./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/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_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/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 32bit --witnessprinter.graph.data.programhash 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:24:28,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:24:28,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:24:28,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:24:28,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:24:28,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:24:28,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:24:28,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:24:28,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:24:28,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:24:28,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:24:28,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:24:28,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:24:28,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:24:28,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:24:28,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:24:28,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:24:28,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:24:28,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:24:28,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:24:28,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:24:28,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:24:28,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:24:28,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:24:28,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:24:28,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:24:28,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:24:28,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:24:28,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:24:28,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:24:28,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:24:28,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:24:28,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:24:28,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:24:28,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:24:28,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:24:28,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:24:28,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:24:28,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:24:28,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:24:28,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:24:28,373 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:24:28,399 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:24:28,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:24:28,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:24:28,400 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:24:28,400 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:24:28,400 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:24:28,401 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:24:28,401 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:24:28,401 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:24:28,401 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:24:28,401 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:24:28,402 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:24:28,402 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:24:28,402 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:24:28,402 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:24:28,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:24:28,403 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:24:28,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:24:28,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:24:28,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:24:28,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:24:28,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:24:28,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:24:28,405 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:24:28,405 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:24:28,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:24:28,405 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:24:28,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:24:28,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:24:28,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:24:28,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:24:28,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:24:28,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:24:28,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:24:28,407 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:24:28,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:24:28,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:24:28,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:24:28,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:24:28,408 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_ea1ed58d-f494-47fc-9266-fef216ab93e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2021-11-07 02:24:28,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:24:28,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:24:28,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:24:28,704 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:24:28,705 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:24:28,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-07 02:24:28,796 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/data/80849faf3/d685b54785cf42d4907c71d40eb05e84/FLAG3d794ffa2 [2021-11-07 02:24:29,453 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:24:29,458 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-07 02:24:29,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/data/80849faf3/d685b54785cf42d4907c71d40eb05e84/FLAG3d794ffa2 [2021-11-07 02:24:29,660 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/data/80849faf3/d685b54785cf42d4907c71d40eb05e84 [2021-11-07 02:24:29,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:24:29,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:24:29,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:24:29,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:24:29,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:24:29,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:29" (1/1) ... [2021-11-07 02:24:29,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7468cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:29, skipping insertion in model container [2021-11-07 02:24:29,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:29" (1/1) ... [2021-11-07 02:24:29,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:24:29,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:24:30,206 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_ea1ed58d-f494-47fc-9266-fef216ab93e9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2021-11-07 02:24:30,410 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_ea1ed58d-f494-47fc-9266-fef216ab93e9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2021-11-07 02:24:30,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:24:30,427 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 02:24:30,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b4bfab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:30, skipping insertion in model container [2021-11-07 02:24:30,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:24:30,428 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:24:30,431 INFO L168 Benchmark]: Toolchain (without parser) took 765.24 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 66.9 MB in the beginning and 87.7 MB in the end (delta: -20.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:24:30,432 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory was 58.3 MB in the beginning and 58.3 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:24:30,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.54 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 66.6 MB in the beginning and 87.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:24:30,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory was 58.3 MB in the beginning and 58.3 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 762.54 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 66.6 MB in the beginning and 87.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/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_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/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 32bit --witnessprinter.graph.data.programhash 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:24:33,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:24:33,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:24:33,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:24:33,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:24:33,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:24:33,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:24:33,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:24:33,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:24:33,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:24:33,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:24:33,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:24:33,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:24:33,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:24:33,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:24:33,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:24:33,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:24:33,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:24:33,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:24:33,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:24:33,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:24:33,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:24:33,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:24:33,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:24:33,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:24:33,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:24:33,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:24:33,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:24:33,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:24:33,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:24:33,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:24:33,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:24:33,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:24:33,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:24:33,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:24:33,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:24:33,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:24:33,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:24:33,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:24:33,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:24:33,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:24:33,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:24:33,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:24:33,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:24:33,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:24:33,256 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:24:33,256 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:24:33,256 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:24:33,256 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:24:33,257 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:24:33,257 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:24:33,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:24:33,259 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:24:33,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:24:33,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:24:33,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:24:33,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:24:33,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:24:33,261 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:24:33,261 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:24:33,261 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:24:33,261 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:24:33,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:24:33,262 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:24:33,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:24:33,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:24:33,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:24:33,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:24:33,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:24:33,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:24:33,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:24:33,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:24:33,264 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:24:33,264 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:24:33,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:24:33,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:24:33,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:24:33,265 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_ea1ed58d-f494-47fc-9266-fef216ab93e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2021-11-07 02:24:33,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:24:33,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:24:33,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:24:33,680 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:24:33,681 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:24:33,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-07 02:24:33,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/data/5d75d09b6/e5aa6a87adbf445e93d559da61650aa2/FLAGee06e3882 [2021-11-07 02:24:34,468 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:24:34,472 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-07 02:24:34,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/data/5d75d09b6/e5aa6a87adbf445e93d559da61650aa2/FLAGee06e3882 [2021-11-07 02:24:34,651 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/data/5d75d09b6/e5aa6a87adbf445e93d559da61650aa2 [2021-11-07 02:24:34,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:24:34,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:24:34,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:24:34,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:24:34,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:24:34,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:34" (1/1) ... [2021-11-07 02:24:34,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cd69e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:34, skipping insertion in model container [2021-11-07 02:24:34,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:34" (1/1) ... [2021-11-07 02:24:34,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:24:34,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:24:35,355 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_ea1ed58d-f494-47fc-9266-fef216ab93e9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2021-11-07 02:24:35,499 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_ea1ed58d-f494-47fc-9266-fef216ab93e9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2021-11-07 02:24:35,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:24:35,533 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:24:35,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:24:35,594 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_ea1ed58d-f494-47fc-9266-fef216ab93e9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2021-11-07 02:24:35,698 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_ea1ed58d-f494-47fc-9266-fef216ab93e9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2021-11-07 02:24:35,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:24:35,707 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:24:35,754 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_ea1ed58d-f494-47fc-9266-fef216ab93e9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2021-11-07 02:24:35,843 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_ea1ed58d-f494-47fc-9266-fef216ab93e9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2021-11-07 02:24:35,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:24:35,901 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:24:35,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35 WrapperNode [2021-11-07 02:24:35,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:24:35,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:24:35,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:24:35,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:24:35,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2021-11-07 02:24:35,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2021-11-07 02:24:36,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:24:36,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:24:36,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:24:36,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:24:36,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2021-11-07 02:24:36,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2021-11-07 02:24:36,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2021-11-07 02:24:36,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2021-11-07 02:24:36,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2021-11-07 02:24:36,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2021-11-07 02:24:36,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2021-11-07 02:24:36,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:24:36,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:24:36,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:24:36,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:24:36,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (1/1) ... [2021-11-07 02:24:36,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:24:36,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:24:36,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:24:36,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:24:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:24:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:24:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:24:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:24:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:24:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 02:24:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:24:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:24:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:24:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:24:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:24:36,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:24:43,563 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:24:43,563 INFO L299 CfgBuilder]: Removed 136 assume(true) statements. [2021-11-07 02:24:43,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:24:43 BoogieIcfgContainer [2021-11-07 02:24:43,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:24:43,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:24:43,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:24:43,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:24:43,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:24:34" (1/3) ... [2021-11-07 02:24:43,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0562e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:24:43, skipping insertion in model container [2021-11-07 02:24:43,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35" (2/3) ... [2021-11-07 02:24:43,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0562e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:24:43, skipping insertion in model container [2021-11-07 02:24:43,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:24:43" (3/3) ... [2021-11-07 02:24:43,574 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-1.i [2021-11-07 02:24:43,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:24:43,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-07 02:24:43,631 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:24:43,637 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 02:24:43,638 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-07 02:24:43,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 270 states have (on average 1.7925925925925925) internal successors, (484), 301 states have internal predecessors, (484), 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 02:24:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 02:24:43,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:43,666 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:43,667 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:24:43,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash -109840528, now seen corresponding path program 1 times [2021-11-07 02:24:43,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:43,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245919083] [2021-11-07 02:24:43,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:43,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:43,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:43,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:43,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:24:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:43,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:24:43,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:43,954 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 02:24:43,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:43,993 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 02:24:43,995 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:43,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245919083] [2021-11-07 02:24:43,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245919083] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:43,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:43,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:24:43,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696454616] [2021-11-07 02:24:44,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:24:44,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:44,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:24:44,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:24:44,025 INFO L87 Difference]: Start difference. First operand has 302 states, 270 states have (on average 1.7925925925925925) internal successors, (484), 301 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 02:24:44,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:44,099 INFO L93 Difference]: Finished difference Result 602 states and 966 transitions. [2021-11-07 02:24:44,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:24:44,101 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-07 02:24:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:44,123 INFO L225 Difference]: With dead ends: 602 [2021-11-07 02:24:44,124 INFO L226 Difference]: Without dead ends: 298 [2021-11-07 02:24:44,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:24:44,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-07 02:24:44,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-11-07 02:24:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 267 states have (on average 1.4344569288389513) internal successors, (383), 297 states have internal predecessors, (383), 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 02:24:44,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 383 transitions. [2021-11-07 02:24:44,181 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 383 transitions. Word has length 9 [2021-11-07 02:24:44,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:44,182 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 383 transitions. [2021-11-07 02:24:44,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 02:24:44,182 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 383 transitions. [2021-11-07 02:24:44,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:24:44,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:44,185 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:44,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:44,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:44,390 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:24:44,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:44,391 INFO L85 PathProgramCache]: Analyzing trace with hash 518597571, now seen corresponding path program 1 times [2021-11-07 02:24:44,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:44,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726081593] [2021-11-07 02:24:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:44,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:44,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:44,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:44,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:24:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:44,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:24:44,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:44,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:45,094 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 02:24:45,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:45,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726081593] [2021-11-07 02:24:45,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726081593] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:45,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:45,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:24:45,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295856881] [2021-11-07 02:24:45,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:24:45,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:45,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:24:45,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:24:45,107 INFO L87 Difference]: Start difference. First operand 298 states and 383 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 02:24:45,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:45,332 INFO L93 Difference]: Finished difference Result 451 states and 581 transitions. [2021-11-07 02:24:45,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:24:45,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 44 [2021-11-07 02:24:45,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:45,339 INFO L225 Difference]: With dead ends: 451 [2021-11-07 02:24:45,339 INFO L226 Difference]: Without dead ends: 307 [2021-11-07 02:24:45,344 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:24:45,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-07 02:24:45,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2021-11-07 02:24:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 270 states have (on average 1.4) internal successors, (378), 300 states have internal predecessors, (378), 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 02:24:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 378 transitions. [2021-11-07 02:24:45,406 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 378 transitions. Word has length 44 [2021-11-07 02:24:45,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:45,406 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 378 transitions. [2021-11-07 02:24:45,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 02:24:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 378 transitions. [2021-11-07 02:24:45,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:24:45,409 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:45,409 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:45,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:45,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:45,610 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:24:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:45,611 INFO L85 PathProgramCache]: Analyzing trace with hash -230237769, now seen corresponding path program 1 times [2021-11-07 02:24:45,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:45,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214646952] [2021-11-07 02:24:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:45,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:45,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:45,613 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:45,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:24:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:45,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:24:45,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:45,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:24:45,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:24:45,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:24:46,078 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 02:24:46,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 02:24:46,179 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 02:24:46,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 02:24:46,323 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 02:24:46,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:46,543 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 02:24:46,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:46,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214646952] [2021-11-07 02:24:46,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214646952] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:46,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:46,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:24:46,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22021517] [2021-11-07 02:24:46,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:24:46,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:46,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:24:46,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:24:46,547 INFO L87 Difference]: Start difference. First operand 301 states and 378 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 02:24:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:55,051 INFO L93 Difference]: Finished difference Result 768 states and 954 transitions. [2021-11-07 02:24:55,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:24:55,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 44 [2021-11-07 02:24:55,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:55,056 INFO L225 Difference]: With dead ends: 768 [2021-11-07 02:24:55,057 INFO L226 Difference]: Without dead ends: 620 [2021-11-07 02:24:55,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:24:55,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-11-07 02:24:55,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 303. [2021-11-07 02:24:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 272 states have (on average 1.3970588235294117) internal successors, (380), 302 states have internal predecessors, (380), 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 02:24:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 380 transitions. [2021-11-07 02:24:55,090 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 380 transitions. Word has length 44 [2021-11-07 02:24:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:55,100 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 380 transitions. [2021-11-07 02:24:55,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 02:24:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 380 transitions. [2021-11-07 02:24:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 02:24:55,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:55,106 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:55,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:55,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:55,322 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:24:55,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1543983351, now seen corresponding path program 1 times [2021-11-07 02:24:55,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:55,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523705699] [2021-11-07 02:24:55,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:55,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:55,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:55,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:55,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:24:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:55,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:24:55,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:55,814 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 02:24:55,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:56,045 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 02:24:56,045 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:56,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523705699] [2021-11-07 02:24:56,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523705699] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:56,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:56,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:24:56,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727860844] [2021-11-07 02:24:56,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:24:56,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:56,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:24:56,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:24:56,048 INFO L87 Difference]: Start difference. First operand 303 states and 380 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 02:24:56,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:56,210 INFO L93 Difference]: Finished difference Result 611 states and 768 transitions. [2021-11-07 02:24:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:24:56,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 02:24:56,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:56,213 INFO L225 Difference]: With dead ends: 611 [2021-11-07 02:24:56,213 INFO L226 Difference]: Without dead ends: 312 [2021-11-07 02:24:56,214 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:24:56,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-07 02:24:56,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 306. [2021-11-07 02:24:56,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 275 states have (on average 1.3636363636363635) internal successors, (375), 305 states have internal predecessors, (375), 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 02:24:56,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 375 transitions. [2021-11-07 02:24:56,232 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 375 transitions. Word has length 57 [2021-11-07 02:24:56,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:56,232 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 375 transitions. [2021-11-07 02:24:56,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 02:24:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 375 transitions. [2021-11-07 02:24:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 02:24:56,247 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:56,247 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:56,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:56,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:56,465 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:24:56,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:56,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1996694677, now seen corresponding path program 1 times [2021-11-07 02:24:56,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:56,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561099086] [2021-11-07 02:24:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:56,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:56,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:56,469 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:56,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:24:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:56,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:24:56,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:57,374 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 02:24:57,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:57,819 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 02:24:57,819 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:57,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561099086] [2021-11-07 02:24:57,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561099086] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:57,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:57,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:24:57,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619294103] [2021-11-07 02:24:57,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:24:57,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:24:57,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:24:57,822 INFO L87 Difference]: Start difference. First operand 306 states and 375 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 02:24:58,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:58,696 INFO L93 Difference]: Finished difference Result 779 states and 950 transitions. [2021-11-07 02:24:58,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:24:58,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 02:24:58,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:58,700 INFO L225 Difference]: With dead ends: 779 [2021-11-07 02:24:58,701 INFO L226 Difference]: Without dead ends: 477 [2021-11-07 02:24:58,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 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 02:24:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-07 02:24:58,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 444. [2021-11-07 02:24:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 413 states have (on average 1.3559322033898304) internal successors, (560), 443 states have internal predecessors, (560), 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 02:24:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 560 transitions. [2021-11-07 02:24:58,725 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 560 transitions. Word has length 57 [2021-11-07 02:24:58,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:58,726 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 560 transitions. [2021-11-07 02:24:58,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 02:24:58,726 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 560 transitions. [2021-11-07 02:24:58,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 02:24:58,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:58,728 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:58,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:58,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:58,944 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:24:58,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:58,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1378561412, now seen corresponding path program 1 times [2021-11-07 02:24:58,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:58,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971253851] [2021-11-07 02:24:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:58,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:58,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:58,949 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:58,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:24:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:59,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:24:59,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:59,610 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 02:24:59,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:59,801 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 02:24:59,801 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:59,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971253851] [2021-11-07 02:24:59,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971253851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:59,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:59,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:24:59,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98817896] [2021-11-07 02:24:59,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:24:59,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:59,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:24:59,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:24:59,804 INFO L87 Difference]: Start difference. First operand 444 states and 560 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:59,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:59,886 INFO L93 Difference]: Finished difference Result 846 states and 1077 transitions. [2021-11-07 02:24:59,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:24:59,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 02:24:59,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:59,891 INFO L225 Difference]: With dead ends: 846 [2021-11-07 02:24:59,891 INFO L226 Difference]: Without dead ends: 447 [2021-11-07 02:24:59,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:24:59,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-07 02:24:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2021-11-07 02:24:59,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 416 states have (on average 1.3533653846153846) internal successors, (563), 446 states have internal predecessors, (563), 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 02:24:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 563 transitions. [2021-11-07 02:24:59,925 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 563 transitions. Word has length 64 [2021-11-07 02:24:59,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:59,927 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 563 transitions. [2021-11-07 02:24:59,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:59,928 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 563 transitions. [2021-11-07 02:24:59,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 02:24:59,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:59,930 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:59,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:25:00,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:25:00,151 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:25:00,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:25:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1549801264, now seen corresponding path program 1 times [2021-11-07 02:25:00,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:25:00,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696809587] [2021-11-07 02:25:00,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:25:00,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:25:00,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:25:00,155 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:25:00,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:25:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:25:00,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:25:00,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:25:00,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:25:01,077 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:25:01,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696809587] [2021-11-07 02:25:01,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696809587] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:25:01,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1283520003] [2021-11-07 02:25:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:25:01,078 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:25:01,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:25:01,089 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:25:01,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:25:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:25:01,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:25:01,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:25:01,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:25:02,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1283520003] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:25:02,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820368697] [2021-11-07 02:25:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:25:02,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:25:02,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:25:02,103 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:25:02,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 02:25:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:25:02,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:25:02,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:25:02,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:03,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:25:03,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820368697] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:25:03,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:25:03,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 02:25:03,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202923244] [2021-11-07 02:25:03,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:25:03,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:25:03,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:25:03,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:25:03,157 INFO L87 Difference]: Start difference. First operand 447 states and 563 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:25:03,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:25:03,565 INFO L93 Difference]: Finished difference Result 857 states and 1093 transitions. [2021-11-07 02:25:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:25:03,566 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 02:25:03,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:25:03,571 INFO L225 Difference]: With dead ends: 857 [2021-11-07 02:25:03,572 INFO L226 Difference]: Without dead ends: 455 [2021-11-07 02:25:03,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:25:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-11-07 02:25:03,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2021-11-07 02:25:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 424 states have (on average 1.346698113207547) internal successors, (571), 454 states have internal predecessors, (571), 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 02:25:03,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 571 transitions. [2021-11-07 02:25:03,594 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 571 transitions. Word has length 67 [2021-11-07 02:25:03,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:25:03,594 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 571 transitions. [2021-11-07 02:25:03,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:25:03,595 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 571 transitions. [2021-11-07 02:25:03,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 02:25:03,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:25:03,596 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:03,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:25:03,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:25:04,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:25:04,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:25:04,217 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:25:04,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:25:04,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2058382096, now seen corresponding path program 2 times [2021-11-07 02:25:04,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:25:04,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25467368] [2021-11-07 02:25:04,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:25:04,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:25:04,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:25:04,224 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:25:04,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:25:06,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:25:06,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:25:06,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:25:06,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 02:25:06,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:07,136 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 02:25:07,136 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:25:07,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25467368] [2021-11-07 02:25:07,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25467368] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:25:07,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [816863941] [2021-11-07 02:25:07,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:25:07,137 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:25:07,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:25:07,137 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:25:07,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 02:25:21,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:25:21,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:25:21,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:25:21,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 02:25:21,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 02:25:22,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [816863941] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:25:22,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497007303] [2021-11-07 02:25:22,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:25:22,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:25:22,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:25:22,041 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:25:22,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea1ed58d-f494-47fc-9266-fef216ab93e9/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process