./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/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_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:29:11,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:29:11,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:29:11,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:29:11,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:29:11,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:29:11,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:29:11,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:29:11,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:29:11,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:29:11,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:29:11,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:29:11,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:29:11,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:29:11,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:29:11,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:29:11,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:29:11,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:29:11,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:29:11,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:29:11,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:29:11,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:29:11,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:29:11,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:29:11,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:29:11,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:29:11,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:29:11,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:29:11,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:29:11,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:29:11,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:29:11,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:29:11,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:29:11,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:29:11,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:29:11,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:29:11,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:29:11,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:29:11,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:29:11,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:29:11,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:29:11,752 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:29:11,809 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:29:11,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:29:11,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:29:11,814 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:29:11,817 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:29:11,817 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:29:11,817 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:29:11,818 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:29:11,818 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:29:11,818 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:29:11,824 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:29:11,828 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:29:11,829 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:29:11,829 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:29:11,829 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:29:11,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:29:11,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:29:11,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:29:11,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:29:11,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:29:11,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:29:11,833 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:29:11,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:29:11,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:29:11,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:29:11,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:29:11,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:29:11,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:11,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:29:11,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:29:11,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:29:11,839 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:29:11,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:29:11,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:29:11,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:29:11,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:29:11,841 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_b4590625-2e93-4501-8368-5b77ee680eb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 [2021-11-07 01:29:12,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:29:12,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:29:12,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:29:12,204 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:29:12,205 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:29:12,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-07 01:29:12,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/data/2c33733a2/fdcb09d1fa164ca597dd2b62badc1ace/FLAG089e5c8a6 [2021-11-07 01:29:13,331 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:29:13,332 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-07 01:29:13,384 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/data/2c33733a2/fdcb09d1fa164ca597dd2b62badc1ace/FLAG089e5c8a6 [2021-11-07 01:29:13,745 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/data/2c33733a2/fdcb09d1fa164ca597dd2b62badc1ace [2021-11-07 01:29:13,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:29:13,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:29:13,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:13,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:29:13,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:29:13,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:13" (1/1) ... [2021-11-07 01:29:13,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a73609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:13, skipping insertion in model container [2021-11-07 01:29:13,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:13" (1/1) ... [2021-11-07 01:29:13,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:29:13,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:14,269 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_b4590625-2e93-4501-8368-5b77ee680eb3/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4493,4506] [2021-11-07 01:29:14,280 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_b4590625-2e93-4501-8368-5b77ee680eb3/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4553,4566] [2021-11-07 01:29:14,310 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:29:14,327 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:29:15,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:15,303 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:15,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:15,305 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:15,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:15,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:15,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:15,329 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:15,330 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:15,333 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:15,334 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:15,336 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:15,336 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:15,786 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:29:15,788 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:29:15,790 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:29:15,791 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:29:15,794 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:29:15,795 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:29:15,796 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:29:15,797 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:29:15,798 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:29:15,799 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:29:15,992 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:29:16,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:16,049 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 01:29:16,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@693e1413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:16, skipping insertion in model container [2021-11-07 01:29:16,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:16,051 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:29:16,054 INFO L168 Benchmark]: Toolchain (without parser) took 2302.02 ms. Allocated memory was 92.3 MB in the beginning and 130.0 MB in the end (delta: 37.7 MB). Free memory was 50.3 MB in the beginning and 72.9 MB in the end (delta: -22.6 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:16,055 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory was 64.9 MB in the beginning and 64.9 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:29:16,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2298.70 ms. Allocated memory was 92.3 MB in the beginning and 130.0 MB in the end (delta: 37.7 MB). Free memory was 50.0 MB in the beginning and 72.9 MB in the end (delta: -22.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:16,059 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory was 64.9 MB in the beginning and 64.9 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2298.70 ms. Allocated memory was 92.3 MB in the beginning and 130.0 MB in the end (delta: 37.7 MB). Free memory was 50.0 MB in the beginning and 72.9 MB in the end (delta: -22.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7037]: 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_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/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_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:29:18,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:29:18,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:29:18,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:29:18,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:29:18,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:29:18,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:29:18,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:29:18,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:29:18,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:29:18,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:29:18,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:29:18,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:29:18,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:29:18,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:29:18,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:29:18,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:29:18,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:29:18,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:29:18,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:29:18,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:29:18,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:29:18,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:29:18,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:29:18,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:29:18,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:29:18,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:29:18,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:29:18,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:29:18,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:29:18,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:29:18,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:29:18,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:29:18,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:29:18,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:29:18,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:29:18,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:29:18,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:29:18,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:29:18,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:29:18,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:29:18,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:29:19,041 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:29:19,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:29:19,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:29:19,043 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:29:19,044 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:29:19,044 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:29:19,044 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:29:19,045 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:29:19,045 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:29:19,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:29:19,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:29:19,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:29:19,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:29:19,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:29:19,049 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:29:19,050 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:29:19,050 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:29:19,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:29:19,050 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:29:19,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:29:19,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:29:19,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:29:19,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:29:19,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:19,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:29:19,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:29:19,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:29:19,053 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:29:19,053 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:19,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:29:19,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:29:19,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:29:19,054 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_b4590625-2e93-4501-8368-5b77ee680eb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 [2021-11-07 01:29:19,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:29:19,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:29:19,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:29:19,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:29:19,552 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:29:19,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-07 01:29:19,639 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/data/2d75b1b81/6b267a5c31394f2dab9973263cb6b9e9/FLAG39aa5fa35 [2021-11-07 01:29:20,739 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:29:20,739 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-07 01:29:20,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/data/2d75b1b81/6b267a5c31394f2dab9973263cb6b9e9/FLAG39aa5fa35 [2021-11-07 01:29:21,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/data/2d75b1b81/6b267a5c31394f2dab9973263cb6b9e9 [2021-11-07 01:29:21,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:29:21,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:29:21,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:21,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:29:21,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:29:21,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:21" (1/1) ... [2021-11-07 01:29:21,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19754754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:21, skipping insertion in model container [2021-11-07 01:29:21,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:21" (1/1) ... [2021-11-07 01:29:21,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:29:21,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:21,682 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_b4590625-2e93-4501-8368-5b77ee680eb3/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4493,4506] [2021-11-07 01:29:21,689 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_b4590625-2e93-4501-8368-5b77ee680eb3/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4553,4566] [2021-11-07 01:29:21,720 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:29:21,736 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:29:22,886 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:22,887 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:22,887 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:22,888 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:22,890 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:22,926 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:22,927 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:22,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:22,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:22,937 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:22,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:22,944 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:22,944 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,411 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:29:23,412 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:29:23,414 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:29:23,416 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:29:23,418 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:29:23,419 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:29:23,420 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:29:23,421 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:29:23,422 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:29:23,423 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:29:23,644 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:29:23,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:23,709 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:29:23,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:23,767 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_b4590625-2e93-4501-8368-5b77ee680eb3/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4493,4506] [2021-11-07 01:29:23,768 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_b4590625-2e93-4501-8368-5b77ee680eb3/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4553,4566] [2021-11-07 01:29:23,770 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:29:23,771 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:29:23,838 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,838 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,839 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,841 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,858 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,860 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,862 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,863 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,865 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,867 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,868 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,868 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:23,977 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:29:23,982 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:29:23,983 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:29:23,984 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:29:23,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:29:23,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:29:23,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:29:23,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:29:23,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:29:23,989 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:29:24,031 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:29:24,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:24,077 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:29:24,106 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_b4590625-2e93-4501-8368-5b77ee680eb3/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4493,4506] [2021-11-07 01:29:24,115 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_b4590625-2e93-4501-8368-5b77ee680eb3/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4553,4566] [2021-11-07 01:29:24,117 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:29:24,117 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:29:24,174 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:24,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:24,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:24,176 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:24,177 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:24,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:24,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:24,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:24,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:24,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:24,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:24,196 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:24,197 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:24,247 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:29:24,247 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:29:24,250 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:29:24,251 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:29:24,252 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:29:24,253 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:29:24,253 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:29:24,254 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:29:24,255 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:29:24,256 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:29:24,304 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:29:24,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:24,703 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:29:24,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:24 WrapperNode [2021-11-07 01:29:24,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:24,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:24,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:29:24,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:29:24,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:24" (1/1) ... [2021-11-07 01:29:24,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:24" (1/1) ... [2021-11-07 01:29:24,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:24,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:29:24,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:29:24,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:29:24,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:24" (1/1) ... [2021-11-07 01:29:24,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:24" (1/1) ... [2021-11-07 01:29:24,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:24" (1/1) ... [2021-11-07 01:29:24,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:24" (1/1) ... [2021-11-07 01:29:24,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:24" (1/1) ... [2021-11-07 01:29:24,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:24" (1/1) ... [2021-11-07 01:29:24,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:24" (1/1) ... [2021-11-07 01:29:24,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:29:24,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:29:24,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:29:24,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:29:24,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:24" (1/1) ... [2021-11-07 01:29:24,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:24,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:29:25,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:29:25,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:29:25,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:29:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:29:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:29:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:29:25,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:29:25,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:29:25,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:29:25,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:29:25,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:29:26,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:29:26,292 INFO L299 CfgBuilder]: Removed 55 assume(true) statements. [2021-11-07 01:29:26,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:29:26 BoogieIcfgContainer [2021-11-07 01:29:26,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:29:26,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:29:26,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:29:26,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:29:26,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:29:21" (1/3) ... [2021-11-07 01:29:26,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1323e73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:29:26, skipping insertion in model container [2021-11-07 01:29:26,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:24" (2/3) ... [2021-11-07 01:29:26,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1323e73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:29:26, skipping insertion in model container [2021-11-07 01:29:26,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:29:26" (3/3) ... [2021-11-07 01:29:26,311 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_end_harness.i [2021-11-07 01:29:26,320 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:29:26,320 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 01:29:26,398 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:29:26,410 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 01:29:26,410 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 01:29:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:26,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:29:26,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:26,436 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] [2021-11-07 01:29:26,437 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:29:26,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:26,443 INFO L85 PathProgramCache]: Analyzing trace with hash -122732205, now seen corresponding path program 1 times [2021-11-07 01:29:26,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:26,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313941874] [2021-11-07 01:29:26,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:26,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:26,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:26,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:26,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:29:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:26,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:29:26,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:26,980 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 01:29:26,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:27,125 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 01:29:27,126 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:27,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313941874] [2021-11-07 01:29:27,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313941874] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:27,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:27,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:29:27,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349827896] [2021-11-07 01:29:27,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:29:27,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:29:27,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:29:27,157 INFO L87 Difference]: Start difference. First operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 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 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:27,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:27,205 INFO L93 Difference]: Finished difference Result 224 states and 335 transitions. [2021-11-07 01:29:27,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:29:27,207 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 41 [2021-11-07 01:29:27,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:27,219 INFO L225 Difference]: With dead ends: 224 [2021-11-07 01:29:27,219 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 01:29:27,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 80 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 01:29:27,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 01:29:27,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-07 01:29:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.457142857142857) internal successors, (153), 108 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2021-11-07 01:29:27,272 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 41 [2021-11-07 01:29:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:27,272 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2021-11-07 01:29:27,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:27,273 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2021-11-07 01:29:27,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:29:27,275 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:27,276 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] [2021-11-07 01:29:27,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:27,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:27,495 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:29:27,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1738897517, now seen corresponding path program 1 times [2021-11-07 01:29:27,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:27,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108045668] [2021-11-07 01:29:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:27,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:27,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:27,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:27,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:29:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:27,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:29:27,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:27,976 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 01:29:27,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:28,132 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 01:29:28,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:28,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108045668] [2021-11-07 01:29:28,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108045668] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:28,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:28,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:29:28,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477909453] [2021-11-07 01:29:28,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:29:28,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:29:28,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:29:28,142 INFO L87 Difference]: Start difference. First operand 109 states and 153 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:28,274 INFO L93 Difference]: Finished difference Result 208 states and 294 transitions. [2021-11-07 01:29:28,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:29:28,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2021-11-07 01:29:28,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:28,281 INFO L225 Difference]: With dead ends: 208 [2021-11-07 01:29:28,281 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 01:29:28,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:29:28,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 01:29:28,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-07 01:29:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 108 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:28,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 150 transitions. [2021-11-07 01:29:28,308 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 150 transitions. Word has length 41 [2021-11-07 01:29:28,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:28,308 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 150 transitions. [2021-11-07 01:29:28,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:28,309 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 150 transitions. [2021-11-07 01:29:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:29:28,314 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:28,314 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] [2021-11-07 01:29:28,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:29:28,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:28,521 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:29:28,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:28,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510959, now seen corresponding path program 1 times [2021-11-07 01:29:28,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:28,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384791328] [2021-11-07 01:29:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:28,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:28,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:28,525 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:28,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:29:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:28,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:29:28,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:28,955 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 01:29:28,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:29,064 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 01:29:29,065 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:29,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384791328] [2021-11-07 01:29:29,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384791328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:29,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:29,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:29:29,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782686733] [2021-11-07 01:29:29,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:29:29,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:29,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:29:29,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:29:29,074 INFO L87 Difference]: Start difference. First operand 109 states and 150 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:29,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:29,168 INFO L93 Difference]: Finished difference Result 210 states and 280 transitions. [2021-11-07 01:29:29,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:29:29,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2021-11-07 01:29:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:29,171 INFO L225 Difference]: With dead ends: 210 [2021-11-07 01:29:29,175 INFO L226 Difference]: Without dead ends: 127 [2021-11-07 01:29:29,176 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:29:29,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-07 01:29:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2021-11-07 01:29:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 108 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2021-11-07 01:29:29,188 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 41 [2021-11-07 01:29:29,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:29,189 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2021-11-07 01:29:29,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:29,190 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2021-11-07 01:29:29,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:29:29,191 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:29,191 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:29,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:29,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:29,408 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:29:29,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:29,409 INFO L85 PathProgramCache]: Analyzing trace with hash -423042159, now seen corresponding path program 1 times [2021-11-07 01:29:29,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:29,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425585328] [2021-11-07 01:29:29,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:29,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:29,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:29,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:29,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:29:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:29,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:29:29,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:29,912 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 01:29:29,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:30,081 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 01:29:30,081 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:30,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425585328] [2021-11-07 01:29:30,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425585328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:30,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:30,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:29:30,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658125862] [2021-11-07 01:29:30,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:29:30,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:30,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:29:30,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:29:30,084 INFO L87 Difference]: Start difference. First operand 109 states and 148 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:30,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:30,338 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2021-11-07 01:29:30,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:29:30,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 45 [2021-11-07 01:29:30,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:30,340 INFO L225 Difference]: With dead ends: 217 [2021-11-07 01:29:30,340 INFO L226 Difference]: Without dead ends: 135 [2021-11-07 01:29:30,341 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:29:30,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-07 01:29:30,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2021-11-07 01:29:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.380952380952381) internal successors, (145), 108 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:30,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 145 transitions. [2021-11-07 01:29:30,350 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 145 transitions. Word has length 45 [2021-11-07 01:29:30,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:30,350 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 145 transitions. [2021-11-07 01:29:30,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:30,351 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 145 transitions. [2021-11-07 01:29:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:29:30,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:30,352 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:30,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:30,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:30,552 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:29:30,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2072078671, now seen corresponding path program 1 times [2021-11-07 01:29:30,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:30,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275095310] [2021-11-07 01:29:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:30,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:30,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:30,556 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:30,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:29:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:30,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:29:30,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:31,108 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 01:29:31,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:31,297 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 01:29:31,297 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:31,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275095310] [2021-11-07 01:29:31,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275095310] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:31,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:31,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-07 01:29:31,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408528934] [2021-11-07 01:29:31,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:29:31,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:31,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:29:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:29:31,300 INFO L87 Difference]: Start difference. First operand 109 states and 145 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:31,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:31,789 INFO L93 Difference]: Finished difference Result 296 states and 388 transitions. [2021-11-07 01:29:31,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:29:31,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 49 [2021-11-07 01:29:31,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:31,792 INFO L225 Difference]: With dead ends: 296 [2021-11-07 01:29:31,792 INFO L226 Difference]: Without dead ends: 213 [2021-11-07 01:29:31,793 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:29:31,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-07 01:29:31,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 112. [2021-11-07 01:29:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 111 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:31,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2021-11-07 01:29:31,806 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 49 [2021-11-07 01:29:31,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:31,807 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2021-11-07 01:29:31,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:31,807 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2021-11-07 01:29:31,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:29:31,809 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:31,809 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:31,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:32,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:32,030 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:29:32,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:32,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1006498608, now seen corresponding path program 1 times [2021-11-07 01:29:32,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:32,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535369216] [2021-11-07 01:29:32,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:32,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:32,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:32,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:32,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:29:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:32,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:29:32,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:32,688 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 01:29:32,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:32,885 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 01:29:32,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:32,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535369216] [2021-11-07 01:29:32,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535369216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:32,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:32,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 3] imperfect sequences [] total 7 [2021-11-07 01:29:32,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118872162] [2021-11-07 01:29:32,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:29:32,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:32,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:29:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:29:32,887 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:33,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:33,487 INFO L93 Difference]: Finished difference Result 335 states and 432 transitions. [2021-11-07 01:29:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:29:33,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:29:33,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:33,491 INFO L225 Difference]: With dead ends: 335 [2021-11-07 01:29:33,491 INFO L226 Difference]: Without dead ends: 250 [2021-11-07 01:29:33,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:29:33,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-07 01:29:33,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 117. [2021-11-07 01:29:33,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 116 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 154 transitions. [2021-11-07 01:29:33,507 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 154 transitions. Word has length 51 [2021-11-07 01:29:33,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:33,507 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 154 transitions. [2021-11-07 01:29:33,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:33,508 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 154 transitions. [2021-11-07 01:29:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 01:29:33,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:33,510 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:33,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:33,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:33,730 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:29:33,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:33,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1179077135, now seen corresponding path program 1 times [2021-11-07 01:29:33,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:33,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88788774] [2021-11-07 01:29:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:33,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:33,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:33,733 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:33,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:29:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:34,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:29:34,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:34,451 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 01:29:34,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:34,677 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 01:29:34,677 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:34,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88788774] [2021-11-07 01:29:34,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88788774] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:34,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:34,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 01:29:34,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702235931] [2021-11-07 01:29:34,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:29:34,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:34,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:29:34,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:29:34,680 INFO L87 Difference]: Start difference. First operand 117 states and 154 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:35,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:35,232 INFO L93 Difference]: Finished difference Result 312 states and 405 transitions. [2021-11-07 01:29:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:29:35,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-11-07 01:29:35,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:35,234 INFO L225 Difference]: With dead ends: 312 [2021-11-07 01:29:35,234 INFO L226 Difference]: Without dead ends: 215 [2021-11-07 01:29:35,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:29:35,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-07 01:29:35,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 120. [2021-11-07 01:29:35,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.353448275862069) internal successors, (157), 119 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-11-07 01:29:35,247 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 61 [2021-11-07 01:29:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:35,247 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-11-07 01:29:35,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-11-07 01:29:35,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 01:29:35,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:35,249 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:35,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:35,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:35,464 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:29:35,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:35,465 INFO L85 PathProgramCache]: Analyzing trace with hash 930930641, now seen corresponding path program 1 times [2021-11-07 01:29:35,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:35,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556763909] [2021-11-07 01:29:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:35,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:35,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:35,466 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:35,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:29:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:35,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:29:35,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:36,070 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 01:29:36,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:36,245 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 01:29:36,246 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:36,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556763909] [2021-11-07 01:29:36,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556763909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:36,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:36,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:29:36,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854705066] [2021-11-07 01:29:36,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:29:36,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:36,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:29:36,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:29:36,248 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:36,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:36,407 INFO L93 Difference]: Finished difference Result 259 states and 326 transitions. [2021-11-07 01:29:36,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:29:36,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 61 [2021-11-07 01:29:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:36,409 INFO L225 Difference]: With dead ends: 259 [2021-11-07 01:29:36,409 INFO L226 Difference]: Without dead ends: 166 [2021-11-07 01:29:36,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:29:36,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-07 01:29:36,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2021-11-07 01:29:36,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.3362068965517242) internal successors, (155), 119 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:36,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2021-11-07 01:29:36,421 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 155 transitions. Word has length 61 [2021-11-07 01:29:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:36,422 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 155 transitions. [2021-11-07 01:29:36,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 155 transitions. [2021-11-07 01:29:36,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:29:36,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:36,427 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:36,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:36,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:36,628 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:29:36,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:36,629 INFO L85 PathProgramCache]: Analyzing trace with hash -961072015, now seen corresponding path program 1 times [2021-11-07 01:29:36,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:36,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600042114] [2021-11-07 01:29:36,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:36,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:36,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:36,632 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:36,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:29:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:37,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 01:29:37,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:37,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-07 01:29:37,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-07 01:29:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:29:37,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:29:38,045 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:38,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600042114] [2021-11-07 01:29:38,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600042114] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:29:38,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1892368806] [2021-11-07 01:29:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:38,046 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:38,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:29:38,052 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:29:38,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:29:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:38,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:29:38,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:29:38,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:29:38,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1892368806] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:38,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:29:38,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [8, 8] total 14 [2021-11-07 01:29:38,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865212309] [2021-11-07 01:29:38,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:29:38,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:38,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:29:38,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:29:38,965 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:39,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:39,216 INFO L93 Difference]: Finished difference Result 290 states and 357 transitions. [2021-11-07 01:29:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:29:39,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2021-11-07 01:29:39,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:39,219 INFO L225 Difference]: With dead ends: 290 [2021-11-07 01:29:39,219 INFO L226 Difference]: Without dead ends: 195 [2021-11-07 01:29:39,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:29:39,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-07 01:29:39,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 120. [2021-11-07 01:29:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.3189655172413792) internal successors, (153), 119 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 153 transitions. [2021-11-07 01:29:39,231 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 153 transitions. Word has length 65 [2021-11-07 01:29:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:39,231 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 153 transitions. [2021-11-07 01:29:39,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:39,232 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 153 transitions. [2021-11-07 01:29:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:29:39,233 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:39,233 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] [2021-11-07 01:29:39,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:39,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:39,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:39,645 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:29:39,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:39,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1164925684, now seen corresponding path program 1 times [2021-11-07 01:29:39,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:39,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748211187] [2021-11-07 01:29:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:39,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:39,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:39,647 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:39,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:29:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:40,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 01:29:40,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:41,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:29:41,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:44,460 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:29:44,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-07 01:29:44,495 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-07 01:29:44,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-07 01:29:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:29:44,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:44,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748211187] [2021-11-07 01:29:44,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748211187] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:44,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:44,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-07 01:29:44,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442435559] [2021-11-07 01:29:44,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 01:29:44,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:44,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 01:29:44,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:29:44,785 INFO L87 Difference]: Start difference. First operand 120 states and 153 transitions. Second operand has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:46,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:46,254 INFO L93 Difference]: Finished difference Result 164 states and 207 transitions. [2021-11-07 01:29:46,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:29:46,255 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 01:29:46,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:46,257 INFO L225 Difference]: With dead ends: 164 [2021-11-07 01:29:46,257 INFO L226 Difference]: Without dead ends: 124 [2021-11-07 01:29:46,258 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:29:46,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-07 01:29:46,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-11-07 01:29:46,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.3135593220338984) internal successors, (155), 121 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:46,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 155 transitions. [2021-11-07 01:29:46,271 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 155 transitions. Word has length 67 [2021-11-07 01:29:46,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:46,271 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 155 transitions. [2021-11-07 01:29:46,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 155 transitions. [2021-11-07 01:29:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:29:46,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:46,276 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] [2021-11-07 01:29:46,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:46,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:46,496 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:29:46,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:46,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1166772726, now seen corresponding path program 1 times [2021-11-07 01:29:46,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:46,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131705293] [2021-11-07 01:29:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:46,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:46,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:46,499 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:46,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:29:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:47,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 01:29:47,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:47,480 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 01:29:47,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2021-11-07 01:29:48,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-11-07 01:29:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:29:48,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:49,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 90 [2021-11-07 01:29:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:29:49,514 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:49,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131705293] [2021-11-07 01:29:49,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131705293] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:49,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:49,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-07 01:29:49,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303369354] [2021-11-07 01:29:49,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 01:29:49,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:49,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 01:29:49,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:29:49,518 INFO L87 Difference]: Start difference. First operand 122 states and 155 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:52,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:52,364 INFO L93 Difference]: Finished difference Result 368 states and 471 transitions. [2021-11-07 01:29:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:29:52,365 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 01:29:52,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:52,368 INFO L225 Difference]: With dead ends: 368 [2021-11-07 01:29:52,368 INFO L226 Difference]: Without dead ends: 262 [2021-11-07 01:29:52,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:29:52,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-07 01:29:52,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 130. [2021-11-07 01:29:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 126 states have (on average 1.2936507936507937) internal successors, (163), 129 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 163 transitions. [2021-11-07 01:29:52,384 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 163 transitions. Word has length 67 [2021-11-07 01:29:52,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:52,385 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 163 transitions. [2021-11-07 01:29:52,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:52,385 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 163 transitions. [2021-11-07 01:29:52,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:29:52,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:52,386 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] [2021-11-07 01:29:52,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:52,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:52,608 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:29:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:52,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1353187208, now seen corresponding path program 1 times [2021-11-07 01:29:52,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:52,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844346389] [2021-11-07 01:29:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:52,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:52,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:52,610 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:52,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:29:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:53,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 01:29:53,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:29:54,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:57,830 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:29:57,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-07 01:29:57,855 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-07 01:29:57,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-07 01:29:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:29:57,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:57,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844346389] [2021-11-07 01:29:57,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844346389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:57,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:57,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 17 [2021-11-07 01:29:57,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266978110] [2021-11-07 01:29:57,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 01:29:57,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:57,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 01:29:57,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:29:57,961 INFO L87 Difference]: Start difference. First operand 130 states and 163 transitions. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 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 01:30:01,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:01,259 INFO L93 Difference]: Finished difference Result 461 states and 584 transitions. [2021-11-07 01:30:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 01:30:01,261 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 01:30:01,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:01,264 INFO L225 Difference]: With dead ends: 461 [2021-11-07 01:30:01,264 INFO L226 Difference]: Without dead ends: 374 [2021-11-07 01:30:01,265 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 01:30:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-07 01:30:01,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 239. [2021-11-07 01:30:01,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 235 states have (on average 1.2893617021276595) internal successors, (303), 238 states have internal predecessors, (303), 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 01:30:01,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 303 transitions. [2021-11-07 01:30:01,297 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 303 transitions. Word has length 67 [2021-11-07 01:30:01,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:01,297 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 303 transitions. [2021-11-07 01:30:01,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 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 01:30:01,298 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 303 transitions. [2021-11-07 01:30:01,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:30:01,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:01,299 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] [2021-11-07 01:30:01,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:01,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:01,512 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:30:01,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:01,513 INFO L85 PathProgramCache]: Analyzing trace with hash -673128838, now seen corresponding path program 1 times [2021-11-07 01:30:01,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:01,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792675307] [2021-11-07 01:30:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:01,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:01,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:01,515 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:01,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:30:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:02,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 01:30:02,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:03,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-11-07 01:30:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:30:03,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:03,746 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:30:03,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 20 [2021-11-07 01:30:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:30:04,086 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:04,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792675307] [2021-11-07 01:30:04,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792675307] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:30:04,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [813893269] [2021-11-07 01:30:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:04,086 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:04,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:30:04,088 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:30:04,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 01:30:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:05,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 01:30:05,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:05,530 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-07 01:30:05,531 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 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-07 01:30:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:30:14,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:16,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 169 [2021-11-07 01:30:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:30:16,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [813893269] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:30:16,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502060247] [2021-11-07 01:30:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:16,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:30:16,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:30:16,324 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:30:16,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4590625-2e93-4501-8368-5b77ee680eb3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 01:30:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:17,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 01:30:17,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:17,676 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 01:30:17,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2021-11-07 01:30:36,198 INFO L354 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2021-11-07 01:30:36,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 45 [2021-11-07 01:30:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:30:36,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:37,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 349 treesize of output 333 [2021-11-07 01:30:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:30:37,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502060247] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:30:37,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:30:37,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13, 13, 13, 13] total 48 [2021-11-07 01:30:37,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525364927] [2021-11-07 01:30:37,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-07 01:30:37,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:37,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-07 01:30:37,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2056, Unknown=4, NotChecked=0, Total=2256 [2021-11-07 01:30:37,904 INFO L87 Difference]: Start difference. First operand 239 states and 303 transitions. Second operand has 48 states, 48 states have (on average 6.041666666666667) internal successors, (290), 48 states have internal predecessors, (290), 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 01:31:13,758 WARN L207 SmtUtils]: Spent 6.44 s on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-11-07 01:31:37,612 WARN L207 SmtUtils]: Spent 16.91 s on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2021-11-07 01:32:39,786 WARN L207 SmtUtils]: Spent 19.03 s on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2021-11-07 01:32:54,780 WARN L207 SmtUtils]: Spent 14.11 s on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2021-11-07 01:33:03,295 WARN L207 SmtUtils]: Spent 8.27 s on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-11-07 01:33:12,275 WARN L207 SmtUtils]: Spent 8.28 s on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-11-07 01:33:47,310 WARN L207 SmtUtils]: Spent 33.48 s on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2021-11-07 01:34:11,473 WARN L207 SmtUtils]: Spent 16.86 s on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2021-11-07 01:34:22,365 WARN L207 SmtUtils]: Spent 8.23 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-11-07 01:34:31,251 WARN L207 SmtUtils]: Spent 8.32 s on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2021-11-07 01:34:59,329 WARN L207 SmtUtils]: Spent 24.21 s on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2021-11-07 01:35:08,315 WARN L207 SmtUtils]: Spent 8.26 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-11-07 01:35:17,136 WARN L207 SmtUtils]: Spent 8.35 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-11-07 01:35:49,192 WARN L207 SmtUtils]: Spent 31.38 s on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2021-11-07 01:36:21,018 WARN L207 SmtUtils]: Spent 29.33 s on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2021-11-07 01:36:41,642 WARN L207 SmtUtils]: Spent 20.14 s on a formula simplification that was a NOOP. DAG size: 91 [2021-11-07 01:36:50,144 WARN L207 SmtUtils]: Spent 6.17 s on a formula simplification that was a NOOP. DAG size: 54 [2021-11-07 01:36:57,344 WARN L207 SmtUtils]: Spent 6.18 s on a formula simplification that was a NOOP. DAG size: 55 [2021-11-07 01:37:20,711 WARN L207 SmtUtils]: Spent 15.84 s on a formula simplification that was a NOOP. DAG size: 73 [2021-11-07 01:37:28,519 WARN L207 SmtUtils]: Spent 5.51 s on a formula simplification that was a NOOP. DAG size: 49 [2021-11-07 01:37:45,336 WARN L207 SmtUtils]: Spent 14.50 s on a formula simplification that was a NOOP. DAG size: 89 [2021-11-07 01:38:17,099 WARN L207 SmtUtils]: Spent 16.52 s on a formula simplification that was a NOOP. DAG size: 78 [2021-11-07 01:38:27,572 WARN L207 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 45 [2021-11-07 01:38:40,110 WARN L207 SmtUtils]: Spent 6.13 s on a formula simplification that was a NOOP. DAG size: 53 [2021-11-07 01:38:55,038 WARN L207 SmtUtils]: Spent 6.13 s on a formula simplification that was a NOOP. DAG size: 57 [2021-11-07 01:39:26,504 WARN L207 SmtUtils]: Spent 7.64 s on a formula simplification that was a NOOP. DAG size: 38 [2021-11-07 01:39:48,017 WARN L207 SmtUtils]: Spent 15.83 s on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2021-11-07 01:40:11,451 WARN L207 SmtUtils]: Spent 22.34 s on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2021-11-07 01:40:22,847 WARN L207 SmtUtils]: Spent 10.89 s on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2021-11-07 01:40:55,402 WARN L207 SmtUtils]: Spent 18.48 s on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2021-11-07 01:41:04,076 WARN L207 SmtUtils]: Spent 8.23 s on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-11-07 01:41:13,413 WARN L207 SmtUtils]: Spent 8.23 s on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2021-11-07 01:41:25,804 WARN L207 SmtUtils]: Spent 11.67 s on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-11-07 01:41:46,937 WARN L207 SmtUtils]: Spent 18.60 s on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2021-11-07 01:42:07,215 WARN L207 SmtUtils]: Spent 20.04 s on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2021-11-07 01:42:29,026 WARN L207 SmtUtils]: Spent 15.31 s on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2021-11-07 01:42:40,086 WARN L207 SmtUtils]: Spent 10.59 s on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2021-11-07 01:42:51,413 WARN L207 SmtUtils]: Spent 11.17 s on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2021-11-07 01:43:12,737 WARN L207 SmtUtils]: Spent 18.84 s on a formula simplification. DAG size of input: 80 DAG size of output: 58