./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.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_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/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_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/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_b3db7659-8798-4dc5-98e3-c8f906716d4a/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 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:11:51,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:11:51,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:11:51,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:11:51,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:11:51,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:11:51,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:11:51,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:11:51,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:11:51,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:11:51,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:11:51,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:11:51,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:11:51,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:11:51,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:11:51,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:11:51,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:11:51,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:11:51,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:11:51,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:11:51,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:11:51,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:11:51,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:11:51,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:11:51,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:11:51,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:11:51,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:11:51,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:11:51,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:11:51,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:11:51,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:11:51,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:11:51,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:11:51,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:11:51,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:11:51,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:11:51,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:11:51,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:11:51,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:11:51,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:11:51,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:11:51,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:11:51,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:11:51,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:11:51,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:11:51,497 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:11:51,497 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:11:51,498 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:11:51,498 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:11:51,498 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:11:51,498 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:11:51,499 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:11:51,500 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:11:51,500 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:11:51,500 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:11:51,501 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:11:51,501 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:11:51,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:11:51,502 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:11:51,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:11:51,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:11:51,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:11:51,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:11:51,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:11:51,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:11:51,504 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:11:51,504 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:11:51,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:11:51,505 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:11:51,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:11:51,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:11:51,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:11:51,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:11:51,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:11:51,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:11:51,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:11:51,507 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:11:51,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:11:51,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:11:51,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:11:51,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:11:51,509 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_b3db7659-8798-4dc5-98e3-c8f906716d4a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c [2021-11-07 01:11:51,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:11:51,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:11:51,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:11:51,844 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:11:51,845 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:11:51,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2021-11-07 01:11:51,911 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/data/f5305ca6d/e28844d8fd0c4093914820c3b3f8b01e/FLAGe87ce01fa [2021-11-07 01:11:52,659 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:11:52,660 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2021-11-07 01:11:52,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/data/f5305ca6d/e28844d8fd0c4093914820c3b3f8b01e/FLAGe87ce01fa [2021-11-07 01:11:52,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/data/f5305ca6d/e28844d8fd0c4093914820c3b3f8b01e [2021-11-07 01:11:52,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:11:52,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:11:52,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:52,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:11:52,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:11:52,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:52" (1/1) ... [2021-11-07 01:11:52,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a95cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:52, skipping insertion in model container [2021-11-07 01:11:52,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:52" (1/1) ... [2021-11-07 01:11:52,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:11:52,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:11:53,506 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_b3db7659-8798-4dc5-98e3-c8f906716d4a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[33021,33034] [2021-11-07 01:11:53,789 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_b3db7659-8798-4dc5-98e3-c8f906716d4a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[84583,84596] [2021-11-07 01:11:53,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:53,822 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:11:53,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@34130b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:53, skipping insertion in model container [2021-11-07 01:11:53,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:53,827 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:11:53,829 INFO L168 Benchmark]: Toolchain (without parser) took 1027.66 ms. Allocated memory is still 157.3 MB. Free memory was 121.5 MB in the beginning and 110.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:11:53,831 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:11:53,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1022.18 ms. Allocated memory is still 157.3 MB. Free memory was 121.5 MB in the beginning and 110.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:11:53,834 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1022.18 ms. Allocated memory is still 157.3 MB. Free memory was 121.5 MB in the beginning and 110.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/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_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/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_b3db7659-8798-4dc5-98e3-c8f906716d4a/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 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:11:56,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:11:56,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:11:56,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:11:56,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:11:56,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:11:56,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:11:56,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:11:56,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:11:56,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:11:56,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:11:56,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:11:56,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:11:56,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:11:56,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:11:56,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:11:56,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:11:56,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:11:56,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:11:56,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:11:56,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:11:56,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:11:56,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:11:56,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:11:56,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:11:56,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:11:56,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:11:56,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:11:56,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:11:56,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:11:56,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:11:56,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:11:56,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:11:56,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:11:56,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:11:56,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:11:56,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:11:56,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:11:56,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:11:56,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:11:56,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:11:56,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:11:56,334 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:11:56,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:11:56,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:11:56,336 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:11:56,336 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:11:56,336 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:11:56,336 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:11:56,340 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:11:56,340 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:11:56,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:11:56,341 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:11:56,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:11:56,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:11:56,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:11:56,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:11:56,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:11:56,343 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:11:56,343 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:11:56,343 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:11:56,343 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:11:56,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:11:56,344 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:11:56,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:11:56,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:11:56,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:11:56,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:11:56,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:11:56,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:11:56,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:11:56,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:11:56,347 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:11:56,348 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:11:56,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:11:56,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:11:56,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:11:56,349 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_b3db7659-8798-4dc5-98e3-c8f906716d4a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c [2021-11-07 01:11:56,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:11:56,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:11:56,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:11:56,770 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:11:56,771 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:11:56,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2021-11-07 01:11:56,849 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/data/353ea18c9/3176a1badfb34ceba236c8b35271b79e/FLAGe2dd86c21 [2021-11-07 01:11:57,660 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:11:57,661 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2021-11-07 01:11:57,691 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/data/353ea18c9/3176a1badfb34ceba236c8b35271b79e/FLAGe2dd86c21 [2021-11-07 01:11:57,765 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/data/353ea18c9/3176a1badfb34ceba236c8b35271b79e [2021-11-07 01:11:57,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:11:57,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:11:57,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:57,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:11:57,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:11:57,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:57" (1/1) ... [2021-11-07 01:11:57,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db66418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:57, skipping insertion in model container [2021-11-07 01:11:57,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:57" (1/1) ... [2021-11-07 01:11:57,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:11:57,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:11:58,440 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_b3db7659-8798-4dc5-98e3-c8f906716d4a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[33021,33034] [2021-11-07 01:11:58,791 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_b3db7659-8798-4dc5-98e3-c8f906716d4a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[84583,84596] [2021-11-07 01:11:58,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:58,828 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:11:58,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:11:58,897 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_b3db7659-8798-4dc5-98e3-c8f906716d4a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[33021,33034] [2021-11-07 01:11:59,071 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_b3db7659-8798-4dc5-98e3-c8f906716d4a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[84583,84596] [2021-11-07 01:11:59,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:59,102 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:11:59,151 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_b3db7659-8798-4dc5-98e3-c8f906716d4a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[33021,33034] [2021-11-07 01:11:59,252 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_b3db7659-8798-4dc5-98e3-c8f906716d4a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i[84583,84596] [2021-11-07 01:11:59,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:59,310 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:11:59,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:59 WrapperNode [2021-11-07 01:11:59,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:59,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:11:59,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:11:59,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:11:59,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:59" (1/1) ... [2021-11-07 01:11:59,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:59" (1/1) ... [2021-11-07 01:11:59,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:11:59,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:11:59,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:11:59,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:11:59,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:59" (1/1) ... [2021-11-07 01:11:59,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:59" (1/1) ... [2021-11-07 01:11:59,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:59" (1/1) ... [2021-11-07 01:11:59,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:59" (1/1) ... [2021-11-07 01:11:59,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:59" (1/1) ... [2021-11-07 01:11:59,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:59" (1/1) ... [2021-11-07 01:11:59,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:59" (1/1) ... [2021-11-07 01:11:59,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:11:59,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:11:59,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:11:59,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:11:59,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:59" (1/1) ... [2021-11-07 01:11:59,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:11:59,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:11:59,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:12:00,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:12:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:12:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:12:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:12:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:12:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:12:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:12:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:12:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:12:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:12:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:12:00,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:12:00,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:12:10,586 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:12:10,586 INFO L299 CfgBuilder]: Removed 1075 assume(true) statements. [2021-11-07 01:12:10,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:12:10 BoogieIcfgContainer [2021-11-07 01:12:10,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:12:10,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:12:10,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:12:10,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:12:10,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:11:57" (1/3) ... [2021-11-07 01:12:10,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c80f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:12:10, skipping insertion in model container [2021-11-07 01:12:10,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:59" (2/3) ... [2021-11-07 01:12:10,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c80f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:12:10, skipping insertion in model container [2021-11-07 01:12:10,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:12:10" (3/3) ... [2021-11-07 01:12:10,606 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test9-2.i [2021-11-07 01:12:10,613 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:12:10,614 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 501 error locations. [2021-11-07 01:12:10,692 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:12:10,706 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:12:10,707 INFO L340 AbstractCegarLoop]: Starting to check reachability of 501 error locations. [2021-11-07 01:12:10,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 2186 states, 1684 states have (on average 1.9667458432304037) internal successors, (3312), 2185 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:10,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:12:10,767 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:10,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:10,769 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:12:10,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:10,774 INFO L85 PathProgramCache]: Analyzing trace with hash 239437319, now seen corresponding path program 1 times [2021-11-07 01:12:10,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:10,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424467866] [2021-11-07 01:12:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:10,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:10,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:10,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:10,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:12:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:10,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:12:10,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:11,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:11,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:11,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424467866] [2021-11-07 01:12:11,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424467866] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:11,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:11,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:12:11,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118173345] [2021-11-07 01:12:11,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:12:11,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:11,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:12:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:12:11,144 INFO L87 Difference]: Start difference. First operand has 2186 states, 1684 states have (on average 1.9667458432304037) internal successors, (3312), 2185 states have internal predecessors, (3312), 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 01:12:11,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:11,260 INFO L93 Difference]: Finished difference Result 4370 states and 6622 transitions. [2021-11-07 01:12:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:12:11,261 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 01:12:11,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:11,307 INFO L225 Difference]: With dead ends: 4370 [2021-11-07 01:12:11,307 INFO L226 Difference]: Without dead ends: 2153 [2021-11-07 01:12:11,316 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 01:12:11,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-11-07 01:12:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2021-11-07 01:12:11,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 1652 states have (on average 1.6343825665859564) internal successors, (2700), 2152 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:11,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2700 transitions. [2021-11-07 01:12:11,486 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2700 transitions. Word has length 9 [2021-11-07 01:12:11,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:11,486 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 2700 transitions. [2021-11-07 01:12:11,487 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 01:12:11,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2700 transitions. [2021-11-07 01:12:11,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:12:11,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:11,491 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 01:12:11,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:11,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:11,719 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:12:11,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash 627540097, now seen corresponding path program 1 times [2021-11-07 01:12:11,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:11,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627053045] [2021-11-07 01:12:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:11,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:11,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:11,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:11,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:12:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:11,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:12:11,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:12,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:12,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:12,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627053045] [2021-11-07 01:12:12,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627053045] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:12,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:12,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:12:12,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167135210] [2021-11-07 01:12:12,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:12:12,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:12,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:12:12,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:12:12,355 INFO L87 Difference]: Start difference. First operand 2153 states and 2700 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 01:12:12,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:12,587 INFO L93 Difference]: Finished difference Result 4224 states and 5293 transitions. [2021-11-07 01:12:12,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:12:12,588 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 01:12:12,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:12,602 INFO L225 Difference]: With dead ends: 4224 [2021-11-07 01:12:12,602 INFO L226 Difference]: Without dead ends: 2162 [2021-11-07 01:12:12,606 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 01:12:12,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2021-11-07 01:12:12,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 2156. [2021-11-07 01:12:12,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1655 states have (on average 1.6283987915407856) internal successors, (2695), 2155 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:12,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2695 transitions. [2021-11-07 01:12:12,665 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2695 transitions. Word has length 44 [2021-11-07 01:12:12,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:12,665 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2695 transitions. [2021-11-07 01:12:12,665 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 01:12:12,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2695 transitions. [2021-11-07 01:12:12,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:12:12,668 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:12,668 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 01:12:12,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:12,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:12,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:12:12,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:12,883 INFO L85 PathProgramCache]: Analyzing trace with hash -317348363, now seen corresponding path program 1 times [2021-11-07 01:12:12,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:12,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860446798] [2021-11-07 01:12:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:12,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:12,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:12,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:12,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:12:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:13,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:12:13,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:13,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:14,112 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:14,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860446798] [2021-11-07 01:12:14,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860446798] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:14,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:14,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 01:12:14,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973467326] [2021-11-07 01:12:14,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:12:14,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:14,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:12:14,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:12:14,117 INFO L87 Difference]: Start difference. First operand 2156 states and 2695 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:14,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:14,406 INFO L93 Difference]: Finished difference Result 4220 states and 5270 transitions. [2021-11-07 01:12:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:12:14,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:12:14,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:14,420 INFO L225 Difference]: With dead ends: 4220 [2021-11-07 01:12:14,420 INFO L226 Difference]: Without dead ends: 2155 [2021-11-07 01:12:14,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:12:14,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2021-11-07 01:12:14,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2150. [2021-11-07 01:12:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1649 states have (on average 1.6282595512431777) internal successors, (2685), 2149 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 2685 transitions. [2021-11-07 01:12:14,479 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 2685 transitions. Word has length 44 [2021-11-07 01:12:14,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:14,480 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 2685 transitions. [2021-11-07 01:12:14,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:14,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 2685 transitions. [2021-11-07 01:12:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:12:14,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:14,488 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 01:12:14,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:14,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:14,701 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:12:14,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:14,702 INFO L85 PathProgramCache]: Analyzing trace with hash -575513801, now seen corresponding path program 1 times [2021-11-07 01:12:14,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:14,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047611536] [2021-11-07 01:12:14,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:14,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:14,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:14,704 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:14,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:12:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:15,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:12:15,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:15,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:12:15,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:12:15,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:12:15,212 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:12:15,213 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 01:12:15,301 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:12:15,301 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 01:12:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:15,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:15,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:15,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047611536] [2021-11-07 01:12:15,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047611536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:15,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:15,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:12:15,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317112546] [2021-11-07 01:12:15,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:12:15,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:15,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:12:15,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:12:15,642 INFO L87 Difference]: Start difference. First operand 2150 states and 2685 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 01:12:21,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:21,816 INFO L93 Difference]: Finished difference Result 8367 states and 10436 transitions. [2021-11-07 01:12:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:12:21,818 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 01:12:21,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:21,853 INFO L225 Difference]: With dead ends: 8367 [2021-11-07 01:12:21,854 INFO L226 Difference]: Without dead ends: 6307 [2021-11-07 01:12:21,859 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 01:12:21,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2021-11-07 01:12:21,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 2152. [2021-11-07 01:12:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 1651 states have (on average 1.6274984857662023) internal successors, (2687), 2151 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 2687 transitions. [2021-11-07 01:12:21,952 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 2687 transitions. Word has length 44 [2021-11-07 01:12:21,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:21,952 INFO L470 AbstractCegarLoop]: Abstraction has 2152 states and 2687 transitions. [2021-11-07 01:12:21,952 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 01:12:21,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 2687 transitions. [2021-11-07 01:12:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:12:21,956 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:21,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:21,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:22,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:22,173 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:12:22,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:22,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1988614245, now seen corresponding path program 1 times [2021-11-07 01:12:22,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:22,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32452717] [2021-11-07 01:12:22,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:22,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:22,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:22,180 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:22,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:12:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:22,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:12:22,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:22,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:23,202 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:23,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32452717] [2021-11-07 01:12:23,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32452717] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:23,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:23,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:12:23,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464590189] [2021-11-07 01:12:23,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:12:23,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:23,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:12:23,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:12:23,206 INFO L87 Difference]: Start difference. First operand 2152 states and 2687 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:23,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:23,430 INFO L93 Difference]: Finished difference Result 4309 states and 5382 transitions. [2021-11-07 01:12:23,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:12:23,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 01:12:23,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:23,442 INFO L225 Difference]: With dead ends: 4309 [2021-11-07 01:12:23,442 INFO L226 Difference]: Without dead ends: 2161 [2021-11-07 01:12:23,449 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 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 01:12:23,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2021-11-07 01:12:23,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2155. [2021-11-07 01:12:23,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1654 states have (on average 1.6215235792019347) internal successors, (2682), 2154 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:23,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2682 transitions. [2021-11-07 01:12:23,501 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2682 transitions. Word has length 96 [2021-11-07 01:12:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:23,504 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 2682 transitions. [2021-11-07 01:12:23,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2682 transitions. [2021-11-07 01:12:23,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:12:23,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:23,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:23,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:23,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:23,721 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:12:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:23,722 INFO L85 PathProgramCache]: Analyzing trace with hash -312724623, now seen corresponding path program 1 times [2021-11-07 01:12:23,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:23,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781190931] [2021-11-07 01:12:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:23,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:23,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:23,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:23,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:12:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:24,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:12:24,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:24,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:25,221 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:25,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781190931] [2021-11-07 01:12:25,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781190931] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:25,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:25,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:12:25,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642847025] [2021-11-07 01:12:25,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:12:25,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:25,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:12:25,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:12:25,223 INFO L87 Difference]: Start difference. First operand 2155 states and 2682 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:25,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:25,754 INFO L93 Difference]: Finished difference Result 6390 states and 7950 transitions. [2021-11-07 01:12:25,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:12:25,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 01:12:25,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:25,778 INFO L225 Difference]: With dead ends: 6390 [2021-11-07 01:12:25,778 INFO L226 Difference]: Without dead ends: 4239 [2021-11-07 01:12:25,782 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:12:25,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2021-11-07 01:12:25,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 3237. [2021-11-07 01:12:25,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 2736 states have (on average 1.7430555555555556) internal successors, (4769), 3236 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:25,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4769 transitions. [2021-11-07 01:12:25,880 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4769 transitions. Word has length 96 [2021-11-07 01:12:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:25,882 INFO L470 AbstractCegarLoop]: Abstraction has 3237 states and 4769 transitions. [2021-11-07 01:12:25,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4769 transitions. [2021-11-07 01:12:25,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 01:12:25,890 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:25,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:25,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:26,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:26,105 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:12:26,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:26,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1091132224, now seen corresponding path program 1 times [2021-11-07 01:12:26,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:26,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650544194] [2021-11-07 01:12:26,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:26,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:26,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:26,109 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:26,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:12:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:26,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:12:26,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:26,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:27,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:27,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650544194] [2021-11-07 01:12:27,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650544194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:27,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:27,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:12:27,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586710947] [2021-11-07 01:12:27,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:12:27,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:27,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:12:27,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:12:27,192 INFO L87 Difference]: Start difference. First operand 3237 states and 4769 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:27,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:27,298 INFO L93 Difference]: Finished difference Result 6432 states and 9495 transitions. [2021-11-07 01:12:27,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:12:27,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 103 [2021-11-07 01:12:27,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:27,319 INFO L225 Difference]: With dead ends: 6432 [2021-11-07 01:12:27,320 INFO L226 Difference]: Without dead ends: 3240 [2021-11-07 01:12:27,325 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:12:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2021-11-07 01:12:27,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 3240. [2021-11-07 01:12:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 2739 states have (on average 1.742241694048923) internal successors, (4772), 3239 states have internal predecessors, (4772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:27,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 4772 transitions. [2021-11-07 01:12:27,407 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 4772 transitions. Word has length 103 [2021-11-07 01:12:27,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:27,410 INFO L470 AbstractCegarLoop]: Abstraction has 3240 states and 4772 transitions. [2021-11-07 01:12:27,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:27,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 4772 transitions. [2021-11-07 01:12:27,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:12:27,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:27,412 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:27,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:27,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:27,631 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:12:27,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:27,631 INFO L85 PathProgramCache]: Analyzing trace with hash -785976308, now seen corresponding path program 1 times [2021-11-07 01:12:27,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:27,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480970453] [2021-11-07 01:12:27,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:27,633 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:27,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:27,638 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:27,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:12:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:28,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:12:28,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:12:28,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:12:29,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:29,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480970453] [2021-11-07 01:12:29,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480970453] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:29,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1530008995] [2021-11-07 01:12:29,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:29,082 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:29,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:12:29,093 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:12:29,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:12:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:29,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:12:29,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:12:30,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:12:30,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1530008995] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:30,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:12:30,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:12:30,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291479022] [2021-11-07 01:12:30,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:12:30,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:30,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:12:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:12:30,782 INFO L87 Difference]: Start difference. First operand 3240 states and 4772 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:34,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:34,245 INFO L93 Difference]: Finished difference Result 5394 states and 7453 transitions. [2021-11-07 01:12:34,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:12:34,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 106 [2021-11-07 01:12:34,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:34,259 INFO L225 Difference]: With dead ends: 5394 [2021-11-07 01:12:34,259 INFO L226 Difference]: Without dead ends: 2199 [2021-11-07 01:12:34,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:12:34,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-11-07 01:12:34,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2199. [2021-11-07 01:12:34,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 1698 states have (on average 1.6065959952885749) internal successors, (2728), 2198 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 2728 transitions. [2021-11-07 01:12:34,313 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 2728 transitions. Word has length 106 [2021-11-07 01:12:34,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:34,314 INFO L470 AbstractCegarLoop]: Abstraction has 2199 states and 2728 transitions. [2021-11-07 01:12:34,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:34,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 2728 transitions. [2021-11-07 01:12:34,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 01:12:34,316 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:34,316 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:34,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:34,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:34,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:34,720 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:12:34,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:34,721 INFO L85 PathProgramCache]: Analyzing trace with hash 530701390, now seen corresponding path program 1 times [2021-11-07 01:12:34,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:34,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550131735] [2021-11-07 01:12:34,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:34,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:34,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:34,724 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:34,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:12:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:35,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:12:35,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:12:35,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:12:36,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:36,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550131735] [2021-11-07 01:12:36,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550131735] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:36,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [293478456] [2021-11-07 01:12:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:36,389 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:36,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:12:36,390 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:12:36,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:12:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:37,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:12:37,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:12:37,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:12:38,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [293478456] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:38,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702028204] [2021-11-07 01:12:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:38,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:38,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:38,043 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:12:38,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 01:12:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:38,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:12:38,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:12:39,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:12:39,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702028204] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:39,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:12:39,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:12:39,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120796446] [2021-11-07 01:12:39,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:12:39,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:39,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:12:39,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:12:39,456 INFO L87 Difference]: Start difference. First operand 2199 states and 2728 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:39,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:39,841 INFO L93 Difference]: Finished difference Result 4356 states and 5417 transitions. [2021-11-07 01:12:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:12:39,842 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 113 [2021-11-07 01:12:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:39,855 INFO L225 Difference]: With dead ends: 4356 [2021-11-07 01:12:39,855 INFO L226 Difference]: Without dead ends: 2207 [2021-11-07 01:12:39,859 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 666 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 01:12:39,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-07 01:12:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2021-11-07 01:12:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1706 states have (on average 1.6037514654161782) internal successors, (2736), 2206 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2736 transitions. [2021-11-07 01:12:39,912 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2736 transitions. Word has length 113 [2021-11-07 01:12:39,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:39,913 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 2736 transitions. [2021-11-07 01:12:39,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:39,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2736 transitions. [2021-11-07 01:12:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 01:12:39,915 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:39,915 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:39,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:40,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:40,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:40,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:40,541 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:12:40,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:40,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1097119218, now seen corresponding path program 2 times [2021-11-07 01:12:40,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:40,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385822348] [2021-11-07 01:12:40,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:12:40,543 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:40,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:40,544 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:40,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:12:41,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:12:41,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:12:41,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:12:41,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:12:41,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:12:42,550 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:42,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385822348] [2021-11-07 01:12:42,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385822348] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:42,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [678222320] [2021-11-07 01:12:42,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:12:42,550 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:42,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:12:42,565 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:12:42,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:12:43,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:12:43,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:12:44,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:12:44,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:12:44,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:12:44,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [678222320] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:44,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962446947] [2021-11-07 01:12:44,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:12:44,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:44,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:44,749 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:12:44,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 01:12:45,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:12:45,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:12:45,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:12:45,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:12:46,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:12:47,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962446947] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:47,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:12:47,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 01:12:47,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123424340] [2021-11-07 01:12:47,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 01:12:47,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:47,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 01:12:47,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:12:47,285 INFO L87 Difference]: Start difference. First operand 2207 states and 2736 transitions. Second operand has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:51,887 INFO L93 Difference]: Finished difference Result 6523 states and 8120 transitions. [2021-11-07 01:12:51,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 01:12:51,888 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 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 121 [2021-11-07 01:12:51,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:51,898 INFO L225 Difference]: With dead ends: 6523 [2021-11-07 01:12:51,898 INFO L226 Difference]: Without dead ends: 4370 [2021-11-07 01:12:51,903 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 01:12:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2021-11-07 01:12:51,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 2229. [2021-11-07 01:12:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 1728 states have (on average 1.5966435185185186) internal successors, (2759), 2228 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:51,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 2759 transitions. [2021-11-07 01:12:51,976 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 2759 transitions. Word has length 121 [2021-11-07 01:12:51,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:51,977 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 2759 transitions. [2021-11-07 01:12:51,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:51,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 2759 transitions. [2021-11-07 01:12:51,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 01:12:51,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:51,979 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:51,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:52,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 01:12:52,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-07 01:12:52,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:52,587 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:12:52,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:52,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1558493810, now seen corresponding path program 3 times [2021-11-07 01:12:52,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:52,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342491149] [2021-11-07 01:12:52,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:12:52,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:52,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:52,589 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:52,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:12:58,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:12:58,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:12:58,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:12:58,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:12:59,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:13:01,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:01,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342491149] [2021-11-07 01:13:01,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342491149] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:13:01,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1701247171] [2021-11-07 01:13:01,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:13:01,357 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:13:01,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:13:01,358 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:13:01,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:13:53,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:13:53,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:13:53,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:13:53,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:13:53,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:13:54,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1701247171] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:13:54,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144515049] [2021-11-07 01:13:54,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:13:54,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:13:54,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:54,059 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:13:54,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3db7659-8798-4dc5-98e3-c8f906716d4a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process