./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF --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 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:43:34,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:43:34,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:43:34,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:43:34,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:43:34,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:43:34,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:43:34,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:43:34,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:43:34,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:43:34,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:43:34,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:43:34,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:43:34,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:43:34,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:43:34,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:43:34,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:43:34,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:43:34,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:43:34,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:43:34,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:43:34,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:43:34,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:43:34,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:43:34,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:43:34,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:43:34,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:43:34,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:43:34,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:43:34,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:43:34,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:43:34,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:43:34,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:43:34,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:43:34,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:43:34,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:43:34,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:43:34,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:43:34,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:43:34,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:43:34,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:43:34,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:43:34,793 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:43:34,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:43:34,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:43:34,795 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:43:34,796 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:43:34,796 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:43:34,796 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:43:34,797 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:43:34,804 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:43:34,805 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:43:34,806 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:43:34,807 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:43:34,807 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:43:34,807 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:43:34,808 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:43:34,808 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:43:34,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:43:34,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:43:34,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:43:34,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:43:34,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:43:34,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:43:34,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:43:34,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:43:34,811 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:43:34,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:43:34,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:43:34,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:43:34,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:34,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:43:34,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:43:34,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:43:34,815 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:43:34,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:43:34,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:43:34,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:43:34,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:43:34,817 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_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d [2021-11-12 23:43:35,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:43:35,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:43:35,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:43:35,156 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:43:35,157 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:43:35,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2021-11-12 23:43:35,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/data/d74912fdd/0ed331b0f8ca48b6ac569298187e55eb/FLAGab3d8be62 [2021-11-12 23:43:36,360 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:43:36,361 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2021-11-12 23:43:36,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/data/d74912fdd/0ed331b0f8ca48b6ac569298187e55eb/FLAGab3d8be62 [2021-11-12 23:43:36,720 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/data/d74912fdd/0ed331b0f8ca48b6ac569298187e55eb [2021-11-12 23:43:36,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:43:36,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:43:36,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:36,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:43:36,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:43:36,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:36" (1/1) ... [2021-11-12 23:43:36,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3377327f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:36, skipping insertion in model container [2021-11-12 23:43:36,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:36" (1/1) ... [2021-11-12 23:43:36,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:43:36,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:37,321 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_9b2df1dd-af25-4190-8cd3-593ed67956dd/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2021-11-12 23:43:37,331 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_9b2df1dd-af25-4190-8cd3-593ed67956dd/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2021-11-12 23:43:37,362 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:43:37,370 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:43:38,957 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:38,967 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:38,968 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:38,969 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:38,974 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:38,998 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:38,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:39,006 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:39,007 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:39,661 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:43:39,663 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:43:39,665 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:43:39,667 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:43:39,675 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:43:39,676 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:43:39,677 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:43:39,679 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:43:39,681 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:43:39,682 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:43:39,963 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:43:39,981 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:39,981 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:40,131 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:40,132 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:40,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:40,341 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) [2021-11-12 23:43:40,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5abc35bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:40, skipping insertion in model container [2021-11-12 23:43:40,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:40,343 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:43:40,347 INFO L158 Benchmark]: Toolchain (without parser) took 3618.84ms. Allocated memory is still 125.8MB. Free memory was 83.7MB in the beginning and 49.1MB in the end (delta: 34.6MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2021-11-12 23:43:40,348 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:43:40,350 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3615.24ms. Allocated memory is still 125.8MB. Free memory was 83.5MB in the beginning and 49.1MB in the end (delta: 34.4MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2021-11-12 23:43:40,352 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3615.24ms. Allocated memory is still 125.8MB. Free memory was 83.5MB in the beginning and 49.1MB in the end (delta: 34.4MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6984]: 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_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF --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 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:43:43,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:43:43,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:43:43,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:43:43,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:43:43,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:43:43,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:43:43,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:43:43,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:43:43,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:43:43,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:43:43,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:43:43,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:43:43,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:43:43,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:43:43,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:43:43,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:43:43,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:43:43,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:43:43,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:43:43,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:43:43,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:43:43,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:43:43,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:43:43,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:43:43,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:43:43,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:43:43,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:43:43,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:43:43,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:43:43,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:43:43,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:43:43,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:43:43,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:43:43,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:43:43,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:43:43,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:43:43,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:43:43,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:43:43,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:43:43,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:43:43,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:43:43,468 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:43:43,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:43:43,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:43:43,471 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:43:43,471 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:43:43,471 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:43:43,471 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:43:43,471 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:43:43,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:43:43,472 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:43:43,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:43:43,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:43:43,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:43:43,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:43:43,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:43:43,475 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:43:43,475 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:43:43,475 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:43:43,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:43:43,476 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:43:43,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:43:43,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:43:43,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:43:43,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:43:43,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:43,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:43:43,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:43:43,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:43:43,477 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:43:43,478 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:43:43,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:43:43,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:43:43,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:43:43,478 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_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d [2021-11-12 23:43:43,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:43:43,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:43:43,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:43:43,933 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:43:43,934 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:43:43,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2021-11-12 23:43:44,018 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/data/5f90253bd/826576ba6fe644ef8cc298680c7134c2/FLAG7fbf1aa6e [2021-11-12 23:43:45,216 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:43:45,218 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2021-11-12 23:43:45,269 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/data/5f90253bd/826576ba6fe644ef8cc298680c7134c2/FLAG7fbf1aa6e [2021-11-12 23:43:45,475 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/data/5f90253bd/826576ba6fe644ef8cc298680c7134c2 [2021-11-12 23:43:45,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:43:45,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:43:45,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:45,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:43:45,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:43:45,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:45" (1/1) ... [2021-11-12 23:43:45,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e851ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:45, skipping insertion in model container [2021-11-12 23:43:45,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:45" (1/1) ... [2021-11-12 23:43:45,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:43:45,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:45,974 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_9b2df1dd-af25-4190-8cd3-593ed67956dd/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2021-11-12 23:43:45,984 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_9b2df1dd-af25-4190-8cd3-593ed67956dd/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2021-11-12 23:43:46,013 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:43:46,020 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:43:47,167 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:47,168 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:47,168 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:47,170 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:47,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:47,192 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:47,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:47,196 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:47,196 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:47,802 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:43:47,804 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:43:47,820 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:43:47,822 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:43:47,824 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:43:47,825 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:43:47,835 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:43:47,836 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:43:47,837 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:43:47,838 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:43:48,070 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:43:48,084 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,084 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,194 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,195 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:48,426 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:43:48,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:48,499 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2021-11-12 23:43:48,503 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_9b2df1dd-af25-4190-8cd3-593ed67956dd/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2021-11-12 23:43:48,512 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:43:48,513 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:43:48,579 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,580 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,581 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,582 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,594 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,594 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,596 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,597 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,650 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:43:48,651 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:43:48,652 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:43:48,653 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:43:48,655 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:43:48,655 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:43:48,664 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:43:48,664 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:43:48,665 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:43:48,666 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:43:48,706 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:43:48,712 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,712 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,782 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,787 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:48,883 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:43:48,910 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_9b2df1dd-af25-4190-8cd3-593ed67956dd/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2021-11-12 23:43:48,917 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_9b2df1dd-af25-4190-8cd3-593ed67956dd/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2021-11-12 23:43:48,919 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:43:48,920 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:43:48,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,977 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,978 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,979 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,985 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,986 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:48,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:49,021 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:43:49,022 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:43:49,023 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:43:49,024 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:43:49,025 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:43:49,025 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:43:49,026 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:43:49,026 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:43:49,027 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:43:49,027 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:43:49,049 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:43:49,055 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:49,055 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:49,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:49,207 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:49,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:49,624 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:43:49,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:49 WrapperNode [2021-11-12 23:43:49,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:49,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:43:49,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:43:49,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:43:49,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:49" (1/1) ... [2021-11-12 23:43:49,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:49" (1/1) ... [2021-11-12 23:43:49,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:43:49,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:43:49,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:43:49,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:43:49,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:49" (1/1) ... [2021-11-12 23:43:49,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:49" (1/1) ... [2021-11-12 23:43:49,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:49" (1/1) ... [2021-11-12 23:43:49,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:49" (1/1) ... [2021-11-12 23:43:50,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:49" (1/1) ... [2021-11-12 23:43:50,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:49" (1/1) ... [2021-11-12 23:43:50,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:49" (1/1) ... [2021-11-12 23:43:50,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:43:50,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:43:50,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:43:50,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:43:50,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:49" (1/1) ... [2021-11-12 23:43:50,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:50,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:50,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:43:50,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:43:50,202 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-12 23:43:50,203 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-12 23:43:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:43:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:43:50,203 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:43:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:43:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:43:50,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:43:50,204 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 23:43:50,204 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 23:43:50,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:43:50,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:43:50,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:43:50,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:43:50,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:43:50,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:43:50,205 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:43:50,205 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:43:50,205 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2021-11-12 23:43:50,205 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2021-11-12 23:43:50,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:43:50,206 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-12 23:43:50,206 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-12 23:43:50,206 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-12 23:43:50,206 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:43:50,206 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:43:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:43:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-12 23:43:50,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-12 23:43:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:43:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:43:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:43:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 23:43:50,208 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 23:43:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-12 23:43:50,208 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-12 23:44:05,706 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:44:05,706 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-12 23:44:05,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:44:05 BoogieIcfgContainer [2021-11-12 23:44:05,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:44:05,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:44:05,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:44:05,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:44:05,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:43:45" (1/3) ... [2021-11-12 23:44:05,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f0f051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:44:05, skipping insertion in model container [2021-11-12 23:44:05,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:49" (2/3) ... [2021-11-12 23:44:05,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f0f051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:44:05, skipping insertion in model container [2021-11-12 23:44:05,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:44:05" (3/3) ... [2021-11-12 23:44:05,724 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_relative_harness.i [2021-11-12 23:44:05,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:44:05,759 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:44:05,859 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:44:05,867 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 [2021-11-12 23:44:05,867 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:44:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 109 states have internal predecessors, (145), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-11-12 23:44:05,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-12 23:44:05,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:05,922 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:05,922 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:05,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:05,936 INFO L85 PathProgramCache]: Analyzing trace with hash 578118493, now seen corresponding path program 1 times [2021-11-12 23:44:05,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:05,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700035103] [2021-11-12 23:44:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:05,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:05,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:05,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:05,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:44:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:10,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:44:10,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:44:11,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:44:11,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:11,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700035103] [2021-11-12 23:44:11,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700035103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:11,265 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:11,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:44:11,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673355727] [2021-11-12 23:44:11,268 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:11,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:44:11,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:11,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:44:11,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:44:11,370 INFO L87 Difference]: Start difference. First operand has 159 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 109 states have internal predecessors, (145), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 23:44:11,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:11,430 INFO L93 Difference]: Finished difference Result 308 states and 443 transitions. [2021-11-12 23:44:11,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:44:11,433 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2021-11-12 23:44:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:11,448 INFO L225 Difference]: With dead ends: 308 [2021-11-12 23:44:11,448 INFO L226 Difference]: Without dead ends: 154 [2021-11-12 23:44:11,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:44:11,460 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:11,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 3.21ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:44:11,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-12 23:44:11,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-11-12 23:44:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 105 states have internal predecessors, (131), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-12 23:44:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 206 transitions. [2021-11-12 23:44:11,535 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 206 transitions. Word has length 46 [2021-11-12 23:44:11,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:11,536 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 206 transitions. [2021-11-12 23:44:11,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 23:44:11,537 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 206 transitions. [2021-11-12 23:44:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-12 23:44:11,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:11,541 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:11,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:11,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:11,768 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:11,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:11,769 INFO L85 PathProgramCache]: Analyzing trace with hash 634957785, now seen corresponding path program 1 times [2021-11-12 23:44:11,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:11,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621665398] [2021-11-12 23:44:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:11,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:11,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:11,784 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:11,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:44:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:16,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:44:16,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:44:17,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:17,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:44:17,590 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:17,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621665398] [2021-11-12 23:44:17,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621665398] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:17,591 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:17,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:44:17,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184436957] [2021-11-12 23:44:17,592 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:17,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:44:17,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:17,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:44:17,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:44:17,595 INFO L87 Difference]: Start difference. First operand 154 states and 206 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 23:44:17,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:17,920 INFO L93 Difference]: Finished difference Result 295 states and 401 transitions. [2021-11-12 23:44:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:44:17,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 46 [2021-11-12 23:44:17,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:17,930 INFO L225 Difference]: With dead ends: 295 [2021-11-12 23:44:17,934 INFO L226 Difference]: Without dead ends: 157 [2021-11-12 23:44:17,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:44:17,946 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 75 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 231.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 270.76ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:17,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 663 Invalid, 52 Unknown, 0 Unchecked, 9.88ms Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 270.76ms Time] [2021-11-12 23:44:17,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-12 23:44:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-11-12 23:44:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 108 states have internal predecessors, (133), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2021-11-12 23:44:18,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2021-11-12 23:44:18,009 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 46 [2021-11-12 23:44:18,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:18,010 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2021-11-12 23:44:18,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 23:44:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2021-11-12 23:44:18,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-12 23:44:18,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:18,019 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:18,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:18,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:18,237 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:18,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1786021348, now seen corresponding path program 1 times [2021-11-12 23:44:18,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:18,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591014515] [2021-11-12 23:44:18,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:18,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:18,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:18,255 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:18,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:44:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:23,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:44:23,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:23,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:44:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:44:24,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:25,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-12 23:44:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:44:26,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:26,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591014515] [2021-11-12 23:44:26,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591014515] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:26,315 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:26,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 18 [2021-11-12 23:44:26,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390440874] [2021-11-12 23:44:26,316 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:26,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:44:26,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:26,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:44:26,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:44:26,318 INFO L87 Difference]: Start difference. First operand 157 states and 214 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 15 states have internal predecessors, (57), 6 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-12 23:44:28,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:30,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:30,417 INFO L93 Difference]: Finished difference Result 328 states and 454 transitions. [2021-11-12 23:44:30,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:44:30,419 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 15 states have internal predecessors, (57), 6 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 52 [2021-11-12 23:44:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:30,423 INFO L225 Difference]: With dead ends: 328 [2021-11-12 23:44:30,423 INFO L226 Difference]: Without dead ends: 182 [2021-11-12 23:44:30,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-12 23:44:30,426 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 109 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3516.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.14ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 3727.69ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:30,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 2163 Invalid, 403 Unknown, 0 Unchecked, 21.14ms Time], IncrementalHoareTripleChecker [24 Valid, 241 Invalid, 1 Unknown, 137 Unchecked, 3727.69ms Time] [2021-11-12 23:44:30,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-12 23:44:30,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2021-11-12 23:44:30,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 124 states have (on average 1.25) internal successors, (155), 127 states have internal predecessors, (155), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (54), 40 states have call predecessors, (54), 41 states have call successors, (54) [2021-11-12 23:44:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 251 transitions. [2021-11-12 23:44:30,458 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 251 transitions. Word has length 52 [2021-11-12 23:44:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:30,458 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 251 transitions. [2021-11-12 23:44:30,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 15 states have internal predecessors, (57), 6 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-12 23:44:30,459 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 251 transitions. [2021-11-12 23:44:30,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-12 23:44:30,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:30,461 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:30,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 23:44:30,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:30,671 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:30,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:30,673 INFO L85 PathProgramCache]: Analyzing trace with hash -585717914, now seen corresponding path program 1 times [2021-11-12 23:44:30,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:30,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310887231] [2021-11-12 23:44:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:30,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:30,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:30,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:30,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:44:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:35,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:44:35,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:44:35,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:44:35,850 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:35,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310887231] [2021-11-12 23:44:35,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310887231] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:35,851 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:35,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:44:35,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420499379] [2021-11-12 23:44:35,851 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:35,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:44:35,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:35,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:44:35,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:44:35,853 INFO L87 Difference]: Start difference. First operand 180 states and 251 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:44:35,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:35,958 INFO L93 Difference]: Finished difference Result 345 states and 491 transitions. [2021-11-12 23:44:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:44:35,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2021-11-12 23:44:35,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:35,962 INFO L225 Difference]: With dead ends: 345 [2021-11-12 23:44:35,962 INFO L226 Difference]: Without dead ends: 190 [2021-11-12 23:44:35,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:44:35,965 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 20 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.01ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.18ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:35,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 610 Invalid, 16 Unknown, 0 Unchecked, 3.01ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 62.18ms Time] [2021-11-12 23:44:35,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-12 23:44:35,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 178. [2021-11-12 23:44:35,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 122 states have (on average 1.2459016393442623) internal successors, (152), 125 states have internal predecessors, (152), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (54), 40 states have call predecessors, (54), 41 states have call successors, (54) [2021-11-12 23:44:35,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 248 transitions. [2021-11-12 23:44:35,992 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 248 transitions. Word has length 52 [2021-11-12 23:44:35,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:35,993 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 248 transitions. [2021-11-12 23:44:35,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:44:35,993 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 248 transitions. [2021-11-12 23:44:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 23:44:35,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:35,996 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:36,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:36,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:36,215 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:36,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:36,215 INFO L85 PathProgramCache]: Analyzing trace with hash 544221996, now seen corresponding path program 1 times [2021-11-12 23:44:36,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:36,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656534117] [2021-11-12 23:44:36,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:36,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:36,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:36,220 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:36,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:44:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:40,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:44:40,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:44:41,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:44:42,571 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:42,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656534117] [2021-11-12 23:44:42,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656534117] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:42,572 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:42,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 23:44:42,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46304331] [2021-11-12 23:44:42,572 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:42,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:44:42,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:42,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:44:42,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:44:42,575 INFO L87 Difference]: Start difference. First operand 178 states and 248 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:44:44,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:46,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:48,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:48,599 INFO L93 Difference]: Finished difference Result 364 states and 528 transitions. [2021-11-12 23:44:48,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:44:48,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2021-11-12 23:44:48,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:48,605 INFO L225 Difference]: With dead ends: 364 [2021-11-12 23:44:48,605 INFO L226 Difference]: Without dead ends: 207 [2021-11-12 23:44:48,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:44:48,608 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 77 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5373.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.40ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 5601.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:48,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 792 Invalid, 107 Unknown, 0 Unchecked, 5.40ms Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 2 Unknown, 4 Unchecked, 5601.57ms Time] [2021-11-12 23:44:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-12 23:44:48,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 187. [2021-11-12 23:44:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 131 states have (on average 1.251908396946565) internal successors, (164), 134 states have internal predecessors, (164), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (54), 40 states have call predecessors, (54), 41 states have call successors, (54) [2021-11-12 23:44:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 260 transitions. [2021-11-12 23:44:48,648 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 260 transitions. Word has length 56 [2021-11-12 23:44:48,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:48,648 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 260 transitions. [2021-11-12 23:44:48,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:44:48,649 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 260 transitions. [2021-11-12 23:44:48,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 23:44:48,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:48,651 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:48,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:48,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:48,875 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:48,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:48,876 INFO L85 PathProgramCache]: Analyzing trace with hash 34748906, now seen corresponding path program 1 times [2021-11-12 23:44:48,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:48,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991114979] [2021-11-12 23:44:48,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:48,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:48,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:48,880 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:48,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:44:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:53,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:44:53,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:44:55,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:44:58,489 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:58,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991114979] [2021-11-12 23:44:58,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991114979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:58,490 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:58,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 19 [2021-11-12 23:44:58,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127000878] [2021-11-12 23:44:58,491 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:58,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-12 23:44:58,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:58,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-12 23:44:58,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:44:58,493 INFO L87 Difference]: Start difference. First operand 187 states and 260 transitions. Second operand has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 23:45:00,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:45:06,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:06,375 INFO L93 Difference]: Finished difference Result 370 states and 542 transitions. [2021-11-12 23:45:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:45:06,379 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2021-11-12 23:45:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:06,382 INFO L225 Difference]: With dead ends: 370 [2021-11-12 23:45:06,383 INFO L226 Difference]: Without dead ends: 203 [2021-11-12 23:45:06,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2021-11-12 23:45:06,386 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 78 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3981.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.08ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 4247.11ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:06,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 2852 Invalid, 511 Unknown, 0 Unchecked, 15.08ms Time], IncrementalHoareTripleChecker [6 Valid, 258 Invalid, 1 Unknown, 246 Unchecked, 4247.11ms Time] [2021-11-12 23:45:06,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-12 23:45:06,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 192. [2021-11-12 23:45:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 139 states have internal predecessors, (166), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (62), 40 states have call predecessors, (62), 41 states have call successors, (62) [2021-11-12 23:45:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 270 transitions. [2021-11-12 23:45:06,432 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 270 transitions. Word has length 56 [2021-11-12 23:45:06,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:06,433 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 270 transitions. [2021-11-12 23:45:06,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 23:45:06,433 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 270 transitions. [2021-11-12 23:45:06,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 23:45:06,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:06,439 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:06,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:06,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:06,644 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash 471835438, now seen corresponding path program 1 times [2021-11-12 23:45:06,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:06,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646697819] [2021-11-12 23:45:06,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:06,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:06,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:06,654 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:06,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:45:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:11,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:45:11,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:45:11,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:45:11,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:11,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646697819] [2021-11-12 23:45:11,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646697819] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:11,891 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:45:11,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:45:11,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791280827] [2021-11-12 23:45:11,891 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:11,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:45:11,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:11,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:45:11,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:45:11,893 INFO L87 Difference]: Start difference. First operand 192 states and 270 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:45:11,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:11,998 INFO L93 Difference]: Finished difference Result 372 states and 545 transitions. [2021-11-12 23:45:11,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:45:11,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2021-11-12 23:45:11,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:12,002 INFO L225 Difference]: With dead ends: 372 [2021-11-12 23:45:12,002 INFO L226 Difference]: Without dead ends: 201 [2021-11-12 23:45:12,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:45:12,005 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 34 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.19ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:12,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 601 Invalid, 13 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 68.19ms Time] [2021-11-12 23:45:12,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-12 23:45:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 188. [2021-11-12 23:45:12,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 131 states have (on average 1.213740458015267) internal successors, (159), 135 states have internal predecessors, (159), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (62), 40 states have call predecessors, (62), 41 states have call successors, (62) [2021-11-12 23:45:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 263 transitions. [2021-11-12 23:45:12,028 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 263 transitions. Word has length 56 [2021-11-12 23:45:12,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:12,028 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 263 transitions. [2021-11-12 23:45:12,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:45:12,029 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 263 transitions. [2021-11-12 23:45:12,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 23:45:12,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:12,031 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:12,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:12,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:12,231 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:12,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:12,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1173435312, now seen corresponding path program 1 times [2021-11-12 23:45:12,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:12,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118960617] [2021-11-12 23:45:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:12,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:12,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:12,239 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:12,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:45:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:16,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:45:16,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:45:17,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:45:17,720 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:17,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118960617] [2021-11-12 23:45:17,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118960617] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:17,721 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:45:17,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 10 [2021-11-12 23:45:17,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707572685] [2021-11-12 23:45:17,721 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:17,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:45:17,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:17,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:45:17,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:45:17,723 INFO L87 Difference]: Start difference. First operand 188 states and 263 transitions. Second operand has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-12 23:45:18,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:18,093 INFO L93 Difference]: Finished difference Result 362 states and 515 transitions. [2021-11-12 23:45:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:45:18,094 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 56 [2021-11-12 23:45:18,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:18,096 INFO L225 Difference]: With dead ends: 362 [2021-11-12 23:45:18,096 INFO L226 Difference]: Without dead ends: 193 [2021-11-12 23:45:18,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:45:18,098 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 14 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 247.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.98ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 268.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:18,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 1344 Invalid, 95 Unknown, 0 Unchecked, 2.98ms Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 268.77ms Time] [2021-11-12 23:45:18,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-12 23:45:18,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2021-11-12 23:45:18,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 131 states have (on average 1.213740458015267) internal successors, (159), 135 states have internal predecessors, (159), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (62), 40 states have call predecessors, (62), 41 states have call successors, (62) [2021-11-12 23:45:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 263 transitions. [2021-11-12 23:45:18,114 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 263 transitions. Word has length 56 [2021-11-12 23:45:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:18,115 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 263 transitions. [2021-11-12 23:45:18,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-12 23:45:18,115 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 263 transitions. [2021-11-12 23:45:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-12 23:45:18,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:18,116 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:18,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:18,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:18,317 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:18,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:18,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1413566283, now seen corresponding path program 1 times [2021-11-12 23:45:18,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:18,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670306845] [2021-11-12 23:45:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:18,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:18,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:18,323 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:18,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:45:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:23,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:45:23,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:45:23,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:45:23,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:23,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670306845] [2021-11-12 23:45:23,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670306845] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:23,691 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:45:23,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 23:45:23,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930097529] [2021-11-12 23:45:23,692 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:23,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:45:23,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:45:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:45:23,693 INFO L87 Difference]: Start difference. First operand 188 states and 263 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-12 23:45:23,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:23,922 INFO L93 Difference]: Finished difference Result 262 states and 361 transitions. [2021-11-12 23:45:23,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:45:23,923 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 58 [2021-11-12 23:45:23,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:23,926 INFO L225 Difference]: With dead ends: 262 [2021-11-12 23:45:23,927 INFO L226 Difference]: Without dead ends: 198 [2021-11-12 23:45:23,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:45:23,929 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 3 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 143.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.44ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.45ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:23,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1626 Invalid, 36 Unknown, 0 Unchecked, 3.44ms Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 167.45ms Time] [2021-11-12 23:45:23,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-12 23:45:23,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192. [2021-11-12 23:45:23,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 135 states have (on average 1.2074074074074075) internal successors, (163), 139 states have internal predecessors, (163), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (62), 40 states have call predecessors, (62), 41 states have call successors, (62) [2021-11-12 23:45:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 267 transitions. [2021-11-12 23:45:23,952 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 267 transitions. Word has length 58 [2021-11-12 23:45:23,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:23,953 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 267 transitions. [2021-11-12 23:45:23,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-12 23:45:23,954 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 267 transitions. [2021-11-12 23:45:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 23:45:23,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:23,956 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:24,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:24,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:24,180 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:24,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:24,180 INFO L85 PathProgramCache]: Analyzing trace with hash -820752772, now seen corresponding path program 1 times [2021-11-12 23:45:24,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:24,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684226425] [2021-11-12 23:45:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:24,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:24,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:24,186 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:24,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:45:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:28,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:45:28,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:29,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 23:45:29,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 23:45:29,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:29,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684226425] [2021-11-12 23:45:29,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684226425] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:29,716 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:45:29,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-12 23:45:29,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759972106] [2021-11-12 23:45:29,717 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:29,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:45:29,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:29,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:45:29,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:45:29,718 INFO L87 Difference]: Start difference. First operand 192 states and 267 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-12 23:45:30,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:30,212 INFO L93 Difference]: Finished difference Result 355 states and 493 transitions. [2021-11-12 23:45:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:45:30,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 66 [2021-11-12 23:45:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:30,215 INFO L225 Difference]: With dead ends: 355 [2021-11-12 23:45:30,215 INFO L226 Difference]: Without dead ends: 192 [2021-11-12 23:45:30,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:45:30,218 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 123 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 377.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.39ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 432.74ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:30,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 793 Invalid, 115 Unknown, 0 Unchecked, 3.39ms Time], IncrementalHoareTripleChecker [59 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 432.74ms Time] [2021-11-12 23:45:30,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-12 23:45:30,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-11-12 23:45:30,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 135 states have (on average 1.2074074074074075) internal successors, (163), 139 states have internal predecessors, (163), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (60), 40 states have call predecessors, (60), 41 states have call successors, (60) [2021-11-12 23:45:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 265 transitions. [2021-11-12 23:45:30,238 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 265 transitions. Word has length 66 [2021-11-12 23:45:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:30,239 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 265 transitions. [2021-11-12 23:45:30,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-12 23:45:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 265 transitions. [2021-11-12 23:45:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-12 23:45:30,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:30,241 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:30,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:30,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:30,456 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:30,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:30,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1474350737, now seen corresponding path program 1 times [2021-11-12 23:45:30,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:30,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110872792] [2021-11-12 23:45:30,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:30,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:30,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:30,461 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:30,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:45:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:35,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:45:35,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:45:38,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:54,148 WARN L227 SmtUtils]: Spent 12.46s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:45:54,153 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-12 23:45:54,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771 [2021-11-12 23:55:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 23:55:26,520 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:26,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110872792] [2021-11-12 23:55:26,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110872792] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:55:26,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1641589767] [2021-11-12 23:55:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:26,521 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:55:26,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:55:26,530 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:55:26,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 23:55:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:27,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:55:27,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 23:55:28,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:29,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 23:55:29,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1641589767] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:55:29,447 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:55:29,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [12, 10] total 26 [2021-11-12 23:55:29,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830432111] [2021-11-12 23:55:29,448 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:29,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:55:29,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:29,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:55:29,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:55:29,449 INFO L87 Difference]: Start difference. First operand 192 states and 265 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-12 23:55:29,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:29,679 INFO L93 Difference]: Finished difference Result 246 states and 330 transitions. [2021-11-12 23:55:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:55:29,680 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2021-11-12 23:55:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:29,683 INFO L225 Difference]: With dead ends: 246 [2021-11-12 23:55:29,683 INFO L226 Difference]: Without dead ends: 190 [2021-11-12 23:55:29,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:55:29,684 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 3 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.27ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.03ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:29,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1439 Invalid, 32 Unknown, 0 Unchecked, 2.27ms Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 107.03ms Time] [2021-11-12 23:55:29,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-12 23:55:29,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 183. [2021-11-12 23:55:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 129 states have (on average 1.2093023255813953) internal successors, (156), 133 states have internal predecessors, (156), 39 states have call successors, (39), 12 states have call predecessors, (39), 14 states have return successors, (57), 37 states have call predecessors, (57), 38 states have call successors, (57) [2021-11-12 23:55:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 252 transitions. [2021-11-12 23:55:29,698 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 252 transitions. Word has length 72 [2021-11-12 23:55:29,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:29,698 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 252 transitions. [2021-11-12 23:55:29,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-12 23:55:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 252 transitions. [2021-11-12 23:55:29,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-12 23:55:29,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:29,700 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:55:29,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:29,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:30,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:30,106 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:55:30,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:30,107 INFO L85 PathProgramCache]: Analyzing trace with hash 912310329, now seen corresponding path program 1 times [2021-11-12 23:55:30,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:30,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122806824] [2021-11-12 23:55:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:30,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:30,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:30,111 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:30,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2df1dd-af25-4190-8cd3-593ed67956dd/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:55:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:34,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 1820 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-12 23:55:34,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:37,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:52,557 WARN L227 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:55:52,559 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-12 23:55:52,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771