./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba --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 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:13:10,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:13:10,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:13:10,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:13:10,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:13:10,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:13:10,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:13:10,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:13:10,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:13:10,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:13:10,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:13:10,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:13:10,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:13:10,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:13:10,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:13:10,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:13:10,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:13:10,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:13:10,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:13:10,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:13:10,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:13:10,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:13:10,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:13:10,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:13:10,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:13:10,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:13:10,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:13:10,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:13:10,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:13:10,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:13:10,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:13:10,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:13:10,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:13:10,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:13:10,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:13:10,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:13:10,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:13:10,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:13:10,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:13:10,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:13:10,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:13:10,413 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:13:10,462 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:13:10,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:13:10,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:13:10,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:13:10,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:13:10,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:13:10,465 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:13:10,465 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:13:10,466 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:13:10,466 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:13:10,467 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:13:10,468 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:13:10,468 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:13:10,468 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:13:10,468 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:13:10,469 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:13:10,469 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:13:10,469 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:13:10,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:13:10,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:13:10,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:13:10,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:13:10,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:13:10,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:13:10,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:13:10,472 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:13:10,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:13:10,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:13:10,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:13:10,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:13:10,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:13:10,474 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:13:10,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:13:10,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:13:10,475 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:13:10,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:13:10,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:13:10,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:13:10,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2022-11-22 02:13:10,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:13:10,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:13:10,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:13:10,880 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:13:10,881 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:13:10,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-11-22 02:13:14,241 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:13:14,732 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:13:14,733 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-11-22 02:13:14,763 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/data/50f862f28/f0c390a7a34f42dd918ec19faa851814/FLAGc87643e75 [2022-11-22 02:13:14,788 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/data/50f862f28/f0c390a7a34f42dd918ec19faa851814 [2022-11-22 02:13:14,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:13:14,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:13:14,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:13:14,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:13:14,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:13:14,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:13:14" (1/1) ... [2022-11-22 02:13:14,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5690cf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:14, skipping insertion in model container [2022-11-22 02:13:14,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:13:14" (1/1) ... [2022-11-22 02:13:14,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:13:14,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:13:15,289 WARN L237 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_92eefe6b-d206-43ba-bc44-d49c4ffa671f/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4493,4506] [2022-11-22 02:13:15,302 WARN L237 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_92eefe6b-d206-43ba-bc44-d49c4ffa671f/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4553,4566] [2022-11-22 02:13:16,107 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,108 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,109 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,109 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,111 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,126 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,131 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,133 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,134 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,136 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,142 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,143 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,143 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,362 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:13:16,363 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:13:16,365 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:13:16,367 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:13:16,369 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:13:16,370 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:13:16,371 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:13:16,372 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:13:16,373 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:13:16,374 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:13:16,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:13:16,483 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:13:16,499 WARN L237 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_92eefe6b-d206-43ba-bc44-d49c4ffa671f/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4493,4506] [2022-11-22 02:13:16,499 WARN L237 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_92eefe6b-d206-43ba-bc44-d49c4ffa671f/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4553,4566] [2022-11-22 02:13:16,609 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,621 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,622 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,623 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,624 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,645 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,645 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,649 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,649 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,652 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,653 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,655 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,655 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:16,690 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:13:16,692 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:13:16,693 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:13:16,695 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:13:16,696 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:13:16,697 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:13:16,698 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:13:16,699 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:13:16,700 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:13:16,700 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:13:16,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:13:16,992 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:13:16,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:16 WrapperNode [2022-11-22 02:13:16,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:13:16,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:13:16,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:13:16,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:13:17,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:16" (1/1) ... [2022-11-22 02:13:17,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:16" (1/1) ... [2022-11-22 02:13:17,133 INFO L138 Inliner]: procedures = 592, calls = 624, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 122 [2022-11-22 02:13:17,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:13:17,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:13:17,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:13:17,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:13:17,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:16" (1/1) ... [2022-11-22 02:13:17,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:16" (1/1) ... [2022-11-22 02:13:17,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:16" (1/1) ... [2022-11-22 02:13:17,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:16" (1/1) ... [2022-11-22 02:13:17,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:16" (1/1) ... [2022-11-22 02:13:17,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:16" (1/1) ... [2022-11-22 02:13:17,198 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:16" (1/1) ... [2022-11-22 02:13:17,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:16" (1/1) ... [2022-11-22 02:13:17,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:13:17,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:13:17,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:13:17,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:13:17,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:16" (1/1) ... [2022-11-22 02:13:17,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:13:17,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:13:17,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:13:17,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:13:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:13:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:13:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 02:13:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 02:13:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:13:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:13:17,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:13:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 02:13:17,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 02:13:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:13:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2022-11-22 02:13:17,316 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2022-11-22 02:13:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-22 02:13:17,316 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-22 02:13:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:13:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:13:17,642 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:13:17,644 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:13:18,083 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:13:18,402 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:13:18,403 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:13:18,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:18 BoogieIcfgContainer [2022-11-22 02:13:18,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:13:18,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:13:18,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:13:18,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:13:18,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:13:14" (1/3) ... [2022-11-22 02:13:18,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b0638b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:13:18, skipping insertion in model container [2022-11-22 02:13:18,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:16" (2/3) ... [2022-11-22 02:13:18,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b0638b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:13:18, skipping insertion in model container [2022-11-22 02:13:18,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:18" (3/3) ... [2022-11-22 02:13:18,421 INFO L112 eAbstractionObserver]: Analyzing ICFG memset_using_uint64_harness.i [2022-11-22 02:13:18,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:13:18,442 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:13:18,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:13:18,519 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4895efc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:13:18,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:13:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-22 02:13:18,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 02:13:18,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:18,534 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:18,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:18,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:18,544 INFO L85 PathProgramCache]: Analyzing trace with hash 727452986, now seen corresponding path program 1 times [2022-11-22 02:13:18,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:18,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661058744] [2022-11-22 02:13:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:18,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:13:20,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:20,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661058744] [2022-11-22 02:13:20,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661058744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:20,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:20,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:13:20,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590575469] [2022-11-22 02:13:20,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:20,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:13:20,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:13:20,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:13:20,344 INFO L87 Difference]: Start difference. First operand has 42 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 02:13:22,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:13:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:22,602 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2022-11-22 02:13:22,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:13:22,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2022-11-22 02:13:22,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:22,614 INFO L225 Difference]: With dead ends: 77 [2022-11-22 02:13:22,616 INFO L226 Difference]: Without dead ends: 41 [2022-11-22 02:13:22,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:13:22,625 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 23 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:22,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 151 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-22 02:13:22,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-22 02:13:22,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-22 02:13:22,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-22 02:13:22,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2022-11-22 02:13:22,685 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 19 [2022-11-22 02:13:22,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:22,687 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2022-11-22 02:13:22,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 02:13:22,688 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2022-11-22 02:13:22,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-22 02:13:22,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:22,690 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-22 02:13:22,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:13:22,691 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:22,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1509833810, now seen corresponding path program 1 times [2022-11-22 02:13:22,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:22,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490682477] [2022-11-22 02:13:22,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:22,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 02:13:23,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:23,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490682477] [2022-11-22 02:13:23,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490682477] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:13:23,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034057798] [2022-11-22 02:13:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:23,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:23,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:13:23,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:13:23,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:13:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:24,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-22 02:13:24,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:13:24,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:13:24,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034057798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:24,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:13:24,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-11-22 02:13:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661879951] [2022-11-22 02:13:24,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:24,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:13:24,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:24,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:13:24,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:13:24,170 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-22 02:13:26,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:13:26,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:26,336 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2022-11-22 02:13:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:13:26,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 33 [2022-11-22 02:13:26,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:26,338 INFO L225 Difference]: With dead ends: 74 [2022-11-22 02:13:26,338 INFO L226 Difference]: Without dead ends: 49 [2022-11-22 02:13:26,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:13:26,340 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:26,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 134 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 02:13:26,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-22 02:13:26,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2022-11-22 02:13:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-22 02:13:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2022-11-22 02:13:26,354 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 33 [2022-11-22 02:13:26,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:26,355 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2022-11-22 02:13:26,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-22 02:13:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2022-11-22 02:13:26,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-22 02:13:26,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:26,357 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-22 02:13:26,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:26,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:26,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:26,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:26,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1817674979, now seen corresponding path program 1 times [2022-11-22 02:13:26,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:26,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677403115] [2022-11-22 02:13:26,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:26,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:13:26,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:26,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677403115] [2022-11-22 02:13:26,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677403115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:26,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:26,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:13:26,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730863300] [2022-11-22 02:13:26,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:26,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:13:26,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:26,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:13:26,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:26,896 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 02:13:28,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:13:28,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:28,989 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2022-11-22 02:13:28,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:13:28,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2022-11-22 02:13:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:28,991 INFO L225 Difference]: With dead ends: 83 [2022-11-22 02:13:28,991 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 02:13:28,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:28,993 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:28,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 02:13:28,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 02:13:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-11-22 02:13:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-22 02:13:29,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2022-11-22 02:13:29,007 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 34 [2022-11-22 02:13:29,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:29,008 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2022-11-22 02:13:29,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 02:13:29,008 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2022-11-22 02:13:29,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-22 02:13:29,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:29,010 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-22 02:13:29,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:13:29,010 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:29,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:29,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1891232334, now seen corresponding path program 1 times [2022-11-22 02:13:29,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:29,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743329258] [2022-11-22 02:13:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:29,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:13:29,415 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:13:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:13:30,694 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:13:30,695 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:13:30,697 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 02:13:30,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:13:30,707 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-22 02:13:30,711 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:13:30,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:13:30 BoogieIcfgContainer [2022-11-22 02:13:30,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:13:30,768 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:13:30,768 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:13:30,768 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:13:30,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:18" (3/4) ... [2022-11-22 02:13:30,772 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 02:13:30,772 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:13:30,772 INFO L158 Benchmark]: Toolchain (without parser) took 15977.18ms. Allocated memory was 167.8MB in the beginning and 306.2MB in the end (delta: 138.4MB). Free memory was 129.4MB in the beginning and 210.7MB in the end (delta: -81.3MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2022-11-22 02:13:30,773 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:13:30,773 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2194.94ms. Allocated memory is still 167.8MB. Free memory was 128.9MB in the beginning and 112.6MB in the end (delta: 16.3MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2022-11-22 02:13:30,773 INFO L158 Benchmark]: Boogie Procedure Inliner took 138.68ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 108.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 02:13:30,774 INFO L158 Benchmark]: Boogie Preprocessor took 81.55ms. Allocated memory is still 167.8MB. Free memory was 108.4MB in the beginning and 105.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 02:13:30,774 INFO L158 Benchmark]: RCFGBuilder took 1190.19ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 105.6MB in the beginning and 127.2MB in the end (delta: -21.5MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. [2022-11-22 02:13:30,775 INFO L158 Benchmark]: TraceAbstraction took 12357.50ms. Allocated memory was 201.3MB in the beginning and 306.2MB in the end (delta: 104.9MB). Free memory was 126.1MB in the beginning and 210.7MB in the end (delta: -84.6MB). Peak memory consumption was 110.5MB. Max. memory is 16.1GB. [2022-11-22 02:13:30,775 INFO L158 Benchmark]: Witness Printer took 4.18ms. Allocated memory is still 306.2MB. Free memory is still 210.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:13:30,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2194.94ms. Allocated memory is still 167.8MB. Free memory was 128.9MB in the beginning and 112.6MB in the end (delta: 16.3MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 138.68ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 108.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.55ms. Allocated memory is still 167.8MB. Free memory was 108.4MB in the beginning and 105.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1190.19ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 105.6MB in the beginning and 127.2MB in the end (delta: -21.5MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. * TraceAbstraction took 12357.50ms. Allocated memory was 201.3MB in the beginning and 306.2MB in the end (delta: 104.9MB). Free memory was 126.1MB in the beginning and 210.7MB in the end (delta: -84.6MB). Peak memory consumption was 110.5MB. Max. memory is 16.1GB. * Witness Printer took 4.18ms. Allocated memory is still 306.2MB. Free memory is still 210.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 5884. Possible FailurePath: [L5947] CALL memset_using_uint64_harness() [L5937] short d1[160]; [L5938] short d2[160]; [L5939] int c = __VERIFIER_nondet_int(); [L5940] unsigned size = __VERIFIER_nondet_uint(); [L5941] CALL assume_abort_if_not(size < 160) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) [L5941] RET assume_abort_if_not(size < 160) VAL [c=-249, d1={10:0}, d2={11:0}, size=1] [L5942] CALL memset_impl(d1, c, size) [L5870] CALL assume_abort_if_not((((n) == 0) || (s))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) [L5870] RET assume_abort_if_not((((n) == 0) || (s))) VAL [c=-249, n=1, s={10:0}] [L5871] COND TRUE n > 0 [L5872] char *sp = (char *)s; [L5873] unsigned long i = 0; VAL [c=-249, i=0, n=1, s={10:0}, sp={10:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ VAL [c=-249, i=1, n=1, s={10:0}, sp={10:0}] [L5873] COND FALSE !(i < n) VAL [c=-249, i=1, n=1, s={10:0}, sp={10:0}] [L5876] return s; [L5942] RET memset_impl(d1, c, size) [L5943] CALL memset_using_uint64_impl(d2, c, size) [L5881] CALL assume_abort_if_not((((n) == 0) || (dst))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) [L5881] RET assume_abort_if_not((((n) == 0) || (dst))) VAL [c=-249, dst={11:0}, n=1] [L5883] size_t num_uint64s = n >> 3; [L5884] size_t rem = n & 0x7; [L5886] uint8_t *d = (uint8_t *)dst; [L5890] case 7: [L5892] case 6: [L5894] case 5: [L5896] case 4: [L5898] case 3: [L5900] case 2: [L5902] case 1: [L5906] d += rem [L5908] uint64_t compounded = 0; [L5909] COND FALSE !(num_uint64s > 0 && c != 0) [L5921] size_t i = 0; VAL [c=-249, chars={11:-8}, compounded={9:0}, d={11:9223372036854775807}, dst={11:0}, i=0, n=1, num_uint64s=0, rem=9223372036854775807] [L5921] COND FALSE !(i < num_uint64s) [L5925] return dst; [L5908] uint64_t compounded = 0; [L5925] return dst; [L5943] RET memset_using_uint64_impl(d2, c, size) [L5944] CALL assert_bytes_match(d1, d2, size) [L5654] CALL __VERIFIER_assert(!a == !b) VAL [\old(cond)=1] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5654] RET __VERIFIER_assert(!a == !b) VAL [\old(len)=1, a={10:0}, a={10:0}, b={11:0}, b={11:0}, len=1] [L5655-L5658] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) VAL [\old(len)=1, a={10:0}, a={10:0}, b={11:0}, b={11:0}, len=1] [L5660] CALL, EXPR nondet_uint64_t() [L266] return __VERIFIER_nondet_ulong(); [L5660] RET, EXPR nondet_uint64_t() VAL [\old(len)=1, a={10:0}, a={10:0}, b={11:0}, b={11:0}, len=1, nondet_uint64_t()=0] [L5660] size_t i = nondet_uint64_t(); [L5661-L5663] CALL assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) [L5661-L5663] RET assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(len)=1, a={10:0}, a={10:0}, b={11:0}, b={11:0}, i=0, len=1] [L5664] EXPR a[i] [L5664] EXPR b[i] VAL [\old(len)=1, a={10:0}, a={10:0}, a[i]=7, b={11:0}, b={11:0}, b[i]=-248, i=0, len=1] [L5664] CALL __VERIFIER_assert(a[i] == b[i]) VAL [\old(cond)=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L223] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.2s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 357 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 243 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 144 IncrementalHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 114 mSDtfsCounter, 144 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=3, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 338 SizeOfPredicates, 7 NumberOfNonLiveVariables, 394 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 45/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-22 02:13:30,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba --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 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:13:33,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:13:33,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:13:33,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:13:33,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:13:33,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:13:33,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:13:33,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:13:33,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:13:33,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:13:33,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:13:33,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:13:33,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:13:33,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:13:33,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:13:33,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:13:33,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:13:33,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:13:33,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:13:33,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:13:33,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:13:33,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:13:33,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:13:33,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:13:33,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:13:33,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:13:33,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:13:33,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:13:33,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:13:33,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:13:33,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:13:33,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:13:33,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:13:33,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:13:33,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:13:33,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:13:33,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:13:33,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:13:33,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:13:33,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:13:33,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:13:33,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-22 02:13:33,764 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:13:33,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:13:33,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:13:33,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:13:33,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:13:33,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:13:33,768 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:13:33,768 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:13:33,768 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:13:33,769 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:13:33,770 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:13:33,770 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:13:33,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:13:33,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:13:33,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:13:33,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:13:33,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:13:33,772 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 02:13:33,772 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 02:13:33,773 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 02:13:33,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:13:33,773 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:13:33,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:13:33,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:13:33,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 02:13:33,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:13:33,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:13:33,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:13:33,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:13:33,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:13:33,775 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 02:13:33,775 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 02:13:33,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:13:33,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:13:33,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 02:13:33,776 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_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2022-11-22 02:13:34,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:13:34,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:13:34,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:13:34,236 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:13:34,236 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:13:34,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-11-22 02:13:37,631 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:13:38,126 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:13:38,127 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-11-22 02:13:38,156 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/data/cdcdaad8a/c71af63ee04246cc9254d48edf9f2343/FLAGf6853d2e9 [2022-11-22 02:13:38,177 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/data/cdcdaad8a/c71af63ee04246cc9254d48edf9f2343 [2022-11-22 02:13:38,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:13:38,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:13:38,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:13:38,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:13:38,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:13:38,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:13:38" (1/1) ... [2022-11-22 02:13:38,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446ab47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:38, skipping insertion in model container [2022-11-22 02:13:38,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:13:38" (1/1) ... [2022-11-22 02:13:38,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:13:38,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:13:38,644 WARN L237 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_92eefe6b-d206-43ba-bc44-d49c4ffa671f/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4493,4506] [2022-11-22 02:13:38,652 WARN L237 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_92eefe6b-d206-43ba-bc44-d49c4ffa671f/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4553,4566] [2022-11-22 02:13:39,490 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:39,491 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:39,491 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:39,492 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:39,493 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:39,508 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:39,509 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:39,511 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:39,525 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:39,527 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:39,529 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:39,529 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:39,530 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:39,748 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:13:39,751 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:13:39,752 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:13:39,758 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:13:39,760 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:13:39,761 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:13:39,762 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:13:39,763 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:13:39,764 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:13:39,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:13:39,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:13:39,871 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-22 02:13:39,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:13:39,930 WARN L237 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_92eefe6b-d206-43ba-bc44-d49c4ffa671f/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4493,4506] [2022-11-22 02:13:39,931 WARN L237 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_92eefe6b-d206-43ba-bc44-d49c4ffa671f/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4553,4566] [2022-11-22 02:13:40,012 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,013 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,013 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,014 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,015 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,024 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,025 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,026 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,027 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,039 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,040 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,041 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,042 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,064 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:13:40,065 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:13:40,066 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:13:40,067 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:13:40,069 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:13:40,069 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:13:40,070 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:13:40,071 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:13:40,071 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:13:40,072 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:13:40,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:13:40,104 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:13:40,131 WARN L237 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_92eefe6b-d206-43ba-bc44-d49c4ffa671f/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4493,4506] [2022-11-22 02:13:40,132 WARN L237 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_92eefe6b-d206-43ba-bc44-d49c4ffa671f/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4553,4566] [2022-11-22 02:13:40,209 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,210 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,211 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,211 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,212 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,223 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,223 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,224 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,225 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,226 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,232 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,233 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,234 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:13:40,260 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:13:40,262 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:13:40,262 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:13:40,263 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:13:40,267 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:13:40,267 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:13:40,268 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:13:40,268 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:13:40,270 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:13:40,270 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:13:40,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:13:40,589 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:13:40,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:40 WrapperNode [2022-11-22 02:13:40,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:13:40,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:13:40,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:13:40,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:13:40,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:40" (1/1) ... [2022-11-22 02:13:40,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:40" (1/1) ... [2022-11-22 02:13:40,710 INFO L138 Inliner]: procedures = 611, calls = 624, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 122 [2022-11-22 02:13:40,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:13:40,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:13:40,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:13:40,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:13:40,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:40" (1/1) ... [2022-11-22 02:13:40,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:40" (1/1) ... [2022-11-22 02:13:40,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:40" (1/1) ... [2022-11-22 02:13:40,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:40" (1/1) ... [2022-11-22 02:13:40,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:40" (1/1) ... [2022-11-22 02:13:40,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:40" (1/1) ... [2022-11-22 02:13:40,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:40" (1/1) ... [2022-11-22 02:13:40,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:40" (1/1) ... [2022-11-22 02:13:40,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:13:40,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:13:40,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:13:40,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:13:40,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:40" (1/1) ... [2022-11-22 02:13:40,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:13:40,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:13:40,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:13:40,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:13:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:13:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-22 02:13:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-22 02:13:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 02:13:40,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 02:13:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:13:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:13:40,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:13:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-22 02:13:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-22 02:13:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 02:13:40,875 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 02:13:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:13:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-22 02:13:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-22 02:13:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2022-11-22 02:13:40,875 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2022-11-22 02:13:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-22 02:13:40,876 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-22 02:13:41,175 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:13:41,184 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:13:43,840 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:13:43,848 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:13:43,848 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:13:43,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:43 BoogieIcfgContainer [2022-11-22 02:13:43,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:13:43,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:13:43,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:13:43,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:13:43,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:13:38" (1/3) ... [2022-11-22 02:13:43,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce3868c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:13:43, skipping insertion in model container [2022-11-22 02:13:43,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:13:40" (2/3) ... [2022-11-22 02:13:43,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce3868c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:13:43, skipping insertion in model container [2022-11-22 02:13:43,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:13:43" (3/3) ... [2022-11-22 02:13:43,861 INFO L112 eAbstractionObserver]: Analyzing ICFG memset_using_uint64_harness.i [2022-11-22 02:13:43,884 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:13:43,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:13:43,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:13:43,949 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@57fdd0e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:13:43,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:13:43,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 54 states have internal predecessors, (71), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-22 02:13:43,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 02:13:43,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:43,971 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:43,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:43,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:43,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1430345650, now seen corresponding path program 1 times [2022-11-22 02:13:43,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:13:43,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386662258] [2022-11-22 02:13:43,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:43,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:43,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:13:44,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:13:44,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-22 02:13:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:44,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-22 02:13:44,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:44,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:13:44,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:13:44,533 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:13:44,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386662258] [2022-11-22 02:13:44,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386662258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:44,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:44,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:13:44,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938418523] [2022-11-22 02:13:44,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:44,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:13:44,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:13:44,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:13:44,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:13:44,600 INFO L87 Difference]: Start difference. First operand has 70 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 54 states have internal predecessors, (71), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 02:13:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:44,652 INFO L93 Difference]: Finished difference Result 137 states and 191 transitions. [2022-11-22 02:13:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:13:44,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-11-22 02:13:44,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:44,670 INFO L225 Difference]: With dead ends: 137 [2022-11-22 02:13:44,670 INFO L226 Difference]: Without dead ends: 62 [2022-11-22 02:13:44,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:13:44,683 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:44,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:13:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-22 02:13:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-22 02:13:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 48 states have internal predecessors, (60), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-22 02:13:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2022-11-22 02:13:44,744 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 45 [2022-11-22 02:13:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:44,745 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2022-11-22 02:13:44,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 02:13:44,746 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2022-11-22 02:13:44,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 02:13:44,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:44,750 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:44,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:44,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:44,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:44,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:44,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1361752392, now seen corresponding path program 1 times [2022-11-22 02:13:44,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:13:44,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897862809] [2022-11-22 02:13:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:44,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:44,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:13:44,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:13:44,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-22 02:13:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:45,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 02:13:45,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:13:45,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:13:45,619 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:13:45,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897862809] [2022-11-22 02:13:45,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897862809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:45,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:45,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:13:45,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180107556] [2022-11-22 02:13:45,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:45,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:13:45,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:13:45,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:13:45,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:13:45,623 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 02:13:46,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:46,239 INFO L93 Difference]: Finished difference Result 158 states and 203 transitions. [2022-11-22 02:13:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:13:46,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-22 02:13:46,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:46,241 INFO L225 Difference]: With dead ends: 158 [2022-11-22 02:13:46,242 INFO L226 Difference]: Without dead ends: 109 [2022-11-22 02:13:46,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:13:46,244 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 154 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:46,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 301 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:13:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-22 02:13:46,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 67. [2022-11-22 02:13:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 52 states have internal predecessors, (64), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 02:13:46,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2022-11-22 02:13:46,260 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 45 [2022-11-22 02:13:46,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:46,261 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2022-11-22 02:13:46,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 02:13:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2022-11-22 02:13:46,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 02:13:46,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:46,262 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:46,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:46,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:46,479 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:46,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1127776570, now seen corresponding path program 1 times [2022-11-22 02:13:46,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:13:46,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143479514] [2022-11-22 02:13:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:46,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:46,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:13:46,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:13:46,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-22 02:13:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:46,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:13:46,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:13:47,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:13:47,267 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:13:47,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143479514] [2022-11-22 02:13:47,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143479514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:47,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:47,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:13:47,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226999719] [2022-11-22 02:13:47,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:47,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:13:47,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:13:47,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:13:47,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:13:47,271 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 02:13:48,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:48,086 INFO L93 Difference]: Finished difference Result 150 states and 193 transitions. [2022-11-22 02:13:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:13:48,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-22 02:13:48,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:48,093 INFO L225 Difference]: With dead ends: 150 [2022-11-22 02:13:48,093 INFO L226 Difference]: Without dead ends: 103 [2022-11-22 02:13:48,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:13:48,094 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 141 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:48,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 301 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:13:48,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-22 02:13:48,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 79. [2022-11-22 02:13:48,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 64 states have internal predecessors, (76), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 02:13:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2022-11-22 02:13:48,109 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 45 [2022-11-22 02:13:48,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:48,109 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2022-11-22 02:13:48,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 02:13:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2022-11-22 02:13:48,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 02:13:48,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:48,111 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:48,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:48,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:48,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash 979847108, now seen corresponding path program 1 times [2022-11-22 02:13:48,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:13:48,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411310463] [2022-11-22 02:13:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:48,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:48,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:13:48,315 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:13:48,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-22 02:13:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:48,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:13:48,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:13:49,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:13:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:13:49,381 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:13:49,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411310463] [2022-11-22 02:13:49,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411310463] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:13:49,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:13:49,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-11-22 02:13:49,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449097250] [2022-11-22 02:13:49,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:49,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:13:49,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:13:49,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:13:49,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:13:49,383 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 02:13:51,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:13:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:52,254 INFO L93 Difference]: Finished difference Result 130 states and 161 transitions. [2022-11-22 02:13:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:13:52,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-22 02:13:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:52,256 INFO L225 Difference]: With dead ends: 130 [2022-11-22 02:13:52,257 INFO L226 Difference]: Without dead ends: 95 [2022-11-22 02:13:52,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:13:52,258 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 108 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:52,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 321 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 58 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-11-22 02:13:52,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-22 02:13:52,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 83. [2022-11-22 02:13:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 68 states have internal predecessors, (80), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 02:13:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 102 transitions. [2022-11-22 02:13:52,276 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 102 transitions. Word has length 45 [2022-11-22 02:13:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:52,276 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 102 transitions. [2022-11-22 02:13:52,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 02:13:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 102 transitions. [2022-11-22 02:13:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 02:13:52,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:52,278 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:52,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:52,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:52,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:52,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1659905478, now seen corresponding path program 1 times [2022-11-22 02:13:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:13:52,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188394986] [2022-11-22 02:13:52,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:52,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:52,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:13:52,504 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:13:52,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-22 02:13:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:52,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:13:52,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:13:53,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:13:53,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:13:53,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188394986] [2022-11-22 02:13:53,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188394986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:53,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:53,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:13:53,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292501446] [2022-11-22 02:13:53,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:53,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:13:53,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:13:53,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:13:53,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:13:53,184 INFO L87 Difference]: Start difference. First operand 83 states and 102 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 02:13:53,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:53,401 INFO L93 Difference]: Finished difference Result 89 states and 107 transitions. [2022-11-22 02:13:53,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:13:53,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-22 02:13:53,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:53,403 INFO L225 Difference]: With dead ends: 89 [2022-11-22 02:13:53,403 INFO L226 Difference]: Without dead ends: 87 [2022-11-22 02:13:53,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:13:53,405 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 32 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:53,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 294 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:53,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-22 02:13:53,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-11-22 02:13:53,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 71 states have internal predecessors, (83), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 02:13:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2022-11-22 02:13:53,421 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 45 [2022-11-22 02:13:53,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:53,421 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2022-11-22 02:13:53,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 02:13:53,422 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2022-11-22 02:13:53,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-22 02:13:53,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:53,430 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:13:53,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:53,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:53,630 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:53,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:53,631 INFO L85 PathProgramCache]: Analyzing trace with hash 990784662, now seen corresponding path program 1 times [2022-11-22 02:13:53,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:13:53,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765375167] [2022-11-22 02:13:53,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:53,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:53,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:13:53,634 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:13:53,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-22 02:13:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:53,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:13:53,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:13:54,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:13:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:13:54,400 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:13:54,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765375167] [2022-11-22 02:13:54,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765375167] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:13:54,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:13:54,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2022-11-22 02:13:54,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127011018] [2022-11-22 02:13:54,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:54,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:13:54,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:13:54,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:13:54,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:13:54,402 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-22 02:13:54,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:54,582 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2022-11-22 02:13:54,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:13:54,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 62 [2022-11-22 02:13:54,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:54,584 INFO L225 Difference]: With dead ends: 121 [2022-11-22 02:13:54,584 INFO L226 Difference]: Without dead ends: 93 [2022-11-22 02:13:54,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:13:54,586 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 50 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:54,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 252 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-22 02:13:54,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2022-11-22 02:13:54,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.178082191780822) internal successors, (86), 74 states have internal predecessors, (86), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-22 02:13:54,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2022-11-22 02:13:54,611 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 62 [2022-11-22 02:13:54,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:54,612 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2022-11-22 02:13:54,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-22 02:13:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2022-11-22 02:13:54,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:13:54,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:54,617 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:13:54,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:54,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:54,840 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:54,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:54,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1705601977, now seen corresponding path program 1 times [2022-11-22 02:13:54,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:13:54,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012888430] [2022-11-22 02:13:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:54,841 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:54,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:13:54,846 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:13:54,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-22 02:13:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:55,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:13:55,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 02:13:55,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:13:55,116 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:13:55,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012888430] [2022-11-22 02:13:55,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012888430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:55,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:55,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:13:55,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435899809] [2022-11-22 02:13:55,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:55,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:13:55,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:13:55,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:13:55,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:55,119 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 02:13:55,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:55,243 INFO L93 Difference]: Finished difference Result 155 states and 190 transitions. [2022-11-22 02:13:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:13:55,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-11-22 02:13:55,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:55,246 INFO L225 Difference]: With dead ends: 155 [2022-11-22 02:13:55,246 INFO L226 Difference]: Without dead ends: 104 [2022-11-22 02:13:55,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:13:55,247 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:55,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 132 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-22 02:13:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2022-11-22 02:13:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 86 states have internal predecessors, (98), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-22 02:13:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2022-11-22 02:13:55,261 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 63 [2022-11-22 02:13:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:55,262 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2022-11-22 02:13:55,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 02:13:55,262 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2022-11-22 02:13:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:13:55,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:55,264 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:13:55,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-22 02:13:55,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:55,487 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:55,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:55,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1560006021, now seen corresponding path program 1 times [2022-11-22 02:13:55,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:13:55,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802745892] [2022-11-22 02:13:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:55,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:55,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:13:55,491 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:13:55,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-22 02:13:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:55,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:13:55,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:13:56,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:13:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:13:56,746 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:13:56,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802745892] [2022-11-22 02:13:56,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802745892] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:13:56,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:13:56,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-22 02:13:56,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311191591] [2022-11-22 02:13:56,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:56,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:13:56,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:13:56,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:13:56,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:13:56,749 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 02:13:58,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:13:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:59,071 INFO L93 Difference]: Finished difference Result 154 states and 183 transitions. [2022-11-22 02:13:59,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:13:59,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-11-22 02:13:59,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:59,074 INFO L225 Difference]: With dead ends: 154 [2022-11-22 02:13:59,074 INFO L226 Difference]: Without dead ends: 118 [2022-11-22 02:13:59,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:13:59,075 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 13 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:59,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 182 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 02:13:59,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-22 02:13:59,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 105. [2022-11-22 02:13:59,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 87 states have (on average 1.1494252873563218) internal successors, (100), 88 states have internal predecessors, (100), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-22 02:13:59,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2022-11-22 02:13:59,093 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 63 [2022-11-22 02:13:59,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:59,093 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2022-11-22 02:13:59,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 02:13:59,094 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2022-11-22 02:13:59,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:13:59,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:59,095 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:13:59,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:59,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:59,311 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:59,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:59,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1497966407, now seen corresponding path program 1 times [2022-11-22 02:13:59,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:13:59,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47253980] [2022-11-22 02:13:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:59,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:13:59,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:13:59,313 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:13:59,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-22 02:13:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:59,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 02:13:59,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:13:59,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:14:00,203 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:14:00,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47253980] [2022-11-22 02:14:00,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47253980] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:14:00,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:14:00,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 14 [2022-11-22 02:14:00,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571731584] [2022-11-22 02:14:00,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:14:00,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:14:00,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:14:00,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:14:00,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:14:00,206 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:14:00,807 INFO L93 Difference]: Finished difference Result 209 states and 249 transitions. [2022-11-22 02:14:00,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:14:00,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2022-11-22 02:14:00,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:14:00,809 INFO L225 Difference]: With dead ends: 209 [2022-11-22 02:14:00,809 INFO L226 Difference]: Without dead ends: 154 [2022-11-22 02:14:00,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:14:00,813 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 163 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:14:00,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 314 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:14:00,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-22 02:14:00,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 111. [2022-11-22 02:14:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 93 states have internal predecessors, (106), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 02:14:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2022-11-22 02:14:00,840 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 63 [2022-11-22 02:14:00,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:14:00,841 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2022-11-22 02:14:00,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:00,841 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2022-11-22 02:14:00,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:14:00,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:14:00,843 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:14:00,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-22 02:14:01,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:01,059 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:14:01,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:14:01,060 INFO L85 PathProgramCache]: Analyzing trace with hash 395834293, now seen corresponding path program 1 times [2022-11-22 02:14:01,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:14:01,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657109074] [2022-11-22 02:14:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:01,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:01,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:14:01,061 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:14:01,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-22 02:14:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:01,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-22 02:14:01,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:02,027 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:14:02,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:14:02,748 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:14:02,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657109074] [2022-11-22 02:14:02,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657109074] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:14:02,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:14:02,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 17 [2022-11-22 02:14:02,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871976620] [2022-11-22 02:14:02,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:14:02,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:14:02,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:14:02,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:14:02,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:14:02,750 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:03,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:14:03,616 INFO L93 Difference]: Finished difference Result 203 states and 242 transitions. [2022-11-22 02:14:03,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:14:03,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2022-11-22 02:14:03,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:14:03,621 INFO L225 Difference]: With dead ends: 203 [2022-11-22 02:14:03,621 INFO L226 Difference]: Without dead ends: 150 [2022-11-22 02:14:03,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:14:03,622 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 149 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:14:03,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 321 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:14:03,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-22 02:14:03,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 115. [2022-11-22 02:14:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 97 states have internal predecessors, (110), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 02:14:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2022-11-22 02:14:03,651 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 63 [2022-11-22 02:14:03,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:14:03,651 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2022-11-22 02:14:03,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:03,652 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2022-11-22 02:14:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:14:03,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:14:03,657 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:14:03,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-22 02:14:03,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:03,875 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:14:03,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:14:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1467507, now seen corresponding path program 1 times [2022-11-22 02:14:03,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:14:03,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819437166] [2022-11-22 02:14:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:03,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:03,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:14:03,878 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:14:03,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-22 02:14:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:04,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-22 02:14:04,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:14:04,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:14:05,784 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:14:05,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819437166] [2022-11-22 02:14:05,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819437166] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:14:05,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:14:05,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 18 [2022-11-22 02:14:05,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392026011] [2022-11-22 02:14:05,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:14:05,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 02:14:05,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:14:05,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 02:14:05,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-22 02:14:05,787 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:14:06,659 INFO L93 Difference]: Finished difference Result 197 states and 234 transitions. [2022-11-22 02:14:06,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:14:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2022-11-22 02:14:06,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:14:06,661 INFO L225 Difference]: With dead ends: 197 [2022-11-22 02:14:06,661 INFO L226 Difference]: Without dead ends: 148 [2022-11-22 02:14:06,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-11-22 02:14:06,662 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 128 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:14:06,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 416 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:14:06,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-22 02:14:06,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 117. [2022-11-22 02:14:06,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 98 states have (on average 1.1428571428571428) internal successors, (112), 99 states have internal predecessors, (112), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 02:14:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 138 transitions. [2022-11-22 02:14:06,682 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 138 transitions. Word has length 63 [2022-11-22 02:14:06,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:14:06,684 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 138 transitions. [2022-11-22 02:14:06,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:06,684 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 138 transitions. [2022-11-22 02:14:06,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:14:06,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:14:06,687 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:14:06,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-22 02:14:06,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:06,902 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:14:06,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:14:06,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2052451505, now seen corresponding path program 1 times [2022-11-22 02:14:06,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:14:06,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134117327] [2022-11-22 02:14:06,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:06,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:06,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:14:06,904 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:14:06,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-22 02:14:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:07,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 02:14:07,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:14:07,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:14:08,300 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:14:08,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134117327] [2022-11-22 02:14:08,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134117327] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:14:08,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:14:08,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2022-11-22 02:14:08,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397309088] [2022-11-22 02:14:08,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:14:08,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:14:08,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:14:08,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:14:08,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-22 02:14:08,302 INFO L87 Difference]: Start difference. First operand 117 states and 138 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:09,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:14:09,080 INFO L93 Difference]: Finished difference Result 193 states and 229 transitions. [2022-11-22 02:14:09,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:14:09,081 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2022-11-22 02:14:09,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:14:09,082 INFO L225 Difference]: With dead ends: 193 [2022-11-22 02:14:09,082 INFO L226 Difference]: Without dead ends: 146 [2022-11-22 02:14:09,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-22 02:14:09,084 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 171 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:14:09,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 375 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:14:09,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-22 02:14:09,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2022-11-22 02:14:09,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 100 states have (on average 1.14) internal successors, (114), 101 states have internal predecessors, (114), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 02:14:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 140 transitions. [2022-11-22 02:14:09,114 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 140 transitions. Word has length 63 [2022-11-22 02:14:09,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:14:09,115 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 140 transitions. [2022-11-22 02:14:09,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:09,115 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 140 transitions. [2022-11-22 02:14:09,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:14:09,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:14:09,117 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:14:09,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-22 02:14:09,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:09,332 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:14:09,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:14:09,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1967756177, now seen corresponding path program 1 times [2022-11-22 02:14:09,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:14:09,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628370663] [2022-11-22 02:14:09,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:09,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:09,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:14:09,335 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:14:09,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-22 02:14:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:09,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 02:14:09,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:14:10,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:14:10,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:14:10,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628370663] [2022-11-22 02:14:10,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628370663] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:14:10,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:14:10,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2022-11-22 02:14:10,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723368212] [2022-11-22 02:14:10,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:14:10,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:14:10,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:14:10,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:14:10,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-22 02:14:10,747 INFO L87 Difference]: Start difference. First operand 119 states and 140 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:14:11,410 INFO L93 Difference]: Finished difference Result 189 states and 224 transitions. [2022-11-22 02:14:11,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:14:11,411 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2022-11-22 02:14:11,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:14:11,412 INFO L225 Difference]: With dead ends: 189 [2022-11-22 02:14:11,412 INFO L226 Difference]: Without dead ends: 144 [2022-11-22 02:14:11,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-22 02:14:11,413 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 172 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:14:11,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 367 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:14:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-22 02:14:11,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 121. [2022-11-22 02:14:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 02:14:11,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2022-11-22 02:14:11,435 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 63 [2022-11-22 02:14:11,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:14:11,435 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2022-11-22 02:14:11,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:11,436 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2022-11-22 02:14:11,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:14:11,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:14:11,437 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:14:11,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-22 02:14:11,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:11,646 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:14:11,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:14:11,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1945123923, now seen corresponding path program 1 times [2022-11-22 02:14:11,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:14:11,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797508155] [2022-11-22 02:14:11,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:11,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:11,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:14:11,650 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:14:11,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-22 02:14:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:11,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 02:14:11,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:14:12,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:14:12,917 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:14:12,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797508155] [2022-11-22 02:14:12,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797508155] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:14:12,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:14:12,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2022-11-22 02:14:12,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571996229] [2022-11-22 02:14:12,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:14:12,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:14:12,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:14:12,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:14:12,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-22 02:14:12,919 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:13,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:14:13,580 INFO L93 Difference]: Finished difference Result 186 states and 220 transitions. [2022-11-22 02:14:13,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:14:13,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2022-11-22 02:14:13,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:14:13,582 INFO L225 Difference]: With dead ends: 186 [2022-11-22 02:14:13,582 INFO L226 Difference]: Without dead ends: 143 [2022-11-22 02:14:13,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-22 02:14:13,584 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 127 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:14:13,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 397 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:14:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-22 02:14:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 123. [2022-11-22 02:14:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 104 states have (on average 1.1346153846153846) internal successors, (118), 105 states have internal predecessors, (118), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 02:14:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2022-11-22 02:14:13,609 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 63 [2022-11-22 02:14:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:14:13,609 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2022-11-22 02:14:13,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:13,610 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2022-11-22 02:14:13,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:14:13,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:14:13,611 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:14:13,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-22 02:14:13,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:13,828 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:14:13,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:14:13,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1840370283, now seen corresponding path program 1 times [2022-11-22 02:14:13,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:14:13,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098487972] [2022-11-22 02:14:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:13,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:13,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:14:13,831 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:14:13,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-22 02:14:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:13,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 02:14:13,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:14:14,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:14:14,423 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:14:14,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098487972] [2022-11-22 02:14:14,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098487972] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:14:14,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:14:14,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-22 02:14:14,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327112857] [2022-11-22 02:14:14,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:14:14,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:14:14,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:14:14,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:14:14,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:14:14,426 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 02:14:16,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:14:18,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:14:20,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:14:20,570 INFO L93 Difference]: Finished difference Result 192 states and 230 transitions. [2022-11-22 02:14:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:14:20,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2022-11-22 02:14:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:14:20,572 INFO L225 Difference]: With dead ends: 192 [2022-11-22 02:14:20,572 INFO L226 Difference]: Without dead ends: 156 [2022-11-22 02:14:20,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:14:20,573 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 81 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:14:20,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 555 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 87 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-22 02:14:20,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-22 02:14:20,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 125. [2022-11-22 02:14:20,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 106 states have (on average 1.1415094339622642) internal successors, (121), 107 states have internal predecessors, (121), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 02:14:20,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2022-11-22 02:14:20,598 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 63 [2022-11-22 02:14:20,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:14:20,598 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2022-11-22 02:14:20,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 02:14:20,599 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2022-11-22 02:14:20,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-22 02:14:20,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:14:20,600 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:14:20,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-22 02:14:20,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:20,815 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:14:20,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:14:20,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1435540623, now seen corresponding path program 1 times [2022-11-22 02:14:20,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:14:20,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938098253] [2022-11-22 02:14:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:20,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:20,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:14:20,819 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:14:20,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-22 02:14:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:21,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 02:14:21,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 02:14:21,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-22 02:14:22,220 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:14:22,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938098253] [2022-11-22 02:14:22,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938098253] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:14:22,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:14:22,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-11-22 02:14:22,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963629071] [2022-11-22 02:14:22,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:14:22,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:14:22,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:14:22,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:14:22,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:14:22,223 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:24,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:14:24,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:14:24,843 INFO L93 Difference]: Finished difference Result 169 states and 195 transitions. [2022-11-22 02:14:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:14:24,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 65 [2022-11-22 02:14:24,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:14:24,846 INFO L225 Difference]: With dead ends: 169 [2022-11-22 02:14:24,846 INFO L226 Difference]: Without dead ends: 108 [2022-11-22 02:14:24,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:14:24,847 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 100 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:14:24,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 336 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-22 02:14:24,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-22 02:14:24,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2022-11-22 02:14:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 89 states have internal predecessors, (101), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-22 02:14:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2022-11-22 02:14:24,873 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 65 [2022-11-22 02:14:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:14:24,874 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2022-11-22 02:14:24,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:14:24,874 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2022-11-22 02:14:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-22 02:14:24,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:14:24,875 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:14:24,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-22 02:14:25,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:25,092 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:14:25,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:14:25,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1286455351, now seen corresponding path program 1 times [2022-11-22 02:14:25,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:14:25,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709652166] [2022-11-22 02:14:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:25,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:25,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:14:25,095 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:14:25,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-22 02:14:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:25,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 02:14:25,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:14:25,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:14:26,259 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:14:26,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709652166] [2022-11-22 02:14:26,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709652166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:14:26,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [398205185] [2022-11-22 02:14:26,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:26,260 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:14:26,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:14:26,262 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:14:26,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-22 02:14:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:26,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:14:26,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 02:14:27,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:14:27,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [398205185] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:14:27,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608260061] [2022-11-22 02:14:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:27,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:14:27,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:14:27,122 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:14:27,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-22 02:14:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:27,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:14:27,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 02:14:27,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:14:27,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608260061] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:14:27,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:14:27,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8, 8, 8, 8] total 19 [2022-11-22 02:14:27,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206389400] [2022-11-22 02:14:27,634 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:14:27,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-22 02:14:27,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:14:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-22 02:14:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:14:27,636 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 18 states have internal predecessors, (66), 7 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-22 02:14:30,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:14:30,743 INFO L93 Difference]: Finished difference Result 264 states and 321 transitions. [2022-11-22 02:14:30,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 02:14:30,744 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 18 states have internal predecessors, (66), 7 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) Word has length 65 [2022-11-22 02:14:30,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:14:30,746 INFO L225 Difference]: With dead ends: 264 [2022-11-22 02:14:30,746 INFO L226 Difference]: Without dead ends: 209 [2022-11-22 02:14:30,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2022-11-22 02:14:30,748 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 309 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:14:30,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 993 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 02:14:30,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-22 02:14:30,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 117. [2022-11-22 02:14:30,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 98 states have (on average 1.163265306122449) internal successors, (114), 99 states have internal predecessors, (114), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 02:14:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 140 transitions. [2022-11-22 02:14:30,782 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 140 transitions. Word has length 65 [2022-11-22 02:14:30,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:14:30,782 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 140 transitions. [2022-11-22 02:14:30,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 18 states have internal predecessors, (66), 7 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-22 02:14:30,783 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 140 transitions. [2022-11-22 02:14:30,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-22 02:14:30,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:14:30,784 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:14:30,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-22 02:14:31,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-22 02:14:31,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-22 02:14:31,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:14:31,390 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:14:31,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:14:31,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1114711245, now seen corresponding path program 1 times [2022-11-22 02:14:31,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:14:31,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092812084] [2022-11-22 02:14:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:31,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:31,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:14:31,393 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:14:31,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-22 02:14:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:31,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-22 02:14:31,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:14:32,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:14:33,298 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:14:33,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092812084] [2022-11-22 02:14:33,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092812084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:14:33,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [645440701] [2022-11-22 02:14:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:33,300 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:14:33,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:14:33,301 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:14:33,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-22 02:14:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:33,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 02:14:33,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 02:14:34,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:14:35,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [645440701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:14:35,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835656320] [2022-11-22 02:14:35,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:35,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:14:35,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:14:35,038 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:14:35,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-22 02:14:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:35,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 02:14:35,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 02:14:35,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:14:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:14:35,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835656320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:14:35,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:14:35,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10, 10, 10, 10] total 29 [2022-11-22 02:14:35,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712258177] [2022-11-22 02:14:35,549 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:14:35,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-22 02:14:35,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:14:35,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-22 02:14:35,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2022-11-22 02:14:35,552 INFO L87 Difference]: Start difference. First operand 117 states and 140 transitions. Second operand has 29 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 28 states have internal predecessors, (85), 9 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2022-11-22 02:14:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:14:40,574 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2022-11-22 02:14:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 02:14:40,575 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 28 states have internal predecessors, (85), 9 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) Word has length 65 [2022-11-22 02:14:40,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:14:40,577 INFO L225 Difference]: With dead ends: 248 [2022-11-22 02:14:40,577 INFO L226 Difference]: Without dead ends: 195 [2022-11-22 02:14:40,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 356 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=487, Invalid=1583, Unknown=0, NotChecked=0, Total=2070 [2022-11-22 02:14:40,579 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 444 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:14:40,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1109 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-22 02:14:40,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-22 02:14:40,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 136. [2022-11-22 02:14:40,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 116 states have (on average 1.1379310344827587) internal successors, (132), 117 states have internal predecessors, (132), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-22 02:14:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 160 transitions. [2022-11-22 02:14:40,618 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 160 transitions. Word has length 65 [2022-11-22 02:14:40,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:14:40,619 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 160 transitions. [2022-11-22 02:14:40,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 28 states have internal predecessors, (85), 9 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2022-11-22 02:14:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 160 transitions. [2022-11-22 02:14:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-22 02:14:40,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:14:40,621 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:14:40,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-22 02:14:40,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-11-22 02:14:41,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-22 02:14:41,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:14:41,227 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:14:41,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:14:41,228 INFO L85 PathProgramCache]: Analyzing trace with hash 839297835, now seen corresponding path program 1 times [2022-11-22 02:14:41,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:14:41,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001518165] [2022-11-22 02:14:41,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:14:41,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:14:41,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:14:41,230 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:14:41,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-22 02:14:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:14:41,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-22 02:14:41,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:14:41,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-22 02:14:42,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-22 02:14:44,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 02:14:47,715 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2| (_ BitVec 64)) (|ULTIMATE.start_memset_using_uint64_impl_~c#1| (_ BitVec 32)) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2| (_ BitVec 64))) (let ((.cse0 ((_ extract 7 0) |ULTIMATE.start_memset_using_uint64_impl_~c#1|))) (and (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2|) (_ bv0 64))) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2|) (_ bv0 64)) .cse0) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2|))))) is different from true [2022-11-22 02:14:50,107 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3| (_ BitVec 64)) (|ULTIMATE.start_memset_using_uint64_impl_~c#1| (_ BitVec 32)) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3| (_ BitVec 64))) (let ((.cse0 ((_ extract 7 0) |ULTIMATE.start_memset_using_uint64_impl_~c#1|))) (and (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3|) (_ bv0 64))) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3|)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3|) (_ bv0 64)))))) is different from true [2022-11-22 02:14:52,474 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4| (_ BitVec 64)) (|ULTIMATE.start_memset_using_uint64_impl_~c#1| (_ BitVec 32)) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4| (_ BitVec 64))) (let ((.cse0 ((_ extract 7 0) |ULTIMATE.start_memset_using_uint64_impl_~c#1|))) (and (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4|) (_ bv0 64))) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4|)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4|) (_ bv0 64)))))) is different from true [2022-11-22 02:15:01,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:01,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-22 02:15:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 2 not checked. [2022-11-22 02:15:01,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:15:03,446 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:15:03,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001518165] [2022-11-22 02:15:03,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001518165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:15:03,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [537811839] [2022-11-22 02:15:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:15:03,447 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:15:03,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:15:03,448 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:15:03,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-22 02:15:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:15:03,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-22 02:15:03,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:15:04,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-22 02:15:04,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:15:04,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-22 02:15:18,132 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:15:18,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-22 02:16:28,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:16:28,629 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:16:28,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 18 [2022-11-22 02:16:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:16:28,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:16:29,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [537811839] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:16:29,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071215602] [2022-11-22 02:16:29,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:29,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:16:29,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:16:29,034 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:16:29,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-22 02:16:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:29,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-22 02:16:29,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:16:29,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-22 02:16:29,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-22 02:16:31,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 02:16:34,130 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_8| (_ BitVec 64)) (|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_8| (_ BitVec 64)) (|ULTIMATE.start_memset_using_uint64_impl_~c#1| (_ BitVec 32))) (let ((.cse0 ((_ extract 7 0) |ULTIMATE.start_memset_using_uint64_impl_~c#1|))) (and (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_8| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_8|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_8|) (_ bv0 64)) .cse0) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_8|) (_ bv0 64)))))) is different from true [2022-11-22 02:16:36,520 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_9| (_ BitVec 64)) (|ULTIMATE.start_memset_using_uint64_impl_~c#1| (_ BitVec 32)) (|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_9| (_ BitVec 64))) (let ((.cse0 ((_ extract 7 0) |ULTIMATE.start_memset_using_uint64_impl_~c#1|))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_9|) (_ bv0 64)) .cse0) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_9|) (_ bv0 64)) .cse0) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_9| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_9|))))) is different from true [2022-11-22 02:16:38,916 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_10| (_ BitVec 64)) (|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_10| (_ BitVec 64)) (|ULTIMATE.start_memset_using_uint64_impl_~c#1| (_ BitVec 32))) (let ((.cse0 ((_ extract 7 0) |ULTIMATE.start_memset_using_uint64_impl_~c#1|))) (and (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_10|) (_ bv0 64))) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_10| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_10|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_10|) (_ bv0 64)) .cse0)))) is different from true [2022-11-22 02:16:41,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:16:41,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-22 02:16:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 2 not checked. [2022-11-22 02:16:41,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:16:41,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071215602] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:16:41,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:16:41,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 26] total 46 [2022-11-22 02:16:41,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669414441] [2022-11-22 02:16:41,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:16:41,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-22 02:16:41,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:16:41,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-22 02:16:41,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1707, Unknown=22, NotChecked=534, Total=2450 [2022-11-22 02:16:41,481 INFO L87 Difference]: Start difference. First operand 136 states and 160 transitions. Second operand has 46 states, 43 states have (on average 2.372093023255814) internal successors, (102), 40 states have internal predecessors, (102), 10 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-22 02:16:43,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:16:45,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:16:51,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:16:53,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:16:55,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:17:05,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:17:07,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:17:09,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:17:11,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:17:13,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:17:27,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:17:29,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:17:31,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:17:33,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:17:40,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:17:46,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:17:58,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:00,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:02,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:04,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:06,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:12,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:14,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:19,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:21,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:25,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:27,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:33,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:35,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:37,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:41,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:48,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:50,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:53,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:18:55,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:57,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:18:59,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:19:01,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:19:03,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:05,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:19:07,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:19:09,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:11,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:13,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:19:15,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:19:17,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:19:19,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:21,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:19:23,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:19:26,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:28,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:31,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:35,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:37,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:39,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:41,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:44,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:46,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:48,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:50,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:52,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:54,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:56,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:19:58,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:03,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:06,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:10,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:13,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:17,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:19,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:21,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:23,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:25,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:28,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:30,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:32,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:34,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:36,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:38,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:40,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:20:42,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:44,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:20:46,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:20:48,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:20:50,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:20:52,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:20:54,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:20:56,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:20:58,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:00,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:02,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:12,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:15,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:21,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:24,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:27,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:33,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:35,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:37,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:39,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:41,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:44,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:46,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:48,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:50,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:52,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:21:58,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:00,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:02,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:04,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:06,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:08,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:10,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:12,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:15,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:17,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:19,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:21,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:27,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:41,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:43,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:45,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:47,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:49,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:51,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:53,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:55,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:57,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:22:59,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:23:02,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:23:04,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:23:06,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:23:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:23:06,585 INFO L93 Difference]: Finished difference Result 244 states and 284 transitions. [2022-11-22 02:23:06,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-22 02:23:06,586 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 2.372093023255814) internal successors, (102), 40 states have internal predecessors, (102), 10 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) Word has length 65 [2022-11-22 02:23:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:23:06,588 INFO L225 Difference]: With dead ends: 244 [2022-11-22 02:23:06,588 INFO L226 Difference]: Without dead ends: 240 [2022-11-22 02:23:06,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 148 SyntacticMatches, 18 SemanticMatches, 74 ConstructedPredicates, 6 IntricatePredicates, 1 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 205.1s TimeCoverageRelationStatistics Valid=644, Invalid=4160, Unknown=50, NotChecked=846, Total=5700 [2022-11-22 02:23:06,591 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 550 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 188 mSolverCounterUnsat, 130 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 289.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 130 IncrementalHoareTripleChecker+Unknown, 798 IncrementalHoareTripleChecker+Unchecked, 291.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:23:06,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 1606 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1888 Invalid, 130 Unknown, 798 Unchecked, 291.1s Time] [2022-11-22 02:23:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-22 02:23:06,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 216. [2022-11-22 02:23:06,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 172 states have (on average 1.1395348837209303) internal successors, (196), 174 states have internal predecessors, (196), 31 states have call successors, (31), 16 states have call predecessors, (31), 12 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-22 02:23:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 252 transitions. [2022-11-22 02:23:06,664 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 252 transitions. Word has length 65 [2022-11-22 02:23:06,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:23:06,664 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 252 transitions. [2022-11-22 02:23:06,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 2.372093023255814) internal successors, (102), 40 states have internal predecessors, (102), 10 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-22 02:23:06,665 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 252 transitions. [2022-11-22 02:23:06,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-22 02:23:06,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:23:06,667 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:23:06,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-22 02:23:06,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-22 02:23:07,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-22 02:23:07,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:23:07,268 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:23:07,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:23:07,269 INFO L85 PathProgramCache]: Analyzing trace with hash 329824745, now seen corresponding path program 1 times [2022-11-22 02:23:07,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:23:07,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322624495] [2022-11-22 02:23:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:07,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:23:07,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:23:07,271 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:23:07,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-22 02:23:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:07,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 02:23:07,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:23:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:23:08,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:23:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:23:09,724 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:23:09,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322624495] [2022-11-22 02:23:09,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322624495] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:23:09,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1298162240] [2022-11-22 02:23:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:09,725 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:23:09,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:23:09,726 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:23:09,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-22 02:23:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:10,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 02:23:10,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:23:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 02:23:10,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:23:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:23:11,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1298162240] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:23:11,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400257039] [2022-11-22 02:23:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:11,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:23:11,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:23:11,875 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:23:11,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-22 02:23:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:12,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 02:23:12,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:23:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 02:23:12,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:23:13,005 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:23:13,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400257039] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:23:13,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:23:13,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9, 9, 10, 10] total 34 [2022-11-22 02:23:13,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840165020] [2022-11-22 02:23:13,006 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:23:13,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-22 02:23:13,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:23:13,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-22 02:23:13,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2022-11-22 02:23:13,008 INFO L87 Difference]: Start difference. First operand 216 states and 252 transitions. Second operand has 34 states, 34 states have (on average 3.588235294117647) internal successors, (122), 33 states have internal predecessors, (122), 9 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2022-11-22 02:23:17,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:23:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:23:29,062 INFO L93 Difference]: Finished difference Result 294 states and 339 transitions. [2022-11-22 02:23:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-22 02:23:29,064 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.588235294117647) internal successors, (122), 33 states have internal predecessors, (122), 9 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) Word has length 65 [2022-11-22 02:23:29,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:23:29,066 INFO L225 Difference]: With dead ends: 294 [2022-11-22 02:23:29,066 INFO L226 Difference]: Without dead ends: 214 [2022-11-22 02:23:29,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 350 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=316, Invalid=1576, Unknown=0, NotChecked=0, Total=1892 [2022-11-22 02:23:29,068 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 568 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 136 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:23:29,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 1018 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 733 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2022-11-22 02:23:29,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-22 02:23:29,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 196. [2022-11-22 02:23:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 158 states have (on average 1.1075949367088607) internal successors, (175), 160 states have internal predecessors, (175), 26 states have call successors, (26), 15 states have call predecessors, (26), 11 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-22 02:23:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 222 transitions. [2022-11-22 02:23:29,152 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 222 transitions. Word has length 65 [2022-11-22 02:23:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:23:29,152 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 222 transitions. [2022-11-22 02:23:29,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.588235294117647) internal successors, (122), 33 states have internal predecessors, (122), 9 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2022-11-22 02:23:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 222 transitions. [2022-11-22 02:23:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-22 02:23:29,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:23:29,154 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:23:29,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-22 02:23:29,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-22 02:23:29,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-22 02:23:29,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:23:29,771 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:23:29,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:23:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1592252509, now seen corresponding path program 1 times [2022-11-22 02:23:29,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:23:29,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206921722] [2022-11-22 02:23:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:29,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:23:29,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:23:29,773 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:23:29,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-22 02:23:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:29,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:23:29,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:23:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:23:30,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:23:30,715 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:23:30,715 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:23:30,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206921722] [2022-11-22 02:23:30,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206921722] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:23:30,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:23:30,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2022-11-22 02:23:30,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069207049] [2022-11-22 02:23:30,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:23:30,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:23:30,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:23:30,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:23:30,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:23:30,717 INFO L87 Difference]: Start difference. First operand 196 states and 222 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:23:31,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:23:31,032 INFO L93 Difference]: Finished difference Result 206 states and 230 transitions. [2022-11-22 02:23:31,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:23:31,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 66 [2022-11-22 02:23:31,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:23:31,034 INFO L225 Difference]: With dead ends: 206 [2022-11-22 02:23:31,034 INFO L226 Difference]: Without dead ends: 157 [2022-11-22 02:23:31,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:23:31,036 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 46 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:23:31,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 378 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:23:31,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-22 02:23:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-11-22 02:23:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 126 states have (on average 1.126984126984127) internal successors, (142), 127 states have internal predecessors, (142), 21 states have call successors, (21), 12 states have call predecessors, (21), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-22 02:23:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2022-11-22 02:23:31,080 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 66 [2022-11-22 02:23:31,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:23:31,081 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2022-11-22 02:23:31,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 02:23:31,081 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2022-11-22 02:23:31,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 02:23:31,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:23:31,082 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:23:31,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-22 02:23:31,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:23:31,287 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:23:31,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:23:31,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1444394001, now seen corresponding path program 1 times [2022-11-22 02:23:31,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:23:31,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764308215] [2022-11-22 02:23:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:31,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:23:31,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:23:31,289 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:23:31,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-22 02:23:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:31,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 02:23:31,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:23:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:23:32,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:23:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:23:34,252 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:23:34,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764308215] [2022-11-22 02:23:34,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764308215] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:23:34,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2008996771] [2022-11-22 02:23:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:34,253 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:23:34,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:23:34,255 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:23:34,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-22 02:23:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:34,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 02:23:34,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:23:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 02:23:35,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:23:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:23:37,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2008996771] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:23:37,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785345699] [2022-11-22 02:23:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:37,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:23:37,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:23:37,815 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:23:37,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-22 02:23:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:38,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 02:23:38,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:23:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 02:23:38,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:23:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:23:38,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785345699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:23:38,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:23:38,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12, 12, 12, 12] total 39 [2022-11-22 02:23:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258919579] [2022-11-22 02:23:38,663 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:23:38,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-22 02:23:38,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:23:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-22 02:23:38,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1252, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 02:23:38,667 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand has 39 states, 39 states have (on average 2.6153846153846154) internal successors, (102), 38 states have internal predecessors, (102), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-22 02:23:48,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:23:48,750 INFO L93 Difference]: Finished difference Result 331 states and 399 transitions. [2022-11-22 02:23:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-22 02:23:48,752 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.6153846153846154) internal successors, (102), 38 states have internal predecessors, (102), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) Word has length 67 [2022-11-22 02:23:48,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:23:48,754 INFO L225 Difference]: With dead ends: 331 [2022-11-22 02:23:48,754 INFO L226 Difference]: Without dead ends: 282 [2022-11-22 02:23:48,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 356 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=938, Invalid=3484, Unknown=0, NotChecked=0, Total=4422 [2022-11-22 02:23:48,756 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 907 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:23:48,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1436 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-22 02:23:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-22 02:23:48,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 189. [2022-11-22 02:23:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 156 states have (on average 1.141025641025641) internal successors, (178), 157 states have internal predecessors, (178), 23 states have call successors, (23), 12 states have call predecessors, (23), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-22 02:23:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 220 transitions. [2022-11-22 02:23:48,848 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 220 transitions. Word has length 67 [2022-11-22 02:23:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:23:48,848 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 220 transitions. [2022-11-22 02:23:48,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.6153846153846154) internal successors, (102), 38 states have internal predecessors, (102), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-22 02:23:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 220 transitions. [2022-11-22 02:23:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 02:23:48,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:23:48,850 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-22 02:23:48,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-22 02:23:49,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-22 02:23:49,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-22 02:23:49,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 02:23:49,475 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:23:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:23:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash 881349611, now seen corresponding path program 1 times [2022-11-22 02:23:49,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:23:49,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100561307] [2022-11-22 02:23:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:49,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:23:49,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:23:49,478 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:23:49,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-22 02:23:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:49,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-22 02:23:49,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:23:49,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-22 02:23:50,500 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 10 [2022-11-22 02:23:50,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-22 02:23:53,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:23:53,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2022-11-22 02:23:54,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:23:54,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:23:54,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-22 02:24:37,332 INFO L321 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2022-11-22 02:24:37,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 29 [2022-11-22 02:24:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:24:37,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:24:39,994 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:24:39,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100561307] [2022-11-22 02:24:39,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100561307] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:24:39,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [200514699] [2022-11-22 02:24:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:39,994 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:24:39,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:24:39,995 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:24:39,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-22 02:24:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:40,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-22 02:24:40,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:24:40,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-22 02:24:42,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:42,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-22 02:24:42,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:42,958 INFO L321 Elim1Store]: treesize reduction 14, result has 44.0 percent of original size [2022-11-22 02:24:42,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 39 [2022-11-22 02:24:56,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:56,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:56,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:56,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:56,512 INFO L321 Elim1Store]: treesize reduction 22, result has 33.3 percent of original size [2022-11-22 02:24:56,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 53 [2022-11-22 02:24:58,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:58,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:58,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:58,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:58,097 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-22 02:24:58,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 63 [2022-11-22 02:25:22,182 INFO L321 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2022-11-22 02:25:22,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 55 [2022-11-22 02:25:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:25:22,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:25:22,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [200514699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:25:22,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753818762] [2022-11-22 02:25:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:22,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:25:22,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:25:22,613 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:25:22,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92eefe6b-d206-43ba-bc44-d49c4ffa671f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-22 02:25:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:22,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-22 02:25:22,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:25:22,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-22 02:25:23,242 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 10 [2022-11-22 02:25:23,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:25:23,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-22 02:25:37,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:25:37,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2022-11-22 02:25:39,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:25:39,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:25:39,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-22 02:26:22,151 INFO L321 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2022-11-22 02:26:22,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 29 [2022-11-22 02:26:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:26:22,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:26:22,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753818762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:26:22,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:26:22,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23, 28] total 56 [2022-11-22 02:26:22,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518798301] [2022-11-22 02:26:22,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:26:22,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-22 02:26:22,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:26:22,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-22 02:26:22,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=3259, Unknown=6, NotChecked=0, Total=3540 [2022-11-22 02:26:22,325 INFO L87 Difference]: Start difference. First operand 189 states and 220 transitions. Second operand has 56 states, 53 states have (on average 2.3773584905660377) internal successors, (126), 52 states have internal predecessors, (126), 11 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-22 02:26:26,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:26:29,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:26:31,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:26:34,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:26:39,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:26:41,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:26:45,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:26:47,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:26:51,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:26:55,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:26:58,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:00,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:02,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:13,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:18,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:21,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:23,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:27,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:28,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:29,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:33,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:37,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:39,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:47,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:54,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:27:56,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:28:00,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:28:02,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:28:04,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:06,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:08,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []