./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_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_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/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_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/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_1695c278-2e4b-436c-bfc9-db498144c602/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 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:50:46,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:50:46,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:50:46,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:50:46,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:50:46,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:50:46,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:50:46,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:50:46,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:50:46,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:50:46,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:50:46,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:50:46,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:50:46,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:50:46,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:50:46,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:50:46,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:50:46,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:50:46,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:50:46,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:50:46,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:50:46,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:50:46,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:50:46,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:50:46,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:50:46,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:50:46,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:50:46,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:50:46,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:50:46,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:50:46,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:50:46,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:50:46,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:50:46,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:50:46,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:50:46,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:50:46,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:50:46,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:50:46,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:50:46,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:50:46,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:50:46,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:50:46,780 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:50:46,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:50:46,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:50:46,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:50:46,782 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:50:46,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:50:46,782 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:50:46,783 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:50:46,783 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:50:46,783 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:50:46,788 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:50:46,788 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:50:46,788 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:50:46,788 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:50:46,789 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:50:46,789 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:50:46,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:50:46,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:50:46,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:50:46,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:50:46,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:50:46,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:50:46,791 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:50:46,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:50:46,792 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:50:46,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:50:46,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:50:46,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:50:46,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:50:46,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:50:46,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:50:46,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:50:46,794 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:50:46,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:50:46,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:50:46,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:50:46,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:50:46,795 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_1695c278-2e4b-436c-bfc9-db498144c602/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be [2021-11-12 22:50:47,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:50:47,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:50:47,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:50:47,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:50:47,067 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:50:47,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2021-11-12 22:50:47,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/data/b28b71c3a/d46e7be0676f4a3ea181874f2087b1af/FLAG0513e7c09 [2021-11-12 22:50:48,144 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:50:48,144 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2021-11-12 22:50:48,203 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/data/b28b71c3a/d46e7be0676f4a3ea181874f2087b1af/FLAG0513e7c09 [2021-11-12 22:50:48,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/data/b28b71c3a/d46e7be0676f4a3ea181874f2087b1af [2021-11-12 22:50:48,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:50:48,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:50:48,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:50:48,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:50:48,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:50:48,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:50:48" (1/1) ... [2021-11-12 22:50:48,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa0b99a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:48, skipping insertion in model container [2021-11-12 22:50:48,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:50:48" (1/1) ... [2021-11-12 22:50:48,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:50:48,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:50:48,945 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_1695c278-2e4b-436c-bfc9-db498144c602/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4494,4507] [2021-11-12 22:50:48,953 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_1695c278-2e4b-436c-bfc9-db498144c602/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4554,4567] [2021-11-12 22:50:48,980 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:50:48,987 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:50:50,111 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:50,112 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:50,112 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:50,113 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:50,115 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:50,129 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:50,130 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:50,132 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:50,133 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:50,135 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:50,136 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:50,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:50,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:50,616 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:50:50,625 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:50:50,628 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:50:50,629 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:50:50,630 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:50:50,631 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:50:50,632 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:50:50,632 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:50:50,633 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:50:50,634 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:50:50,851 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:50:51,253 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:51,254 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:51,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:51,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:51,333 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:51,334 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:51,371 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:51,378 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:51,379 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:51,380 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:51,380 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:51,381 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:51,381 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:51,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:50:51,492 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 22:50:51,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@76da03bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:51, skipping insertion in model container [2021-11-12 22:50:51,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:50:51,493 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:50:51,495 INFO L158 Benchmark]: Toolchain (without parser) took 2963.03ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 71.1MB in the beginning and 75.0MB in the end (delta: -3.9MB). Peak memory consumption was 65.1MB. Max. memory is 16.1GB. [2021-11-12 22:50:51,496 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 65.6MB in the end (delta: 32.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:50:51,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2960.42ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 71.1MB in the beginning and 75.0MB in the end (delta: -3.9MB). Peak memory consumption was 65.1MB. Max. memory is 16.1GB. [2021-11-12 22:50:51,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 65.6MB in the end (delta: 32.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2960.42ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 71.1MB in the beginning and 75.0MB in the end (delta: -3.9MB). Peak memory consumption was 65.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7051]: 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_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/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_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/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_1695c278-2e4b-436c-bfc9-db498144c602/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 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:50:53,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:50:53,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:50:53,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:50:53,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:50:53,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:50:53,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:50:53,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:50:53,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:50:53,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:50:53,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:50:53,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:50:53,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:50:53,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:50:53,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:50:53,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:50:53,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:50:53,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:50:53,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:50:53,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:50:53,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:50:53,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:50:53,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:50:53,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:50:53,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:50:53,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:50:53,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:50:53,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:50:53,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:50:53,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:50:53,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:50:53,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:50:53,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:50:53,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:50:53,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:50:53,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:50:53,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:50:53,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:50:53,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:50:53,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:50:53,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:50:53,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:50:53,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:50:53,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:50:53,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:50:53,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:50:53,961 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:50:53,962 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:50:53,962 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:50:53,962 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:50:53,962 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:50:53,963 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:50:53,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:50:53,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:50:53,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:50:53,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:50:53,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:50:53,965 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:50:53,965 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:50:53,965 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:50:53,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:50:53,966 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:50:53,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:50:53,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:50:53,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:50:53,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:50:53,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:50:53,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:50:53,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:50:53,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:50:53,968 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:50:53,968 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:50:53,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:50:53,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:50:53,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:50:53,969 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_1695c278-2e4b-436c-bfc9-db498144c602/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be [2021-11-12 22:50:54,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:50:54,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:50:54,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:50:54,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:50:54,384 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:50:54,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2021-11-12 22:50:54,453 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/data/309b5c6c0/a3a32b311f234ce49ba9f704bc02d065/FLAG1f3a13ebf [2021-11-12 22:50:55,460 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:50:55,460 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2021-11-12 22:50:55,502 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/data/309b5c6c0/a3a32b311f234ce49ba9f704bc02d065/FLAG1f3a13ebf [2021-11-12 22:50:55,820 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/data/309b5c6c0/a3a32b311f234ce49ba9f704bc02d065 [2021-11-12 22:50:55,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:50:55,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:50:55,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:50:55,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:50:55,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:50:55,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:50:55" (1/1) ... [2021-11-12 22:50:55,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5401e490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:55, skipping insertion in model container [2021-11-12 22:50:55,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:50:55" (1/1) ... [2021-11-12 22:50:55,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:50:56,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:50:56,410 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4494,4507] [2021-11-12 22:50:56,421 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_1695c278-2e4b-436c-bfc9-db498144c602/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4554,4567] [2021-11-12 22:50:56,450 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:50:56,458 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:50:57,936 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:57,939 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:57,939 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:57,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:57,943 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:57,968 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:57,969 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:57,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:57,972 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:57,974 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:57,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:57,977 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:57,977 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:58,571 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:50:58,572 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:50:58,573 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:50:58,575 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:50:58,577 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:50:58,578 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:50:58,579 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:50:58,579 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:50:58,580 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:50:58,581 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:50:58,828 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:50:59,335 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,336 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,372 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,383 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,384 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,407 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,408 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,409 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,410 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,410 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,411 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,411 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:50:59,527 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:50:59,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:50:59,593 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_1695c278-2e4b-436c-bfc9-db498144c602/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4494,4507] [2021-11-12 22:50:59,594 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4554,4567] [2021-11-12 22:50:59,595 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:50:59,595 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:50:59,626 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,626 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,627 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,627 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,628 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,634 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,635 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,636 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,636 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,637 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,638 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,638 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,639 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,672 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:50:59,673 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:50:59,674 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:50:59,674 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:50:59,675 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:50:59,676 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:50:59,676 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:50:59,677 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:50:59,677 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:50:59,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:50:59,699 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:50:59,797 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,798 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,805 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,808 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,809 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,816 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,817 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,848 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:50:59,888 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:50:59,900 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_1695c278-2e4b-436c-bfc9-db498144c602/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4494,4507] [2021-11-12 22:50:59,901 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_1695c278-2e4b-436c-bfc9-db498144c602/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4554,4567] [2021-11-12 22:50:59,902 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:50:59,903 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:50:59,929 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,936 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,937 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,937 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,938 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,938 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,939 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,939 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,940 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:50:59,967 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:50:59,967 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:50:59,968 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:50:59,968 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:50:59,969 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:50:59,969 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:50:59,970 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:50:59,970 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:50:59,971 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:50:59,971 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:50:59,989 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:51:00,115 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:00,116 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:00,130 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:00,131 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:00,135 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:00,136 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:00,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:00,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:00,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:00,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:00,154 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:00,154 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:00,155 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:51:00,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:51:00,602 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:51:00,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:00 WrapperNode [2021-11-12 22:51:00,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:51:00,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:51:00,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:51:00,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:51:00,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:00" (1/1) ... [2021-11-12 22:51:00,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:00" (1/1) ... [2021-11-12 22:51:00,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:51:00,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:51:00,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:51:00,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:51:00,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:00" (1/1) ... [2021-11-12 22:51:00,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:00" (1/1) ... [2021-11-12 22:51:00,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:00" (1/1) ... [2021-11-12 22:51:00,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:00" (1/1) ... [2021-11-12 22:51:00,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:00" (1/1) ... [2021-11-12 22:51:00,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:00" (1/1) ... [2021-11-12 22:51:01,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:00" (1/1) ... [2021-11-12 22:51:01,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:51:01,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:51:01,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:51:01,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:51:01,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:00" (1/1) ... [2021-11-12 22:51:01,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:51:01,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:51:01,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:51:01,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:51:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2021-11-12 22:51:01,126 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2021-11-12 22:51:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-12 22:51:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 22:51:01,134 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 22:51:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 22:51:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 22:51:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:51:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:51:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-12 22:51:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-12 22:51:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_clear [2021-11-12 22:51:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_clear [2021-11-12 22:51:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:51:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:51:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:51:01,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:51:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 22:51:01,136 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 22:51:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-12 22:51:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-12 22:51:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-12 22:51:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:51:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-12 22:51:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-12 22:51:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-12 22:51:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:51:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 22:51:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 22:51:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-12 22:51:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-12 22:51:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-12 22:51:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-12 22:51:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:51:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:51:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:51:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-12 22:51:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-12 22:51:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:51:01,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:51:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:51:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:51:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:51:01,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:51:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:51:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-12 22:51:01,141 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-12 22:51:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:51:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-12 22:51:01,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-12 22:51:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-12 22:51:01,141 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-12 22:51:14,568 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:51:14,568 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:51:14,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:51:14 BoogieIcfgContainer [2021-11-12 22:51:14,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:51:14,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:51:14,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:51:14,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:51:14,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:50:55" (1/3) ... [2021-11-12 22:51:14,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8f760a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:51:14, skipping insertion in model container [2021-11-12 22:51:14,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:00" (2/3) ... [2021-11-12 22:51:14,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8f760a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:51:14, skipping insertion in model container [2021-11-12 22:51:14,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:51:14" (3/3) ... [2021-11-12 22:51:14,583 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clear_harness.i [2021-11-12 22:51:14,590 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:51:14,590 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:51:14,666 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:51:14,673 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 22:51:14,673 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:51:14,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 107 states have (on average 1.205607476635514) internal successors, (129), 108 states have internal predecessors, (129), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-12 22:51:14,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-12 22:51:14,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:14,723 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:14,724 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:51:14,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:14,730 INFO L85 PathProgramCache]: Analyzing trace with hash 156519303, now seen corresponding path program 1 times [2021-11-12 22:51:14,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:14,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244787087] [2021-11-12 22:51:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:14,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:14,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:14,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:14,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:51:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:19,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:51:19,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-12 22:51:19,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-12 22:51:20,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:20,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244787087] [2021-11-12 22:51:20,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244787087] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:51:20,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:51:20,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 22:51:20,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703692734] [2021-11-12 22:51:20,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:20,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:51:20,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:20,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:51:20,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:51:20,066 INFO L87 Difference]: Start difference. First operand has 168 states, 107 states have (on average 1.205607476635514) internal successors, (129), 108 states have internal predecessors, (129), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 22:51:20,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:20,111 INFO L93 Difference]: Finished difference Result 331 states and 435 transitions. [2021-11-12 22:51:20,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:51:20,113 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 139 [2021-11-12 22:51:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:20,128 INFO L225 Difference]: With dead ends: 331 [2021-11-12 22:51:20,131 INFO L226 Difference]: Without dead ends: 161 [2021-11-12 22:51:20,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 276 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 22:51:20,148 INFO L933 BasicCegarLoop]: 207 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, 207 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:20,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 2.51ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:51:20,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-12 22:51:20,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-11-12 22:51:20,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 102 states have internal predecessors, (118), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-12 22:51:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 199 transitions. [2021-11-12 22:51:20,244 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 199 transitions. Word has length 139 [2021-11-12 22:51:20,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:20,247 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 199 transitions. [2021-11-12 22:51:20,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 22:51:20,248 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 199 transitions. [2021-11-12 22:51:20,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-12 22:51:20,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:20,261 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:20,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:20,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:20,476 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:51:20,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:20,477 INFO L85 PathProgramCache]: Analyzing trace with hash -318631745, now seen corresponding path program 1 times [2021-11-12 22:51:20,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:20,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419653856] [2021-11-12 22:51:20,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:20,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:20,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:20,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:20,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:51:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:24,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:51:24,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-12 22:51:25,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-11-12 22:51:26,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:26,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419653856] [2021-11-12 22:51:26,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419653856] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:26,139 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:26,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 22:51:26,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862054777] [2021-11-12 22:51:26,140 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:26,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:51:26,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:26,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:51:26,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:51:26,144 INFO L87 Difference]: Start difference. First operand 161 states and 199 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 22:51:26,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:26,291 INFO L93 Difference]: Finished difference Result 286 states and 354 transitions. [2021-11-12 22:51:26,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:51:26,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 139 [2021-11-12 22:51:26,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:26,299 INFO L225 Difference]: With dead ends: 286 [2021-11-12 22:51:26,300 INFO L226 Difference]: Without dead ends: 165 [2021-11-12 22:51:26,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:51:26,305 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 2 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.89ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:26,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 784 Invalid, 11 Unknown, 0 Unchecked, 11.68ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 56.89ms Time] [2021-11-12 22:51:26,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-12 22:51:26,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-11-12 22:51:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 105 states have internal predecessors, (121), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2021-11-12 22:51:26,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 203 transitions. [2021-11-12 22:51:26,342 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 203 transitions. Word has length 139 [2021-11-12 22:51:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:26,345 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 203 transitions. [2021-11-12 22:51:26,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 22:51:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 203 transitions. [2021-11-12 22:51:26,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-12 22:51:26,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:26,360 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:26,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 22:51:26,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:26,577 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:51:26,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:26,578 INFO L85 PathProgramCache]: Analyzing trace with hash -18073417, now seen corresponding path program 1 times [2021-11-12 22:51:26,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:26,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31307322] [2021-11-12 22:51:26,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:26,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:26,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:26,582 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:26,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:51:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:30,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1759 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:51:30,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-12 22:51:31,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-12 22:51:32,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:32,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31307322] [2021-11-12 22:51:32,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31307322] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:51:32,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:51:32,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 22:51:32,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057605492] [2021-11-12 22:51:32,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:32,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:51:32,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:32,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:51:32,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:51:32,077 INFO L87 Difference]: Start difference. First operand 165 states and 203 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 22:51:32,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:32,406 INFO L93 Difference]: Finished difference Result 286 states and 353 transitions. [2021-11-12 22:51:32,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:51:32,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 145 [2021-11-12 22:51:32,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:32,410 INFO L225 Difference]: With dead ends: 286 [2021-11-12 22:51:32,411 INFO L226 Difference]: Without dead ends: 165 [2021-11-12 22:51:32,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:51:32,413 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 2 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 246.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.20ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 272.14ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:32,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 904 Invalid, 85 Unknown, 0 Unchecked, 8.20ms Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 272.14ms Time] [2021-11-12 22:51:32,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-12 22:51:32,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2021-11-12 22:51:32,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 102 states have internal predecessors, (116), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-12 22:51:32,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 197 transitions. [2021-11-12 22:51:32,431 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 197 transitions. Word has length 145 [2021-11-12 22:51:32,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:32,432 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 197 transitions. [2021-11-12 22:51:32,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 22:51:32,433 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 197 transitions. [2021-11-12 22:51:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-12 22:51:32,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:32,440 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:32,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:32,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:32,641 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:51:32,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:32,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2138847562, now seen corresponding path program 1 times [2021-11-12 22:51:32,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:32,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761233852] [2021-11-12 22:51:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:32,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:32,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:32,646 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:32,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:51:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:36,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1806 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:51:36,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:37,461 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 16 treesize of output 12 [2021-11-12 22:51:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-12 22:51:38,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:39,652 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 30 treesize of output 26 [2021-11-12 22:51:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-12 22:51:40,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:40,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761233852] [2021-11-12 22:51:40,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761233852] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:51:40,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:51:40,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2021-11-12 22:51:40,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131875560] [2021-11-12 22:51:40,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:40,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:51:40,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:40,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:51:40,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:51:40,062 INFO L87 Difference]: Start difference. First operand 161 states and 197 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 9 states have internal predecessors, (74), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-12 22:51:40,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:40,799 INFO L93 Difference]: Finished difference Result 276 states and 340 transitions. [2021-11-12 22:51:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 22:51:40,801 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 9 states have internal predecessors, (74), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 150 [2021-11-12 22:51:40,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:40,803 INFO L225 Difference]: With dead ends: 276 [2021-11-12 22:51:40,804 INFO L226 Difference]: Without dead ends: 165 [2021-11-12 22:51:40,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:51:40,805 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 24 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 591.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.04ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 621.69ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:40,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 882 Invalid, 69 Unknown, 0 Unchecked, 7.04ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 34 Unchecked, 621.69ms Time] [2021-11-12 22:51:40,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-12 22:51:40,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-11-12 22:51:40,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 105 states have (on average 1.1523809523809523) internal successors, (121), 105 states have internal predecessors, (121), 41 states have call successors, (41), 19 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-12 22:51:40,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 202 transitions. [2021-11-12 22:51:40,824 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 202 transitions. Word has length 150 [2021-11-12 22:51:40,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:40,825 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 202 transitions. [2021-11-12 22:51:40,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 9 states have internal predecessors, (74), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-12 22:51:40,826 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 202 transitions. [2021-11-12 22:51:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-12 22:51:40,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:40,829 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:40,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:41,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:41,044 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:51:41,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:41,045 INFO L85 PathProgramCache]: Analyzing trace with hash -589361784, now seen corresponding path program 1 times [2021-11-12 22:51:41,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:41,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455945324] [2021-11-12 22:51:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:41,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:41,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:41,051 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:41,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:51:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:45,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1803 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:51:45,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-12 22:51:46,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-12 22:51:46,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:46,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455945324] [2021-11-12 22:51:46,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455945324] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:51:46,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:51:46,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:51:46,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398703350] [2021-11-12 22:51:46,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:46,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:51:46,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:46,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:51:46,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:51:46,978 INFO L87 Difference]: Start difference. First operand 165 states and 202 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:51:47,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:47,129 INFO L93 Difference]: Finished difference Result 280 states and 348 transitions. [2021-11-12 22:51:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:51:47,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 150 [2021-11-12 22:51:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:47,137 INFO L225 Difference]: With dead ends: 280 [2021-11-12 22:51:47,137 INFO L226 Difference]: Without dead ends: 172 [2021-11-12 22:51:47,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 295 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 22:51:47,139 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 27 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.29ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.16ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:47,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 539 Invalid, 26 Unknown, 0 Unchecked, 3.29ms Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 131.16ms Time] [2021-11-12 22:51:47,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-12 22:51:47,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-11-12 22:51:47,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 111 states have internal predecessors, (127), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2021-11-12 22:51:47,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 212 transitions. [2021-11-12 22:51:47,180 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 212 transitions. Word has length 150 [2021-11-12 22:51:47,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:47,181 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 212 transitions. [2021-11-12 22:51:47,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:51:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 212 transitions. [2021-11-12 22:51:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-12 22:51:47,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:47,187 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:47,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:47,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:47,412 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:51:47,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:47,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2070509270, now seen corresponding path program 1 times [2021-11-12 22:51:47,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:47,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242979604] [2021-11-12 22:51:47,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:47,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:47,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:47,420 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:47,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:51:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:51,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 1820 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:51:51,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:52,354 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 16 treesize of output 12 [2021-11-12 22:51:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-12 22:51:53,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:54,918 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 30 treesize of output 26 [2021-11-12 22:51:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-12 22:51:55,312 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:55,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242979604] [2021-11-12 22:51:55,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242979604] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:51:55,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:51:55,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 17 [2021-11-12 22:51:55,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077910800] [2021-11-12 22:51:55,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:55,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:51:55,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:55,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:51:55,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:51:55,315 INFO L87 Difference]: Start difference. First operand 172 states and 212 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-12 22:51:57,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:51:58,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:58,707 INFO L93 Difference]: Finished difference Result 306 states and 378 transitions. [2021-11-12 22:51:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:51:58,708 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 156 [2021-11-12 22:51:58,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:58,710 INFO L225 Difference]: With dead ends: 306 [2021-11-12 22:51:58,711 INFO L226 Difference]: Without dead ends: 175 [2021-11-12 22:51:58,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:51:58,713 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 37 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3137.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.19ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 3262.77ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:58,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1070 Invalid, 163 Unknown, 0 Unchecked, 6.19ms Time], IncrementalHoareTripleChecker [8 Valid, 71 Invalid, 1 Unknown, 83 Unchecked, 3262.77ms Time] [2021-11-12 22:51:58,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-12 22:51:58,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-12 22:51:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 112 states have (on average 1.1428571428571428) internal successors, (128), 113 states have internal predecessors, (128), 43 states have call successors, (43), 20 states have call predecessors, (43), 19 states have return successors, (44), 41 states have call predecessors, (44), 42 states have call successors, (44) [2021-11-12 22:51:58,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 215 transitions. [2021-11-12 22:51:58,730 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 215 transitions. Word has length 156 [2021-11-12 22:51:58,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:58,731 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 215 transitions. [2021-11-12 22:51:58,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-12 22:51:58,732 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 215 transitions. [2021-11-12 22:51:58,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-12 22:51:58,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:58,735 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:58,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 22:51:58,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:58,960 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:51:58,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:58,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1464465370, now seen corresponding path program 1 times [2021-11-12 22:51:58,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:58,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839543515] [2021-11-12 22:51:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:58,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:58,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:58,965 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:58,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:52:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:03,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:52:03,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-12 22:52:03,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-12 22:52:04,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:04,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839543515] [2021-11-12 22:52:04,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839543515] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:52:04,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:52:04,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-12 22:52:04,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954892708] [2021-11-12 22:52:04,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:04,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:52:04,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:04,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:52:04,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:52:04,415 INFO L87 Difference]: Start difference. First operand 175 states and 215 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-12 22:52:04,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:04,751 INFO L93 Difference]: Finished difference Result 271 states and 333 transitions. [2021-11-12 22:52:04,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:52:04,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 161 [2021-11-12 22:52:04,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:04,755 INFO L225 Difference]: With dead ends: 271 [2021-11-12 22:52:04,755 INFO L226 Difference]: Without dead ends: 181 [2021-11-12 22:52:04,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:52:04,757 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 2 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 255.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 291.66ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:04,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1082 Invalid, 104 Unknown, 0 Unchecked, 6.72ms Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 291.66ms Time] [2021-11-12 22:52:04,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-12 22:52:04,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-12 22:52:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 116 states have (on average 1.1379310344827587) internal successors, (132), 119 states have internal predecessors, (132), 43 states have call successors, (43), 20 states have call predecessors, (43), 21 states have return successors, (47), 41 states have call predecessors, (47), 42 states have call successors, (47) [2021-11-12 22:52:04,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 222 transitions. [2021-11-12 22:52:04,775 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 222 transitions. Word has length 161 [2021-11-12 22:52:04,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:04,776 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 222 transitions. [2021-11-12 22:52:04,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-12 22:52:04,776 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 222 transitions. [2021-11-12 22:52:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-12 22:52:04,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:04,780 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:04,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:05,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:05,008 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:05,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash 954368422, now seen corresponding path program 1 times [2021-11-12 22:52:05,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:05,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178620876] [2021-11-12 22:52:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:05,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:05,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:05,013 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:05,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:52:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:09,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 22:52:09,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-12 22:52:10,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-12 22:52:12,221 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:12,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178620876] [2021-11-12 22:52:12,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178620876] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:12,221 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:12,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2021-11-12 22:52:12,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46342561] [2021-11-12 22:52:12,222 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:12,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:52:12,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:12,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:52:12,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:52:12,224 INFO L87 Difference]: Start difference. First operand 181 states and 222 transitions. Second operand has 13 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (29), 2 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-12 22:52:14,485 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 22:52:16,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:52:18,506 WARN L515 Checker$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 22:52:20,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:20,758 INFO L93 Difference]: Finished difference Result 283 states and 350 transitions. [2021-11-12 22:52:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:52:20,761 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (29), 2 states have call predecessors, (29), 4 states have call successors, (29) Word has length 167 [2021-11-12 22:52:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:20,763 INFO L225 Difference]: With dead ends: 283 [2021-11-12 22:52:20,763 INFO L226 Difference]: Without dead ends: 183 [2021-11-12 22:52:20,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:52:20,765 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 18 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7547.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.37ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 7745.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:20,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 1606 Invalid, 199 Unknown, 0 Unchecked, 6.37ms Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 3 Unknown, 99 Unchecked, 7745.00ms Time] [2021-11-12 22:52:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-12 22:52:20,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 178. [2021-11-12 22:52:20,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 114 states have (on average 1.131578947368421) internal successors, (129), 117 states have internal predecessors, (129), 42 states have call successors, (42), 19 states have call predecessors, (42), 21 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-12 22:52:20,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 217 transitions. [2021-11-12 22:52:20,781 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 217 transitions. Word has length 167 [2021-11-12 22:52:20,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:20,782 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 217 transitions. [2021-11-12 22:52:20,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (29), 2 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-12 22:52:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 217 transitions. [2021-11-12 22:52:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-12 22:52:20,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:20,785 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:20,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:21,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:21,012 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:21,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:21,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2033193032, now seen corresponding path program 1 times [2021-11-12 22:52:21,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:21,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336737241] [2021-11-12 22:52:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:21,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:21,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:21,019 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:21,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:52:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:25,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:52:25,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-12 22:52:25,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 22:52:25,922 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:25,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336737241] [2021-11-12 22:52:25,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336737241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:25,922 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:25,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:52:25,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983181309] [2021-11-12 22:52:25,922 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:25,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:52:25,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:25,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:52:25,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:52:25,924 INFO L87 Difference]: Start difference. First operand 178 states and 217 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 22:52:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:25,947 INFO L93 Difference]: Finished difference Result 256 states and 307 transitions. [2021-11-12 22:52:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:52:25,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 172 [2021-11-12 22:52:25,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:25,963 INFO L225 Difference]: With dead ends: 256 [2021-11-12 22:52:25,963 INFO L226 Difference]: Without dead ends: 179 [2021-11-12 22:52:25,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:52:25,964 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.91ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:25,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 386 Invalid, 5 Unknown, 0 Unchecked, 1.00ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 13.91ms Time] [2021-11-12 22:52:25,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-12 22:52:25,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-11-12 22:52:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 115 states have (on average 1.1304347826086956) internal successors, (130), 118 states have internal predecessors, (130), 42 states have call successors, (42), 19 states have call predecessors, (42), 21 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-12 22:52:25,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 218 transitions. [2021-11-12 22:52:25,993 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 218 transitions. Word has length 172 [2021-11-12 22:52:25,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:25,995 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 218 transitions. [2021-11-12 22:52:25,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 22:52:25,996 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 218 transitions. [2021-11-12 22:52:25,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-12 22:52:26,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:26,000 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:26,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:26,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:26,201 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:26,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1012124678, now seen corresponding path program 1 times [2021-11-12 22:52:26,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:26,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184377523] [2021-11-12 22:52:26,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:26,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:26,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:26,205 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:26,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:52:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:30,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:52:30,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 22:52:30,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 22:52:31,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:31,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184377523] [2021-11-12 22:52:31,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184377523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:31,261 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:31,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2021-11-12 22:52:31,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110612491] [2021-11-12 22:52:31,261 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:31,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:52:31,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:31,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:52:31,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:52:31,265 INFO L87 Difference]: Start difference. First operand 179 states and 218 transitions. Second operand has 10 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-12 22:52:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:31,584 INFO L93 Difference]: Finished difference Result 185 states and 223 transitions. [2021-11-12 22:52:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:52:31,585 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 172 [2021-11-12 22:52:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:31,587 INFO L225 Difference]: With dead ends: 185 [2021-11-12 22:52:31,588 INFO L226 Difference]: Without dead ends: 183 [2021-11-12 22:52:31,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:52:31,589 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 26 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 173.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.68ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:31,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 1666 Invalid, 70 Unknown, 0 Unchecked, 4.68ms Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 193.00ms Time] [2021-11-12 22:52:31,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-12 22:52:31,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-11-12 22:52:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 118 states have (on average 1.1271186440677967) internal successors, (133), 121 states have internal predecessors, (133), 42 states have call successors, (42), 20 states have call predecessors, (42), 22 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-12 22:52:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 221 transitions. [2021-11-12 22:52:31,605 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 221 transitions. Word has length 172 [2021-11-12 22:52:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:31,606 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 221 transitions. [2021-11-12 22:52:31,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-12 22:52:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 221 transitions. [2021-11-12 22:52:31,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-12 22:52:31,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:31,608 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:31,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:31,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:31,824 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:31,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:31,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1671447156, now seen corresponding path program 1 times [2021-11-12 22:52:31,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:31,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311202533] [2021-11-12 22:52:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:31,828 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:31,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:31,828 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:31,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:52:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:36,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 1880 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:52:36,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 22:52:37,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 22:52:46,121 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:46,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311202533] [2021-11-12 22:52:46,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311202533] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:46,122 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:46,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-12 22:52:46,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964146729] [2021-11-12 22:52:46,122 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:46,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:52:46,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:46,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:52:46,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=199, Unknown=4, NotChecked=0, Total=240 [2021-11-12 22:52:46,124 INFO L87 Difference]: Start difference. First operand 183 states and 221 transitions. Second operand has 16 states, 12 states have (on average 6.416666666666667) internal successors, (77), 10 states have internal predecessors, (77), 7 states have call successors, (35), 7 states have call predecessors, (35), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-12 22:52:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:46,356 INFO L93 Difference]: Finished difference Result 189 states and 226 transitions. [2021-11-12 22:52:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:52:46,357 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 6.416666666666667) internal successors, (77), 10 states have internal predecessors, (77), 7 states have call successors, (35), 7 states have call predecessors, (35), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 178 [2021-11-12 22:52:46,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:46,360 INFO L225 Difference]: With dead ends: 189 [2021-11-12 22:52:46,360 INFO L226 Difference]: Without dead ends: 187 [2021-11-12 22:52:46,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=43, Invalid=225, Unknown=4, NotChecked=0, Total=272 [2021-11-12 22:52:46,361 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 9 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.38ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 73.18ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:46,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1911 Invalid, 37 Unknown, 0 Unchecked, 4.38ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 14 Unchecked, 73.18ms Time] [2021-11-12 22:52:46,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-12 22:52:46,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-11-12 22:52:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 121 states have (on average 1.1239669421487604) internal successors, (136), 124 states have internal predecessors, (136), 42 states have call successors, (42), 21 states have call predecessors, (42), 23 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-12 22:52:46,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 224 transitions. [2021-11-12 22:52:46,377 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 224 transitions. Word has length 178 [2021-11-12 22:52:46,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:46,378 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 224 transitions. [2021-11-12 22:52:46,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 6.416666666666667) internal successors, (77), 10 states have internal predecessors, (77), 7 states have call successors, (35), 7 states have call predecessors, (35), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-12 22:52:46,379 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 224 transitions. [2021-11-12 22:52:46,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-12 22:52:46,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:46,382 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:46,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:46,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:46,596 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:46,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:46,597 INFO L85 PathProgramCache]: Analyzing trace with hash -654909197, now seen corresponding path program 1 times [2021-11-12 22:52:46,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:46,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637079105] [2021-11-12 22:52:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:46,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:46,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:46,603 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:46,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1695c278-2e4b-436c-bfc9-db498144c602/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:54:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:54:02,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 1920 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-12 22:54:02,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:54:04,980 INFO L354 Elim1Store]: treesize reduction 1099, result has 7.0 percent of original size [2021-11-12 22:54:04,981 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 7 case distinctions, treesize of input 70 treesize of output 95 [2021-11-12 22:54:09,623 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:54:09,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 66 [2021-11-12 22:54:11,015 INFO L354 Elim1Store]: treesize reduction 1099, result has 7.0 percent of original size [2021-11-12 22:54:11,016 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 7 case distinctions, treesize of input 70 treesize of output 95 [2021-11-12 22:54:16,235 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:54:16,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 437 treesize of output 373 [2021-11-12 22:54:18,012 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 113 proven. 10 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-12 22:54:18,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:54:28,904 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 170 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 22:54:29,352 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 22212 treesize of output 21414 [2021-11-12 22:54:29,361 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 21414 treesize of output 21400