./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- 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 [2022-11-21 16:09:55,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:09:55,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:09:55,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:09:55,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:09:55,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:09:55,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:09:55,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:09:55,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:09:55,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:09:55,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:09:55,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:09:55,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:09:55,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:09:55,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:09:55,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:09:55,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:09:55,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:09:55,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:09:55,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:09:55,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:09:55,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:09:55,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:09:55,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:09:55,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:09:55,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:09:55,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:09:55,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:09:55,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:09:55,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:09:55,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:09:55,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:09:55,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:09:55,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:09:55,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:09:55,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:09:55,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:09:55,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:09:55,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:09:55,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:09:55,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:09:55,666 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 16:09:55,713 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:09:55,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:09:55,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:09:55,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:09:55,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:09:55,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:09:55,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:09:55,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:09:55,716 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:09:55,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:09:55,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:09:55,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:09:55,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:09:55,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:09:55,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:09:55,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:09:55,717 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:09:55,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:09:55,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:09:55,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:09:55,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:09:55,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:09:55,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:09:55,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:09:55,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:09:55,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:09:55,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:09:55,722 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:09:55,723 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:09:55,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:09:55,724 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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2022-11-21 16:09:55,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:09:56,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:09:56,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:09:56,011 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:09:56,012 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:09:56,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-21 16:09:59,078 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:09:59,580 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:09:59,580 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-21 16:09:59,628 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/data/c4390c02b/5c76982d5bf7420b9516822b67ac4988/FLAGf7a4a1246 [2022-11-21 16:09:59,646 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/data/c4390c02b/5c76982d5bf7420b9516822b67ac4988 [2022-11-21 16:09:59,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:09:59,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:09:59,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:09:59,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:09:59,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:09:59,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:09:59" (1/1) ... [2022-11-21 16:09:59,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c8647c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:59, skipping insertion in model container [2022-11-21 16:09:59,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:09:59" (1/1) ... [2022-11-21 16:09:59,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:09:59,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:10:00,061 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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-21 16:10:00,071 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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-21 16:10:01,140 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,141 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,142 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,143 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,144 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,166 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,167 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,169 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,170 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,172 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,174 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,175 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,175 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,747 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-21 16:10:01,749 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-21 16:10:01,750 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-21 16:10:01,751 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-21 16:10:01,753 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-21 16:10:01,754 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-21 16:10:01,755 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-21 16:10:01,755 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-21 16:10:01,756 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-21 16:10:01,757 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-21 16:10:01,962 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-21 16:10:01,987 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,988 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:01,994 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,001 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,076 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,077 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,078 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,078 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,079 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,082 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,083 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,084 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,085 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,086 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,087 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,087 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,087 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,094 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,098 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,099 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,099 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,140 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,140 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,148 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,149 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,150 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:10:02,202 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:10:02,216 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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-21 16:10:02,217 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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-21 16:10:02,271 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,274 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,275 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,275 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,276 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,291 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,292 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,293 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,294 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,295 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,297 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,298 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,298 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,354 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-21 16:10:02,355 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-21 16:10:02,355 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-21 16:10:02,356 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-21 16:10:02,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-21 16:10:02,361 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-21 16:10:02,361 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-21 16:10:02,362 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-21 16:10:02,363 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-21 16:10:02,364 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-21 16:10:02,404 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-21 16:10:02,431 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,431 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,432 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,441 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,477 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,481 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,482 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,482 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,483 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,483 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,484 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,484 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,485 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,486 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,486 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,486 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,487 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,487 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,488 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,488 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,489 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,491 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,492 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,501 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,502 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,502 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:10:02,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:10:02,811 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:10:02,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:02 WrapperNode [2022-11-21 16:10:02,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:10:02,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:10:02,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:10:02,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:10:02,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:02" (1/1) ... [2022-11-21 16:10:02,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:02" (1/1) ... [2022-11-21 16:10:02,971 INFO L138 Inliner]: procedures = 697, calls = 1904, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 839 [2022-11-21 16:10:02,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:10:02,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:10:02,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:10:02,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:10:02,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:02" (1/1) ... [2022-11-21 16:10:02,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:02" (1/1) ... [2022-11-21 16:10:02,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:02" (1/1) ... [2022-11-21 16:10:03,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:02" (1/1) ... [2022-11-21 16:10:03,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:02" (1/1) ... [2022-11-21 16:10:03,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:02" (1/1) ... [2022-11-21 16:10:03,085 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:02" (1/1) ... [2022-11-21 16:10:03,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:02" (1/1) ... [2022-11-21 16:10:03,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:10:03,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:10:03,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:10:03,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:10:03,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:02" (1/1) ... [2022-11-21 16:10:03,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:10:03,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:10:03,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:10:03,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:10:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-21 16:10:03,219 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-21 16:10:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-21 16:10:03,220 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-21 16:10:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:10:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-21 16:10:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-21 16:10:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-21 16:10:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-21 16:10:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-21 16:10:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-21 16:10:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:10:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-21 16:10:03,222 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-21 16:10:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-21 16:10:03,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-21 16:10:03,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:10:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:10:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 16:10:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-21 16:10:03,227 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-21 16:10:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:10:03,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:10:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-21 16:10:03,229 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-21 16:10:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2022-11-21 16:10:03,235 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2022-11-21 16:10:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-21 16:10:03,235 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-21 16:10:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-21 16:10:03,236 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-21 16:10:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-21 16:10:03,236 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-21 16:10:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-21 16:10:03,236 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-21 16:10:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 16:10:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 16:10:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-21 16:10:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-21 16:10:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:10:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 16:10:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2022-11-21 16:10:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2022-11-21 16:10:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 16:10:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-21 16:10:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-21 16:10:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-21 16:10:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-21 16:10:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-21 16:10:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-21 16:10:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:10:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-21 16:10:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-21 16:10:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-21 16:10:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-21 16:10:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-21 16:10:03,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-21 16:10:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:10:03,667 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:10:03,670 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:10:04,977 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:10:04,987 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:10:04,987 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-21 16:10:04,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:10:04 BoogieIcfgContainer [2022-11-21 16:10:04,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:10:04,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:10:04,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:10:04,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:10:04,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:09:59" (1/3) ... [2022-11-21 16:10:04,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3403bfae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:10:04, skipping insertion in model container [2022-11-21 16:10:04,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:02" (2/3) ... [2022-11-21 16:10:04,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3403bfae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:10:04, skipping insertion in model container [2022-11-21 16:10:04,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:10:04" (3/3) ... [2022-11-21 16:10:04,999 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2022-11-21 16:10:05,019 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:10:05,019 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:10:05,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:10:05,112 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=PETRI_NET, 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;@650e501a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:10:05,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:10:05,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 197 states have (on average 1.233502538071066) internal successors, (243), 198 states have internal predecessors, (243), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-21 16:10:05,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-21 16:10:05,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:10:05,151 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:05,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:10:05,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:05,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1627804587, now seen corresponding path program 1 times [2022-11-21 16:10:05,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:05,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104833694] [2022-11-21 16:10:05,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:05,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:10:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:10:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:05,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:10:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 16:10:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 16:10:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 16:10:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 16:10:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 16:10:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 16:10:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 16:10:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:10:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 16:10:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 16:10:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:10:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 16:10:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 16:10:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 16:10:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 16:10:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 16:10:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 16:10:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-21 16:10:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 16:10:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 16:10:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-21 16:10:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-21 16:10:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-21 16:10:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:06,408 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-21 16:10:06,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:06,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104833694] [2022-11-21 16:10:06,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104833694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:10:06,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:10:06,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:10:06,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441780404] [2022-11-21 16:10:06,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:10:06,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:10:06,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:06,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:10:06,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:10:06,475 INFO L87 Difference]: Start difference. First operand has 326 states, 197 states have (on average 1.233502538071066) internal successors, (243), 198 states have internal predecessors, (243), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-21 16:10:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:10:08,470 INFO L93 Difference]: Finished difference Result 731 states and 1164 transitions. [2022-11-21 16:10:08,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:10:08,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2022-11-21 16:10:08,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:10:08,501 INFO L225 Difference]: With dead ends: 731 [2022-11-21 16:10:08,501 INFO L226 Difference]: Without dead ends: 423 [2022-11-21 16:10:08,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:10:08,526 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 130 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:10:08,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 576 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 16:10:08,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-21 16:10:08,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 321. [2022-11-21 16:10:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 193 states have (on average 1.2020725388601037) internal successors, (232), 194 states have internal predecessors, (232), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-21 16:10:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 439 transitions. [2022-11-21 16:10:08,675 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 439 transitions. Word has length 156 [2022-11-21 16:10:08,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:10:08,676 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 439 transitions. [2022-11-21 16:10:08,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-21 16:10:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 439 transitions. [2022-11-21 16:10:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-21 16:10:08,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:10:08,697 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:08,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:10:08,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:10:08,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:08,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1159929871, now seen corresponding path program 1 times [2022-11-21 16:10:08,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:08,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163043133] [2022-11-21 16:10:08,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:08,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:10:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:10:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:10:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 16:10:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 16:10:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 16:10:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 16:10:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 16:10:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 16:10:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 16:10:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:10:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 16:10:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 16:10:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:10:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 16:10:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 16:10:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 16:10:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 16:10:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 16:10:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 16:10:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-21 16:10:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 16:10:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 16:10:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-21 16:10:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-21 16:10:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-21 16:10:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-11-21 16:10:09,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:09,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163043133] [2022-11-21 16:10:09,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163043133] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:10:09,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262860874] [2022-11-21 16:10:09,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:09,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:10:09,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:10:09,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:10:09,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:10:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:10,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:10:10,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:10:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-21 16:10:10,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:10:10,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262860874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:10:10,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:10:10,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-21 16:10:10,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80329678] [2022-11-21 16:10:10,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:10:10,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:10:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:10:10,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:10:10,587 INFO L87 Difference]: Start difference. First operand 321 states and 439 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-21 16:10:10,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:10:10,913 INFO L93 Difference]: Finished difference Result 596 states and 820 transitions. [2022-11-21 16:10:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:10:10,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2022-11-21 16:10:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:10:10,930 INFO L225 Difference]: With dead ends: 596 [2022-11-21 16:10:10,930 INFO L226 Difference]: Without dead ends: 323 [2022-11-21 16:10:10,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:10:10,938 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 456 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:10:10,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1495 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:10:10,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-21 16:10:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-11-21 16:10:11,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 194 states have (on average 1.2010309278350515) internal successors, (233), 196 states have internal predecessors, (233), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2022-11-21 16:10:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 444 transitions. [2022-11-21 16:10:11,024 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 444 transitions. Word has length 156 [2022-11-21 16:10:11,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:10:11,025 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 444 transitions. [2022-11-21 16:10:11,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-21 16:10:11,026 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 444 transitions. [2022-11-21 16:10:11,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-21 16:10:11,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:10:11,031 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:11,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:10:11,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:10:11,241 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:10:11,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:11,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1288218285, now seen corresponding path program 1 times [2022-11-21 16:10:11,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:11,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547067912] [2022-11-21 16:10:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:11,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:11,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:10:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:11,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:10:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:10:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 16:10:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:11,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 16:10:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:11,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 16:10:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:11,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 16:10:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:11,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 16:10:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:11,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 16:10:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:11,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 16:10:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:11,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:10:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 16:10:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 16:10:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:10:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 16:10:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 16:10:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:10:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 16:10:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 16:10:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 16:10:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 16:10:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 16:10:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 16:10:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-21 16:10:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-21 16:10:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-21 16:10:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-21 16:10:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-21 16:10:12,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:12,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547067912] [2022-11-21 16:10:12,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547067912] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:10:12,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062153027] [2022-11-21 16:10:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:12,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:10:12,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:10:12,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:10:12,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:10:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 2376 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:10:12,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:10:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-21 16:10:13,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:10:13,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062153027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:10:13,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:10:13,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-21 16:10:13,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866621374] [2022-11-21 16:10:13,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:10:13,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:10:13,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:13,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:10:13,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:10:13,114 INFO L87 Difference]: Start difference. First operand 323 states and 444 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-21 16:10:13,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:10:13,656 INFO L93 Difference]: Finished difference Result 619 states and 867 transitions. [2022-11-21 16:10:13,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:10:13,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2022-11-21 16:10:13,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:10:13,661 INFO L225 Difference]: With dead ends: 619 [2022-11-21 16:10:13,661 INFO L226 Difference]: Without dead ends: 344 [2022-11-21 16:10:13,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:10:13,664 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 518 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:10:13,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 2155 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 16:10:13,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-21 16:10:13,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 342. [2022-11-21 16:10:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2022-11-21 16:10:13,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-21 16:10:13,698 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 164 [2022-11-21 16:10:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:10:13,698 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-21 16:10:13,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-21 16:10:13,699 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-21 16:10:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 16:10:13,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:10:13,702 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:13,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:10:13,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:10:13,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:10:13,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:13,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1645223367, now seen corresponding path program 1 times [2022-11-21 16:10:13,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:13,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993752645] [2022-11-21 16:10:13,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:13,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:14,004 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:10:14,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045421671] [2022-11-21 16:10:14,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:14,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:10:14,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:10:14,006 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:10:14,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:10:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:14,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:10:14,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:10:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-21 16:10:14,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:10:14,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:14,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993752645] [2022-11-21 16:10:14,766 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:10:14,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045421671] [2022-11-21 16:10:14,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045421671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:10:14,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:10:14,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:10:14,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626061579] [2022-11-21 16:10:14,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:10:14,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:10:14,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:14,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:10:14,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:10:14,770 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-21 16:10:15,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:10:15,184 INFO L93 Difference]: Finished difference Result 644 states and 916 transitions. [2022-11-21 16:10:15,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:10:15,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 179 [2022-11-21 16:10:15,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:10:15,189 INFO L225 Difference]: With dead ends: 644 [2022-11-21 16:10:15,189 INFO L226 Difference]: Without dead ends: 350 [2022-11-21 16:10:15,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:10:15,193 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 480 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:10:15,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1829 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:10:15,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-21 16:10:15,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 342. [2022-11-21 16:10:15,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2022-11-21 16:10:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-21 16:10:15,256 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 179 [2022-11-21 16:10:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:10:15,257 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-21 16:10:15,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-21 16:10:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-21 16:10:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-21 16:10:15,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:10:15,266 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:15,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:10:15,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:10:15,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:10:15,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:15,477 INFO L85 PathProgramCache]: Analyzing trace with hash 706739126, now seen corresponding path program 1 times [2022-11-21 16:10:15,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:15,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103145549] [2022-11-21 16:10:15,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:15,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:15,614 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:10:15,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98144181] [2022-11-21 16:10:15,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:15,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:10:15,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:10:15,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:10:15,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:10:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:16,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:10:16,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:10:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-21 16:10:16,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:10:16,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:16,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103145549] [2022-11-21 16:10:16,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:10:16,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98144181] [2022-11-21 16:10:16,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98144181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:10:16,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:10:16,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:10:16,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654985079] [2022-11-21 16:10:16,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:10:16,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:10:16,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:16,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:10:16,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:10:16,430 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-21 16:10:17,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:10:17,081 INFO L93 Difference]: Finished difference Result 654 states and 929 transitions. [2022-11-21 16:10:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:10:17,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 195 [2022-11-21 16:10:17,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:10:17,086 INFO L225 Difference]: With dead ends: 654 [2022-11-21 16:10:17,086 INFO L226 Difference]: Without dead ends: 360 [2022-11-21 16:10:17,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:10:17,089 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 551 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:10:17,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 2456 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 16:10:17,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-21 16:10:17,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 342. [2022-11-21 16:10:17,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2022-11-21 16:10:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-21 16:10:17,114 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 195 [2022-11-21 16:10:17,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:10:17,115 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-21 16:10:17,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-21 16:10:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-21 16:10:17,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-21 16:10:17,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:10:17,119 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:17,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:10:17,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:10:17,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:10:17,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:17,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1820952612, now seen corresponding path program 2 times [2022-11-21 16:10:17,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:17,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452706143] [2022-11-21 16:10:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:17,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:17,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:10:17,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835124603] [2022-11-21 16:10:17,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:10:17,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:10:17,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:10:17,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:10:17,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:10:18,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:10:18,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:10:18,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 379 conjunts are in the unsatisfiable core [2022-11-21 16:10:18,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:10:19,211 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:10:19,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 22 [2022-11-21 16:10:23,339 INFO L217 Elim1Store]: Index analysis took 234 ms [2022-11-21 16:10:27,320 INFO L321 Elim1Store]: treesize reduction 652, result has 50.0 percent of original size [2022-11-21 16:10:27,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 164 select indices, 164 select index equivalence classes, 13203 disjoint index pairs (out of 13366 index pairs), introduced 164 new quantified variables, introduced 163 case distinctions, treesize of input 821 treesize of output 1145 [2022-11-21 16:11:38,378 WARN L718 sPolynomialRelations]: Constructing 2147483647(two to the power of 163 dual juncts. [2022-11-21 16:11:38,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:11:38,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452706143] [2022-11-21 16:11:38,378 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:11:38,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835124603] [2022-11-21 16:11:38,379 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-21 16:11:38,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:11:38,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:11:38,588 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.OutOfMemoryError: Requested array size exceeds VM limit at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:720) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildBoundConstraint(DualJunctionTir.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateConjuncts(DualJunctionTir.java:193) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne(DualJunctionTir.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminate(DualJunctionTir.java:126) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) [2022-11-21 16:11:38,595 INFO L158 Benchmark]: Toolchain (without parser) took 98942.05ms. Allocated memory was 161.5MB in the beginning and 673.2MB in the end (delta: 511.7MB). Free memory was 109.8MB in the beginning and 243.5MB in the end (delta: -133.8MB). Peak memory consumption was 379.2MB. Max. memory is 16.1GB. [2022-11-21 16:11:38,595 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 161.5MB. Free memory was 127.7MB in the beginning and 127.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:11:38,596 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3157.31ms. Allocated memory was 161.5MB in the beginning and 207.6MB in the end (delta: 46.1MB). Free memory was 109.8MB in the beginning and 125.2MB in the end (delta: -15.5MB). Peak memory consumption was 90.6MB. Max. memory is 16.1GB. [2022-11-21 16:11:38,596 INFO L158 Benchmark]: Boogie Procedure Inliner took 158.60ms. Allocated memory is still 207.6MB. Free memory was 125.2MB in the beginning and 114.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:11:38,597 INFO L158 Benchmark]: Boogie Preprocessor took 154.47ms. Allocated memory is still 207.6MB. Free memory was 114.8MB in the beginning and 106.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 16:11:38,599 INFO L158 Benchmark]: RCFGBuilder took 1863.18ms. Allocated memory is still 207.6MB. Free memory was 106.4MB in the beginning and 130.4MB in the end (delta: -24.0MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2022-11-21 16:11:38,599 INFO L158 Benchmark]: TraceAbstraction took 93601.36ms. Allocated memory was 207.6MB in the beginning and 673.2MB in the end (delta: 465.6MB). Free memory was 130.4MB in the beginning and 243.5MB in the end (delta: -113.1MB). Peak memory consumption was 351.4MB. Max. memory is 16.1GB. [2022-11-21 16:11:38,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 161.5MB. Free memory was 127.7MB in the beginning and 127.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3157.31ms. Allocated memory was 161.5MB in the beginning and 207.6MB in the end (delta: 46.1MB). Free memory was 109.8MB in the beginning and 125.2MB in the end (delta: -15.5MB). Peak memory consumption was 90.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 158.60ms. Allocated memory is still 207.6MB. Free memory was 125.2MB in the beginning and 114.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 154.47ms. Allocated memory is still 207.6MB. Free memory was 114.8MB in the beginning and 106.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1863.18ms. Allocated memory is still 207.6MB. Free memory was 106.4MB in the beginning and 130.4MB in the end (delta: -24.0MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. * TraceAbstraction took 93601.36ms. Allocated memory was 207.6MB in the beginning and 673.2MB in the end (delta: 465.6MB). Free memory was 130.4MB in the beginning and 243.5MB in the end (delta: -113.1MB). Peak memory consumption was 351.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: OutOfMemoryError: Requested array size exceeds VM limit de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: OutOfMemoryError: Requested array size exceeds VM limit: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:720) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-21 16:11:38,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- 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 [2022-11-21 16:11:41,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:11:41,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:11:41,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:11:41,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:11:41,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:11:41,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:11:41,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:11:41,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:11:41,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:11:41,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:11:41,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:11:41,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:11:41,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:11:41,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:11:41,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:11:41,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:11:41,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:11:41,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:11:41,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:11:41,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:11:41,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:11:41,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:11:41,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:11:41,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:11:41,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:11:41,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:11:41,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:11:41,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:11:41,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:11:41,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:11:41,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:11:41,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:11:41,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:11:41,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:11:41,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:11:41,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:11:41,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:11:41,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:11:41,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:11:41,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:11:41,277 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-21 16:11:41,320 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:11:41,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:11:41,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:11:41,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:11:41,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:11:41,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:11:41,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:11:41,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:11:41,327 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:11:41,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:11:41,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:11:41,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:11:41,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:11:41,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:11:41,329 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:11:41,329 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 16:11:41,330 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 16:11:41,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:11:41,330 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:11:41,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:11:41,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:11:41,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:11:41,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:11:41,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:11:41,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:11:41,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:11:41,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:11:41,332 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 16:11:41,332 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 16:11:41,333 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:11:41,333 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:11:41,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:11:41,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 16:11:41,334 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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2022-11-21 16:11:41,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:11:41,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:11:41,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:11:41,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:11:41,813 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:11:41,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-21 16:11:44,984 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:11:45,533 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:11:45,538 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-21 16:11:45,594 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/data/4cd9764d7/9ac5ec57126442e3a21ee3fb5e696a08/FLAG26e54f4bd [2022-11-21 16:11:45,619 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/data/4cd9764d7/9ac5ec57126442e3a21ee3fb5e696a08 [2022-11-21 16:11:45,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:11:45,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:11:45,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:11:45,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:11:45,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:11:45,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:11:45" (1/1) ... [2022-11-21 16:11:45,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e4d521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:45, skipping insertion in model container [2022-11-21 16:11:45,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:11:45" (1/1) ... [2022-11-21 16:11:45,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:11:45,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:11:46,144 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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-21 16:11:46,152 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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-21 16:11:47,123 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,130 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,131 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,133 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,135 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,161 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,162 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,165 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,169 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,175 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,178 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,180 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,181 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,670 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-21 16:11:47,672 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-21 16:11:47,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-21 16:11:47,680 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-21 16:11:47,683 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-21 16:11:47,685 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-21 16:11:47,687 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-21 16:11:47,688 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-21 16:11:47,703 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-21 16:11:47,704 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-21 16:11:47,873 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-21 16:11:47,901 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,902 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,908 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:47,917 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,012 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,013 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,016 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,016 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,017 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,018 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,018 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,019 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,020 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,020 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,021 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,021 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,022 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,025 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,026 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,026 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,027 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,031 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,032 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,042 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,044 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,044 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:11:48,112 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-21 16:11:48,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:11:48,213 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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-21 16:11:48,214 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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-21 16:11:48,278 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,283 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,284 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,284 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,285 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,293 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,293 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,295 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,295 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,296 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,297 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,298 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,298 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,336 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-21 16:11:48,337 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-21 16:11:48,338 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-21 16:11:48,339 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-21 16:11:48,340 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-21 16:11:48,341 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-21 16:11:48,341 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-21 16:11:48,342 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-21 16:11:48,343 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-21 16:11:48,343 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-21 16:11:48,368 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-21 16:11:48,385 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,385 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,387 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,392 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,422 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,423 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,423 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,423 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,424 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,424 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,425 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,426 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,426 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,426 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,427 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,427 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,428 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,428 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,429 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,429 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,430 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,433 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,434 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,440 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,441 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,442 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:11:48,479 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:11:48,529 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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-21 16:11:48,535 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_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-21 16:11:48,586 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,587 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,587 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,588 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,589 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,597 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,598 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,599 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,599 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,600 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,601 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,602 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,602 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,651 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-21 16:11:48,652 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-21 16:11:48,653 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-21 16:11:48,653 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-21 16:11:48,655 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-21 16:11:48,656 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-21 16:11:48,657 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-21 16:11:48,658 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-21 16:11:48,658 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-21 16:11:48,659 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-21 16:11:48,692 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-21 16:11:48,706 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,707 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,708 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,712 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,745 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,753 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,753 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,754 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,754 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,755 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,755 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,757 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,758 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,758 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,760 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,761 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,765 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,766 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,767 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,767 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,768 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,770 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,772 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,825 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,825 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,826 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 16:11:48,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:11:49,091 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:11:49,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:49 WrapperNode [2022-11-21 16:11:49,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:11:49,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:11:49,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:11:49,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:11:49,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:49" (1/1) ... [2022-11-21 16:11:49,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:49" (1/1) ... [2022-11-21 16:11:49,257 INFO L138 Inliner]: procedures = 717, calls = 1904, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 833 [2022-11-21 16:11:49,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:11:49,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:11:49,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:11:49,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:11:49,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:49" (1/1) ... [2022-11-21 16:11:49,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:49" (1/1) ... [2022-11-21 16:11:49,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:49" (1/1) ... [2022-11-21 16:11:49,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:49" (1/1) ... [2022-11-21 16:11:49,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:49" (1/1) ... [2022-11-21 16:11:49,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:49" (1/1) ... [2022-11-21 16:11:49,384 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:49" (1/1) ... [2022-11-21 16:11:49,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:49" (1/1) ... [2022-11-21 16:11:49,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:11:49,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:11:49,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:11:49,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:11:49,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:49" (1/1) ... [2022-11-21 16:11:49,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:11:49,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:11:49,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:11:49,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:11:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-21 16:11:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-21 16:11:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-21 16:11:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-21 16:11:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:11:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-21 16:11:49,524 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-21 16:11:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-21 16:11:49,524 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-21 16:11:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-21 16:11:49,524 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-21 16:11:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 16:11:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-21 16:11:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-21 16:11:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-21 16:11:49,526 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-21 16:11:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-21 16:11:49,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-21 16:11:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-21 16:11:49,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-21 16:11:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:11:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:11:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 16:11:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-21 16:11:49,527 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-21 16:11:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:11:49,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:11:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-21 16:11:49,529 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-21 16:11:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-21 16:11:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-21 16:11:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2022-11-21 16:11:49,529 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2022-11-21 16:11:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-21 16:11:49,530 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-21 16:11:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-21 16:11:49,530 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-21 16:11:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-21 16:11:49,530 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-21 16:11:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-21 16:11:49,531 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-21 16:11:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 16:11:49,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 16:11:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-21 16:11:49,533 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-21 16:11:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:11:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 16:11:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-21 16:11:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-21 16:11:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2022-11-21 16:11:49,534 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2022-11-21 16:11:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 16:11:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-21 16:11:49,535 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-21 16:11:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-21 16:11:49,535 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-21 16:11:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-21 16:11:49,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-21 16:11:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-21 16:11:49,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-21 16:11:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-21 16:11:49,536 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-21 16:11:49,990 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:11:49,992 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:11:52,840 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:11:52,850 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:11:52,850 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-21 16:11:52,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:11:52 BoogieIcfgContainer [2022-11-21 16:11:52,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:11:52,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:11:52,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:11:52,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:11:52,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:11:45" (1/3) ... [2022-11-21 16:11:52,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c1c3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:11:52, skipping insertion in model container [2022-11-21 16:11:52,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:49" (2/3) ... [2022-11-21 16:11:52,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c1c3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:11:52, skipping insertion in model container [2022-11-21 16:11:52,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:11:52" (3/3) ... [2022-11-21 16:11:52,862 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2022-11-21 16:11:52,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:11:52,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:11:52,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:11:52,949 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=PETRI_NET, 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;@1faff202, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:11:52,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:11:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 195 states have (on average 1.235897435897436) internal successors, (241), 196 states have internal predecessors, (241), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-21 16:11:52,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-21 16:11:52,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:11:52,975 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:11:52,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:11:52,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:11:52,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1926734945, now seen corresponding path program 1 times [2022-11-21 16:11:53,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:11:53,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423063976] [2022-11-21 16:11:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:11:53,002 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 [2022-11-21 16:11:53,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:11:53,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:11:53,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:11:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:54,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-21 16:11:54,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:11:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-21 16:11:54,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:11:54,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:11:54,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423063976] [2022-11-21 16:11:54,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423063976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:11:54,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:11:54,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:11:54,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879445096] [2022-11-21 16:11:54,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:11:54,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:11:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:11:54,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:11:54,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:11:54,240 INFO L87 Difference]: Start difference. First operand has 324 states, 195 states have (on average 1.235897435897436) internal successors, (241), 196 states have internal predecessors, (241), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-21 16:11:54,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:11:54,328 INFO L93 Difference]: Finished difference Result 625 states and 944 transitions. [2022-11-21 16:11:54,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:11:54,336 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2022-11-21 16:11:54,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:11:54,347 INFO L225 Difference]: With dead ends: 625 [2022-11-21 16:11:54,351 INFO L226 Difference]: Without dead ends: 319 [2022-11-21 16:11:54,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:11:54,366 INFO L413 NwaCegarLoop]: 442 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, 442 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 [2022-11-21 16:11:54,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:11:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-21 16:11:54,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2022-11-21 16:11:54,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 191 states have (on average 1.2041884816753927) internal successors, (230), 192 states have internal predecessors, (230), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-21 16:11:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 437 transitions. [2022-11-21 16:11:54,487 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 437 transitions. Word has length 156 [2022-11-21 16:11:54,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:11:54,489 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 437 transitions. [2022-11-21 16:11:54,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-21 16:11:54,490 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 437 transitions. [2022-11-21 16:11:54,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-21 16:11:54,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:11:54,507 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:11:54,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:11:54,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:11:54,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:11:54,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:11:54,723 INFO L85 PathProgramCache]: Analyzing trace with hash -860999513, now seen corresponding path program 1 times [2022-11-21 16:11:54,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:11:54,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095805005] [2022-11-21 16:11:54,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:11:54,726 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 [2022-11-21 16:11:54,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:11:54,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:11:54,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:11:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:55,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:11:55,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:11:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-21 16:11:56,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:11:56,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:11:56,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095805005] [2022-11-21 16:11:56,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095805005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:11:56,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:11:56,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:11:56,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623005629] [2022-11-21 16:11:56,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:11:56,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:11:56,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:11:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:11:56,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:11:56,079 INFO L87 Difference]: Start difference. First operand 319 states and 437 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-21 16:11:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:11:56,555 INFO L93 Difference]: Finished difference Result 592 states and 816 transitions. [2022-11-21 16:11:56,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:11:56,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2022-11-21 16:11:56,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:11:56,567 INFO L225 Difference]: With dead ends: 592 [2022-11-21 16:11:56,569 INFO L226 Difference]: Without dead ends: 321 [2022-11-21 16:11:56,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:11:56,573 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 47 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:11:56,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1574 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 16:11:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-21 16:11:56,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-11-21 16:11:56,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 192 states have (on average 1.203125) internal successors, (231), 194 states have internal predecessors, (231), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2022-11-21 16:11:56,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 442 transitions. [2022-11-21 16:11:56,619 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 442 transitions. Word has length 156 [2022-11-21 16:11:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:11:56,620 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 442 transitions. [2022-11-21 16:11:56,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-21 16:11:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 442 transitions. [2022-11-21 16:11:56,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-21 16:11:56,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:11:56,623 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:11:56,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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)] Ended with exit code 0 [2022-11-21 16:11:56,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:11:56,840 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:11:56,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:11:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1740163981, now seen corresponding path program 1 times [2022-11-21 16:11:56,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:11:56,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485748274] [2022-11-21 16:11:56,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:11:56,844 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 [2022-11-21 16:11:56,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:11:56,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:11:56,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:11:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:57,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:11:57,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:11:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-21 16:11:58,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:11:58,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:11:58,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485748274] [2022-11-21 16:11:58,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485748274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:11:58,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:11:58,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:11:58,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480177923] [2022-11-21 16:11:58,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:11:58,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:11:58,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:11:58,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:11:58,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:11:58,117 INFO L87 Difference]: Start difference. First operand 321 states and 442 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-21 16:11:59,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:11:59,238 INFO L93 Difference]: Finished difference Result 615 states and 863 transitions. [2022-11-21 16:11:59,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:11:59,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2022-11-21 16:11:59,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:11:59,243 INFO L225 Difference]: With dead ends: 615 [2022-11-21 16:11:59,243 INFO L226 Difference]: Without dead ends: 342 [2022-11-21 16:11:59,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:11:59,246 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 99 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:11:59,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 2276 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 16:11:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-21 16:11:59,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 340. [2022-11-21 16:11:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 208 states have (on average 1.2163461538461537) internal successors, (253), 210 states have internal predecessors, (253), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2022-11-21 16:11:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 479 transitions. [2022-11-21 16:11:59,292 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 479 transitions. Word has length 164 [2022-11-21 16:11:59,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:11:59,294 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 479 transitions. [2022-11-21 16:11:59,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-21 16:11:59,294 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 479 transitions. [2022-11-21 16:11:59,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 16:11:59,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:11:59,300 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:11:59,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:11:59,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:11:59,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:11:59,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:11:59,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2064550921, now seen corresponding path program 1 times [2022-11-21 16:11:59,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:11:59,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868603725] [2022-11-21 16:11:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:11:59,529 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 [2022-11-21 16:11:59,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:11:59,530 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:11:59,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:00,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1587 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:12:00,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:12:00,920 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-21 16:12:00,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:12:00,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:12:00,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868603725] [2022-11-21 16:12:00,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868603725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:12:00,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:12:00,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:12:00,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035483667] [2022-11-21 16:12:00,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:12:00,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:12:00,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:12:00,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:12:00,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:12:00,924 INFO L87 Difference]: Start difference. First operand 340 states and 479 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-21 16:12:01,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:12:01,639 INFO L93 Difference]: Finished difference Result 640 states and 912 transitions. [2022-11-21 16:12:01,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:12:01,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 179 [2022-11-21 16:12:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:12:01,647 INFO L225 Difference]: With dead ends: 640 [2022-11-21 16:12:01,647 INFO L226 Difference]: Without dead ends: 348 [2022-11-21 16:12:01,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:12:01,650 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 70 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:12:01,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1931 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 16:12:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-21 16:12:01,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 340. [2022-11-21 16:12:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 208 states have (on average 1.2163461538461537) internal successors, (253), 210 states have internal predecessors, (253), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2022-11-21 16:12:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 479 transitions. [2022-11-21 16:12:01,694 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 479 transitions. Word has length 179 [2022-11-21 16:12:01,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:12:01,695 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 479 transitions. [2022-11-21 16:12:01,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-21 16:12:01,695 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 479 transitions. [2022-11-21 16:12:01,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-21 16:12:01,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:12:01,700 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:12:01,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:01,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:01,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:12:01,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:12:01,925 INFO L85 PathProgramCache]: Analyzing trace with hash 587208436, now seen corresponding path program 1 times [2022-11-21 16:12:01,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:12:01,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739772427] [2022-11-21 16:12:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:12:01,927 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 [2022-11-21 16:12:01,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:12:01,928 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:12:01,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:03,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:12:03,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:12:03,409 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-21 16:12:03,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:12:03,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:12:03,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739772427] [2022-11-21 16:12:03,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739772427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:12:03,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:12:03,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:12:03,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142617634] [2022-11-21 16:12:03,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:12:03,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:12:03,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:12:03,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:12:03,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:12:03,413 INFO L87 Difference]: Start difference. First operand 340 states and 479 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-21 16:12:04,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:12:04,981 INFO L93 Difference]: Finished difference Result 662 states and 941 transitions. [2022-11-21 16:12:04,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:12:04,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 195 [2022-11-21 16:12:04,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:12:04,986 INFO L225 Difference]: With dead ends: 662 [2022-11-21 16:12:04,986 INFO L226 Difference]: Without dead ends: 370 [2022-11-21 16:12:04,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:12:04,988 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 142 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:12:04,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2641 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 16:12:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-21 16:12:05,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 352. [2022-11-21 16:12:05,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 218 states have (on average 1.224770642201835) internal successors, (267), 220 states have internal predecessors, (267), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2022-11-21 16:12:05,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 495 transitions. [2022-11-21 16:12:05,011 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 495 transitions. Word has length 195 [2022-11-21 16:12:05,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:12:05,012 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 495 transitions. [2022-11-21 16:12:05,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-21 16:12:05,013 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 495 transitions. [2022-11-21 16:12:05,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-21 16:12:05,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:12:05,016 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:12:05,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:05,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:05,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:12:05,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:12:05,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1829094874, now seen corresponding path program 2 times [2022-11-21 16:12:05,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:12:05,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741164878] [2022-11-21 16:12:05,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:12:05,242 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 [2022-11-21 16:12:05,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:12:05,243 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:12:05,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:08,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:12:08,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:12:08,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 1747 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:12:08,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:12:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-21 16:12:09,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:12:09,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:12:09,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741164878] [2022-11-21 16:12:09,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741164878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:12:09,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:12:09,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:12:09,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279176734] [2022-11-21 16:12:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:12:09,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:12:09,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:12:09,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:12:09,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:12:09,374 INFO L87 Difference]: Start difference. First operand 352 states and 495 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-21 16:12:15,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:12:15,315 INFO L93 Difference]: Finished difference Result 692 states and 993 transitions. [2022-11-21 16:12:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:12:15,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 210 [2022-11-21 16:12:15,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:12:15,322 INFO L225 Difference]: With dead ends: 692 [2022-11-21 16:12:15,322 INFO L226 Difference]: Without dead ends: 388 [2022-11-21 16:12:15,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:12:15,326 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 23 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:12:15,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2016 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-21 16:12:15,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-21 16:12:15,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 360. [2022-11-21 16:12:15,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 226 states have (on average 1.2256637168141593) internal successors, (277), 228 states have internal predecessors, (277), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2022-11-21 16:12:15,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 505 transitions. [2022-11-21 16:12:15,365 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 505 transitions. Word has length 210 [2022-11-21 16:12:15,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:12:15,366 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 505 transitions. [2022-11-21 16:12:15,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-21 16:12:15,366 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 505 transitions. [2022-11-21 16:12:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-21 16:12:15,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:12:15,370 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:12:15,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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)] Ended with exit code 0 [2022-11-21 16:12:15,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:15,592 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:12:15,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:12:15,592 INFO L85 PathProgramCache]: Analyzing trace with hash -731767972, now seen corresponding path program 1 times [2022-11-21 16:12:15,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:12:15,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767404684] [2022-11-21 16:12:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:12:15,594 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 [2022-11-21 16:12:15,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:12:15,595 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:12:15,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:17,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:12:17,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:12:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-21 16:12:17,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:12:17,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:12:17,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767404684] [2022-11-21 16:12:17,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767404684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:12:17,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:12:17,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:12:17,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101802823] [2022-11-21 16:12:17,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:12:17,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:12:17,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:12:17,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:12:17,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:12:17,938 INFO L87 Difference]: Start difference. First operand 360 states and 505 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-21 16:12:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:12:22,220 INFO L93 Difference]: Finished difference Result 702 states and 1003 transitions. [2022-11-21 16:12:22,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:12:22,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 210 [2022-11-21 16:12:22,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:12:22,226 INFO L225 Difference]: With dead ends: 702 [2022-11-21 16:12:22,226 INFO L226 Difference]: Without dead ends: 390 [2022-11-21 16:12:22,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:12:22,229 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 20 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:12:22,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2438 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-21 16:12:22,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-21 16:12:22,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 364. [2022-11-21 16:12:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 230 states have (on average 1.2217391304347827) internal successors, (281), 232 states have internal predecessors, (281), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2022-11-21 16:12:22,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 509 transitions. [2022-11-21 16:12:22,254 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 509 transitions. Word has length 210 [2022-11-21 16:12:22,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:12:22,255 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 509 transitions. [2022-11-21 16:12:22,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-21 16:12:22,256 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 509 transitions. [2022-11-21 16:12:22,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-21 16:12:22,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:12:22,259 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:12:22,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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)] Forceful destruction successful, exit code 0 [2022-11-21 16:12:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:22,475 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:12:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:12:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1652156766, now seen corresponding path program 1 times [2022-11-21 16:12:22,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:12:22,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5153646] [2022-11-21 16:12:22,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:12:22,478 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 [2022-11-21 16:12:22,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:12:22,479 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:12:22,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:23,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 16:12:23,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:12:26,973 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_1| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_49| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_49|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_1|))))) (exists ((|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_1| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_49| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_49|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_1|)))))) is different from true [2022-11-21 16:12:29,263 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_2| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_50| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_50|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_2|))))) (exists ((|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_2| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_50| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_50|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_2|)))))) is different from true [2022-11-21 16:12:31,540 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_3| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_51| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_51|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_3|))))) (exists ((|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_3| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_51| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_51|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_3|)))))) is different from true [2022-11-21 16:12:31,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-21 16:12:31,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-21 16:12:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 4 not checked. [2022-11-21 16:12:31,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:12:35,178 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:12:35,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2022-11-21 16:12:35,242 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-21 16:12:35,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-21 16:12:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2022-11-21 16:12:35,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:12:35,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5153646] [2022-11-21 16:12:35,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5153646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:12:35,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:12:35,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 15 [2022-11-21 16:12:35,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29186445] [2022-11-21 16:12:35,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:12:35,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 16:12:35,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:12:35,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 16:12:35,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=109, Unknown=3, NotChecked=66, Total=210 [2022-11-21 16:12:35,482 INFO L87 Difference]: Start difference. First operand 364 states and 509 transitions. Second operand has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 5 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) [2022-11-21 16:12:40,327 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 [] [2022-11-21 16:12:42,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:12:44,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:12:48,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:12:48,886 INFO L93 Difference]: Finished difference Result 729 states and 1040 transitions. [2022-11-21 16:12:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:12:48,888 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 5 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) Word has length 210 [2022-11-21 16:12:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:12:48,892 INFO L225 Difference]: With dead ends: 729 [2022-11-21 16:12:48,892 INFO L226 Difference]: Without dead ends: 444 [2022-11-21 16:12:48,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 406 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=115, Invalid=356, Unknown=3, NotChecked=126, Total=600 [2022-11-21 16:12:48,895 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 110 mSDsluCounter, 3417 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 3848 SdHoareTripleChecker+Invalid, 2233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 1561 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:12:48,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 3848 Invalid, 2233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 657 Invalid, 3 Unknown, 1561 Unchecked, 12.1s Time] [2022-11-21 16:12:48,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-21 16:12:48,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 386. [2022-11-21 16:12:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 245 states have (on average 1.2081632653061225) internal successors, (296), 247 states have internal predecessors, (296), 110 states have call successors, (110), 27 states have call predecessors, (110), 30 states have return successors, (130), 111 states have call predecessors, (130), 109 states have call successors, (130) [2022-11-21 16:12:48,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 536 transitions. [2022-11-21 16:12:48,927 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 536 transitions. Word has length 210 [2022-11-21 16:12:48,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:12:48,928 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 536 transitions. [2022-11-21 16:12:48,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 5 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) [2022-11-21 16:12:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 536 transitions. [2022-11-21 16:12:48,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-21 16:12:48,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:12:48,932 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:12:48,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:49,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:49,155 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:12:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:12:49,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1292849073, now seen corresponding path program 1 times [2022-11-21 16:12:49,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:12:49,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021934379] [2022-11-21 16:12:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:12:49,158 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 [2022-11-21 16:12:49,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:12:49,159 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:12:49,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:50,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:12:50,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:12:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-21 16:12:50,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:12:50,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:12:50,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021934379] [2022-11-21 16:12:50,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021934379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:12:50,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:12:50,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:12:50,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234554432] [2022-11-21 16:12:50,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:12:50,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:12:50,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:12:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:12:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:12:50,877 INFO L87 Difference]: Start difference. First operand 386 states and 536 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-21 16:12:51,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:12:51,650 INFO L93 Difference]: Finished difference Result 674 states and 950 transitions. [2022-11-21 16:12:51,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:12:51,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 212 [2022-11-21 16:12:51,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:12:51,654 INFO L225 Difference]: With dead ends: 674 [2022-11-21 16:12:51,654 INFO L226 Difference]: Without dead ends: 388 [2022-11-21 16:12:51,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:12:51,657 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 82 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:12:51,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 2284 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 16:12:51,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-21 16:12:51,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2022-11-21 16:12:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 246 states have (on average 1.2073170731707317) internal successors, (297), 249 states have internal predecessors, (297), 110 states have call successors, (110), 27 states have call predecessors, (110), 31 states have return successors, (132), 111 states have call predecessors, (132), 109 states have call successors, (132) [2022-11-21 16:12:51,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 539 transitions. [2022-11-21 16:12:51,684 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 539 transitions. Word has length 212 [2022-11-21 16:12:51,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:12:51,685 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 539 transitions. [2022-11-21 16:12:51,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-21 16:12:51,685 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 539 transitions. [2022-11-21 16:12:51,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-21 16:12:51,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:12:51,688 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:12:51,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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)] Ended with exit code 0 [2022-11-21 16:12:51,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:51,911 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:12:51,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:12:51,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1705802895, now seen corresponding path program 1 times [2022-11-21 16:12:51,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:12:51,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742515501] [2022-11-21 16:12:51,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:12:51,915 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 [2022-11-21 16:12:51,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:12:51,916 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:12:51,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:53,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:12:53,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:12:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-21 16:12:54,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:12:54,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:12:54,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742515501] [2022-11-21 16:12:54,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742515501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:12:54,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:12:54,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:12:54,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887952815] [2022-11-21 16:12:54,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:12:54,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:12:54,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:12:54,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:12:54,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:12:54,061 INFO L87 Difference]: Start difference. First operand 388 states and 539 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2022-11-21 16:12:55,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:12:55,243 INFO L93 Difference]: Finished difference Result 679 states and 957 transitions. [2022-11-21 16:12:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:12:55,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) Word has length 235 [2022-11-21 16:12:55,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:12:55,247 INFO L225 Difference]: With dead ends: 679 [2022-11-21 16:12:55,248 INFO L226 Difference]: Without dead ends: 391 [2022-11-21 16:12:55,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:12:55,250 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 105 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:12:55,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2615 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 16:12:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-21 16:12:55,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 389. [2022-11-21 16:12:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 247 states have (on average 1.2064777327935223) internal successors, (298), 250 states have internal predecessors, (298), 110 states have call successors, (110), 27 states have call predecessors, (110), 31 states have return successors, (132), 111 states have call predecessors, (132), 109 states have call successors, (132) [2022-11-21 16:12:55,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 540 transitions. [2022-11-21 16:12:55,279 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 540 transitions. Word has length 235 [2022-11-21 16:12:55,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:12:55,280 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 540 transitions. [2022-11-21 16:12:55,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2022-11-21 16:12:55,280 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 540 transitions. [2022-11-21 16:12:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-21 16:12:55,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:12:55,282 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:12:55,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:55,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:55,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:12:55,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:12:55,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1402500186, now seen corresponding path program 1 times [2022-11-21 16:12:55,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:12:55,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052331507] [2022-11-21 16:12:55,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:12:55,494 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 [2022-11-21 16:12:55,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:12:55,515 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:12:55,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:57,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:12:57,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:12:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-21 16:12:57,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:12:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-11-21 16:12:58,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:12:58,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052331507] [2022-11-21 16:12:58,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052331507] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:12:58,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:12:58,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2022-11-21 16:12:58,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282459060] [2022-11-21 16:12:58,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:12:58,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:12:58,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:12:58,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:12:58,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:12:58,036 INFO L87 Difference]: Start difference. First operand 389 states and 540 transitions. Second operand has 11 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 7 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (37), 4 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-21 16:12:59,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:12:59,463 INFO L93 Difference]: Finished difference Result 703 states and 989 transitions. [2022-11-21 16:12:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:12:59,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 7 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (37), 4 states have call predecessors, (37), 7 states have call successors, (37) Word has length 236 [2022-11-21 16:12:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:12:59,468 INFO L225 Difference]: With dead ends: 703 [2022-11-21 16:12:59,468 INFO L226 Difference]: Without dead ends: 414 [2022-11-21 16:12:59,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:12:59,471 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 182 mSDsluCounter, 2177 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:12:59,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 2572 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 16:12:59,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-21 16:12:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 408. [2022-11-21 16:12:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 265 states have (on average 1.2150943396226415) internal successors, (322), 267 states have internal predecessors, (322), 111 states have call successors, (111), 27 states have call predecessors, (111), 31 states have return successors, (133), 113 states have call predecessors, (133), 110 states have call successors, (133) [2022-11-21 16:12:59,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 566 transitions. [2022-11-21 16:12:59,499 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 566 transitions. Word has length 236 [2022-11-21 16:12:59,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:12:59,500 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 566 transitions. [2022-11-21 16:12:59,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 7 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (37), 4 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-21 16:12:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 566 transitions. [2022-11-21 16:12:59,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-21 16:12:59,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:12:59,503 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:12:59,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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)] Forceful destruction successful, exit code 0 [2022-11-21 16:12:59,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:12:59,727 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:12:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:12:59,728 INFO L85 PathProgramCache]: Analyzing trace with hash -192715456, now seen corresponding path program 2 times [2022-11-21 16:12:59,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:12:59,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100079237] [2022-11-21 16:12:59,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:12:59,730 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 [2022-11-21 16:12:59,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:12:59,732 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:12:59,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:03,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:13:03,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:13:03,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 16:13:03,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:13:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-21 16:13:04,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:13:04,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:13:04,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100079237] [2022-11-21 16:13:04,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100079237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:13:04,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:13:04,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:13:04,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489139915] [2022-11-21 16:13:04,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:13:04,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:13:04,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:13:04,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:13:04,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:13:04,466 INFO L87 Difference]: Start difference. First operand 408 states and 566 transitions. Second operand has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 6 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-21 16:13:06,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:13:06,656 INFO L93 Difference]: Finished difference Result 718 states and 1008 transitions. [2022-11-21 16:13:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:13:06,658 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 6 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) Word has length 251 [2022-11-21 16:13:06,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:13:06,661 INFO L225 Difference]: With dead ends: 718 [2022-11-21 16:13:06,661 INFO L226 Difference]: Without dead ends: 410 [2022-11-21 16:13:06,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:13:06,664 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 177 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:13:06,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 3283 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 16:13:06,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-21 16:13:06,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 386. [2022-11-21 16:13:06,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 245 states have (on average 1.2081632653061225) internal successors, (296), 247 states have internal predecessors, (296), 110 states have call successors, (110), 27 states have call predecessors, (110), 30 states have return successors, (128), 111 states have call predecessors, (128), 109 states have call successors, (128) [2022-11-21 16:13:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 534 transitions. [2022-11-21 16:13:06,690 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 534 transitions. Word has length 251 [2022-11-21 16:13:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:13:06,691 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 534 transitions. [2022-11-21 16:13:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 6 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-21 16:13:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 534 transitions. [2022-11-21 16:13:06,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-21 16:13:06,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:13:06,693 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:13:06,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:06,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:06,907 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:13:06,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:13:06,908 INFO L85 PathProgramCache]: Analyzing trace with hash -556391816, now seen corresponding path program 3 times [2022-11-21 16:13:06,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:13:06,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215719989] [2022-11-21 16:13:06,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:13:06,910 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 [2022-11-21 16:13:06,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:13:06,911 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:13:06,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:09,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 16:13:09,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:13:09,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:13:09,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:13:09,872 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-11-21 16:13:09,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:13:09,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:13:09,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215719989] [2022-11-21 16:13:09,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215719989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:13:09,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:13:09,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:13:09,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564988459] [2022-11-21 16:13:09,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:13:09,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:13:09,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:13:09,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:13:09,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:13:09,874 INFO L87 Difference]: Start difference. First operand 386 states and 534 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-21 16:13:10,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:13:10,377 INFO L93 Difference]: Finished difference Result 668 states and 944 transitions. [2022-11-21 16:13:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:13:10,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 266 [2022-11-21 16:13:10,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:13:10,382 INFO L225 Difference]: With dead ends: 668 [2022-11-21 16:13:10,382 INFO L226 Difference]: Without dead ends: 386 [2022-11-21 16:13:10,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:13:10,385 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 2 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:13:10,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1986 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 16:13:10,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-21 16:13:10,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-11-21 16:13:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 245 states have (on average 1.2081632653061225) internal successors, (296), 247 states have internal predecessors, (296), 110 states have call successors, (110), 27 states have call predecessors, (110), 30 states have return successors, (127), 111 states have call predecessors, (127), 109 states have call successors, (127) [2022-11-21 16:13:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 533 transitions. [2022-11-21 16:13:10,408 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 533 transitions. Word has length 266 [2022-11-21 16:13:10,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:13:10,409 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 533 transitions. [2022-11-21 16:13:10,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-21 16:13:10,409 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 533 transitions. [2022-11-21 16:13:10,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-21 16:13:10,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:13:10,412 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:13:10,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:10,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:10,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:13:10,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:13:10,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1648927450, now seen corresponding path program 4 times [2022-11-21 16:13:10,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:13:10,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469455593] [2022-11-21 16:13:10,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:13:10,641 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 [2022-11-21 16:13:10,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:13:10,643 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:13:10,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:13,262 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:13:13,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:13:13,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 2153 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:13:13,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:13:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2022-11-21 16:13:13,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:13:13,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:13:13,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469455593] [2022-11-21 16:13:13,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469455593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:13:13,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:13:13,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:13:13,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002047327] [2022-11-21 16:13:13,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:13:13,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:13:13,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:13:13,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:13:13,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:13:13,780 INFO L87 Difference]: Start difference. First operand 386 states and 533 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-21 16:13:15,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:13:15,285 INFO L93 Difference]: Finished difference Result 679 states and 951 transitions. [2022-11-21 16:13:15,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:13:15,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 281 [2022-11-21 16:13:15,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:13:15,290 INFO L225 Difference]: With dead ends: 679 [2022-11-21 16:13:15,290 INFO L226 Difference]: Without dead ends: 398 [2022-11-21 16:13:15,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:13:15,293 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 79 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:13:15,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 3003 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 16:13:15,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-21 16:13:15,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2022-11-21 16:13:15,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 251 states have (on average 1.207171314741036) internal successors, (303), 253 states have internal predecessors, (303), 115 states have call successors, (115), 28 states have call predecessors, (115), 31 states have return successors, (132), 116 states have call predecessors, (132), 114 states have call successors, (132) [2022-11-21 16:13:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 550 transitions. [2022-11-21 16:13:15,321 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 550 transitions. Word has length 281 [2022-11-21 16:13:15,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:13:15,321 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 550 transitions. [2022-11-21 16:13:15,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-21 16:13:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 550 transitions. [2022-11-21 16:13:15,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-21 16:13:15,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:13:15,325 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:13:15,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:15,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:15,546 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:13:15,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:13:15,546 INFO L85 PathProgramCache]: Analyzing trace with hash 414007608, now seen corresponding path program 1 times [2022-11-21 16:13:15,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:13:15,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759316619] [2022-11-21 16:13:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:13:15,551 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 [2022-11-21 16:13:15,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:13:15,554 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:13:15,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:22,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 2265 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:13:22,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:13:22,534 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:13:22,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 132 treesize of output 36 [2022-11-21 16:13:23,619 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-21 16:13:23,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:13:23,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:13:23,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759316619] [2022-11-21 16:13:23,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759316619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:13:23,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:13:23,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:13:23,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302567002] [2022-11-21 16:13:23,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:13:23,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:13:23,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:13:23,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:13:23,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:13:23,622 INFO L87 Difference]: Start difference. First operand 398 states and 550 transitions. Second operand has 8 states, 7 states have (on average 16.142857142857142) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-21 16:13:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:13:31,059 INFO L93 Difference]: Finished difference Result 704 states and 987 transitions. [2022-11-21 16:13:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:13:31,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.142857142857142) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 296 [2022-11-21 16:13:31,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:13:31,065 INFO L225 Difference]: With dead ends: 704 [2022-11-21 16:13:31,066 INFO L226 Difference]: Without dead ends: 403 [2022-11-21 16:13:31,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:13:31,068 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 6 mSDsluCounter, 2227 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:13:31,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2637 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-21 16:13:31,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-21 16:13:31,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 400. [2022-11-21 16:13:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 253 states have (on average 1.2055335968379446) internal successors, (305), 255 states have internal predecessors, (305), 115 states have call successors, (115), 28 states have call predecessors, (115), 31 states have return successors, (132), 116 states have call predecessors, (132), 114 states have call successors, (132) [2022-11-21 16:13:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 552 transitions. [2022-11-21 16:13:31,096 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 552 transitions. Word has length 296 [2022-11-21 16:13:31,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:13:31,096 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 552 transitions. [2022-11-21 16:13:31,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.142857142857142) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-21 16:13:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 552 transitions. [2022-11-21 16:13:31,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-21 16:13:31,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:13:31,099 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:13:31,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:31,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:31,315 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:13:31,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:13:31,316 INFO L85 PathProgramCache]: Analyzing trace with hash -643816991, now seen corresponding path program 1 times [2022-11-21 16:13:31,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:13:31,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439781696] [2022-11-21 16:13:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:13:31,318 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 [2022-11-21 16:13:31,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:13:31,319 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:13:31,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:33,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:13:33,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:13:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-21 16:13:33,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:13:33,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:13:33,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439781696] [2022-11-21 16:13:33,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439781696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:13:33,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:13:33,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:13:33,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151687039] [2022-11-21 16:13:33,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:13:33,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:13:33,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:13:33,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:13:33,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:13:33,501 INFO L87 Difference]: Start difference. First operand 400 states and 552 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-21 16:13:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:13:33,631 INFO L93 Difference]: Finished difference Result 742 states and 1051 transitions. [2022-11-21 16:13:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:13:33,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 301 [2022-11-21 16:13:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:13:33,635 INFO L225 Difference]: With dead ends: 742 [2022-11-21 16:13:33,635 INFO L226 Difference]: Without dead ends: 405 [2022-11-21 16:13:33,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:13:33,638 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 7 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:13:33,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1286 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:13:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-11-21 16:13:33,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 401. [2022-11-21 16:13:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 254 states have (on average 1.204724409448819) internal successors, (306), 256 states have internal predecessors, (306), 115 states have call successors, (115), 28 states have call predecessors, (115), 31 states have return successors, (132), 116 states have call predecessors, (132), 114 states have call successors, (132) [2022-11-21 16:13:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 553 transitions. [2022-11-21 16:13:33,665 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 553 transitions. Word has length 301 [2022-11-21 16:13:33,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:13:33,666 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 553 transitions. [2022-11-21 16:13:33,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-21 16:13:33,666 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 553 transitions. [2022-11-21 16:13:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-21 16:13:33,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:13:33,669 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:13:33,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:33,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:33,895 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:13:33,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:13:33,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1264414986, now seen corresponding path program 1 times [2022-11-21 16:13:33,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:13:33,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917762041] [2022-11-21 16:13:33,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:13:33,898 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 [2022-11-21 16:13:33,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:13:33,899 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:13:33,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:35,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:13:35,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:13:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-21 16:13:36,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:13:36,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:13:36,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917762041] [2022-11-21 16:13:36,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917762041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:13:36,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:13:36,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:13:36,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806632084] [2022-11-21 16:13:36,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:13:36,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:13:36,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:13:36,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:13:36,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:13:36,182 INFO L87 Difference]: Start difference. First operand 401 states and 553 transitions. Second operand has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-21 16:13:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:13:37,093 INFO L93 Difference]: Finished difference Result 750 states and 1046 transitions. [2022-11-21 16:13:37,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:13:37,094 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) Word has length 301 [2022-11-21 16:13:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:13:37,097 INFO L225 Difference]: With dead ends: 750 [2022-11-21 16:13:37,098 INFO L226 Difference]: Without dead ends: 415 [2022-11-21 16:13:37,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:13:37,100 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 5 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3660 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:13:37,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3660 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 16:13:37,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-11-21 16:13:37,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 408. [2022-11-21 16:13:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 259 states have (on average 1.2007722007722008) internal successors, (311), 262 states have internal predecessors, (311), 115 states have call successors, (115), 28 states have call predecessors, (115), 33 states have return successors, (141), 117 states have call predecessors, (141), 114 states have call successors, (141) [2022-11-21 16:13:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 567 transitions. [2022-11-21 16:13:37,127 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 567 transitions. Word has length 301 [2022-11-21 16:13:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:13:37,128 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 567 transitions. [2022-11-21 16:13:37,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-21 16:13:37,128 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 567 transitions. [2022-11-21 16:13:37,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-21 16:13:37,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:13:37,131 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:13:37,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:37,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:37,355 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:13:37,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:13:37,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2070873983, now seen corresponding path program 1 times [2022-11-21 16:13:37,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:13:37,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915362766] [2022-11-21 16:13:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:13:37,359 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 [2022-11-21 16:13:37,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:13:37,360 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:13:37,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 (19)] Waiting until timeout for monitored process [2022-11-21 16:13:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:39,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:13:39,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:13:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 258 proven. 1 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-21 16:13:39,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:13:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2022-11-21 16:13:40,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:13:40,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915362766] [2022-11-21 16:13:40,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915362766] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:13:40,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:13:40,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 16:13:40,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413475741] [2022-11-21 16:13:40,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:13:40,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:13:40,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:13:40,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:13:40,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:13:40,245 INFO L87 Difference]: Start difference. First operand 408 states and 567 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-21 16:13:40,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:13:40,744 INFO L93 Difference]: Finished difference Result 771 states and 1107 transitions. [2022-11-21 16:13:40,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:13:40,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 304 [2022-11-21 16:13:40,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:13:40,749 INFO L225 Difference]: With dead ends: 771 [2022-11-21 16:13:40,749 INFO L226 Difference]: Without dead ends: 423 [2022-11-21 16:13:40,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:13:40,752 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 30 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:13:40,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1732 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:13:40,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-21 16:13:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 417. [2022-11-21 16:13:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 268 states have (on average 1.205223880597015) internal successors, (323), 271 states have internal predecessors, (323), 115 states have call successors, (115), 28 states have call predecessors, (115), 33 states have return successors, (141), 117 states have call predecessors, (141), 114 states have call successors, (141) [2022-11-21 16:13:40,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 579 transitions. [2022-11-21 16:13:40,802 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 579 transitions. Word has length 304 [2022-11-21 16:13:40,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:13:40,803 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 579 transitions. [2022-11-21 16:13:40,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-21 16:13:40,803 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 579 transitions. [2022-11-21 16:13:40,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-21 16:13:40,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:13:40,806 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:13:40,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 (19)] Ended with exit code 0 [2022-11-21 16:13:41,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:41,025 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:13:41,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:13:41,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2014722693, now seen corresponding path program 1 times [2022-11-21 16:13:41,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:13:41,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735485389] [2022-11-21 16:13:41,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:13:41,027 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 [2022-11-21 16:13:41,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:13:41,028 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:13:41,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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)] Waiting until timeout for monitored process [2022-11-21 16:13:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:46,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-21 16:13:46,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:13:47,868 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:13:47,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 65 treesize of output 17 [2022-11-21 16:13:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-21 16:13:48,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:13:48,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:13:48,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735485389] [2022-11-21 16:13:48,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735485389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:13:48,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:13:48,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 16:13:48,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734609083] [2022-11-21 16:13:48,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:13:48,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:13:48,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:13:48,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:13:48,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:13:48,056 INFO L87 Difference]: Start difference. First operand 417 states and 579 transitions. Second operand has 12 states, 11 states have (on average 10.909090909090908) internal successors, (120), 12 states have internal predecessors, (120), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) [2022-11-21 16:13:56,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:13:56,960 INFO L93 Difference]: Finished difference Result 853 states and 1227 transitions. [2022-11-21 16:13:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:13:56,964 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.909090909090908) internal successors, (120), 12 states have internal predecessors, (120), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) Word has length 310 [2022-11-21 16:13:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:13:56,969 INFO L225 Difference]: With dead ends: 853 [2022-11-21 16:13:56,969 INFO L226 Difference]: Without dead ends: 484 [2022-11-21 16:13:56,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:13:56,972 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 117 mSDsluCounter, 3690 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 4099 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:13:56,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 4099 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-21 16:13:56,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-11-21 16:13:57,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 435. [2022-11-21 16:13:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 284 states have (on average 1.2077464788732395) internal successors, (343), 287 states have internal predecessors, (343), 115 states have call successors, (115), 28 states have call predecessors, (115), 35 states have return successors, (154), 119 states have call predecessors, (154), 114 states have call successors, (154) [2022-11-21 16:13:57,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 612 transitions. [2022-11-21 16:13:57,020 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 612 transitions. Word has length 310 [2022-11-21 16:13:57,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:13:57,021 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 612 transitions. [2022-11-21 16:13:57,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.909090909090908) internal successors, (120), 12 states have internal predecessors, (120), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) [2022-11-21 16:13:57,021 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 612 transitions. [2022-11-21 16:13:57,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-21 16:13:57,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:13:57,024 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:13:57,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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)] Forceful destruction successful, exit code 0 [2022-11-21 16:13:57,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:57,251 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:13:57,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:13:57,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1391876475, now seen corresponding path program 1 times [2022-11-21 16:13:57,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:13:57,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459378133] [2022-11-21 16:13:57,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:13:57,255 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 [2022-11-21 16:13:57,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:13:57,256 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:13:57,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:59,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 2298 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:13:59,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:13:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-11-21 16:13:59,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:13:59,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:13:59,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459378133] [2022-11-21 16:13:59,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459378133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:13:59,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:13:59,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:13:59,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650571644] [2022-11-21 16:13:59,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:13:59,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:13:59,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:13:59,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:13:59,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:13:59,450 INFO L87 Difference]: Start difference. First operand 435 states and 612 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-21 16:13:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:13:59,577 INFO L93 Difference]: Finished difference Result 837 states and 1196 transitions. [2022-11-21 16:13:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:13:59,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 310 [2022-11-21 16:13:59,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:13:59,581 INFO L225 Difference]: With dead ends: 837 [2022-11-21 16:13:59,582 INFO L226 Difference]: Without dead ends: 460 [2022-11-21 16:13:59,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:13:59,584 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 8 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:13:59,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1778 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:13:59,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-21 16:13:59,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 443. [2022-11-21 16:13:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 292 states have (on average 1.202054794520548) internal successors, (351), 295 states have internal predecessors, (351), 115 states have call successors, (115), 28 states have call predecessors, (115), 35 states have return successors, (154), 119 states have call predecessors, (154), 114 states have call successors, (154) [2022-11-21 16:13:59,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 620 transitions. [2022-11-21 16:13:59,616 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 620 transitions. Word has length 310 [2022-11-21 16:13:59,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:13:59,617 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 620 transitions. [2022-11-21 16:13:59,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-21 16:13:59,617 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 620 transitions. [2022-11-21 16:13:59,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-21 16:13:59,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:13:59,620 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:13:59,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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)] Forceful destruction successful, exit code 0 [2022-11-21 16:13:59,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:13:59,835 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:13:59,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:13:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash 91694395, now seen corresponding path program 1 times [2022-11-21 16:13:59,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:13:59,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904860309] [2022-11-21 16:13:59,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:13:59,838 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 [2022-11-21 16:13:59,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:13:59,839 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:13:59,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 (22)] Waiting until timeout for monitored process [2022-11-21 16:14:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:01,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 2293 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:14:01,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:14:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-11-21 16:14:01,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:14:01,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:14:01,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904860309] [2022-11-21 16:14:02,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904860309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:14:02,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:14:02,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:14:02,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827575447] [2022-11-21 16:14:02,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:14:02,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:14:02,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:14:02,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:14:02,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:14:02,003 INFO L87 Difference]: Start difference. First operand 443 states and 620 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-21 16:14:02,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:14:02,140 INFO L93 Difference]: Finished difference Result 838 states and 1215 transitions. [2022-11-21 16:14:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:14:02,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 310 [2022-11-21 16:14:02,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:14:02,147 INFO L225 Difference]: With dead ends: 838 [2022-11-21 16:14:02,147 INFO L226 Difference]: Without dead ends: 443 [2022-11-21 16:14:02,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:14:02,151 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 7 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:14:02,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1303 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:14:02,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-21 16:14:02,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2022-11-21 16:14:02,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 292 states have (on average 1.1952054794520548) internal successors, (349), 295 states have internal predecessors, (349), 115 states have call successors, (115), 28 states have call predecessors, (115), 35 states have return successors, (154), 119 states have call predecessors, (154), 114 states have call successors, (154) [2022-11-21 16:14:02,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 618 transitions. [2022-11-21 16:14:02,184 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 618 transitions. Word has length 310 [2022-11-21 16:14:02,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:14:02,185 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 618 transitions. [2022-11-21 16:14:02,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-21 16:14:02,186 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 618 transitions. [2022-11-21 16:14:02,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-21 16:14:02,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:14:02,188 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:14:02,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 (22)] Forceful destruction successful, exit code 0 [2022-11-21 16:14:02,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:14:02,403 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:14:02,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1408820805, now seen corresponding path program 1 times [2022-11-21 16:14:02,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:14:02,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765621485] [2022-11-21 16:14:02,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:02,407 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 [2022-11-21 16:14:02,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:14:02,409 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:14:02,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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)] Waiting until timeout for monitored process [2022-11-21 16:14:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:07,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2307 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-21 16:14:07,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:14:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-11-21 16:14:08,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:14:08,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:14:08,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765621485] [2022-11-21 16:14:08,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765621485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:14:08,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:14:08,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 16:14:08,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92618178] [2022-11-21 16:14:08,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:14:08,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:14:08,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:14:08,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:14:08,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:14:08,878 INFO L87 Difference]: Start difference. First operand 443 states and 618 transitions. Second operand has 13 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-21 16:14:16,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:14:16,437 INFO L93 Difference]: Finished difference Result 777 states and 1097 transitions. [2022-11-21 16:14:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:14:16,441 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) Word has length 314 [2022-11-21 16:14:16,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:14:16,446 INFO L225 Difference]: With dead ends: 777 [2022-11-21 16:14:16,446 INFO L226 Difference]: Without dead ends: 443 [2022-11-21 16:14:16,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:14:16,450 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 98 mSDsluCounter, 3731 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 4115 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:14:16,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 4115 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-21 16:14:16,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-21 16:14:16,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2022-11-21 16:14:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 292 states have (on average 1.1917808219178083) internal successors, (348), 295 states have internal predecessors, (348), 115 states have call successors, (115), 28 states have call predecessors, (115), 35 states have return successors, (154), 119 states have call predecessors, (154), 114 states have call successors, (154) [2022-11-21 16:14:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 617 transitions. [2022-11-21 16:14:16,490 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 617 transitions. Word has length 314 [2022-11-21 16:14:16,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:14:16,490 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 617 transitions. [2022-11-21 16:14:16,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-21 16:14:16,491 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 617 transitions. [2022-11-21 16:14:16,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-21 16:14:16,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:14:16,494 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:14:16,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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)] Forceful destruction successful, exit code 0 [2022-11-21 16:14:16,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:14:16,719 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:14:16,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:16,720 INFO L85 PathProgramCache]: Analyzing trace with hash -147903555, now seen corresponding path program 1 times [2022-11-21 16:14:16,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:14:16,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444728990] [2022-11-21 16:14:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:16,723 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 [2022-11-21 16:14:16,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:14:16,725 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 16:14:16,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 16:16:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:13,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 2310 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-21 16:16:13,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:16:13,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2022-11-21 16:16:14,851 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v___CPROVER_overflow_mult_~#c~1.base_199| (_ BitVec 64)) (v_ArrVal_3085 (_ BitVec 1))) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_199|) (_ bv0 1)) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_199| v_ArrVal_3085)))) is different from true [2022-11-21 16:16:17,096 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_aws_array_list_is_valid_~#required_size~0.base_61| (_ BitVec 64)) (v_ArrVal_3084 (_ BitVec 1)) (|v___CPROVER_overflow_mult_~#c~1.base_199| (_ BitVec 64)) (v_ArrVal_3085 (_ BitVec 1)) (v_ArrVal_3086 (_ BitVec 1))) (let ((.cse0 (store |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_61| v_ArrVal_3084))) (and (= |c_#valid| (store (store .cse0 |v___CPROVER_overflow_mult_~#c~1.base_199| v_ArrVal_3085) |v_aws_array_list_is_valid_~#required_size~0.base_61| v_ArrVal_3086)) (= (_ bv0 1) (select |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_61|)) (= (select .cse0 |v___CPROVER_overflow_mult_~#c~1.base_199|) (_ bv0 1))))) is different from true [2022-11-21 16:16:17,269 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v___CPROVER_overflow_mult_~#c~1.base_200| (_ BitVec 64)) (v_ArrVal_3088 (_ BitVec 1))) (and (= (_ bv0 1) (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_200|)) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_200| v_ArrVal_3088)))) is different from true [2022-11-21 16:16:19,514 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_aws_array_list_is_valid_~#required_size~0.base_62| (_ BitVec 64)) (v_ArrVal_3084 (_ BitVec 1)) (|v___CPROVER_overflow_mult_~#c~1.base_199| (_ BitVec 64)) (v_ArrVal_3089 (_ BitVec 1)) (v_ArrVal_3085 (_ BitVec 1))) (let ((.cse0 (store |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_62| v_ArrVal_3084))) (and (= (store (store .cse0 |v___CPROVER_overflow_mult_~#c~1.base_199| v_ArrVal_3085) |v_aws_array_list_is_valid_~#required_size~0.base_62| v_ArrVal_3089) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_62|)) (= (select .cse0 |v___CPROVER_overflow_mult_~#c~1.base_199|) (_ bv0 1))))) is different from true [2022-11-21 16:16:19,593 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_aws_array_list_is_valid_~#required_size~0.base_61| (_ BitVec 64)) (|v_aws_array_list_is_valid_~#required_size~0.base_62| (_ BitVec 64)) (v_ArrVal_3084 (_ BitVec 1)) (v_ArrVal_3095 (_ BitVec 1)) (|v___CPROVER_overflow_mult_~#c~1.base_199| (_ BitVec 64)) (v_ArrVal_3089 (_ BitVec 1)) (v_ArrVal_3085 (_ BitVec 1)) (v_ArrVal_3096 (_ BitVec 1)) (v_ArrVal_3086 (_ BitVec 1)) (|v___CPROVER_overflow_mult_~#c~1.base_202| (_ BitVec 64))) (let ((.cse1 (store |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_61| v_ArrVal_3084))) (let ((.cse0 (store (store .cse1 |v___CPROVER_overflow_mult_~#c~1.base_199| v_ArrVal_3085) |v_aws_array_list_is_valid_~#required_size~0.base_61| v_ArrVal_3086))) (let ((.cse2 (store .cse0 |v_aws_array_list_is_valid_~#required_size~0.base_62| v_ArrVal_3095))) (and (= (_ bv0 1) (select |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_61|)) (= (_ bv0 1) (select .cse0 |v_aws_array_list_is_valid_~#required_size~0.base_62|)) (= (select .cse1 |v___CPROVER_overflow_mult_~#c~1.base_199|) (_ bv0 1)) (= |c_#valid| (store (store .cse2 |v___CPROVER_overflow_mult_~#c~1.base_202| v_ArrVal_3096) |v_aws_array_list_is_valid_~#required_size~0.base_62| v_ArrVal_3089)) (= (select .cse2 |v___CPROVER_overflow_mult_~#c~1.base_202|) (_ bv0 1))))))) is different from true [2022-11-21 16:16:20,808 INFO L321 Elim1Store]: treesize reduction 232, result has 25.9 percent of original size [2022-11-21 16:16:20,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 7176 treesize of output 7164 [2022-11-21 16:16:25,641 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3091 (_ BitVec 1)) (|v___CPROVER_overflow_mult_~#c~1.base_201| (_ BitVec 64))) (and (= (_ bv0 1) (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_201|)) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_201| v_ArrVal_3091)))) is different from true [2022-11-21 16:16:32,417 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3094 (Array (_ BitVec 64) (_ BitVec 64)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3094) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3093 (Array (_ BitVec 64) (_ BitVec 64)))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3093) |c_#memory_$Pointer$.base|))) is different from true [2022-11-21 16:16:32,458 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_array_list_is_valid_~#required_size~0.base| (_ BitVec 64))) (and (exists ((v_ArrVal_3094 (Array (_ BitVec 64) (_ BitVec 64)))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3094) |c_#memory_$Pointer$.offset|)) (= (_ bv0 1) (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|)) (exists ((v_ArrVal_3093 (Array (_ BitVec 64) (_ BitVec 64)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3093) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-21 16:16:32,689 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 16:16:32,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-21 16:16:32,778 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 16:16:32,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-21 16:16:32,808 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 7 treesize of output 3 [2022-11-21 16:16:32,853 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 7 treesize of output 3 [2022-11-21 16:16:41,809 INFO L321 Elim1Store]: treesize reduction 38, result has 74.8 percent of original size [2022-11-21 16:16:41,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1857 treesize of output 1925 [2022-11-21 16:16:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 243 proven. 63 refuted. 8 times theorem prover too weak. 141 trivial. 76 not checked. [2022-11-21 16:16:44,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:16:47,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2022-11-21 16:16:47,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2022-11-21 16:16:47,596 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 25 treesize of output 21 [2022-11-21 16:16:47,604 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 21 treesize of output 17 [2022-11-21 16:16:48,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:16:48,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444728990] [2022-11-21 16:16:48,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444728990] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:16:48,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1528619706] [2022-11-21 16:16:48,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:48,039 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-21 16:16:48,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/cvc4 [2022-11-21 16:16:48,040 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-21 16:16:48,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57dd22c4-321c-4a9b-8eb7-d55a2dd2220c/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process