59 [2021-11-07 01:28:30,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:30,128 INFO L470 AbstractCegarLoop]: Abstraction has 44181 states and 62199 transitions. [2021-11-07 01:28:30,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand 44181 states and 62199 transitions. [2021-11-07 01:28:30,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:28:30,140 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:30,141 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:28:30,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:30,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:30,355 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:30,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:30,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1015760832, now seen corresponding path program 2 times [2021-11-07 01:28:30,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:30,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350009226] [2021-11-07 01:28:30,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:28:30,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:30,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:30,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:30,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:28:40,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:28:40,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:28:40,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:28:40,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:40,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:41,037 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:41,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350009226] [2021-11-07 01:28:41,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350009226] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:41,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:41,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:28:41,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548716652] [2021-11-07 01:28:41,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:28:41,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:41,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:28:41,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:28:41,039 INFO L87 Difference]: Start difference. First operand 44181 states and 62199 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:45,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:45,590 INFO L93 Difference]: Finished difference Result 114441 states and 161182 transitions. [2021-11-07 01:28:45,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:28:45,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 59 [2021-11-07 01:28:45,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:45,774 INFO L225 Difference]: With dead ends: 114441 [2021-11-07 01:28:45,775 INFO L226 Difference]: Without dead ends: 78917 [2021-11-07 01:28:45,849 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:28:45,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78917 states. [2021-11-07 01:28:48,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78917 to 78869. [2021-11-07 01:28:48,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78869 states, 78868 states have (on average 1.4080362124055383) internal successors, (111049), 78868 states have internal predecessors, (111049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78869 states to 78869 states and 111049 transitions. [2021-11-07 01:28:49,136 INFO L78 Accepts]: Start accepts. Automaton has 78869 states and 111049 transitions. Word has length 59 [2021-11-07 01:28:49,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:49,137 INFO L470 AbstractCegarLoop]: Abstraction has 78869 states and 111049 transitions. [2021-11-07 01:28:49,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand 78869 states and 111049 transitions. [2021-11-07 01:28:49,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 01:28:49,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:49,181 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 01:28:49,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:28:49,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:49,382 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:49,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:49,383 INFO L85 PathProgramCache]: Analyzing trace with hash 638916036, now seen corresponding path program 1 times [2021-11-07 01:28:49,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:49,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932149374] [2021-11-07 01:28:49,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:49,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:49,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:49,385 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:49,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:28:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:50,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:28:50,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:28:50,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:28:50,672 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:50,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932149374] [2021-11-07 01:28:50,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932149374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:50,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:50,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:28:50,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117937282] [2021-11-07 01:28:50,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:28:50,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:50,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:28:50,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:28:50,675 INFO L87 Difference]: Start difference. First operand 78869 states and 111049 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:00,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:00,562 INFO L93 Difference]: Finished difference Result 253785 states and 357334 transitions. [2021-11-07 01:29:00,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:29:00,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 86 [2021-11-07 01:29:00,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:01,272 INFO L225 Difference]: With dead ends: 253785 [2021-11-07 01:29:01,273 INFO L226 Difference]: Without dead ends: 183573 [2021-11-07 01:29:01,432 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:29:01,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183573 states. [2021-11-07 01:29:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183573 to 78877. [2021-11-07 01:29:05,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78877 states, 78876 states have (on average 1.407994827323901) internal successors, (111057), 78876 states have internal predecessors, (111057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:05,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78877 states to 78877 states and 111057 transitions. [2021-11-07 01:29:05,734 INFO L78 Accepts]: Start accepts. Automaton has 78877 states and 111057 transitions. Word has length 86 [2021-11-07 01:29:05,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:05,735 INFO L470 AbstractCegarLoop]: Abstraction has 78877 states and 111057 transitions. [2021-11-07 01:29:05,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:05,735 INFO L276 IsEmpty]: Start isEmpty. Operand 78877 states and 111057 transitions. [2021-11-07 01:29:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 01:29:05,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:05,775 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 01:29:05,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:06,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:06,003 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:29:06,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:06,004 INFO L85 PathProgramCache]: Analyzing trace with hash -280928408, now seen corresponding path program 1 times [2021-11-07 01:29:06,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:06,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706660695] [2021-11-07 01:29:06,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:06,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:06,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:06,005 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:06,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b4d58a5-0ea6-4481-bd0c-7aacda2a3f62/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:29:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:06,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:29:06,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-07 01:29:06,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-07 01:29:07,177 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:07,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706660695] [2021-11-07 01:29:07,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706660695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:07,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:07,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:29:07,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261625219] [2021-11-07 01:29:07,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:29:07,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:07,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:29:07,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:29:07,180 INFO L87 Difference]: Start difference. First operand 78877 states and 111057 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:13,276 INFO L93 Difference]: Finished difference Result 194377 states and 273729 transitions. [2021-11-07 01:29:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:29:13,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-07 01:29:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:13,750 INFO L225 Difference]: With dead ends: 194377 [2021-11-07 01:29:13,750 INFO L226 Difference]: Without dead ends: 154449 [2021-11-07 01:29:13,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:29:13,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154449 states.