./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_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_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/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_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/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_61a62de4-32f9-4179-a558-4526eae4507a/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 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:34:32,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:34:32,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:34:32,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:34:32,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:34:32,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:34:32,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:34:32,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:34:32,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:34:32,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:34:32,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:34:32,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:34:32,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:34:32,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:34:32,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:34:32,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:34:32,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:34:32,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:34:32,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:34:32,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:34:32,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:34:32,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:34:32,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:34:32,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:34:32,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:34:32,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:34:32,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:34:32,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:34:32,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:34:32,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:34:32,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:34:32,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:34:32,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:34:32,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:34:32,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:34:32,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:34:32,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:34:32,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:34:32,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:34:32,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:34:32,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:34:32,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:34:32,237 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:34:32,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:34:32,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:34:32,239 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:34:32,239 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:34:32,239 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:34:32,239 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:34:32,240 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:34:32,240 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:34:32,240 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:34:32,240 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:34:32,241 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:34:32,241 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:34:32,241 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:34:32,242 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:34:32,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:34:32,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:34:32,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:34:32,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:34:32,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:34:32,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:34:32,250 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:34:32,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:34:32,251 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:34:32,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:34:32,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:34:32,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:34:32,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:34:32,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:34:32,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:34:32,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:34:32,254 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:34:32,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:34:32,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:34:32,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:34:32,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:34:32,256 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_61a62de4-32f9-4179-a558-4526eae4507a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 [2021-11-07 01:34:32,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:34:32,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:34:32,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:34:32,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:34:32,621 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:34:32,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2021-11-07 01:34:32,721 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/data/46ee8c310/704906d3b54c4113ab54afa3305c4e87/FLAG83db10bf9 [2021-11-07 01:34:33,780 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:34:33,781 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2021-11-07 01:34:33,839 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/data/46ee8c310/704906d3b54c4113ab54afa3305c4e87/FLAG83db10bf9 [2021-11-07 01:34:34,140 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/data/46ee8c310/704906d3b54c4113ab54afa3305c4e87 [2021-11-07 01:34:34,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:34:34,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:34:34,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:34,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:34:34,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:34:34,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:34" (1/1) ... [2021-11-07 01:34:34,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bda5271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:34, skipping insertion in model container [2021-11-07 01:34:34,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:34" (1/1) ... [2021-11-07 01:34:34,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:34:34,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:34:34,663 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_61a62de4-32f9-4179-a558-4526eae4507a/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2021-11-07 01:34:34,670 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_61a62de4-32f9-4179-a558-4526eae4507a/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2021-11-07 01:34:34,694 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:34:34,700 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:34:35,737 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:34:35,823 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:35,824 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:35,825 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:35,826 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:35,828 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:35,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:35,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:35,847 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:35,848 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:36,351 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:34:36,352 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:34:36,354 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:34:36,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:34:36,357 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:34:36,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:34:36,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:34:36,360 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:34:36,361 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:34:36,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:34:36,556 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:36,556 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:36,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:36,705 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 01:34:36,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f2774b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:36, skipping insertion in model container [2021-11-07 01:34:36,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:36,707 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:34:36,709 INFO L168 Benchmark]: Toolchain (without parser) took 2563.16 ms. Allocated memory is still 146.8 MB. Free memory was 104.3 MB in the beginning and 84.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:34:36,710 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 83.9 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:34:36,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2553.71 ms. Allocated memory is still 146.8 MB. Free memory was 104.3 MB in the beginning and 84.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:34:36,713 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 83.9 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2553.71 ms. Allocated memory is still 146.8 MB. Free memory was 104.3 MB in the beginning and 84.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2886]: 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_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/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_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/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_61a62de4-32f9-4179-a558-4526eae4507a/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 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:34:39,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:34:39,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:34:39,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:34:39,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:34:39,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:34:39,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:34:39,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:34:39,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:34:39,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:34:39,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:34:39,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:34:39,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:34:39,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:34:39,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:34:39,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:34:39,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:34:39,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:34:39,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:34:39,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:34:39,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:34:39,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:34:39,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:34:39,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:34:39,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:34:39,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:34:39,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:34:39,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:34:39,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:34:39,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:34:39,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:34:39,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:34:39,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:34:39,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:34:39,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:34:39,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:34:39,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:34:39,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:34:39,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:34:39,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:34:39,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:34:39,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:34:39,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:34:39,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:34:39,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:34:39,668 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:34:39,668 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:34:39,669 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:34:39,669 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:34:39,669 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:34:39,669 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:34:39,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:34:39,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:34:39,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:34:39,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:34:39,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:34:39,673 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:34:39,673 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:34:39,674 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:34:39,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:34:39,674 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:34:39,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:34:39,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:34:39,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:34:39,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:34:39,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:34:39,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:34:39,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:34:39,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:34:39,677 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:34:39,677 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:39,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:34:39,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:34:39,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:34:39,678 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_61a62de4-32f9-4179-a558-4526eae4507a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 [2021-11-07 01:34:40,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:34:40,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:34:40,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:34:40,264 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:34:40,265 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:34:40,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2021-11-07 01:34:40,363 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/data/f2cbfd216/bbf3e181bddb4096bdd46a95c00acafd/FLAGd67ed8f4d [2021-11-07 01:34:41,465 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:34:41,466 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2021-11-07 01:34:41,529 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/data/f2cbfd216/bbf3e181bddb4096bdd46a95c00acafd/FLAGd67ed8f4d [2021-11-07 01:34:41,852 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/data/f2cbfd216/bbf3e181bddb4096bdd46a95c00acafd [2021-11-07 01:34:41,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:34:41,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:34:41,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:41,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:34:41,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:34:41,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:41" (1/1) ... [2021-11-07 01:34:41,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cbd3143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:41, skipping insertion in model container [2021-11-07 01:34:41,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:34:41" (1/1) ... [2021-11-07 01:34:41,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:34:42,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:34:42,396 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_61a62de4-32f9-4179-a558-4526eae4507a/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2021-11-07 01:34:42,406 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_61a62de4-32f9-4179-a558-4526eae4507a/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2021-11-07 01:34:42,443 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:34:42,461 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:34:43,694 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:34:43,790 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:43,790 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:43,791 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:43,792 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:43,794 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:43,812 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:43,813 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:43,815 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:43,816 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:44,316 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:34:44,318 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:34:44,320 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:34:44,322 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:34:44,324 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:34:44,325 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:34:44,326 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:34:44,328 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:34:44,329 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:34:44,330 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:34:44,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:44,550 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:44,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:44,712 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:34:44,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:34:44,803 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_61a62de4-32f9-4179-a558-4526eae4507a/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2021-11-07 01:34:44,804 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_61a62de4-32f9-4179-a558-4526eae4507a/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2021-11-07 01:34:44,807 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:34:44,810 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:34:44,876 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:34:44,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:44,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:44,938 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:44,939 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:44,940 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:44,953 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:44,959 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:44,960 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:44,961 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,042 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:34:45,048 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:34:45,049 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:34:45,050 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:34:45,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:34:45,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:34:45,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:34:45,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:34:45,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:34:45,059 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:34:45,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:45,241 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:34:45,267 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_61a62de4-32f9-4179-a558-4526eae4507a/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2021-11-07 01:34:45,274 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_61a62de4-32f9-4179-a558-4526eae4507a/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2021-11-07 01:34:45,276 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:34:45,279 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:34:45,329 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:34:45,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,391 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,392 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,393 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,404 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,404 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,406 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,406 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,464 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:34:45,465 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:34:45,465 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:34:45,466 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:34:45,468 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:34:45,468 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:34:45,469 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:34:45,470 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:34:45,470 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:34:45,471 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:34:45,523 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,524 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:34:45,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:34:46,075 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:34:46,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:46 WrapperNode [2021-11-07 01:34:46,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:34:46,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:34:46,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:34:46,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:34:46,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:46" (1/1) ... [2021-11-07 01:34:46,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:46" (1/1) ... [2021-11-07 01:34:46,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:34:46,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:34:46,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:34:46,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:34:46,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:46" (1/1) ... [2021-11-07 01:34:46,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:46" (1/1) ... [2021-11-07 01:34:46,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:46" (1/1) ... [2021-11-07 01:34:46,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:46" (1/1) ... [2021-11-07 01:34:46,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:46" (1/1) ... [2021-11-07 01:34:46,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:46" (1/1) ... [2021-11-07 01:34:46,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:46" (1/1) ... [2021-11-07 01:34:46,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:34:46,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:34:46,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:34:46,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:34:46,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:46" (1/1) ... [2021-11-07 01:34:46,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:34:46,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:34:46,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:34:46,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:34:46,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:34:46,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:34:46,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:34:46,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:34:46,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:34:46,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:34:46,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:34:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:34:46,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:34:46,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:34:46,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:34:46,802 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-07 01:34:46,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:34:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:34:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:34:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:35:07,920 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:35:07,920 INFO L299 CfgBuilder]: Removed 280 assume(true) statements. [2021-11-07 01:35:07,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:35:07 BoogieIcfgContainer [2021-11-07 01:35:07,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:35:07,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:35:07,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:35:07,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:35:07,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:34:41" (1/3) ... [2021-11-07 01:35:07,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4353fabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:35:07, skipping insertion in model container [2021-11-07 01:35:07,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:34:46" (2/3) ... [2021-11-07 01:35:07,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4353fabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:35:07, skipping insertion in model container [2021-11-07 01:35:07,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:35:07" (3/3) ... [2021-11-07 01:35:07,934 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_top_harness.i [2021-11-07 01:35:07,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:35:07,941 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-07 01:35:08,005 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:35:08,013 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 01:35:08,013 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-07 01:35:08,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 352 states, 334 states have (on average 1.4311377245508983) internal successors, (478), 351 states have internal predecessors, (478), 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 01:35:08,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:35:08,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:08,091 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:08,092 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 01:35:08,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:08,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1155465246, now seen corresponding path program 1 times [2021-11-07 01:35:08,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:08,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144319461] [2021-11-07 01:35:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:08,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:08,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:08,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:08,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:35:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:13,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:35:13,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:13,271 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 01:35:13,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:13,440 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 01:35:13,441 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:13,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144319461] [2021-11-07 01:35:13,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144319461] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:13,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:13,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:35:13,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302712487] [2021-11-07 01:35:13,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:35:13,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:13,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:35:13,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:35:13,478 INFO L87 Difference]: Start difference. First operand has 352 states, 334 states have (on average 1.4311377245508983) internal successors, (478), 351 states have internal predecessors, (478), 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 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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 01:35:13,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:13,558 INFO L93 Difference]: Finished difference Result 698 states and 949 transitions. [2021-11-07 01:35:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:35:13,560 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:35:13,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:13,590 INFO L225 Difference]: With dead ends: 698 [2021-11-07 01:35:13,591 INFO L226 Difference]: Without dead ends: 345 [2021-11-07 01:35:13,601 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 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 01:35:13,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-07 01:35:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-11-07 01:35:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 328 states have (on average 1.3170731707317074) internal successors, (432), 344 states have internal predecessors, (432), 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 01:35:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 432 transitions. [2021-11-07 01:35:13,701 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 432 transitions. Word has length 44 [2021-11-07 01:35:13,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:13,702 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 432 transitions. [2021-11-07 01:35:13,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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 01:35:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 432 transitions. [2021-11-07 01:35:13,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:35:13,717 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:13,717 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:13,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:13,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:13,931 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 01:35:13,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:13,932 INFO L85 PathProgramCache]: Analyzing trace with hash -892659362, now seen corresponding path program 1 times [2021-11-07 01:35:13,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:13,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757219774] [2021-11-07 01:35:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:13,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:13,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:13,938 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:13,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:35:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:18,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:35:18,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:19,477 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 01:35:19,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:19,808 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 01:35:19,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:19,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757219774] [2021-11-07 01:35:19,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757219774] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:19,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:19,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:35:19,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91612371] [2021-11-07 01:35:19,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:35:19,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:19,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:35:19,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:35:19,814 INFO L87 Difference]: Start difference. First operand 345 states and 432 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 01:35:20,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:20,097 INFO L93 Difference]: Finished difference Result 610 states and 759 transitions. [2021-11-07 01:35:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:35:20,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:35:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:20,101 INFO L225 Difference]: With dead ends: 610 [2021-11-07 01:35:20,102 INFO L226 Difference]: Without dead ends: 345 [2021-11-07 01:35:20,104 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 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 01:35:20,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-07 01:35:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-11-07 01:35:20,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 328 states have (on average 1.3109756097560976) internal successors, (430), 344 states have internal predecessors, (430), 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 01:35:20,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 430 transitions. [2021-11-07 01:35:20,126 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 430 transitions. Word has length 44 [2021-11-07 01:35:20,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:20,127 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 430 transitions. [2021-11-07 01:35:20,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 01:35:20,127 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 430 transitions. [2021-11-07 01:35:20,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:35:20,130 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:20,130 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] [2021-11-07 01:35:20,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:20,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:20,350 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 01:35:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:20,351 INFO L85 PathProgramCache]: Analyzing trace with hash -620500979, now seen corresponding path program 1 times [2021-11-07 01:35:20,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:20,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147253537] [2021-11-07 01:35:20,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:20,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:20,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:20,364 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:20,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:35:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:25,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 1670 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:35:25,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:26,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:26,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:26,656 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 01:35:26,656 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:26,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147253537] [2021-11-07 01:35:26,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147253537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:26,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:26,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:35:26,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265245252] [2021-11-07 01:35:26,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:35:26,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:26,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:35:26,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:35:26,660 INFO L87 Difference]: Start difference. First operand 345 states and 430 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 01:35:28,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:28,836 INFO L93 Difference]: Finished difference Result 725 states and 889 transitions. [2021-11-07 01:35:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:35:28,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 48 [2021-11-07 01:35:28,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:28,842 INFO L225 Difference]: With dead ends: 725 [2021-11-07 01:35:28,842 INFO L226 Difference]: Without dead ends: 428 [2021-11-07 01:35:28,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:35:28,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-07 01:35:28,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 345. [2021-11-07 01:35:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 328 states have (on average 1.3048780487804879) internal successors, (428), 344 states have internal predecessors, (428), 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 01:35:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 428 transitions. [2021-11-07 01:35:28,866 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 428 transitions. Word has length 48 [2021-11-07 01:35:28,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:28,867 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 428 transitions. [2021-11-07 01:35:28,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 01:35:28,867 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 428 transitions. [2021-11-07 01:35:28,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:35:28,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:28,870 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] [2021-11-07 01:35:28,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 01:35:29,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:29,091 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 01:35:29,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:29,092 INFO L85 PathProgramCache]: Analyzing trace with hash -582936023, now seen corresponding path program 1 times [2021-11-07 01:35:29,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:29,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246608958] [2021-11-07 01:35:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:29,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:29,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:29,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:29,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:35:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:34,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:35:34,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:34,896 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 01:35:34,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:35,242 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 01:35:35,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:35,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246608958] [2021-11-07 01:35:35,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246608958] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:35,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:35,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:35:35,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62618737] [2021-11-07 01:35:35,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:35:35,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:35,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:35:35,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:35:35,246 INFO L87 Difference]: Start difference. First operand 345 states and 428 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 01:35:35,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:35,673 INFO L93 Difference]: Finished difference Result 611 states and 754 transitions. [2021-11-07 01:35:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:35:35,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 56 [2021-11-07 01:35:35,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:35,677 INFO L225 Difference]: With dead ends: 611 [2021-11-07 01:35:35,677 INFO L226 Difference]: Without dead ends: 345 [2021-11-07 01:35:35,678 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 107 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 01:35:35,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-07 01:35:35,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-11-07 01:35:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 328 states have (on average 1.298780487804878) internal successors, (426), 344 states have internal predecessors, (426), 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 01:35:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 426 transitions. [2021-11-07 01:35:35,702 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 426 transitions. Word has length 56 [2021-11-07 01:35:35,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:35,702 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 426 transitions. [2021-11-07 01:35:35,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 01:35:35,703 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 426 transitions. [2021-11-07 01:35:35,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:35:35,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:35,706 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, 1, 1, 1] [2021-11-07 01:35:35,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:35,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:35,922 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 01:35:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1336520550, now seen corresponding path program 1 times [2021-11-07 01:35:35,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:35,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22036605] [2021-11-07 01:35:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:35,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:35,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:35,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:35,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:35:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:41,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 1761 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:35:41,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:42,345 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 01:35:42,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:42,804 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 01:35:42,804 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:42,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22036605] [2021-11-07 01:35:42,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22036605] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:42,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:42,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-07 01:35:42,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927030559] [2021-11-07 01:35:42,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:35:42,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:42,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:35:42,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:35:42,807 INFO L87 Difference]: Start difference. First operand 345 states and 426 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 01:35:44,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:44,519 INFO L93 Difference]: Finished difference Result 627 states and 774 transitions. [2021-11-07 01:35:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:35:44,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 68 [2021-11-07 01:35:44,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:44,524 INFO L225 Difference]: With dead ends: 627 [2021-11-07 01:35:44,524 INFO L226 Difference]: Without dead ends: 345 [2021-11-07 01:35:44,525 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:35:44,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-07 01:35:44,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-11-07 01:35:44,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 328 states have (on average 1.2926829268292683) internal successors, (424), 344 states have internal predecessors, (424), 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 01:35:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 424 transitions. [2021-11-07 01:35:44,547 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 424 transitions. Word has length 68 [2021-11-07 01:35:44,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:44,547 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 424 transitions. [2021-11-07 01:35:44,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 01:35:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 424 transitions. [2021-11-07 01:35:44,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 01:35:44,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:44,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:44,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:44,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:44,771 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 01:35:44,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1065001986, now seen corresponding path program 1 times [2021-11-07 01:35:44,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:44,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506822059] [2021-11-07 01:35:44,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:44,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:44,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:44,777 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:44,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:35:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:50,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1820 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:35:50,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:51,063 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 01:35:51,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:51,332 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 01:35:51,333 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:51,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506822059] [2021-11-07 01:35:51,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506822059] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:51,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:51,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:35:51,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868287797] [2021-11-07 01:35:51,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:35:51,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:51,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:35:51,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:35:51,336 INFO L87 Difference]: Start difference. First operand 345 states and 424 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 01:35:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:51,765 INFO L93 Difference]: Finished difference Result 872 states and 1066 transitions. [2021-11-07 01:35:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:35:51,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 76 [2021-11-07 01:35:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:51,777 INFO L225 Difference]: With dead ends: 872 [2021-11-07 01:35:51,778 INFO L226 Difference]: Without dead ends: 605 [2021-11-07 01:35:51,780 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:35:51,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-11-07 01:35:51,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 357. [2021-11-07 01:35:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 340 states have (on average 1.2941176470588236) internal successors, (440), 356 states have internal predecessors, (440), 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 01:35:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 440 transitions. [2021-11-07 01:35:51,841 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 440 transitions. Word has length 76 [2021-11-07 01:35:51,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:51,842 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 440 transitions. [2021-11-07 01:35:51,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 01:35:51,842 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 440 transitions. [2021-11-07 01:35:51,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 01:35:51,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:51,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:51,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:52,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:52,071 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 01:35:52,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:52,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1339761600, now seen corresponding path program 1 times [2021-11-07 01:35:52,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:52,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760397710] [2021-11-07 01:35:52,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:52,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:52,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:52,079 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:52,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:35:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:58,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1823 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:35:58,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:59,306 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 01:35:59,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:59,961 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 01:35:59,961 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:59,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760397710] [2021-11-07 01:35:59,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760397710] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:59,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:59,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-07 01:35:59,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422460930] [2021-11-07 01:35:59,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:35:59,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:59,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:35:59,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:35:59,963 INFO L87 Difference]: Start difference. First operand 357 states and 440 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 01:36:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:46,277 INFO L93 Difference]: Finished difference Result 879 states and 1076 transitions. [2021-11-07 01:36:46,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:36:46,281 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 76 [2021-11-07 01:36:46,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:46,286 INFO L225 Difference]: With dead ends: 879 [2021-11-07 01:36:46,286 INFO L226 Difference]: Without dead ends: 597 [2021-11-07 01:36:46,288 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:36:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-07 01:36:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 357. [2021-11-07 01:36:46,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 340 states have (on average 1.2882352941176471) internal successors, (438), 356 states have internal predecessors, (438), 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 01:36:46,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 438 transitions. [2021-11-07 01:36:46,317 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 438 transitions. Word has length 76 [2021-11-07 01:36:46,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:46,318 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 438 transitions. [2021-11-07 01:36:46,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 01:36:46,319 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 438 transitions. [2021-11-07 01:36:46,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 01:36:46,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:46,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:46,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:46,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:46,535 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 01:36:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1317129346, now seen corresponding path program 1 times [2021-11-07 01:36:46,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:46,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795295816] [2021-11-07 01:36:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:46,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:46,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:46,541 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:46,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:36:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:52,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 1821 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:36:52,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:53,064 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 01:36:53,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:53,751 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 01:36:53,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:53,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795295816] [2021-11-07 01:36:53,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795295816] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:53,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:53,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-07 01:36:53,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65427000] [2021-11-07 01:36:53,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:36:53,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:53,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:36:53,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:36:53,753 INFO L87 Difference]: Start difference. First operand 357 states and 438 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 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 01:37:47,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:47,074 INFO L93 Difference]: Finished difference Result 881 states and 1074 transitions. [2021-11-07 01:37:47,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:37:47,078 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 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 76 [2021-11-07 01:37:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:47,083 INFO L225 Difference]: With dead ends: 881 [2021-11-07 01:37:47,083 INFO L226 Difference]: Without dead ends: 599 [2021-11-07 01:37:47,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:37:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-07 01:37:47,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 361. [2021-11-07 01:37:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 344 states have (on average 1.2790697674418605) internal successors, (440), 360 states have internal predecessors, (440), 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 01:37:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 440 transitions. [2021-11-07 01:37:47,113 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 440 transitions. Word has length 76 [2021-11-07 01:37:47,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:47,114 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 440 transitions. [2021-11-07 01:37:47,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 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 01:37:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 440 transitions. [2021-11-07 01:37:47,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 01:37:47,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:47,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:47,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 01:37:47,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:47,323 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 01:37:47,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:47,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1826602436, now seen corresponding path program 1 times [2021-11-07 01:37:47,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:47,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715892567] [2021-11-07 01:37:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:47,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:47,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:47,330 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:47,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a62de4-32f9-4179-a558-4526eae4507a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:37:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:53,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-07 01:37:53,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:01,789 INFO L354 Elim1Store]: treesize reduction 560, result has 54.6 percent of original size [2021-11-07 01:38:01,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 625 treesize of output 913 [2021-11-07 01:38:01,878 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-07 01:38:01,879 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 1729 treesize of output 1709 [2021-11-07 01:38:01,942 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-07 01:38:01,943 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 1703 treesize of output 1683 [2021-11-07 01:40:51,147 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 01:40:51,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:13,602 INFO L354 Elim1Store]: treesize reduction 21, result has 54.3 percent of original size [2021-11-07 01:41:13,603 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 723 treesize of output 723 [2021-11-07 01:41:13,973 INFO L354 Elim1Store]: treesize reduction 21, result has 54.3 percent of original size [2021-11-07 01:41:13,973 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 719 treesize of output 719 [2021-11-07 01:43:07,159 WARN L207 SmtUtils]: Spent 1.74 m on a formula simplification. DAG size of input: 1178 DAG size of output: 750 [2021-11-07 01:43:07,166 INFO L354 Elim1Store]: treesize reduction 1688, result has 56.6 percent of original size [2021-11-07 01:43:07,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 24 select indices, 24 select index equivalence classes, 0 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 733 treesize of output 2405